Article
Polymer Science
Nalini Sharma, Ajay Singh, Raj Kumar Dutta
Summary: A new biodegradable phosphate formulation PDK was developed in this study, showing good swelling and release performance through the use of PVA, kaolin clay, and DAhP. Under optimal conditions, PDK hydrogel demonstrated the best release and swelling results.
Article
Polymer Science
Yongzhen Lei, Long Mao, Heping Zhu, Jin Yao
Summary: This study successfully designed and synthesized novel nanocomposite films based on mussel bionics, prepared LDHs@TA-Ti/C-CS/PVA nanocomposite films by solution casting method, and improved water resistance, UV barrier, tensile strength, and antibacterial properties while maintaining good transparency.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Engineering, Geological
Lang Liu, Silvio B. Giger, Derek Martin, Rick Chalaturnyk, Kristof Schuster, Nathan Deisman, Lukas Keller
Summary: Opalinus Clay is the designated host rock for a deep geological repository of radioactive waste in Switzerland. The determination of its geo-mechanical properties relies heavily on laboratory tests on small specimens. The pressuremeter tests were performed in Opalinus Clay to assess its in-situ elastic stiffness at a larger scale. The shear modulus of the Opalinus Clay is dependent on the expansion pressure and exhibits a nonlinear dependence on strain increment.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Engineering, Geological
Hasan Ghasemzadeh, Aida Mehrpajouh, Malihe Pishvaei
Summary: The geotechnical behavior of a mixture of kaolinite and vinyl polymers with different monomer types was studied in laboratory tests. Results showed changes in soil microstructures and significant improvement in clay's shear strength parameters with all monomer types. The polyvinyl acetate stabilizer demonstrated the highest strength, but also increased soil swelling parameters, while the poly(methyl methacrylate-co-butyl acrylate) stabilizer showed better performance in reducing swelling and enhancing soil strength properties.
ENGINEERING GEOLOGY
(2021)
Article
Engineering, Environmental
Peng Wang, Baoluo He, Yixuan Du, Biwen Wang, Jingde Gao, Shujuan Liu, Qian Ye, Feng Zhou
Summary: Marine corrosion and biofouling are significant challenges in the marine industry. Traditional coatings are insufficient in providing both antifouling and anticorrosion properties. In this study, we successfully developed a nanocomposite coating utilizing block copolymer-functionalized Ti3C2Tx, which demonstrated satisfactory antifouling and anticorrosion performances.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Ambili Ramanthrikkovil Variyam, Yuval Agam, Alessandro Paradisi, Carlo Augusto Bortolotti, Nadav Amdursky
Summary: This article investigates the use of mixed ionic-electronic conductive biopolymers for electronic and bioelectronic applications. The authors demonstrate that by modifying specific amino acids of a protein-based biopolymer with naphthalenediimide (NDI), the electronic transport of the material can be improved without compromising its native ionic transport. The study also shows that by reducing the NDI moieties, a high conductivity value can be achieved. The easy post-polymerization functionalization chemistry of NDI makes this new strategy highly attractive for the development of sustainable mixed conductors using biopolymers.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Green & Sustainable Science & Technology
Nazanin Alipour, Emma Stromberg, Jonas Enebro, Mikael S. Hedenqvist
Summary: A methodology has been developed to qualitatively assess particle losses from nano-composites during service life, which can be extended to quantitative analysis. Through testing, it was observed that fillers and nanocomposite particles can be released even in 'mild' degradation conditions, posing environmental and health concerns.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Biochemistry & Molecular Biology
Franciani C. Sentanin, Willian R. Caliman, Rodrigo C. Sabadini, Carla C. S. Cavalheiro, Rui F. P. Pereira, Maria M. Silva, Agnieszka Pawlicka
Summary: Nanocomposite polymer electrolytes were synthesized using sodium alginate and modified montmorillonite clays, and characterized by X-ray diffraction and electrochemical impedance spectroscopy. The results showed that adding clay could improve the conductivity of the electrolytes, with higher clay content promoting the formation of intercalated structures.
