Article
Chemistry, Multidisciplinary
Lorenzo Pezzana, Giuseppe Melilli, Nathanael Guigo, Nicolas Sbirrazzuoli, Marco Sangermano
Summary: Biobased monomers are functionalized with epoxy groups to produce new cationic UV-curable monomers for coating applications. The properties of the final UV-cured coatings can be easily tailored by adjusting the ratio of different monomers or incorporating inorganic networks. The thermal and mechanical properties of the coatings are significantly influenced by the content of TEOS and GFA in the formulations.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Applied
Lorenzo Pezzana, Alice Emanuele, Raffaella Sesana, Cristiana Delprete, Eva Malmstrom, Mats Johansson, Marco Sangermano
Summary: The scientific community is actively researching bio-based derivatives to reduce the consumption of fossil-based materials and their environmental impact. Developing bio-based plastics is a significant challenge in achieving sustainability and a green economy. A study focused on using a bio-based monomer, isosorbide, for the production of bio-based resins used in coatings. They successfully functionalized isosorbide to introduce epoxy groups, which were then activated through UV radiation for cross-linking. The bio-based resin showed potential for UV-cationic curing, reaching conversion rates above 85%. Additionally, they added a bio-based filler, macadamia nutshell powder (MAC), to increase the surface hardness of the coating. The resulting coating with 30% MAC showed a significant increase in hardness compared to the pristine bio-based epoxy resin. Thermo-mechanical analysis revealed that the addition of MAC also increased the glass transition temperature (Tg) of the coating.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Engineering, Chemical
Xiaokang Zhang, Shunbing Cai, Zhiwen Jian, Xi Yang, Yindong Wang, Zhanhua Wang, Xili Lu, Hesheng Xia
Summary: This study developed a novel epoxy resin containing dynamic covalent bonds, which can degrade in benzyl alcohol at 190 degrees Celsius under the catalysis of aluminum chloride. The optimized epoxy resin showed good mechanical properties. Carbon fiber-reinforced composites fabricated using this resin exhibited excellent mechanical properties and allowed for nondestructive recovery of carbon fibers.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Yuanbo Zhang, Hongxia Yan, Ruizhi Yu, Junshan Yuan, Kaiming Yang, Rui Liu, Yanyun He, Weixu Feng, Wei Tian
Summary: A new strategy of using hyperbranched dynamic crosslinking networks (HDCNs) to convert petroleum-based thermosets into degradable, reconfigurable, and multifunctional vitrimers has been proposed. HDCNs possess solvent adaptation and reversible behavior, enabling degradation and reconstruction at room temperature. The resulting vitrimers exhibit superior properties compared to the original thermosets.
Article
Nanoscience & Nanotechnology
Zhimin Wang, Guixiang Hou, Jianqiang Xie, Zengping Zhang, Xiangkai Zhang, Jiajin Cai
Summary: This study focuses on the production of bio-based fluorinated epoxy resin SA-BTB-EP and its composite with DDM. The results showed that SA-BTB-EP/DDM exhibited improved storage modulus, carbon residue, dielectric properties, and hydrophobicity compared to DGEHBA/DDM. Moreover, the inclusion of a Schiff base structure in SA-BTB-EP led to enhanced flame retardancy and reduced combustion byproducts.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yangzhong Zhao, Tianhao Li, Yanpei Dang, Erxiao Wu, Jiaqi Sun, Xiao Zhang, Shiyu Du, Xiaoling Liu, Xiaosu Yi, Ping Cui, Yujie Song, Liu He
Summary: UV irradiation has been neglected in the field of polymer-derived ceramics due to its complex mechanism and strict requirements for precursor molecular structure. In this study, a series of UV-curable polyborosilazanes containing various vinyl groups were designed and synthesized to examine the effect of UV curing and investigate the mechanism. Cyclization mechanisms involving vinyl-free radicals and silyl-free radicals were proposed based on the precursor's molecular structure. The ceramic yield of UV-cured precursors increased by up to 9.0%, and the resulting SiBCN ceramics exhibited excellent thermal stability and amorphous structure up to 1600 degrees C. The mechanistic interpretation of UV curing opens new horizons for the design and application of UV-curable ceramic precursors.
