Article
Biochemistry & Molecular Biology
Xiaolong Han, Yi Han, Yujuan Jin, Huafeng Tian, Zhao Wang, Jiawei Huang, Shuang Men, Rakesh Kumar
Summary: This study synthesized bio-based engineering polyester elastomers (BEPE) to enhance the toughness of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and prepared fully bio-based blends. The results showed that the addition of BEPE significantly improved the elongation at break, impact strength, and tensile toughness of the PHBV blends.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Polymer Science
Liuyue Zhong, Yanxin Hao, Junheng Zhang, Fang Wei, Tingcheng Li, Menghe Miao, Daohong Zhang
Summary: This study synthesized a ferulic acid-based hyperbranched epoxy resin (FEHBP) to produce closed-loop recyclable and catalyst-free epoxy vitrimers with improved mechanical performance. The incorporation of FEHBP enhanced the tensile strength and toughness of the epoxy vitrimers through an in situ reinforcing and toughening mechanism. The hydroxyls of FEHBP catalyzed the dynamic transesterification and accelerated the reprocessing of epoxy vitrimers.
Article
Construction & Building Technology
Peijun Xu, Xiaoming Du, Peiliang Cong, Zhenjun Zhou
Summary: In this study, the modification of hydroxyl-terminated hyperbranched polyester (HBP) to epoxy-terminated HBP successfully improved the toughness of epoxy asphalt at low temperature. Epoxy-terminated HBP exhibited good compatibility with epoxy resin and could still enhance the toughness of epoxy asphalt through its hyperbranched structure.
ROAD MATERIALS AND PAVEMENT DESIGN
(2022)
Article
Engineering, Environmental
Nuo Liang, Xin Liu, Jiarui Hu, Yu Wu, Mengjie Peng, Yunke Ma, Yu Jiang, Juan Cheng, Sufang Chen, Daohong Zhang
Summary: Sustainability and high-performance of lightweight epoxy resin/carbon fiber composites are challenges in aerospace and wind power applications. The key is designing epoxy resins from non-petroleum-based materials, recycling carbon fibers, and improving interfacial interaction. This study presents the synthesis of bio-based degradable hyperbranched epoxy resins and investigates their topological properties and their effects on the mechanical and interfacial performance of the composites, leading to the discovery of interfacial improvement and carbon fiber recycling mechanisms. This work offers a promising approach for sustainable high-performance epoxy resin/carbon fiber composites.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Polymer Science
Wanan Cai, Zhicheng Wang, Zhaohui Shu, Wenbin Liu, Jun Wang, Jian Qiu
Summary: In this study, a new sustainable hyperbranched benzoxazine (HB-Ra) was successfully designed and synthesized via the A(2) + B-3 method, exhibiting excellent thermal stability and low coefficient of thermal expansion. Poly(HB-Ra) can be used as a potential nonignitable material and may meet the needs of high-frequency microelectronic devices.
Article
Engineering, Multidisciplinary
Zou Yang, Jin Xin, Zhang XiaoPing, Kong XiaoLing, Zhang Qian, Xie XianHua, Liu ChangJun, Ke LinNan, Liu WenGuang, Wang Wei
Summary: In this study, a hybrid biomedical patch containing curcumin and Ti3C2Tx MXenes was developed, demonstrating various functions such as shape-morphing, multi-substrate adhesion, self-healing, and photothermal effects, along with excellent antibacterial and cytocompatibility properties.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2021)
Article
Chemistry, Applied
Chenglong Yu, Zejun Xu, Xu Ma, Junheng Zhang, Sufang Chen, Menghe Miao, Hongxiang Chen, Daohong Zhang
Summary: EHPI-n polymers can significantly improve the performance of composite materials, including toughness, mechanical properties, heat resistance, and cold resistance, with great potential for various applications.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Materials Science, Multidisciplinary
Mengting Xiao, Haopeng Cai
Summary: By modifying bisphenol F epoxy resin with ODOPB and APTMS-HPSi, the toughness and liquid oxygen compatibility of the epoxy resin can be effectively improved. The addition of APTMS-HPSi also increases the char yield and limited oxygen index of the cured resin.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Polymer Science
Guofeng Ye, Siqi Huo, Cheng Wang, Pingan Song, Zhengping Fang, Hao Wang, Zhitian Liu
Summary: In this study, a novel hyperbranched, P-P synergetic, bio-based flame retardant (DIT) was synthesized, which could enhance the fire safety, mechanical properties, thermal resistance and transparency of epoxy resins. The addition of 2 wt% DIT enabled the EP/2DIT sample to achieve a UL-94 V-0 rating and a limiting oxygen index (LOI) of 36.6%. DIT demonstrated durable flame retardancy and improved the elongation at break, tensile strength, flexural strength and impact strength of the EP/2DIT sample. The high efficiency of DIT as a flame retardant was attributed to the synergism between DOPO and THPO.