Article
Polymer Science
Cinzia Cristiani, Maurizio Bellotto, Giovanni Dotelli, Paola Gallo Stampino, Saverio Latorrata, Elisabetta Finocchio
Summary: This study aims to develop an efficient method for recovering rare earths and transition metals from waste electrical and electronic equipment. The capture and release capability of mineral clays and activated carbons are evaluated in lab-scale experiments. The results show that modified sorbents significantly enhance the capture capability of the metals, and the metals can be released and recovered through acid treatment.
Article
Polymer Science
Tianbo Deng, Binbin Xu, Ling Zhang, Chunzhong Li
Summary: This study demonstrates a generic approach to fabricate multifunctional poly(vinyl alcohol) (PVA)-based nanocomposite films through a solvent evaporation method with modified graphene oxide (GO) nanosheets as functional fillers. The combination of anchored bottlebrush polymers (BBPs) and GO nanosheets leads to the formation of well-dispersed and aligned GO nanosheets in the PVA matrix, resulting in high photothermal efficiency, UV resistance, exceptional gas barrier, and superior antimicrobial property. This research provides a new approach for designing multifunctional nanocomposites with ordered structures.
Article
Construction & Building Technology
Panagiotis A. Danoglidis, Cory M. Thomas, Myrsini E. Maglogianni, Mark C. Hersam, Maria S. Konsta-Gdoutos
Summary: Portland cement-based nanocomposites with low volume fractions of hBN nanoplatelets were prepared successfully through exfoliation and functionalization of hBN using ball milling and sonicated-assisted dispersion. AFM and Raman analysis were utilized to evaluate the properties of hBN nanoplatelets, while FTIR was used to identify the functional groups on functionalized hBN. The results demonstrated that the functionalization process successfully achieved few-layer thicknesses of hBN nanoplatelets, leading to suspensions with high colloidal stability. The interaction between hydroxyl and carboxyl groups on the hBN surface and Ca2+ ions of CSH improved the load-transfer efficiency, resulting in significant enhancement in flexural strength, compressive strength, Young's modulus, and fracture energy of the hBN reinforced cementitious composites.
CEMENT & CONCRETE COMPOSITES
(2023)
Article
Crystallography
Jin Motoyanagi, Ayane Fujishima, Masahiko Minoda
Summary: This study investigates a new amphipathic poly(vinyl ether) with an SP moiety, exploring its photoresponsive properties and the control of self-assembly through photoirradiation.
Review
Chemistry, Multidisciplinary
Jiansen Pan, Xiaoqing Ai, Chunfeng Ma, Guangzhao Zhang
Summary: This article reviews the recent progress in degradable vinyl polymers for marine anti-biofouling, focusing on the strategies for preparing these polymers, the synthesis and performance of various types of degradable polymers, and their potential applications. Polymers with degradable main chains and hydrolyzable side groups combine the advantages of SPC and degradable polymers, making them promising materials for high-efficiency, long-lasting, environmentally friendly, and broad-spectrum coatings to inhibit marine biofouling.
ACCOUNTS OF CHEMICAL RESEARCH
(2022)
Article
Polymer Science
Alexander Korolev, Maxim Mishnev, Nikolai Ivanovich Vatin, Anastasia Ignatova
Summary: The study on the rigidity and deformation characteristics of polymer materials under elevated temperatures is crucial for engineering and applications. The analysis of thermo-relaxation can provide important insights for the design and performance optimization of polymer materials.
Article
Materials Science, Composites
Tianxiang Chen, Sina Chen, Jinyun Wang, Tengfei Lin, Weihang Wu, Weijin Yang, Yu Wang
Summary: The incorporation of HNTs was found to enhance the mechanical properties and controlled release ability of PVA composite sponges; composite sponges exhibited better thermal stability and water absorption capacity compared to pure PVA sponges.
