Article
Chemistry, Applied
Punugupati Neelambaram, Abhay Shankar, Kesavarao Sykam, D. B. Rohini Kumar, Arindam Chakrabarty, Ramanuj Narayan
Summary: This study focuses on improving the water resistance of coatings by synthesizing copolymers with siloxane moieties. The results show that incorporating siloxanes can enhance the roughness, optical transparency, and water resistance of acrylic coatings.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Materials Science, Multidisciplinary
Sana Ahmed, Mi Ju Bae, Subin Jeong, Ju Hyun Lee, Jin Chul Kim, Young Il Park, In Woo Cheong
Summary: This study successfully synthesized an emulsion polymer with self-healing capability based on a dynamic covalent bonding mechanism. The synthesis and properties of the polymer were confirmed through various analyses. The effects of drying and crosslinking conditions on film formation and properties were also evaluated.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Polymer Science
Boris Bizet, Etienne Grau, Henri Cramail, Jose M. Asua
Summary: The waterborne isocyanate-free grafted poly(hydroxy urethane)-poly(butyl methacrylate) hybrid dispersions were synthesized by miniemulsion polymerization, with the grafting induced by methacrylate functionalities in the poly(hydroxy urethane) and controlled by the degree of functionalization. It was found that grafting allowed for fine tuning of the mechanical properties of the PHU-containing hybrids.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Chemistry, Applied
Elvis Lopes Brito, Bertrand Willocq, Frederic Boschet, Nicholas Ballard
Summary: Although PVC is usually produced industrially by emulsion and suspension polymerization, it is rarely used directly as an aqueous polymer dispersion. However, this study shows that it is possible to produce high PVC content latexes with suitable particle morphology and size distribution for direct film formation. Hybrid PVC/acrylic latexes with a core-shell structure are produced by semi-batch emulsion polymerization using a preformed PVC latex as a seed. By using a bimodal particle size distribution, the packing efficiency of the PVC domains is increased, enabling film formation at room temperature with high PVC content.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Chemistry, Multidisciplinary
Florian Le Goupil, Victor Salvado, Valere Rothan, Thomas Vidil, Guillaume Fleury, Henri Cramail, Etienne Grau
Summary: Fast, low-cost, and efficient energy storage is needed to balance intermittent sustainable energy sources. High-power capacitors made with organic polymers, such as bio-based PHUs, offer a green and scalable solution. These PHUs have high permittivity, high breakdown strength, and low dielectric losses, resulting in comparable energy storage performance to petrochemical materials and high discharge efficiency.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Review
Chemistry, Multidisciplinary
Mhd. Abd. Cader Mhd. Haniffa, Khadija Munawar, Yern Chee Ching, Hazlee Azil Illias, Cheng Hock Chuah
Summary: The demand for polyurethane (PU) continues to rise, but concerns over environmental impact remain. Non-isocyanate poly(hydroxy urethane)s (NIPUs) are seen as sustainable and green alternatives, with exponential market growth projected. The presence of secondary hydroxyl groups in NIPUs allows for enhanced functionalization, with researchers making significant progress in the field of biobased NIPU.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Article
Polymer Science
Liraz Avraham, Rajashekharayya A. Sanguramath, Orit Cohen, Luba Perry, Shulamit Levenberg, Michael S. Silverstein
Summary: This study successfully synthesized macroporous polymer monoliths based on four different polysaccharides using a template synthesis method in oil-in-water high internal phase emulsions. The nature of the polysaccharide and the polymerization catalyst significantly affected the porous structure. Cells were able to adhere to the walls and penetrate into the porous structures in amine-catalyzed monoliths.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Polymer Science
Dominik Wo Losz
Summary: Structure-property relationships of novel non-isocyanate poly(carbonate-urethane)s (NIPCU) based on renewable fatty diamine were studied. The addition of decamethylene carbonate units into the polyurethane structure improved the mechanical properties and solubility of the materials. The optimized molar ratio of urethane to carbonate groups resulted in the highest number-average molar mass and tensile strength.
Article
Materials Science, Multidisciplinary
Alvaro Gomez-Lopez, Bruno Grignard, Inigo Calvo, Christophe Detrembleur, Haritz Sardon
Summary: By combining NH2-PHU-NH2, epoxy resin, and thiol compound, high-shear strength PHU-epoxy hybrid adhesives can be developed and cured at room temperature in short times. These adhesives exhibit superior toughness without compromising lap-shear strength and shear resistance under load and temperature, making them suitable for high-demand applications in the automotive industry.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Polymer Science
Valentina Sabatini, Laura Pellicano, Hermes Farina, Eleonora Pargoletti, Luisa Annunziata, Marco A. Ortenzi, Alessandro Stori, Giuseppe Cappelletti
Summary: The combination of different acrylate-based polymers improved the performance of polyacrylate microcapsules, demonstrating high stability and efficiency. Through the synthesis of complex BUMA based terpolymers and linear copolymers, slow and fast releasing microcapsules were achieved for controlled release of active substances.
