Phase morphology, crystallization behavior and mechanical properties of poly(L-lactide) toughened with biodegradable polyurethane: Effect of composition and hard segment ratio
文献类型：期刊论文
| 作者 | Xing, Qian1,2; Li, Rong-bo3; Dong, Xia2; Zhang, Xiu-qin2; Zhang, Liao-yun1; Wang, Du-jin2 |
| 刊名 | CHINESE JOURNAL OF POLYMER SCIENCE
 |
| 出版日期 | 2015-09-01 |
| 卷号 | 33期号:9页码:1294-1304 |
| 关键词 | Poly(L-lactide) Polyurethane Phase morphology Impact modification Hard segment ratio |
| 英文摘要 | Polyester-based biodegradable polyurethane (PU) with different hard segment ratios was selected to modify the impact toughness of poly(L-lactide) (PLLA). The influence of blending composition and hard segment ratio of PU on the phase morphology, crystallization behavior and mechanical properties of PLLA/PU blends has been investigated systematically. The results showed that the PU particles were uniformly dispersed in PLLA matrix at a scale from submicrons to several microns. The glass transition temperature of PU within these blends decreased compared to that of neat PU, but rose slightly with its content and hard segment ratio. The presence of PU retarded the crystallization ability of PLLA, whereas enhanced its elongation at break and impact resistance effectively. As the PU content reaches up to 30 wt%, the phenomenon of brittle-ductile transition occurred, resulting in a rougher fracture surface with the formation of fibril-like structure. Moreover, under the same concentrations, the elongation at break and impact strength of PLLA blends decreased slightly with the increase of hard segment ratio of PU. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2015-10-27 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/27876]  |
| 专题 | 化学研究所_工程塑料实验室 |
| 作者单位 | 1.Univ Chinese Acad & Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China 2.Chinese Acad Sci, CAS Key Lab Engn Plast, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 3.Petrochina Petrochem Res Inst, Beijing 100195, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xing, Qian,Li, Rong-bo,Dong, Xia,et al. Phase morphology, crystallization behavior and mechanical properties of poly(L-lactide) toughened with biodegradable polyurethane: Effect of composition and hard segment ratio[J]. CHINESE JOURNAL OF POLYMER SCIENCE,2015,33(9):1294-1304. |
| APA | Xing, Qian,Li, Rong-bo,Dong, Xia,Zhang, Xiu-qin,Zhang, Liao-yun,&Wang, Du-jin.(2015).Phase morphology, crystallization behavior and mechanical properties of poly(L-lactide) toughened with biodegradable polyurethane: Effect of composition and hard segment ratio.CHINESE JOURNAL OF POLYMER SCIENCE,33(9),1294-1304. |
| MLA | Xing, Qian,et al."Phase morphology, crystallization behavior and mechanical properties of poly(L-lactide) toughened with biodegradable polyurethane: Effect of composition and hard segment ratio".CHINESE JOURNAL OF POLYMER SCIENCE 33.9(2015):1294-1304. |
入库方式： OAI收割
来源：化学研究所
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