Article
Polymer Science
Yalei Liu, Xinhui Kou, Chen Xu, Wei Zhou, Hongshu Zhang, Fusheng Liu, Yong Shen, Zhibo Li
Summary: The chemoselective ring-opening copolymerization (ROCP) of MVL with CL has been achieved using an organophosphazene/urea binary catalyst, resulting in functional P(MVL-co-CL) copolyesters with a modifiable double bond. The pendent double bond of the copolyesters can be post-functionalized by the thiol-Michael addition reaction to obtain thiolated copolyesters.
Article
Polymer Science
Chun-Juei Chang, Wei Lee, Yu-Chi Liou, Yu-Lun Chang, Yi-Chun Lai, Shangwu Ding, Hsuan-Ying Chen, Hsing-Yin Chen, Yung-Chi Chang
Summary: The study demonstrated that dinuclear aluminum complexes exhibited higher catalytic activity than mononuclear aluminum complexes, particularly those with 1,3-substituted phenyl ligands. One Al atom in the dinuclear Al system acted as an electron-withdrawing group, influencing the other Al atom through associated aromatic ligands, thereby enhancing catalytic activity for the ROP of CL.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Biochemistry & Molecular Biology
Ahmed Abd El-Fattah, Elizabeth Grillo Fernandes, Federica Chiellini, Emo Chiellini
Summary: Amphiphilic copolymers with interesting architecture and tunable properties are promising materials for biomedical applications. Enzymatic catalysis provides a suitable alternative for the preparation of these materials without the use of toxic catalysts. The structure-property relationship of copolymers was studied by varying the molecular weight of Pluronic (EPE) and the molar ratios between ε-caprolactone monomer and EPE macro-initiator (M/In). The obtained copolymers were chemically characterized and their morphologies evaluated. The results showed a correlation between the differential scanning calorimetry data and X-ray diffraction data, suggesting the importance of the central block length in crystal formation. Preliminary cytotoxicity experiments confirmed the non-toxic nature of the copolymers.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Polymer Science
Masato Suzuki, Aya Watanabe, Raimu Kawai, Ryo Sato, Shin-ichi Matsuoka, Susumu Kawauchi
Summary: This study reports the ring-opening polymerization of thiolactide, where thiolactic acid undergoes cyclic condensation to form rac-thiolactide, which is then polymerized using a combination of thiol as initiator and DBU as catalyst. The polymerization process was found to be in equilibrium and displayed different structural characteristics and degradability compared to polylactide.
Article
Polymer Science
Watcharee Funfuenha, Winita Punyodom, Puttinan Meepowpan, Wanich Limwanich
Summary: Microwave irradiation was successfully used to improve the solvent-free ring-opening polymerization of ε-caprolactone with different n-butyltin(IV) chloride initiators. The performance of these initiators was compared to the conventional tin(II) 2-ethylhexanoate. The presence of chlorine atom in the n-butyltin(IV) chloride initiators played a significant role in controlling the molecular weight of the polymer.
Article
Polymer Science
Monique J. Leite, Tamara Agner, Fabricio Machado, Brenno A. D. Neto, Pedro H. H. Araujo, Claudia Sayer
Summary: This study utilized an iron-containing imidazolium-based ionic liquid as a catalyst to efficiently catalyze the ring-opening polymerization of epsilon-caprolactone under mild reaction conditions, resulting in the synthesis of polycaprolactones with high yields and narrow molecular weight distributions.
JOURNAL OF POLYMER RESEARCH
(2022)
Article
Polymer Science
Yuliya A. Piskun, Evgenii A. Ksendzov, Anastasiya V. Resko, Mikhail A. Soldatov, Peter Timashev, Hongzhi Liu, Irina V. Vasilenko, Sergei V. Kostjuk
Summary: The bulk ring-opening polymerization of epsilon-caprolactone was studied using a phosphazene-containing porous polymeric material (HPCP) as the catalyst at high reaction temperatures (130-150 degrees). HPCP, in combination with benzyl alcohol as an initiator, enabled the controlled living ROP of epsilon-caprolactone, producing polyesters with controlled molecular weights up to 6000 g/mol and moderate polydispersity. Higher molecular weight poly(epsilon-caprolactone) was obtained at a lower temperature of 130 degrees C. The HPCP catalyst demonstrated high thermal and chemical stability, allowing for reuse in multiple cycles without significant loss in efficiency. A tentative mechanism involving the activation of the initiator through the basic sites of the catalyst was proposed.
