Soybean oil-based thermosets with N-vinyl-2-pyrrolidone as crosslinking agent for hemp fiber composites |
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| Affiliation: | 1. College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China;2. College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China;1. College of Pharmacy, Drug Research and Development Center, Catholic University of Daegu, Gyeongsan 38430, Republic of Korea;2. Phutho College of Pharmacy, Viettri City, Phutho Province 290000, Viet Nam;3. Department of Food Science & Nutrition, Pukyong National University, Busan 48513, Republic of Korea;1. Centre for Advanced Materials Technology (CAMT), School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, NSW 2006, Australia;2. Key Laboratory of Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat Sen University, Guangzhou 510275, PR China;1. School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China;2. College of Materials Science and Technology, South China University of Technology, Guangzhou 510640, China;3. Guangzhou LESCO-KINGFA WPC Technology Co., Ltd., Guangzhou 510520, China;4. Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangdong University of Technology, Guangzhou 510006, China |
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| Abstract: | Soybean oil-based thermosets from acrylated epoxidized soybean oil (AESO) with a highly reactive vinyl monomer, N-vinyl-2-pyrrolidone (NVP), as crosslinking agent to replace styrene (St) were formulated for the fabrication of hemp fiber composites. The theoretical miscibility of NVP–AESO and St–AESO systems were discussed based on the group contribution method. The AESO resin with 30 wt% NVP exhibited a slightly higher viscosity than the counterpart with St, while the maximum curing temperature of the former was considerably lower than that of the latter. The composites from 20 wt% NVP resin gained comparable mechanical properties and higher glass transition temperature (Tg) to the composites with 30 wt% St. Further increase in NVP usage to 40 wt% resulted in the composites with higher tensile strength, tensile modulus, flexural strength, flexural modulus, storage modulus, and Tg of 29.6%, 22.4%, 22.5%, 20.6%, 21.6%, and 47.2%, respectively, when compared to those of the St-based composites. |
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| Keywords: | A Thermosetting resin A Polymer-matrix composites (PMCs) B Rheological properties B Thermomechanical |
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