Article
Chemistry, Multidisciplinary
Ankit Agrawal, Neha Bansal, Himanshu Raghav, Arijit Jana, Reena Goyal, Debashish Ghosh, Thallada Bhaskar, Bipul Sarkar
Summary: The increasing demand for sustainable energy and chemicals, along with the declining fossil fuel reserves, has led to the search for alternative feedstocks and processes. Short-chain olefins are important for the polyolefin industry and require an alternative process to meet future demands. This study demonstrates that single-cell oil (SCO) derived from the oleaginous yeast Rhodotorula mucilaginosa IIPL32 could be used as a renewable feedstock for olefin production. A PtSn/alumina catalyst showed high selectivity to C2-C4 olefins, which can be attributed to the selective catalytic cracking of long-chain lipid molecules over nanosized PtSn/alumina and the synergy between surface acidic sites and reducible Pt species.
Article
Chemistry, Physical
Noemie Coudon, Laurence Navailles, Frederic Nallet, Isabelle Ly, Ahmed Bentaleb, Jean-Paul Chapel, Laure Beven, Jean-Paul Douliez, Nicolas Martin
Summary: All-aqueous microdroplets produced by liquid-liquid phase separation have been used as promising models of artificial cells and offer new methods for solvent-free encapsulation of fragile solutes. In this study, stable and impermeable water-in-water emulsions were constructed by the interfacial self-assembly of mixed sodium oleate/1-decanol bilayers on dextran-rich droplets. The lipid-based membrane was shown to be impermeable to oligonucleotides, proteins, and a low molecular weight dye.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Applied
Jie Yang, Shuxian Hua, Zehao Huang, Zhengbiao Gu, Li Cheng, Yan Hong
Summary: Different types of starch-based double emulsion (SDE) structures were developed to improve the bioavailability of astaxanthin (AST), with A-type and B-type SDE structures showing smaller droplet diameters and higher stability after simulated gastric digestion. The bioaccessibility of AST-loaded SDEs prepared with HAS was found to be six times higher than digested unencapsulated AST. Thus, SDEs are considered suitable carriers for liposoluble nutrient delivery and bioavailability in various products.
CARBOHYDRATE POLYMERS
(2021)
Article
Biochemistry & Molecular Biology
Xiaoyan Song, Yuge Zhai, Xin Di, Quanzhi Zhao
Summary: This study investigated the lipid digestion of starch-based Pickering emulsions stabilized by starch particles with different oil phases. The results showed that coconut oil had the highest rate of lipid digestion, while increasing starch concentration had positive effects on lipid digestion and increasing oil fraction had negative impacts. Starch-based Pickering emulsion exhibited super stability against oral and gastric digestion, making it a superior delivery system for lipophilic active substances.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Applied
Dominik Wolosz, Aleksandra Marta Fage, Pawel Grzegorz Parzuchowski, Aleksandra Swiderska, Robert Bruell, Peter Elsner
Summary: This paper presents a new synthesis method for isocyanate-free hydrophobically modified ethoxylated urethanes (IFHEURs) as rheological modifiers. The hydrophilic core of IFHEURs was prepared through polyaddition between diamine and poly(ethylene glycol) bis(cyclic carbonate) synthesized using CO2 as a green source. This solvent-and catalyst-free method allowed the incorporation of up to 11 wt% of CO2. Structural analysis confirmed the desired telechelic architecture, and rheological study proved the typical thickening mechanisms of IFHEURs.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Chemistry, Multidisciplinary
Kelechukwu N. Onwukamike, Laurine Lapuyade, Laurence Maille, Stephane Grelier, Etienne Grau, Henri Cramail, Michael A. R. Meier
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2019)
Review
Chemistry, Multidisciplinary
Kelechukwu N. Onwukamike, Stephane Grelier, Etienne Grau, Henri Cramail, Michael A. R. Meier
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2019)
Article
Food Science & Technology
Sylwia Dworakowska, Cedric Le Coz, Guillaume Chollet, Etienne Grau, Henri Cramail
EUROPEAN JOURNAL OF LIPID SCIENCE AND TECHNOLOGY
(2019)
Article
Chemistry, Multidisciplinary
Anderson M. M. S. Medeiros, Cedric Le Coz, Etienne Grau
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2020)
Article
Chemistry, Multidisciplinary
Guillaume Garbay, Lauriane Giraud, Sai Manoj Gali, Georges Hadziioannou, Etienne Grau, Stephane Grelier, Eric Cloutet, Henri Cramail, Cyril Brochon
Article
Chemistry, Multidisciplinary
Fiona Magliozzi, Arthur Scali, Guillaume Chollet, Damien Montarnal, Etienne Grau, Henri Cramail
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2020)
Article
Materials Science, Multidisciplinary
Anderson M. S. Medeiros, Cedric Le Coz, Henri Cramail, Etienne Grau
Summary: This study focused on synthesizing polycaryophyllene with controlled molar mass, using styrene as a chain transfer agent. The resulting Pcar showed varying molar masses and glass transition temperatures, with Pcar@Sty#02 emerging as a promising biobased plasticizer candidate for EPDM, improving flexibility compared to petroleum-based alternatives.