Article
Thermodynamics
Winita Punyodom, Puttinan Meepowpan, Wanich Limwanich
Summary: The kinetics of the ring-opening polymerization of epsilon-caprolactone initiated by tin(II) chloride and zinc(II) chloride were thoroughly investigated using DSC. The activation parameters were successfully determined utilizing the transition state theory and isoconversional method, showing that tin(II) chloride exhibited higher reactivity compared to zinc(II) chloride. The study provided valuable insights into the transition state formulation in the ROP of cyclic esters with different initiating systems, which is essential for future research in this field.
THERMOCHIMICA ACTA
(2022)
Article
Biochemistry & Molecular Biology
Maxim V. V. Zabalov, Badma N. N. Mankaev, Mikhail P. P. Egorov, Sergey S. S. Karlov
Summary: Density functional theory simulations were conducted to investigate the ring-opening copolymerization of epsilon-caprolactone and L-lactide using a novel gallium complex with an aminobis(phenolate) ligand. The results show that the copolymerization with this catalyst exhibits a faster polymerization rate for epsilon-caprolactone than for L-lactide, suggesting the formation of a predominantly block copolymer composed of epsilon-caprolactone and L-lactide.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Hai-Bo Wu, Xian-Tai Zhou, Xiao-Wu Zhou, Yan-Xiong Fang
Summary: A feasible industrial method for poly(e-caprolactone) (PCL) preparation using benzoic acid as organocatalyst was developed. Benzoic acid was proved to efficiently catalyze the ring-opening polymerization of e-caprolactone (e-CL) under mild conditions. The conversion of e-CL to PCL reached 84.7% under optimized reaction conditions, with a number-average molecular weight (Mn) of 7700 g/mol and dispersity (PDI) of 1.25. Additionally, a monomer-activated ring-opening polymerization mechanism mediated by benzoic acid was proposed.
Article
Polymer Science
Inara Ahmadova, Shamo Tapdiqov, Mehmet S. Eroglu, Muge Sennaroglu Bostan
Summary: This study investigated the microwave-assisted ring opening polymerization of ε-caprolactone using different carboxylic acids as initiators. The results demonstrated that microwave-assisted polymerization is a useful technique for synthesizing low molecular weight polycaprolactone without undesirable impurities.
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Chemistry, Physical
Wanich Limwanich, Nawasit Rakbamrung, Puttinan Meepowpan, Watcharee Funfuenha, Jutamas Kongsuk, Winita Punyodom
Summary: In this study, metal chlorides with different metal active centers were used as initiators in the solvent-free ring-opening polymerization of epsilon-caprolactone. The reactivity of these metal chlorides was compared using differential scanning calorimetry, and the polymerization mechanism was proposed. The results showed that Sn-containing initiators were more effective in the synthesis of poly(epsilon-caprolactone) than Al, Mg, and Zn derivatives. The number of chloride and n-butyl groups played an important role in the reactivity and molecular weight of the polymer.
REACTION KINETICS MECHANISMS AND CATALYSIS
(2023)
Article
Polymer Science
Yutthana Wongnongwa, Setsiri Haesuwannakij, Kwanchanok Udomsasporn, Phongnarin Chumsaeng, Anucha Watcharapasorn, Khamphee Phomphrai, Siriporn Jungsuttiwong
Summary: Polymerization of biodegradable lactide and lactone has been extensively investigated. Density functional theory calculations were used to study the initiation and first propagation for ring-opening polymerization mechanisms of L-lactide (LA) and e-caprolactone (CL) on aluminum complexes. The results showed that the ROP mechanisms of LA and CL on different catalysts were classified into homopolymerization and copolymerization. The understanding gained in this study could contribute to the development of high-performance catalysts for biodegradable lactide and lactone ROP reactions.
Article
Chemistry, Inorganic & Nuclear
Damilola C. Akintayo, Wisdom A. Munzeiwa, Sreekantha B. Jonnalagadda, Bernard Omondi
Summary: A series of nine Zn(II) carboxylate complexes stabilized by monodentate pyridyl Schiff base ligands were synthesized and characterized. The molecular structures of these complexes were determined using single-crystal X-ray diffraction and found to have different nuclearities. These carboxylate complexes displayed good catalytic activity in the ring-opening polymerization of epsilon-caprolactone and rac-lactide at elevated temperatures. The catalytic activity was influenced by the nuclearity and coordination geometry of the complexes.
INORGANICA CHIMICA ACTA
(2022)
Article
Chemistry, Applied
Aoi Nakashima, Kaho Kohori, Kazuya Yamamoto, Jun-ichi Kadokawa
Summary: Chitin hexanoate-graft-poly(epsilon-caprolactone) (ChHex-g-PCL) was found to be thermoplastic, and the thermoplasticity was confirmed by the formation of a melt-pressed film. Chitin hexanoates were prepared by hexanoylation of chitin and then the surface-initiated ring-opening graft polymerization of epsilon-caprolactone was conducted to graft PCL chains onto the hydroxy groups of chitin hexanoates. The molar substitution and degree of polymerization of the PCL graft chains were influenced by the catalyst, reaction time, and degree of substitution.
