Article
Chemistry, Applied
Qinglu Li, Ruihua Tang, Hao Zhou, Xuxu Hu, Sufeng Zhang
Summary: Flexible energy storage devices are urgently needed for mass production due to the development and popularity of portable electronic devices. In this study, freestanding paper electrodes for supercapacitors were fabricated via a simple and efficient two-step method. These electrodes exhibited remarkable mass specific capacitance, long cycle life, excellent rate performance, and high volumetric specific capacitance and energy density, suggesting their potential as promising materials for flexible supercapacitors.
CARBOHYDRATE POLYMERS
(2023)
Article
Chemistry, Applied
Tomas Lapka, Jarmila Vilcakova, Dusan Kopecky, Jan Prokes, Marcela Dendisova, Robert Moucka, Michal Sedlacik, Fatima Hassouna
Summary: Combining highly conducting one-dimensional nanostructures of polypyrrole with cellulose nanofibers (CNF) into flexible films with tailored electrical conductivity and mechanical properties presents a promising route towards the development of eco-friendly electromagnetic interference shielding devices.
CARBOHYDRATE POLYMERS
(2023)
Article
Polymer Science
Dieter Rahmadiawan, Hairul Abral, Rafi Alzues Kotodeli, Eni Sugiarti, Ahmad Novi Muslimin, Ratna Isnanita Admi, Andril Arafat, Hyun-Joong Kim, S. M. Sapuan, Engkos Achmad Kosasih
Summary: This study successfully prepared and characterized an all-cellulose film from TEMPO-oxidized bacterial cellulose (TOBC) powders without adding metal compounds through ultrasonication. It was found that increasing the ultrasonication power level significantly improved the properties of the film.
Article
Chemistry, Applied
Nour F. Attia, Hyunchul Oh, Sally E. A. El Ashery
Summary: A rational design and fabrication method for multifunctional textile fabrics coatings was developed. Green coatings were prepared from UiO-66 metal-organic-framework decorated with polypyrrole nanoparticles and wrapped with chitosan chains. The coated textiles exhibited high flame retardancy, excellent thermal stability, improved mechanical properties, enhanced UV protection, and electrical conductivity.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Chemistry, Multidisciplinary
Kaiyan Qiu, Ulrike G. K. Wegst
Summary: Freeze-cast bacterial cellulose-alginate (BC-ALG) foams, with a unique pore structure and high strength, exhibit improved mechanical properties and electrical conductivity after carbonization, making them suitable for energy applications and sorbents.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Paper & Wood
Yatao Shao, Zhihong Fan, Mingfeng Zhong, Wei Xu, Chang He, Zhijie Zhang
Summary: PPy/BC composites with nanofiber structure were prepared for efficient removal of Cr(VI) from aqueous solution. The adsorbent exhibited high specific surface area, maximum adsorption capacity, and maintained stability after multiple cycles. The adsorption mechanism involved ion exchange, electrostatic attractions, and chelation of Cr(VI) onto PPy/BC surfaces.
Article
Polymer Science
Fahim Hamidouche, Zohra Ghebache, Naima Boudieb, Moustafa M. S. Sanad, Nacer-Eddine Djelali
Summary: The highly stable zeolite HY/polypyrrole composite material was successfully fabricated using an in-situ chemical polymerization approach, exhibiting improved electrochemical properties and thermal stability.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Sonal Gupta, Udit Acharya, Hana Pistekova, Oumayma Taboubi, Zuzana Moravkova, Martina Kasparova, Petr Humpolicek, Patrycja Bober
Summary: The study investigated a one-step preparation of polypyrrole (PPy) assisted by an organic dye, acriflavine hydrochloride (AF), resulting in the development of PPy nanofibers with enhanced conductivity and capacitance, as well as improved antibacterial properties. The interaction between AF and PPy was confirmed by structural analysis, making the PPy tuned by an organic dye suitable for applications requiring both electroconductivity and antibacterial activity, such as wound healing, electrochemical sensors, and regenerative medicine.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Materials Science, Paper & Wood
Lingling Fan, Wenfeng Zheng, Yuan Yang, Yan Sun, Songlin Peng, Jie Xu, Guangfu Yin
Summary: Bacterial cellulose/polypyrrole nanofibrous composites have been extensively studied for supercapacitors due to their large specific surface area and excellent tensile strength. However, the structural pulverization of polypyrrole leads to inferior cycling stability. In this study, nanofibrous composite membranes of MXene, PPy, and oxidized bacterial cellulose were prepared for flexible supercapacitor electrodes, showing enhanced performance.