ACS APPLIED POLYMER MATERIALS
(2023)
Review
Polymer Science
Camilla Noe, Minna Hakkarainen, Marco Sangermano
Summary: Epoxy resins are crucial for producing thermosets due to their superior properties, but the search for biobased alternatives is growing due to environmental concerns and depletion of petroleum resources. Among curing techniques, UV-curing is considered the most environmentally friendly option. This review focuses on bio-based cationic UV-curable epoxy resins, highlighting their sources and applications.
Article
Engineering, Environmental
Angela Marotta, Noemi Faggio, Veronica Ambrogi, Alice Mija, Gennaro Gentile, Pierfrancesco Cerruti
Summary: The study investigated the effect of TiO2 on the curing behavior of the resin and the performance of the coatings, revealing that TiO2 particles reduce crosslinking degrees and glass transition temperatures, while enhancing chemical resistance of the coatings to acetic acid and ethanol.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Polymer Science
Haibo Zhang, Wanbing Li, Jiali Xu, Shibin Shang, Zhanqian Song
Summary: The fully bio-based cured epoxies synthesized using APA-based epoxy and TMA curing agent showed promising properties and potential to replace DER332 epoxy. The cured APA-based epoxy exhibited higher mechanical properties and thermal stability compared to the cured DER332 epoxy, making it a viable alternative for preparing cured epoxies.
IRANIAN POLYMER JOURNAL
(2021)
Article
Polymer Science
Adria Roig, Xavier Ramis, Silvia De la Flor, Angels Serra
Summary: A novel dual-curing procedure combining radical UV-initiated reaction and thermal thiol-epoxy reaction was developed in this work. Optimal thiol amount is essential for obtaining cross-linked materials with good mechanical performance and avoiding dripping of free monomers during storage. Glycidyl methacrylate in combination with trifunctional meth(acrylates) allows gelation in the 1st stage and acts as a covalent coupling between (meth)acrylates and epoxy networks.
Article
Chemistry, Applied
Lin Li, Zhenpeng Zhang, Minhui Wang, Yanan Zhang, Xun Lu
Summary: A flexible and self-healing epoxy acrylic coating with super-hydrophobicity was prepared by introducing dynamic disulfide bond and dangling chain into the resin system and spraying nano-SiO2 to construct micro surface structure. The coating showed improved self-healing efficiency, reduced brittleness and enhanced wear-resistance. These results could serve as a reference for developing high-performance UV-curable coatings.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Chemistry, Applied
Xiu Li, Di Wang, Longying Zhao, Xingzhou Hou, Li Liu, Bin Feng, Mengxin Li, Pai Zheng, Xuan Zhao, Shuangying Wei
Summary: An environmentally friendly waterborne wood coating with rapid curing speed and good mechanical properties was developed by introducing AESO and PETA to a UV-curable waterborne PUA resin. The optimal mechanical properties were achieved with 45% AESO content, with the emulsion having particle size smaller than 50 nm. The coating displayed excellent stability, uniform distribution, and cured quickly under UV LED light source.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Materials Science, Multidisciplinary
Daqin Zhang, Shenglin Jin, Jintao Wan, Juanli Wang, Yuhu Li, Pujun Jin, Daodao Hu
Summary: DEUEP, a renewable eugenol-based biphenyl bifunctional epoxy monomer, exhibits lower viscosity and potentially 100% biobased content. Compared to E54, DEUEP/33DDS shows lower flammability and higher thermal stability.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Polymer Science
Sasan Moradi, Xavier Fernandez-Francos, Osman Konuray, Xavier Ramis
Summary: Two series of poly(thiourethane)s-poly(thiol-epoxy) hybrids were synthesized from dual-curing, stoichiometric thiol:isocyanate:epoxy mixtures. The curing process occurs in a controlled and sequential manner, with the thiol-isocyanate reaction occurring first followed by the thiol-epoxy reaction. The stress relaxation behavior is dependent on the contribution of isocyanate and epoxy groups, with isocyanate-rich materials showing simple relaxation and epoxy-rich materials exhibiting a two-step relaxation process. Complete stress relaxation can be achieved through additional bond exchange reactions, allowing for full recycling of the material at moderate temperatures.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Polymer Science
