Recyclable bio-based crosslinked polyurethanes with self-healing ability
文献类型：期刊论文
| 作者 | Wu, Qing-Yun; Gu, Lin |
| 刊名 | JOURNAL OF APPLIED POLYMER SCIENCE
 |
| 出版日期 | 2018 |
| 卷号 | 135期号:21 |
| 关键词 | Diels-alder Reaction Shape-memory Behavior Poly(Lactic Acid) Body-temperature Chain Extenders Epoxy Monomer Polymers Elastomers Polyols Resistance |
| 英文摘要 | We report the synthesis of a linear bio-based polyurethane (bio-PU) containing furan ring by using renewable polylactide copolymer diol and 2,5-furandimethanol as a soft segment and chain extender, respectively, in which the reversible crosslinked covalent bonds between hard segments were incorporated via Diels-Alder (D-A) reaction between the furan ring of the chain extender and bismaleimide (BM) crosslinker. By simply controlling the amount of BM, mechanical properties of the obtained crosslinked bio-PUs (CBPUs) were varied widely. In particular, the CBPU100 sample shows the highest tensile strength of 10.8 MPa, Young's modulus of 193 MPa, and an elongation of 155%. The differential scanning calorimetry experiments verify the recycle property of the CBPUs by the D-A/retro-D-A reaction at the proper temperature. The thermal recyclability and remolding ability of these materials are demonstrated by two kinds of polymer processing methods, i.e., solution casting and hot-compression molding. The recycled CBPUs display almost identical elongation and slightly decreased tensile strength compared to the as-synthesized samples. Furthermore, the CBPUs also exhibit excellent self-healing ability. Therefore, the resulting CBPUs possess tunable mechanical properties, good thermal recyclability, re-mending, and self-healing ability, which makes the bio-based materials more eco-friendly. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46272. |
| 学科主题 | Materials Science ; Physics ; Polymer Science |
| 语种 | 英语 |
| 公开日期 | 2018-12-04 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/17423]  |
| 专题 | 2018专题 |
| 推荐引用方式 GB/T 7714 | Wu, Qing-Yun,Gu, Lin. Recyclable bio-based crosslinked polyurethanes with self-healing ability[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2018,135(21). |
| APA | Wu, Qing-Yun,&Gu, Lin.(2018).Recyclable bio-based crosslinked polyurethanes with self-healing ability.JOURNAL OF APPLIED POLYMER SCIENCE,135(21). |
| MLA | Wu, Qing-Yun,et al."Recyclable bio-based crosslinked polyurethanes with self-healing ability".JOURNAL OF APPLIED POLYMER SCIENCE 135.21(2018). |
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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