Toughening Polylactic Acid by a Biobased Poly(Butylene 2,5-Furandicarboxylate)-b-Poly(Ethylene Glycol) Copolymer: Balanced Mechanical Properties and Potential Biodegradability
文献类型：期刊论文
| 作者 | Chen, Chao; Tian, Ying; Li, Fenglong; Hu, Han; Wang, Kai; Kong, Zhengyang; Ying, Wu Bin; Zhang, Ruoyu; Zhu, Jin |
| 刊名 | BIOMACROMOLECULES
 |
| 出版日期 | 2021 |
| 卷号 | 22期号:2页码:374-385 |
| 英文摘要 | Polylactic acid (PLA) is a biodegradable thermoplastic polyester produced from natural resources. Because of its brittleness, many tougheners have been developed. However, traditional toughening methods cause either the loss of modulus and strength or the lack of degradability. In this work, we synthesized a biobased and potentially biodegradable poly(butylene 2,5-furandicarboxylate)-b-poly(ethylene glycol) (PBFEG50) copolymer to toughen PLA, with the purpose of both keeping mechanical strength and enhancing the toughness. The blend containing 5 wt % PBFEG50 exhibited about 28.5 times increase in elongation at break (5.5% vs 156.5%). At the same time, the tensile modulus even strikingly increased by 21.6% while the tensile strength was seldom deteriorated. Such a phenomenon could be explained by the stretch-induced crystallization of the BF segment and the interconnected morphology of PBFEG50 domains in PLAS. The Raman spectrum was used to identify the phase dispersion of PLA and PBFEG50 phases. As the PBFEG50 content increased, the interconnected PBFEGS0 domains start to separate, but their size increases. Interestingly, tensile-induced cavitation could be clearly identified in scanning electron microscopy images, which meant that the miscibility between PLA and PBFEG50 was limited. The crystallization of PLA/PBFEG50 blends was examined by differential scanning calorimetry, and the plasticizer effect of the EG segment on the PLA matrix could be confirmed. The rheological experiment revealed decreased viscosity of PLA/PBFEGS0 blends, implying the possible greener processing. Finally, potential biodegradability of these blends was proved. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/22222]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | Zhang, RY (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Biobased Polymer Mat Technol & Applicat Z, Ningbo 315201, Zhejiang, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Chen, Chao,Tian, Ying,Li, Fenglong,et al. Toughening Polylactic Acid by a Biobased Poly(Butylene 2,5-Furandicarboxylate)-b-Poly(Ethylene Glycol) Copolymer: Balanced Mechanical Properties and Potential Biodegradability[J]. BIOMACROMOLECULES,2021,22(2):374-385. |
| APA | Chen, Chao.,Tian, Ying.,Li, Fenglong.,Hu, Han.,Wang, Kai.,...&Zhu, Jin.(2021).Toughening Polylactic Acid by a Biobased Poly(Butylene 2,5-Furandicarboxylate)-b-Poly(Ethylene Glycol) Copolymer: Balanced Mechanical Properties and Potential Biodegradability.BIOMACROMOLECULES,22(2),374-385. |
| MLA | Chen, Chao,et al."Toughening Polylactic Acid by a Biobased Poly(Butylene 2,5-Furandicarboxylate)-b-Poly(Ethylene Glycol) Copolymer: Balanced Mechanical Properties and Potential Biodegradability".BIOMACROMOLECULES 22.2(2021):374-385. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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