Hajime Kimura, Keiko Ohtsuka, Morio Yonekawa
Summary: The study investigated the curing behavior of an epoxy resin using two compounds as curing agents, revealing that the reaction between the acid anhydride group and the epoxy group followed by the phenylethynylcarbonyl groups significantly improved heat resistance and flame retardancy of the resulting product. The presence of a small amount of the imide compound enhanced the efficiency of the reaction.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2021)
Article
Polymer Science
Zeynep Deliballi, Rezan Demir-Cakan, Baris Kiskan, Yusuf Yagci
Summary: A new approach to vulcanize commercial PVC at room temperature using elemental sulfur and an initiator is reported. The obtained crosslinked polymer with polysulfide linkages shows potential for recycling/self-healing and as cathode material for Li-S battery.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2023)
Article
Polymer Science
Lorenzo Pezzana, Giuseppe Melilli, Nathanael Guigo, Nicolas Sbirrazzuoli, Marco Sangermano
Summary: This article investigates the use of furfuryl glycidyl ether (FGE) as a monomer to design a two-step cured coating. Linear polymer chains are produced using cationic UV technique, and the UV reactivity of FGE is evaluated using real-time Fourier Transform Infrared Spectroscopy (FTIR). After a thermal treatment, the formation of cross-links in the UV-irradiated linear chains is confirmed using various techniques.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Elisabeth Rossegger, Rita Hoeller, Katja HrbiniC, Marco Sangermano, Thomas Griesser, Sandra Schloegl
Summary: Magnetoresponsive polymers are important materials in the design of soft actuators, allowing for controlled movement through an external magnetic field. By incorporating magnetoresponsiveness into photocurable resins, personalized and complex structures can be created and driven by a magnetic field using 3D printing technology.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Zehra Gul Coban, Huseyin Cem Kiliclar, Yusuf Yagci
Summary: Photochemical techniques have seen a revival due to their adaptability and ability to produce complex macromolecular structures, although their application in the polymerization of cyclic siloxane monomers has been limited. This study investigated the cationic ring-opening polymerization of Octamethylcyclotetrasiloxane (D4) using diphenyl iodonium hexafluorophosphate (DPI) as the initiator. Both direct and indirect initiation systems were examined, using benzophenone and pyrene to generate photochemically induced protonic acids and silylium cations for the polymerization. Kinetics of the polymerization were monitored using viscosimetry and GPC analysis. This approach has potential industrial importance for polysiloxane fabrication due to its ability to overcome challenges associated with conventional methods.
Article
Chemistry, Applied
Lorenzo Pezzana, Giuseppe Melilli, Marco Sangermano, Nicolas Sbirrazzuoli, Nathanael Guigo
Summary: In this work, a diglycidyl furfuryl amine (DGFA) was synthesized to produce a functional coating. A room temperature curing process, using bio-based itaconic acid (IA), was implemented to reduce energy consumption. The curing process was characterized using DSC, rheology, and real-time ATR FTIR, while the thermo-mechanical properties were analyzed using DMTA. Finally, the surface properties of the coating were modified via a UV-induced thiol-ene reaction between itaconic acid moieties and fluorine-based monomers. The surface functionalization was evaluated using contact angle measurements and XPS analysis.
REACTIVE & FUNCTIONAL POLYMERS
(2023)
Review
Materials Science, Multidisciplinary
Rossella Sesia, Silvia Spriano, Marco Sangermano, Sara Ferraris
Summary: Corrosion is a significant problem for steel, and research has focused on developing effective corrosion prevention strategies. Commonly used corrosion inhibitors can be harmful, so there is interest in finding natural alternatives. Polyphenols, derived from plants or agricultural by-products, have been investigated for their rust conversion and corrosion prevention properties. This review discusses the use of polyphenols as rust converters, in green anticorrosive coatings, and as active components in corrosion-inhibiting primers. Polyphenolic additives in coatings are also explored as sustainable systems to improve corrosion resistance.