ACS APPLIED POLYMER MATERIALS
(2021)
Review
Polymer Science
Boris Bizet, Etienne Grau, Jose M. Asua, Henri Cramail
Summary: This review summarizes the latest advancements in the development of hybrid nonisocyanate polyurethanes (NIPUs) by combining them with other polymers, such as epoxy, polyacrylic, and silicium-containing polymers. The potential of combining NIPUs with biopolymers is also discussed. The study highlights the importance of synergistic combination of NIPUs with other polymers in the formation of novel materials.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2022)
Article
Polymer Science
Victor Salvado, Marc Dolatkhani, Etienne Grau, Thomas Vidil, Henri Cramail
Summary: The carbonation of biosourced 1,2-diols is a sustainable approach for synthesizing bis-five-membered cyclic carbonates (bis-5CCs), which are precursors for valuable polymers such as polyhydroxyurethanes (PHUs). In this study, we carried out the direct carbonation of optically pure sugar-based butadiene tetraols and obtained vicinal bis-5CCs, erythritol dicarbonate (EDC) and threitol dicarbonate (TDC), while retaining the stereochemistry of the starting tetraols. The aminolysis reaction of these compounds showed that the kinetics and regio-orientation of the ring opening of the 5CCs are highly dependent on their stereochemistry. By utilizing this feature, a one-pot, two-step polymerization procedure was developed to create sequence-controlled PHUs. The experimental results were supported by density functional theory calculations, and a new family of PHUs with tunable sequence and regioregularities was discovered.
Article
Materials Science, Multidisciplinary
Jamie Rubinstein, Etienne Grau, Patrice Dole, Guillaume Chollet, Veronique Coma, Henri Cramail
Summary: This paper reports the synthesis and use of fatty bis-amides as nucleating agents for poly(L-lactide) to enhance its crystallization kinetics and heat deflection temperature. By adjusting the loading and processing time, high crystallinity and excellent thermal performance can be achieved.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Florian Le Goupil, Victor Salvado, Valere Rothan, Thomas Vidil, Guillaume Fleury, Henri Cramail, Etienne Grau
Summary: Fast, low-cost, and efficient energy storage is needed to balance intermittent sustainable energy sources. High-power capacitors made with organic polymers, such as bio-based PHUs, offer a green and scalable solution. These PHUs have high permittivity, high breakdown strength, and low dielectric losses, resulting in comparable energy storage performance to petrochemical materials and high discharge efficiency.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Helene Meheust, Jean-Francois Le Meins, Etienne Grau, Henri Cramail
Summary: This study aimed to design bio-based polyesters as viscosity modifiers for lubricant properties and investigated their thermal properties. Results showed that bio-based polyricinoleate and its saturated homologous polyhydroxystearate have potential applications as viscosity modifiers in organic and mineral oils.
ACS APPLIED POLYMER MATERIALS
(2021)
Review
Materials Science, Multidisciplinary
Lauriane Giraud, Stephane Grelier, Etienne Grau, Georges Hadziioannou, Cyril Brochon, Henri Cramail, Eric Cloutet
JOURNAL OF MATERIALS CHEMISTRY C
(2020)
Article
Polymer Science
Dounia Arcens, Gaelle Le Fer, Etienne Grau, Stephane Grelier, Henri Cramail, Frederic Peruch
Review
Polymer Science
Boris Bizet, Etienne Grau, Henri Cramail, Jose M. Asua
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)