Effect of stereocomplex crystal and flexible segments on the crystallization and tensile behavior of poly(L-lactide)
文献类型：期刊论文
| 作者 | Li, Xiaolu1; Zhang, Xiuqin1; Liu, Guoming2; Yang, Zhongkai1; Yang, Bo1; Qi, Yue1; Wang, Rui1; Wang, De-Yi3 |
| 刊名 | RSC ADVANCES
 |
| 出版日期 | 2018 |
| 卷号 | 8期号:50页码:28453-28460 |
| ISSN号 | 2046-2069 |
| DOI | 10.1039/c8ra05355c |
| 英文摘要 | The effects of poly(ethylene glycol) (PEG) and/or poly(L-lactide) (PDLA) blocks on the crystallization and mechanical properties of poly(L-lactide) (PLLA) were investigated systematically via differential scanning calorimetry (DSC), polarized optical microscopy (POM), wide-angle X-ray diffraction (WAXD) and tensile testing. The structural evolution during uniaxial stretching of the obtained blends above the glass transition temperature was studied by in situ WAXD. It was observed that the stereocomplex (SC) crystals promoted the nucleation of PLLA homocrystals (alpha/alpha' crystal), and flexible PEG blocks could enhance the spherulitic growth rate. The PLLA/PDLA-PEG-PDLA had a higher elongation at break than that of PLLA/PDLA without significant loss in tensile strength and stiffness. In situ WAXD showed that the PLLA/PDLA-PEG-PDLA crystallized faster during stretching. It was shown that the incorporation of SC crystals and flexible PEG blocks could not only accelerate the crystallization but also improve the toughness of PLLA. |
| 语种 | 英语 |
| WOS记录号 | WOS:000442616800020 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/41947]  |
| 专题 | 化学研究所_工程塑料实验室 |
| 通讯作者 | Li, Xiaolu; Wang, Rui |
| 作者单位 | 1.Beijing Inst Fash Technol, Sch Mat Sci & Engn, Beijing Engn Res Ctr Text Nanofiber, Beijing Key Lab Clothing Mat R&D & Assessment, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Chem, CAS Res Educ Ctr Excellence Mol Sci, CAS Key Lab Engn Plast, Beijing 100190, Peoples R China 3.IMDEA Mat Inst, Madrid 28906, Spain |
| 推荐引用方式 GB/T 7714 | Li, Xiaolu,Zhang, Xiuqin,Liu, Guoming,et al. Effect of stereocomplex crystal and flexible segments on the crystallization and tensile behavior of poly(L-lactide)[J]. RSC ADVANCES,2018,8(50):28453-28460. |
| APA | Li, Xiaolu.,Zhang, Xiuqin.,Liu, Guoming.,Yang, Zhongkai.,Yang, Bo.,...&Wang, De-Yi.(2018).Effect of stereocomplex crystal and flexible segments on the crystallization and tensile behavior of poly(L-lactide).RSC ADVANCES,8(50),28453-28460. |
| MLA | Li, Xiaolu,et al."Effect of stereocomplex crystal and flexible segments on the crystallization and tensile behavior of poly(L-lactide)".RSC ADVANCES 8.50(2018):28453-28460. |
入库方式： OAI收割
来源：化学研究所
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