Article
Polymer Science
Oladipo Folorunso, Yskandar Hamam, Rotimi Sadiku, Suprakas Sinha Ray, Neeraj Kumar
Summary: A hybrid of graphene nanoplatelets with polypyrrole was fabricated, with electrical conductivity measurements showing a percolation threshold. The Taherian and Clingerman models were found to closely describe the experimental data for the hybrids. The study demonstrates the significant influence of graphene nanoplatelets on modifying polypyrrole for energy storage applications.
Article
Materials Science, Paper & Wood
Nattinee Krathumkhet, Toyoko Imae, Nophawan Paradee
Summary: This study focused on electrically controlled transdermal drug delivery using pectin/bacteria cellulose hydrogel composites. The research showed that drug release was optimized at 30 wt% bacteria cellulose content, and could be increased to 78% under applied electrical potential. The hydrogel composites also exhibited remarkable antibacterial activity, making them valuable alternative materials for transdermal drug delivery.
Article
Nanoscience & Nanotechnology
Ting Deng, Xiaoyuan Shi, Wei Zhang, Zizhun Wang, Weitao Zheng
Summary: By introducing a template-growth strategy, the specific and areal capacitances of Metal Organic Frameworks (MOFs) as electrode materials for supercapacitors can be enhanced, leading to improved electrochemical performance.
Article
Materials Science, Textiles
Yuanjun Liu, Huangyu Xue, Yanyan Liu, Jiaqi Zhao, Haiying Wu, Xiaoming Zhao
Summary: In this study, polypyrrole coated conductive fabrics were prepared using pyrrole as the monomer, p-toluene sulfonic acid as the doping agent, and ammonium persulfate as the oxidant through the simple method of situ polymerization of the liquid phase. Six types of conductive polypyrrole coated fabrics were prepared using different base materials, and their electrical conductivity and washing fastness were compared. The results showed that the conductivity of polypyrrole coated terylene fabrics was the best, followed by nylon fabrics and wool fabrics. The distribution of polypyrrole on different base cloths was more homogeneous, and the combination fastness with polyester-cotton, nylon, and wool was better than with basalt and aramid.
FIBRES & TEXTILES IN EASTERN EUROPE
(2023)
Article
Nanoscience & Nanotechnology
Zhiwei Liu, Lina Yue, Ceyi Wang, Deyang Li, Ligang Tang, Ruixin Ma, Bo Li, Tianrui Yang, Xiang Liu, Qian Xu, Jiasheng Wang, Ming Gao
Summary: Carbon materials derived from bacterial cellulose were used as anodes in potassium-ion batteries. A novel composite of polypyrrole was creatively realized on the surface of bacterial cellulose nanofibers. The carbonized composite showed a high capacity and long cycling stability, attributed to nitrogen doping and defect carbon materials. This study provides a guideline for developing bacterial cellulose composites in energy storage.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Oladipo Folorunso, Yskandar Hamam, Rotimi Sadiku, Suprakas Sinha Ray
Summary: This study thoroughly investigated the electrical properties of graphene-polypyrrole nanocomposites using a numerical model based on Simmons and McCullough equations. The results showed that tunneling resistance is a critical factor determining electron transport, and the electrical conductivity of the composite depends on the volume fraction of fillers.