Article
Engineering, Manufacturing
Michael Zanon, Raquel Cue-Lopez, Enrique Martinez-Campos, Paula Bosch, Davy-Louis Versace, Hassan Hayek, Nadia Garino, Candido Fabrizio Pirri, Marco Sangermano, Annalisa Chiappone
Summary: The importance of 3D printable hydrogels in tissue engineering is increasing due to their similarity with the human body's extracellular matrix. This study utilized Quinizarin-based bioderived photoactive dyes to enable 3D printing of methacrylated chitosan through vat photopolymerization. The use of these dyes improved printability and resolution while also acting as photosensitizers and fillers/crosslinkers. The study successfully achieved defined chitosan 3D structures with suspended features using Digital Light Processing, and also evaluated the mechanical and swelling properties of the hydrogels, as well as their potential application in tissue engineering through cell proliferation analysis.
ADDITIVE MANUFACTURING
(2023)
Article
Multidisciplinary Sciences
Sathiyaraj Subramaniyan, Matteo Bergoglio, Marco Sangermano, Minna Hakkarainen
Summary: In order to move towards a circular bioeconomy, a paradigm shift from traditional petroleum-based non-recyclable thermosets to biobased repeatedly recyclable materials is required. Two mechanically and chemically recyclable extended vanillin-derived epoxy thermosets were successfully fabricated by introducing Schiff-base/imine covalent dynamic bonds. These thermosets exhibited good thermal and mechanical properties, stability in common organic solvents, and the ability to be thermally reprocessed through compression molding. Furthermore, they could be rapidly and completely chemically recycled to water-soluble aldehydes and amines by imine hydrolysis in 0.1M HCl solution.
Article
Polymer Science
Julia Amici, Giorgio Banaudi, Mattia Longo, Matteo Gandolfo, Michael Zanon, Carlotta Francia, Silvia Bodoardo, Marco Sangermano
Summary: In this study, an innovative lithium protective membrane based on chitosan was prepared and applied to lithium-oxygen batteries. The membrane effectively reduced the problems caused by the reactivity of lithium metal anode and the oxidative environment. The protected lithium cells showed higher discharge capacity and longer cycling performance.
Article
Chemistry, Multidisciplinary
Anna Liguori, Eugenia Oliva, Marco Sangermano, Minna Hakkarainen
Summary: Four isosorbide-based photocurable resins were designed and their correlations with composition, chemical structure, DLP 3D printability, thermoset properties, and recyclability were investigated. The study revealed the significant impact of resin composition on printability and physical properties of the resulting thermosets. The research also highlighted the successful reprocessing or chemical recycling of ester-imine thermosets with preserved elastic modulus, emphasizing the role of ester functionality concentration in recycling.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Lazaros Papadopoulos, Lorenzo Pezzana, Natalia Maria Malitowski, Marco Sangermano, Dimitrios. N. N. Bikiaris, Tobias Robert
Summary: In the search for sustainable thermosets, research has been conducted on various polymer classes, including epoxy, benzoxazines, acryl-/methacrylates, etc. Itaconic acid-based unsaturated polyester resins are a particular group that can also be used as sustainable inks for additive manufacturing. This study synthesized a series of itaconic acid-based polyesters with different reactive diluent contents and evaluated their physicochemical properties and reactivity toward UV light. The same formulations were used for 3D printing and their thermomechanical properties were examined.
Article
Chemistry, Multidisciplinary
Ines Cazin, Elisabeth Rossegger, Ignazio Roppolo, Marco Sangermano, Petra Granitzer, Klemens Rumpf, Sandra Schloegl
Summary: Additive manufacturing is a promising technique for fabricating customized 3D objects. Interest is growing in using magnetic materials for 3D printing functional devices. In this study, magnetic Fe3O4 nanoparticles were introduced into a dynamic photopolymer network, which allowed for thermo-activated bond exchange reactions and the healing of 3D-printed structures. The magnetically responsive composites showed potential for use in healable soft devices activated by external magnetic fields.
Article
Engineering, Manufacturing
Cristian Mendes-Felipe, Riccardo Cofano, Ander Garcia, Marco Sangermano, Senentxu Lanceros-Mendez
Summary: The manufacturing industry is adopting plant-based and renewable resources to replace fossil fuel materials for a more environmentally friendly and sustainable economy. The combination of these materials with conductive fillers allows for the fabrication of conductive tracks and sensors essential for the implementation of the IoT and Industry 4.0 concepts.
