Article
Chemistry, Multidisciplinary
Nadim Eid, Bruno Ameduri, Bernard Boutevin
Summary: The discovery of huge petroleum reserves in the 19th century drove the industrial revolution but also led to concerns over global warming and environmental issues, prompting researchers to seek biorenewable monomers and more sustainable polymer production. Natural feedstocks such as cellulose and hemicellulose have been explored as sources for epoxy resin synthesis, with an aim to replace phthalic moieties in polyethylene terephthalate. The study highlights advancements in preparing diamines and diepoxy monomers from furanic sources, emphasizing the potential of biobased monomers as substitutes for nonrenewable ones in epoxy resin production.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Materials Science, Characterization & Testing
Wanying Li, Jiahao Ma, Shinan Wu, Junying Zhang, Jue Cheng
Summary: This study utilized molecular dynamics simulations to investigate the impact of hydrogen bonds on epoxy networks. The results showed that H-bonds significantly affected the Young's modulus, whereas their influence on T-g was limited compared to factors like molecular weight and steric hindrance. This study provides valuable insights into the behavior of H-bonds in furan rings and may guide the design of epoxy resins effectively.
Review
Materials Science, Multidisciplinary
Filipa A. M. M. Goncalves, Marta Santos, Teresa Cernadas, Patricia Alves, Paula Ferreira
Summary: This review highlights the use of various fillers in epoxy resin systems to improve their properties. The addition of fillers has been found to enhance the toughness of epoxy resins, and carbon nanomaterials and fiber-reinforced polymers are among the most promising fillers. The review also discusses the influence of different fillers on the flame retardancy, mechanical, thermal, and electrical performance of epoxy resin systems.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Yuan Jiang, Jie Yun, Xiangcheng Pan
Summary: The rapid depletion of oil reserves has increased interest in researching biobased polymers derived from renewable resources. Furan-based compounds, due to their aromatic characteristics and sustainability, are considered suitable replacements for petro-sourced chemicals. This study presents a mild and scalable synthesis of furan-based diepoxide monomers from readily available 5-hydroxymethylfurfural (HMF) and furfural. Various diamines were used as curing agents, resulting in a series of biobased epoxy/amine systems. Thermal and mechanical evaluation demonstrated that the synthetic furan-based epoxy resins have the potential to complement current phenyl-based polymer materials.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Polymer Science
Minglu Bu, Xiaoqing Zhang, Tao Zhou, Caihong Lei
Summary: This study developed a new fully bio-based epoxy thermoset based on magnolol, showing significantly temperature-dependent curing rates and excellent thermal stability and mechanical properties.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Polymer Science
Angela Marotta, Noemi Faggio, Cosimo Brondi
Summary: This study investigates the curing mechanism of furan-based epoxy thermosets with methyl nadic anhydride. The curing kinetics were studied using differential scanning calorimetry, revealing that the total heat of reaction and activation energy of the epoxy resin are dependent on the system composition. Isothermal analysis showed that the order of reaction is not only temperature-dependent, but also composition-dependent.
Article
Materials Science, Composites
Ying Li, Yi Wu, Xiaoxiao Huang, Changdan Gong, Qin Shi, Wenying Zhou, Qiwei Cheng
Summary: In order to solve the problem of heat accumulation in electronic devices, researchers have developed new composites with high thermal conductivity. In this study, E-functionalized boron nitride nanosheets/liquid crystal monomer/epoxy-thiol films with high thermal conductivity were prepared using a flexible epoxy-thiol polymer as the matrix and LCM and f-BNNS as thermal fillers via high voltage orientation molding. The results showed that the thermal conductivity of the E-f-BNNS/LCM/Epoxy-thiol films with 30 wt% f-BNNS content reached 1.65 W/m.K, which was 511.11% higher than that of pure epoxy-thiol polymer (0.27 W/m.K). This research provides a simple and feasible method for preparing flexible epoxy polymer films with high thermal conductivity.
POLYMER COMPOSITES
(2023)
Article
Polymer Science
F. A. M. M. Goncalves, P. Ferreira, P. Alves
Summary: The study synthesized a more environmentally friendly epoxy resin based on itaconic acid, bisphenol A, and epichlorohydrin without the use of a catalyst. The results showed that the biobased epoxy resins have promising features for future crosslinking and can replace totally or partially bisphenol A based epoxy resins.