Article
Polymer Science
Roberto J. Aguado, Francesc X. Espinach, Fernando Julian, Quim Tarres, Marc Delgado-Aguilar, Pere Mutje
Summary: This study demonstrates the significant improvement in compatibility between poly(lactic acid) (PLA) and hemp fibers through pulping and bleaching processes, making it a viable option for bio-sourced, recyclable, and biodegradable composites. The soda-bleached hemp fibers (SBHFs) showed a large bonding surface area and satisfactory interphase quality, even without any dispersants or compatibilizers. The biocomposite exhibited higher tensile strength than a polypropylene/sized glass fiber composite, while adhering to the principles of green chemistry.
Article
Polymer Science
Maria E. Vallejos, Roberto J. Aguado, Ramon Morcillo-Martin, Jose A. Mendez, Fabiola Vilaseca, Quim Tarres, Pere Mutje
Summary: The growing demand for plant fiber-reinforced composites presents opportunities to compete against glass fiber-reinforced composites. This study focuses on the production and flexural strength of composites made from polypropylene and hemp strands, using maleic anhydride-grafted PP as a compatibilizer. The calculations and results suggest that the use of MAPP at a dosage of 0.06 g per gram of fiber achieved the maximum enhancement in flexural strength.
Article
Chemistry, Multidisciplinary
Amira Najahi, Quim Tarres, Pere Mutje, Marc Delgado-Aguilar, Jean-Luc Putaux, Sami Boufi
Summary: Lignin-containing cellulose nanofibrils (LCNFs) were prepared via TEMPO-mediated oxidation and high-pressure homogenization, and the impact of carboxyl content on the properties of LCNF gel was investigated. It was found that increasing carboxyl content led to decreased lignin content, improved colloidal stability and water contact angle, as well as smaller fibril size, but slightly lower thermal stability. In addition, incorporating LCNFs into a ductile polymer matrix significantly enhanced the tensile strength.
Article
Environmental Sciences
Sergi Arfelis, Roberto J. Aguado, Didem Civancik, Pere Fullana-i-Palmer, M. angels Pelach, Quim Tarres, Marc Delgado-Aguilar
Summary: This paper presents a life cycle assessment of cellulose micro- and nanofibers (CNFs) produced from bleached hardwood kraft pulp via three different pre-treatments. The main finding is that both mechanical and TEMPO-mediated oxidation routes have lower environmental impacts compared to enzymatic pre-treatment, with the TEMPO-mediated oxidation route being particularly effective in selectively oxidizing primary hydroxyl groups.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Polymer Science
Maria E. Vallejos, Fabiola Vilaseca, Jose A. Mendez, Francisco X. Espinach, Roberto J. Aguado, Marc Delgado-Aguilar, Pere Mutje
Summary: In this study, composites of polypropylene (PP) reinforced with hemp strands (HS) were prepared to investigate the impact performance of these composites. The research found that the quality of the interface plays a significant role in the impact resistance of the materials. The main contributors to crack formation are interface strength, fiber dispersion, and fiber pullout, while fiber pullout is the main contributor to crack propagation. The study also examined the water absorption behavior of the composites in different humid environments and found that water diffusion followed a Fickean behavior.
Editorial Material
Polymer Science
Francesc X. Espinach, Quim Tarres
Article
Polymer Science
Faust Seculi, Francesc X. Espinach, Fernando Julian, Marc Delgado-Aguilar, Pere Mutje, Quim Tarres
Summary: Bio-based polymers can meet the demands of society and regulations to minimize environmental impact, especially for companies seeking a smooth transition with less uncertainty. By using BioPE as the matrix, similar to HDPE, abaca-fiber-reinforced composites were obtained and compared with commercial glass-fiber-reinforced HDPE. Micromechanical models were employed to estimate the interface strength and tensile strength of the reinforcements. The addition of 8 wt.% coupling agent improved the interface strength of biocomposites, resulting in tensile properties comparable to commercial glass-fiber-reinforced HDPE composites.
Article
Polymer Science
Faust Seculi, Francesc X. X. Espinach, Fernando Julian, Marc Delgado-Aguilar, Pere Mutje, Quim Tarres
Summary: The use of bio-based matrices and natural fibers as reinforcement is a strategy to obtain materials with competitive mechanical properties, costs, and environmental impacts. In this study, composites reinforced with abaca fibers and different matrices are prepared and tested. The results show that bio-polyethylene as a matrix can provide slightly higher mechanical properties than polyethylene. It is possible to obtain fully bio-based composites with mechanical properties similar to partially bio-based polyolefin or glass fiber-reinforced polyolefin.