ADDITIVE MANUFACTURING
(2023)
Article
Chemistry, Applied
Lorenzo Pezzana, Alice Emanuele, Raffaella Sesana, Cristiana Delprete, Eva Malmstrom, Mats Johansson, Marco Sangermano
Summary: The scientific community is actively researching bio-based derivatives to reduce the consumption of fossil-based materials and their environmental impact. Developing bio-based plastics is a significant challenge in achieving sustainability and a green economy. A study focused on using a bio-based monomer, isosorbide, for the production of bio-based resins used in coatings. They successfully functionalized isosorbide to introduce epoxy groups, which were then activated through UV radiation for cross-linking. The bio-based resin showed potential for UV-cationic curing, reaching conversion rates above 85%. Additionally, they added a bio-based filler, macadamia nutshell powder (MAC), to increase the surface hardness of the coating. The resulting coating with 30% MAC showed a significant increase in hardness compared to the pristine bio-based epoxy resin. Thermo-mechanical analysis revealed that the addition of MAC also increased the glass transition temperature (Tg) of the coating.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Chemistry, Multidisciplinary
Amandine L. Flourat, Lorenzo Pezzana, Sabrina Belgacem, Abdouramane Dosso, Marco Sangermano, Sami Fadlallah, Florent Allais
Summary: In this study, tunable bis-allylated compounds were efficiently synthesized from cellulose-derived levoglucosenone via a chemo-enzymatic pathway, and then polymerized through photocuring, resulting in thermosets suitable for 3D printing.
Article
Polymer Science
Mustafa Kalay, Abidin Esidir, Mahmut Ruzi, N. Burak Kiremitler, Mustafa Serdar Onses
Summary: This study proposes stable and addressable polymer PUFs, utilizing a cross-linkable polymer system, which demonstrates high stochastic characteristics and low-cost production. The performance of the polymer features is evaluated through various analyses, and direct image authentication is achieved using feature matching algorithms.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Jingyu Jin, Guoqiang Lu, Jun Nie, Xiaoqun Zhu
Summary: Photopolymerization technology is limited in the fields of food packaging and biomedicine due to the high migration of small molecules from photoinitiators. In this study, a polymerizable 2-vinyl thioxanthone (ETX) was synthesized to improve the migration stability of photoinitiators. Macromolecular photoinitiators (PPI1, PPI2) were also prepared to further reduce migration. The results showed that the ETX/TEOA system had higher initiation performance and PPI2 displayed favorable initiation ability. Additionally, the migration of ETX, PPI1, and PPI2 in photocured film was significantly reduced. These low-migration photoinitiators have potential applications in the fields of food packaging and biological materials.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Weijie Li, Jun Nie, Yingying Zhao, Xiaoqun Zhu
Summary: This study focuses on the development of high-performance, low-migration photoinitiators. A polymerizable photoinitiator (VBP) was synthesized by introducing an ethylene group into benzophenone, and three different molecular weight single-component photoinitiators (PVBN1-3) were synthesized based on VBP. The results show that these new photoinitiators have stronger absorption ability compared to benzophenone and significantly reduce the migration of initiators and co-initiators, addressing the safety concerns caused by migration.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Seira Morimune-Moriya, Yuki Iwahashi, Mitsuru Nakamura, Daisuke Ogawa, Keiji Nakamura
Summary: This study investigates the effect of plasma treatment on carbon nanotubes (CNTs) and the structure/properties of polyimide (PI) nanocomposites with ultra-low content of CNTs. The results show that plasma treatment introduces isocyanate groups on the surface of CNTs and enhances the interfacial interaction between PI and treated CNTs. This leads to a significant improvement in the mechanical properties of the nanocomposites, with even a small addition of treated CNTs showing a substantial increase in Young's modulus, tensile strength and toughness.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Yuanlong Li, Chaojie Chen, Guoqing Cui, Li Liu, Chao Zhou, Guangfeng Wu
Summary: In this study, a novel ion-conducting hydrogel was fabricated using a straightforward approach. The hydrogel showed excellent tensile properties and high toughness due to physical interactions and covalent binding. Additionally, the introduction of hydroxyethyl cellulose and lithium chloride improved the biocompatibility, mechanical properties, electrical conductivity, and frost resistance of the hydrogel, demonstrating its potential for cold climate applications.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Dengwei Yan, Jinxian Yang, Xuejun Pan, Xiaozheng Duan, Lianwei Li, Mo Zhu
