Environmentally benign green composites based on epoxy resin/bacterial cellulose reinforced glass fiber: Fabrication and mechanical characteristics |
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| Affiliation: | 1. Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Viet Nam;2. Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Viet Nam;3. Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam;4. Department of Environmental Energy & Engineering, Kyonggi University, Suwon 442-760, South Korea;5. Faculty of Chemistry, Hanoi University of Science, Vietnam National University, Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi 10000 Viet Nam;6. Vietnam Academy of Science and Technology, Ha Noi, Viet Nam;7. Department of Polymer Science and Engineering, Inha University, Incheon 22212, South Korea;1. Fiber and Polymer Science Program, Department of Textile Engineering, Chemistry, and Science, College of Textiles, North Carolina State University, Raleigh, NC 27695, USA;2. Statistics Ph.D. Program, Department of Statistics, College of Sciences, Raleigh, NC 27695, USA;3. Textile Chemistry Program, Department of Textile Engineering, Chemistry and Science, College of Textiles, North Carolina State University, Raleigh, NC 27606, USA;1. Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, Shanghai 200240, China;2. The State Key Lab of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China;3. Department of Materials Science and Engineering, Delft University of Technology, 2628 CD Delft, The Netherlands;4. Department of Metallurgical Engineering, Anhui University of Technology, Ma''anshan 243002, China;5. Institute of Ferrous Metallurgy, Northeastern University, Shenyang 110819, China;1. R&D Department, Dainese S.p.A., 36060 Molvena, Italy;2. Department of Industrial Engineering, University of Padova, 35131 Padova, Italy |
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| Abstract: | ![]()
Bio-based bacterial cellulose (BC) epoxy composites were manufactured and their mechanical properties were examined. The BC was initially fabricated from Vietnamese nata de coco by means of alkaline pretreatment followed by solvent exchange. The obtained fibers were dispersed in epoxy resin (EP) by both mechanical stirring and ultrasonic techniques. The resulting blend was used as the matrix for glass-fiber (GF) composite fabrication using a prepreg method followed by multiple hot-press-curing steps. The morphology, mechanical characteristics and mode-I interlaminar fracture toughness of the fabricated composites were investigated. With a 0.3-wt% BC content, the mode-I interlaminar fracture toughness for both crack initiation and crack propagation were improved by 128.8% and 1110%, respectively. The fatigue life was dramatically extended by a factor of 12, relative to the unmodified composite. Scanning electron microscopy images revealed that the BC plays a vital role in increasing the interlaminar fracture toughness of a GF/EP composite via the mechanisms of crack reflection, debonding and fiber-bridging. |
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| Keywords: | Epoxy resin Bacterial cellulose Bio-based composite Nata de coco Mode-I interlaminar fracture toughness Fatigue life |
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