Article
Engineering, Multidisciplinary
Dimitrios Mamalis, Christophe Floreani, Conchur M. O. Bradaigh
Summary: The study systematically investigated the effect of seawater ageing on the mechanical properties of composites made with three types of unidirectional carbon fibers and a novel powder epoxy system. The results showed a significant strength reduction in composites due to seawater ageing, primarily influenced by differences in interfacial adhesion and moisture uptake. Additionally, Finite Element analysis and scanning electron microscopy revealed insights into important modeling parameters and the effects of seawater ageing on the materials.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Chemistry, Applied
Juan Wu, Nuo Liang, Xin Liu, Juan Cheng, Zejun Xu, Tingcheng Li, Menghe Miao, Daohong Zhang
Summary: This study reports the synthesis of N-P skeleton epoxy hyperbranched polymers with controllable branching degree and topological structures. By tuning the branching degree, the shape of the molecular chains can be controlled, resulting in improved properties of the composites.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Nanoscience & Nanotechnology
Qiongyao Peng, Qiuqiu Wu, Jingsi Chen, Tao Wang, Meng Wu, Diling Yang, Xuwen Peng, Jifang Liu, Hao Zhang, Hongbo Zeng
Summary: An instant and repeatable underwater adhesive was developed based on the coacervation of tannic acid and a polymer, offering robust underwater adhesion with excellent repeatability and biological activities, showing great potential for diverse biomedical applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Mathilde Orselly, Julien Devemy, Agathe Bouvet-Marchand, Alain Dequidt, Cedric Loubat, Patrice Malfreyt
Summary: In this study, various epoxy resins were characterized using all-atom molecular dynamics simulations. A multistep cross-linking algorithm was established and key properties such as density, glass temperature, and elastic modulus were calculated. The results were in good agreement with experimental data, with average absolute deviations between 2% and 12%. Additional findings on structure-property relationships, such as the effect of the cross-linking rate and oligomerization of the resin, were highlighted.
Article
Polymer Science
Guangyu Zhu, Xiangrong Chen, Zelin Hong, Muhammad Awais, Chao Dai, Fanbo Meng, Ashish Paramane, Xin Wang, Weimin Liu, Jianqun Zhang
Summary: This paper investigates the effect of DBD plasma-treated nano-Al2O3 particles on the electrical treeing characteristics of epoxy resin at different temperatures. The results show that high temperature has a negative impact on the electrical tree initiation, growth rate, and discharge activities of the nanocomposites. The DBD-treated nanoparticles increase the electrical tree initiation voltage, but decrease the tree growth rate at high temperatures. It is found that the treated nanoparticles affect the trap density and energy level of the composites by generating new chemical bonds, thereby changing their electrical properties.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Biochemical Research Methods
Vyacheslav Bolkvadze, Denys Bondar, Merike Vaher, Evelin Halling, Jelena Gorbatsova, Jekaterina Mazina-Sinkar
Summary: The influence of organic solvents on the electrophoretic separation of phenylethylamines was investigated. The results showed that the organic solvents had no or minor influence on phenylethylamines with only the amine group, but had a drastic effect on phenylethylamines with both the amine and phenolic hydroxyl groups. Dopamine and tyramine exhibited various interactions with protic and aprotic organic solvents. The addition of at least 20% v/v of organic solvent to the background electrolyte achieved baseline separation of the analytes.
JOURNAL OF CHROMATOGRAPHY A
(2022)
Article
Agricultural Engineering
Maoping Lyu, Xiangyu Yang, Jing Li, Fei Xie, Hebo Shi, Xinhu Gong, Xusheng Huang, Dandi Fang, Chaoqun Zhang
Summary: Developing novel multifunctional polymeric materials from biomass to replace traditional electric encapsulation materials is significant for energy consumption and sustainable development. This study prepared bio-based epoxy thermosets from different epoxidized plant oils and investigated their properties and structure. Among them, soybean oil-based thermoset showed superior performance and was identified as a suitable candidate for encapsulation materials.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