POLYMER COMPOSITES
(2021)
Review
Chemistry, Physical
Jaqueline F. de Souza, Matheus S. Gularte, Rafael F. N. Quadrado, Andre F. P. Biajoli, Andre R. Fajardo
Summary: This paper comprehensively discusses the development and application of catalysts based on Cu-supported in polysaccharide-based materials. Polysaccharides have attractive characteristics that enable the development of support materials with varied sizes and geometry capable of immobilizing various Cu species.
CATALYSIS REVIEWS-SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Physical
Manuel E. G. Winkler, Elisangela P. da Silva, Marcos H. Kunita, Adley F. Rubira
Summary: This study presents a method for obtaining silica particles through pressured carbonation and demonstrates the influence of CO2 pressure on material properties. The simplicity and practical importance of this method, as well as its ability to synthesize various types of silica materials and composites, are highlighted.
Article
Engineering, Environmental
Jaqueline F. de Souza, Emilly C. da Silva, Andre F. P. Biajoli, Daisa H. Bonemann, Anderson S. Ribeiro, Andre R. Fajardo
Summary: Phosphine-functionalized chitosan derivative combined with alginate beads exhibited superior adsorption performance for Cd2+ and Al3+ removal from water. The adsorption process followed pseudo-first-order kinetics and Freundlich isotherm model.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Chemistry, Applied
Jaqueline F. F. de Souza, Thalita F. B. de Aquino, Pamela P. P. Nunes, Ismael C. C. Bellettini, Daniela Hartwig, Raquel G. G. Jacob, Andre R. Fajardo
Summary: Copper-catalyzed reactions supported by solid materials, such as polyethyleneimine-coated polyacrylic acid microparticles (PEI@PAAc/Cu2+), have shown promising application prospects in the synthesis of 3-arylselanylindoles.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Green & Sustainable Science & Technology
Julie S. da Costa, Andre R. Fajardo
Summary: The study demonstrates that coating the surface of Luffa cylindrica fibers with polypyrrole/stearic acid composite can enhance its adsorption capacity towards sodium diclofenac and change its hydrophilicity to hydrophobicity, benefiting the interaction with sodium diclofenac.
JOURNAL OF CLEANER PRODUCTION
(2023)
Correction
Chemistry, Applied
Rafael F. N. Quadrado, Karine L. Macagnan, Angelita S. Moreira, Andre R. Fajardo
REACTIVE & FUNCTIONAL POLYMERS
(2023)
Article
Environmental Sciences
Emilly C. Silva, Victoria R. Soares, Andre R. Fajardo
Summary: The physicochemical and structural characteristics of magnetic materials can be modulated by exposure to a magnetic field, allowing for enhanced adsorption performance. This study prepared Alginate/Polypyrrole/ZnFe2O4 (Alg/PPy/ZnFe2O4) magnetic beads and investigated their adsorption performance for the drugs acetaminophen (ACT) and ibuprofen (IBU) under the influence of an external magnetic field (EMF). The presence of the EMF altered the swelling and pHPZC behavior of the magnetic beads, enhancing their adsorption capacity for ACT and IBU compared to pristine beads (Alg/PPy). The adsorption mechanism followed a pseudo-second-order and the Freundlich isotherm. Additionally, the magnetic beads maintained a high adsorption capacity even after multiple reuse cycles.