Article
Materials Science, Multidisciplinary
David Batet, Fabiola Vilaseca, Eloi Ramon, Juan Pablo Esquivel, Gemma Gabriel
Summary: This paper presents a thorough experimental overview of different printing technologies, ink formulations, and paper-based substrates for green printed electronics design. Three printing techniques, inkjet printing, screen printing, and direct ink writing, are investigated. The electrical properties of selected inks based on carbon and silver are characterized on conventional substrates, and the printing conditions are optimized for various paper-based substrates. The influence of cellulose nanofibers (CNF) as a coating for commercial papers on printing quality is also evaluated. This study facilitates benchmarking tasks for researchers and contributes to the eco-design of flexible green printed electronics.
FLEXIBLE AND PRINTED ELECTRONICS
(2023)
Article
Biochemistry & Molecular Biology
Amira Najahi, Quim Tarres, Marc Delgado-Aguilar, Jean-Luc Putaux, Sami Boufi
Summary: This study successfully prepared lignin-containing cellulose nanofibrils (LCNFs) with a lignin content of up to 21% through hydrothermal treatment and high-pressure homogenization. The presence of lignin added hydrophobicity, UV-shielding capacity, and reduced water sensitivity to the LCNFs. The study also proposed a mechanism explaining how hydrothermal treatment with maleic acid facilitated the disintegration of biomass into nanoscale material. The research showed a feasible and scalable approach for the sustainable production of LCNF suspensions from agricultural residues without the need for preliminary partial delignification.
Review
Agricultural Engineering
Roberto J. Aguado, Andre Mazega, Quim Tarres, Marc Delgado-Aguilar
Summary: This review critically discusses the current and potential applications of anionic and cationic cellulose derivatives, including coagulation-flocculation, thickening and rheology modification, stabilization of colloids or emulsions, adsorption of ions, encapsulation of bioactive compounds, filtration using cellulose-based membranes, and production of antimicrobial materials. The increasing popularity of anionic or cationic nanocellulose is highlighted.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Polymer Science
Faust Seculi, Fernando Julian, Joan Llorens, Francisco X. Espinach, Pere Mutje, Quim Tarres
Summary: There is a growing focus on developing green composites as alternatives to oil-based materials. However, the mechanical properties of these composites are often studied through tensile tests, with little emphasis on the flexural properties. This study investigates the flexural properties of abaca-fiber-reinforced bio-based high-density polyethylene (BioPE) composites and demonstrates the feasibility of replacing oil-based matrices with bio-based composites that exhibit similar flexural properties.
Article
Polymer Science
Roberto J. Aguado, Gabriela A. Bastida, Francisco X. Espinach, Joan Llorens, Quim Tarres, Marc Delgado-Aguilar, Pere Mutje
Summary: This study investigated the incorporation of natural hemp fibers into a poly(lactic acid) matrix to create fully bio-sourced composites. The tensile modulus of the composites linearly increased with the volume fraction of the dispersed fibers, reaching a maximum value of 7.6 Gpa. The performance of the soda-bleached fibers as reinforcement was found to be higher than that of glass fibers, despite their lower intrinsic tensile modulus.
Article
Chemistry, Multidisciplinary
Ana Balea, M. Concepcion Monte, Elena Fuente, Jose Luis Sanchez-Salvador, Quim Tarres, Pere Mutje, Marc Delgado-Aguilar, Carlos Negro
Summary: This paper investigates the influence of various production techniques on the morphological characteristics and properties of nanofibrillated cellulose (CNF) produced from a mixture of recycled fibers. The results show that the pretreatment determines the yield and the potential of high-pressure homogenization (HPH) to enhance fibrillation, thus determining the final CNF properties. This enables effective selection of the most suitable production method to obtain high yield and desired CNF quality for diverse applications.
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)