CARBOHYDRATE POLYMERS
(2022)
Article
Engineering, Environmental
Xin Hu, Hui Zhang, Deqi Wu, Dongmei Yin, Ning Zhu, Kai Guo, Chunhua Lu
Summary: In this study, covalently bonded cross-linked inorganic-polymer nanocomposites were designed and prepared. By improving the dispersity of nanofillers in the matrix and forming a network structure, increased dielectric constant, suppressed dielectric loss, and elevated breakdown strength were achieved. The optimal sample exhibited an ultrahigh energy density, providing a potential alternative for the design of high-performance dielectric materials.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Shuangfei Zhao, Yingying Nie, Yimin Wei, Pengjie Yu, Wei He, Ning Zhu, Yuguang Li, Dong Ji, Kai Guo
Summary: The uniformity of mixing plays a crucial role in liquid-liquid two-phase chemical processes. This study proposes a specific surface area ratio to quantify the uniformity and designs a millimeter-scale mixer with a special baffle structure. By optimizing the baffle parameters, the specific surface area ratio and treatment capacity of the mixer are significantly improved.
INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING
(2023)
Article
Engineering, Chemical
Yingying Nie, Shuangfei Zhao, Pengjie Yu, Yimin Wei, Runze Hu, Wei He, Ning Zhu, Yuguang Li, Dong Ji, Kai Guo
Summary: Due to scale effects, directly enlarging the size of the micromixer is an easy way to reduce the efficiency of mass and heat transfer in the continuous flow chemical process. A scale-up microfluidic mixer with a porous structure was designed to improve the mass and heat transfer efficiency. The effects of rotation angle, porosity, and baffle spacing were studied to optimize the mixer structure. Compared with the 1 mm mixer without structure, the scale-up mixer has a higher mixing efficiency and an 80% reduction in energy consumption at Re >= 700. The heat transfer efficiency of the mixer during fluid heating was evaluated using a Nusselt number. The results show that the porous baffle promotes the generation of secondary flow and enhances the heat transfer effect, making its Nu increase by three times compared with the unstructured mixer. The scale-up microfluidic mixer with a porous structure effectively improves the mass and heat transfer performance. This study can provide a reference for the design or development of a novel scale-up mixer.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Applied
Huan Liang, Dongmei Yin, Lina Shi, Yihuan Liu, Xin Hu, Ning Zhu, Kai Guo
Summary: Functionalized cellulose has gained research interests for its potential in highly functional and environmentally friendly materials. Surface modification of cellulose via photo-induced click reaction integrates the advantages of photochemistry, click reaction, and surface modification. In this review, recent progress in cellulose surface modification using photo-induced click reactions is summarized. Different click reactions, such as thiol-X and cycloaddition reactions, are compared and their applications in cellulose modification are discussed. The challenges and outlook of photo-induced click reaction in cellulose surface modification are also addressed.
CARBOHYDRATE POLYMERS
(2023)
Article
Engineering, Environmental
Jiming Yang, Shulin Wang, Fudong Bai, Xingmei Lu, Wei He, Zheng Fang, Ning Zhu, Kai Guo
Summary: Pretreatment of lignocellulose with a binary system consisting of 1-n-butyl-3-methylimidazole chloride (BMIMCl) and arginine (Arg) at temperatures higher than the glass transition temperature of lignin (Tg-lignin) can effectively reduce cellulose crystallinity and lignin content, improving enzymatic hydrolysis efficiency and reducing enzyme dosage.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Thermodynamics
Pengjie Yu, Shuangfei Zhao, Yingying Nie, Yimin Wei, Runze Hu, Wei He, Ning Zhu, Yuguang Li, Dong Ji, Kai Guo
Summary: This study designed and optimized a novel mixer with triangular-notched rectangular baffles structure, and characterized its performance by combining heat and mass transfer computational fluid dynamics (CFD) method. The results showed that the optimized mixer had a significant increase in mixing efficiency and heat transfer compared to the mixer without baffles structure. Furthermore, the scale-up strategy for continuous flow chemical process enhancement was provided by enlarging the size of the mixer with triangular-notched rectangular baffles structures.
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
(2023)
Article
Chemistry, Physical
Shucheng Liu, Ying Sun, Danzhao Guo, Yuying Mao, Bin Bai, Zhenjiang Li
Summary: Capsule-like boronate affinity covalent organic framework microcapsules (BA-TAPB-BTAC-BPTA MC) were successfully synthesized through a two-step continuous Pickering emulsion interfacial assembly. The microcapsules exhibited excellent adsorption capacity (20.36 μmol g-1) and stability (93.57% after 5 cycles) for selective separation of Naringin (NRG) in a phosphate buffer/methanol solution. This study provides a promising strategy for the construction of affinity ligand COFs microcapsules with fast penetrability and multilayered binding sites for separation and purification of industrial samples.