Article
Chemistry, Physical
Rafael F. N. Quadrado, Thiago A. L. Burgo, Thaise D. Fussinger, Grazielle G. Rossi, Marli M. A. de Campos, Bernardo A. Iglesias, Andre R. Fajardo
Summary: Responsive materials combining photo-responsive molecules and polysaccharides can be utilized for controlled drug delivery using light as an external stimulus. In this study, a light-responsive hybrid film of Ca2+-cross-linked alginate (ALG) and 3-PtTPyP was developed for drug delivery. The film exhibited light-induced weight loss due to the degradation of ALG matrix by reactive oxygen species generated by the photo-excited 3-PtTPyP, enabling controlled release of hydrocortisone (HC). The hybrid film also demonstrated photodynamic action against mycobacteria strains, suggesting its potential applications in antibacterial photodynamic therapy.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Polymer Science
Henrique P. Mota, Rafael F. N. Quadrado, Andre R. Fajardo
Summary: A novel multi-network hydrogel with self-healing ability was developed to address the limitations of traditional hydrogels in organic contaminant removal. The hydrogel exhibited improved swelling kinetics, mechanical properties, and self-healing ability, as well as selective adsorption and recycling performance.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Emilly C. Silva, Charlie G. Gomes, Mariana A. Vieira, Andre R. Fajardo
Summary: This study was financially supported by Conselho Nacional de Desenvolvimento Cientifico e Tecnológico, Brazil (CNPq) and PQ fellowship (Process 303125/2022-5) to A.R.F. The study also received partial funding from Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Brazil (CAPES/Proap), Finance Code 001. The authors would like to thank CTNano-UFMG (Brazil) for donating MWCNT-f.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Pharmacology & Pharmacy
Guilherme T. Voss, Michael J. Davies, Carl H. Schiesser, Renata L. de Oliveira, Andresa B. Nornberg, Angelita M. Barcellos, Cristiane Luchese, Ethel A. Wilhelm
Summary: This study investigated the use of 1,4-anhydro-4-seleno-D-talitol (SeTal) in gelatin and alginate (Gel-Alg) polymeric films to improve the treatment and attenuation of atopic dermatitis (AD)-like symptoms in mice. The films were able to retain and release SeTal in a controlled manner and effectively attenuated disease symptoms. Moreover, the loaded films showed superior efficiency compared to hydrocortisone (HC) cream, a traditional AD treatment. Overall, incorporating SeTal in biopolymeric films provides a promising alternative for the long-term treatment of AD-type skin diseases.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2023)
Article
Materials Science, Multidisciplinary
Emilly C. Silva, Victoria R. Soares, Andressa B. Nornberg, Andre R. Fajardo
Summary: A new method of using composite hydrogels to remove organic contaminants from water and wastewater was proposed in this study. By incorporating rice husk biochar, the performance of the hydrogels was improved, resulting in enhanced adsorption capacity and recyclability. The composite hydrogels show great potential for practical applications.
ACS APPLIED POLYMER MATERIALS
(2023)
Review
Dentistry, Oral Surgery & Medicine
Andressa da Silva Barboza, Juliana Silva Ribeiro de Andrade, Monika Lamas Ferreira, Carla Lucia David Pena, Julie Silveira da Costa, Andre Ricardo Fajardo, Rafael Guerra Lund
Summary: This systematic review examines the association between propolis and controlled delivery systems in dental medicine, as well as its potential therapeutic action. A search of five databases yielded a total of 2019 records, and after careful examination, 21 studies were included in the review. The findings suggest that propolis has various applications in dental medicine, including cariology, endodontics, periodontics, stomatology, and dental implants, due to its non-cytotoxic, osteoinductive, antimicrobial, and anti-inflammatory properties. Additionally, propolis can be released from DDS for prolonged periods, making it a safe and effective option for dental applications.
Article
Materials Science, Multidisciplinary
Julie S. da Costa, Jaqueline F. de Souza, Debora R. S. dos Santos, Andre R. Fajardo
Summary: This study presents the preparation and characterization of a composite aerogel with a double network of alginate and poly(acrylamide) filled with multi-walled carbon nanotubes. The inclusion of MWCNT resulted in significant changes to the thermal, morphological, mechanical, and swelling properties of the composite compared to the pristine aerogel. The composite aerogel demonstrated excellent adsorption capacity and reusability for cationic dyes, indicating its potential for long-term application.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Chemistry, Applied
Emilly C. Silva, Charlie G. Gomes, Joao Pina, Rui F. P. Pereira, Dina Murtinho, Andre R. Fajardo, Artur J. M. Valente
Summary: This study explores the synthesis and characterization of supramolecular composites made of poly (beta-cyclodextrin-co-citric acid) and carbon quantum dots (QDs). These composites can serve as both adsorbents and photoluminescent probes to monitor and treat harmful metal ions in the environment.
CARBOHYDRATE POLYMERS
(2024)
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)