Summary: The influence of backbone length on grafting efficiency during the graft-onto reaction process was investigated. It was found that the polydispersity effect of backbone length does not affect the final grafting efficiency, indicating that the local dynamics of chain segments dominate the graft-onto process.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Zhaoyi Luo, Xianjie Pan, Fanqi Liu, Quanxi Yi, Yanning Zeng, Yunhua Chen, Chaoyang Wang
Summary: This study provides a method to prepare high-performance epoxy materials with good malleability and thermal stability. The materials have self-healing and welding capabilities, thanks to the addition of specific chemical bonds and network structures. They exhibit mechanical properties comparable to commercial epoxy resins and show great potential for sustainable industrial development.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Chaoji Xiong, Hao Wang, Lihua Deng, Kun Liang, Chunhua Wu, Wei Wu, Qian Chen
Summary: In this study, four polyamides were synthesized and their adsorption performances for Hg2+ in aqueous systems were investigated. The polyamides exhibited high adsorption capacities and excellent reusability, with the involvement of sulfur, nitrogen, and oxygen in the chemical adsorption process of Hg2+.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Siim Laanesoo, Olivier Bonjour, Rauno Sedrik, Iris Tamsalu, Patric Jannasch, Lauri Vares
Summary: The insertion of rigid aliphatic or aromatic building blocks in polymer structures is an effective way to synthesize high -Tg polymer materials. In this study, a series of isosorbide-2-aryl carboxylate-5-methacrylate monomers (ArIMAs) were synthesized by functionalizing isosorbide 5-methacrylate with various aromatic lignin-inspired esters. These monomers were polymerized to obtain high molecular-weight poly(aryl carboxylate isosorbide methacrylates) (PArIMAs). The resulting polymers showed high glass transition temperatures and thermal stability, making them suitable for use as high-performance plastics and coatings.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Yuqian Wu, Weijie Xu, Jianliang Li, Zhangfeng Zhong, Liqing Huang, Shengke Li, Huaping Tan
Summary: This study investigates the improvement of degradation and drug release characteristics of dynamic Schiff base-mediated natural polysaccharide hydrogels using tannic acid (TA), leading to enhanced stability and functionality.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Xi Zhang, Xiangli Kong, Xin Zhou, Yiyan Gao, Yibo Sun, Guanghui Gao, Wei Liu, Kai Shi
Summary: Conductive hydrogels have great development prospects in flexible strain sensors, but long-term direct contact with human skin can cause bacterial infection. A hydrogel with antibacterial, biocompatibility, and toughness was designed and manufactured using a freeze-thaw method. The hydrogel maintains tensile properties and fatigue resistance at low temperatures and is resistant to bacteria. Therefore, hydrogel sensors can be used to monitor human movements.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Wei Zhang, Jiangang Yu, Mingyang Wu, Rui Li, Anqiang Zhang, Yaling Lin
Summary: In this study, polyacrylamide containing quaternary ammonium salts (PAM-X) were synthesized and found to effectively inhibit soil-borne pathogenic fungi while maintaining the balance of microbial population in soil. PAM-X also showed low toxicity to earthworms and fish, providing a new method for the prevention and control of soil-borne fungal diseases.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Jiawen He, Haojie Yu, Li Wang, Jian Yang, Yanhui Zhang, Wenbing Huang, Chenguang Ouyang
Summary: This review discusses the use of polymeric hydrogels for atmospheric water harvesting (AWH), including the mechanism of water sorption, fabrication methods, and strategies for optimizing the structure of hydrogels. The extended applications of hygroscopic photothermal hydrogels, such as agricultural irrigation and dehumidification, are also explored. The challenges and prospects of using polymeric hydrogels for AWH are summarized.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Ying Du, Shuaishuai Lu, Yuanna Sun, Qingshan Li, Xinhai He
Summary: This study introduces a method to improve the performance of hydrogels by incorporating proline, resulting in hydrogels with excellent stretchability, high conductivity, and long-term stability. The hydrogel remains flexible and conductive even at ultra-low temperatures.
EUROPEAN POLYMER JOURNAL
(2024)