APPLIED SURFACE SCIENCE
(2023)
Article
Energy & Fuels
Bo Liu, Tong Duan, Zhenjiang Li, Weizhou Huang, Jinlan Li, Tianyu Zhu, Canliang Ma, Jie Sun, Kai Guo
Summary: The metal-and halide-free catalyst DABCO center dot HSac, consisting of 1,4-diazabicyclo[2.2.2]octane (DABCO) and saccharin (HSac), effectively catalyzes the cycloaddition of CO2 into epoxides. The catalytic cycle involves the nucleophilic attack of the saccharinate anion on the methylene carbon of the epoxide ring, while the onium cation DABCO-H+ activates the epoxide. The use of non-halide anions as nucleophiles in halide-free catalyst design expands the possibilities for catalyst discovery.
Article
Polymer Science
Yuanyuan Qu, Junyuan Hu, Fengzhen Guo, Dong Ji, Yuguang Li, Zhenjiang Li, Yunsheng Xu, Jin Huang, Lili Zhao, Kai Guo
Summary: Controlling polymerization thermodynamics and kinetics allows for the creation of polymers with specific properties. In this study, the ring-opening polymerization of tetraethylene glycol carbonate (4EGMC) was carried out using an alkali cation (M+)-based binary catalytic system at room temperature. The introduction of a guanidine catalyst (TBD) significantly accelerated the reaction, with the alkali cation-assisted ring-opening polymerization of macrocyclic carbonate occurring approximately 120-270 times faster compared to the reaction without an alkali metal cation. The interaction between 4EGMC and M+ increased the ring strain and altered the driving force of polymerization, highlighting the crucial role of alkali cations in regulating the ring-opening polymerization of macrocyclic carbonate.
Article
Polymer Science
Yihuan Liu, Guoqing Zuo, Han Gao, Zhao Wu, Wei Huang, Canliang Ma, Jie Yin, Xin Hu, Ning Zhu, Kai Guo
Summary: Poly(epsilon-caprolactone-co-epsilon-caprolactam) was successfully synthesized through ring-opening copolymerization and its thermal and mechanical properties were investigated. The results showed that the thermal properties of the polymer varied with the ester content, and the mechanical properties decreased with increasing epsilon-caprolactone incorporation.
POLYMER INTERNATIONAL
(2023)
Article
Chemistry, Physical
Xuesuo Ma, Jiaxi Xu, Jingjing Liu, Jun He, Tong Chang, Qingbiao Yang, Ning Li, Dong Qian, Zhenjiang Li
Summary: H-bonding has achieved significant progress by utilizing an H-bond donor (HBD) and an H-bond acceptor (HBA). This study introduces a new type of organic ion pair that exhibits cooperative catalytic effects. A new mechanism of H-bonding catalysis is proposed.
Article
Chemistry, Physical
Zhihao Zhang, Yongwei Ni, Zhenjiang Li, Jun He, Xin Zou, Xin Yuan, Ziqi Liu, Shaoju Cao, Canliang Ma, Kai Guo
Summary: We developed a neutral organocatalyst, amino-cyclopro-penium halide, for the [3 + 2] cycloaddition of glycidol and isocyanate to prepare optically active oxazolidinone. The presence of an organic ion pair allowed for the coupling of glycidol with isocyanate followed by cyclization. The mild H-bonding coordination between the catalyst and substrate prevented non-selective ring-opening and racemization.
MOLECULAR CATALYSIS
(2023)
Article
Materials Science, Multidisciplinary
Na Shi, Longlin Lu, Fengzhen Guo, Zhenjiang Li, Lei Shen, Jin Huang, Kai Guo
Summary: This article reports a one-pot, one-step strategy for synthesizing cyclic amphiphilic block copolymers. The copolymerization temperature affects the block length of the copolymer, and scanning and transmission electron microscopy reveal the formation of nanostructures.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Wei Lu, Ruijia Wang, Muqing Si, Yi Zhang, Shuangshuang Wu, Ning Zhu, Wenqin Wang, Tao Chen
Summary: In this study, robust fluorescent polymeric hydrogel actuators with spatially anisotropic structures were constructed using an interfacial supramolecular assembly (ISA) approach, enabling control over synergistic shape/color-changing behaviors. The proposed ISA approach is universal and expected to open new avenues for developing bioinspired intelligent soft actuators/robotics with selective spatial shape/color-changing behaviors.
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)