POLYMER DEGRADATION AND STABILITY
(2023)
Article
Chemistry, Applied
Ruijun Lin, Xingshan Yin, Huameng Liu, Lijing Chen, Jianxin Wu, Liang Liu, Yuxin Gu, Yong Li, Xiaofeng Lin, Wenjing Lin, Guobin Yi
Summary: Self-matting acrylate has excellent weather resistance, hardness, water resistance, and chemical resistance, but its poor mechanical properties limit its application in coatings. To overcome this problem, a series of self-matting acrylate emulsions modified by xylitol-based hyperbranched urethane acrylate were successfully synthesized. The incorporation of the modified emulsion significantly improved the mechanical properties of the films, and the S-2-1.5 sample showed excellent comprehensive performance with great potential in the field of low-gloss coatings.
JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH
(2023)
Article
Chemistry, Physical
Xue Liang, Xiaojie Li, Yong Tang, Xiyu Zhang, Wei Wei, Xiaoya Liu
Summary: In this study, graphene oxide (GO) sheets were covalently linked with hyperbranched epoxy resin to enhance the properties of epoxy composites. The functionalized GO sheets showed better dispersion and interfacial compatibility, leading to significant improvements in mechanical and thermal properties. The results suggest that the functionalized composite is a promising, all-purpose modifier for epoxy resins.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Green & Sustainable Science & Technology
Qing Lu, Chunfu Xin, Mohammed Alamri, Mohammad Alharthai
Summary: This study improved the durability and strength of porous asphalt mixture by formulating a bio-based epoxy asphalt binder (BEAB) and optimizing its mixture design. Testing showed that the formulated BEAB can enhance the raveling resistance and stability of porous asphalt mixture without affecting its permeability.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Polymer Science
Gustavo Henrique de Almeida Barbalho, Jose Jefferson da Silva Nascimento, Lucineide Balbino da Silva, Ricardo Soares Gomez, Daniel Oliveira de Farias, Diego David Silva Diniz, Rosilda Sousa Santos, Maria Jose de Figueiredo, Antonio Gilson Barbosa de Lima
Summary: By adding Curaua fiber treated with 5% sodium hydroxide to high-density biopolyethylene, using polyethylene grafted with maleic anhydride as a compatibilizer, the crystallinity is reduced, fracture toughness is improved, and specific properties such as modulus and maximum bending stress are enhanced. These findings are important for achieving more sustainable and environmentally friendly manufacturing of automotive products without compromising processability.
Article
Polymer Science
Yifan Chen, Lei Ding, Chao Cui, Li Liu, Yudong Huang
Summary: The bio-based epoxy resin PA-EP with high epoxy value, synthesized using protocatechuic acid, showed potential as a sizing agent to improve the interface performance of carbon fibers, enhancing the interfacial strength of composites. The introduction of PA-EP as a sizing agent, replacing part of DGEBA, proved effective in enhancing the surface energy and epoxy groups on carbon fibers, leading to significant improvements in the composite properties.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Materials Science, Composites
T. G. Yashas Gowda, P. Madhu, Vinod Kushvaha, Sanjay Mavinkere Rangappa, Suchart Siengchin
Summary: This study developed hybrid areca/carbon/basalt reinforced epoxy/bio epoxy composites and investigated their mechanical, thermal, and water absorption behavior. The carbon-areca fiber reinforced composites showed the best mechanical properties and exhibited better bonding between areca, carbon, and basalt fabrics.
POLYMER COMPOSITES
(2022)
