Isothermal crystallization behavior of the poly(L-lactide) block in poly(L-lactide)-poly(ethylene glycol) diblock copolymers: Influence of the PEG block as a diluted solvent
文献类型：期刊论文
| 作者 | Yang, Junliang; Zhao, Ting; Liu, Leijing; Zhou, Yunchun; Li, Gao; Zhou, Enle; Chen, Xuesi |
| 刊名 | POLYMER JOURNAL
 |
| 出版日期 | 2006 |
| 卷号 | 38期号:12页码:1251-1257 |
| 关键词 | Isothermal Crystallization Diluted Solvent Plla Block Peg Block Ring-banded Spherulites |
| ISSN号 | 0032-3896 |
| DOI | 10.1295/polymj.PJ2006094 |
| 英文摘要 | Isothermal crystallization kinetics and morphology of the poly(L-lactide) block in poly(L-lactide)poly(ethylene glycol) diblock copolymers were studied by differential scanning calorimetry (DSC) and polarized optical microscopy (POM), respectively. The results were compared with that of the PLLA homopolymer. The introduction of the PEG block accelerated the crystallization rate of the PLLA block and promoted to form ring-banded spherulites. The analysis of isothermal crystallization kinetics has shown that the PLLA homopolymer accorded with the Avrami equation. But the PLLA block of the diblock copolymers deviated from the Avrami equation, which resulted from increasing of the crystallization rate and occurring of the second crystallization process. The equilibrium melting temperature (T,,) of the PLLA block fell with its molecular weight decreasing. The conditions to obtain more regular ring-banded spherulites were below: the sample was the PLLA block of LA(5) EG(5); the crystallization temperature was about from 95 degrees C to 100 degrees C, which almost corresponded to regime II. |
| 语种 | 英语 |
| WOS记录号 | WOS:000243096800006 |
| 出版者 | SOC POLYMER SCIENCE JAPAN |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/59567]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Li, Gao |
| 作者单位 | Chinese Acad Sci, Changchun Inst Appl Chem, Grad Sch, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Junliang,Zhao, Ting,Liu, Leijing,et al. Isothermal crystallization behavior of the poly(L-lactide) block in poly(L-lactide)-poly(ethylene glycol) diblock copolymers: Influence of the PEG block as a diluted solvent[J]. POLYMER JOURNAL,2006,38(12):1251-1257. |
| APA | Yang, Junliang.,Zhao, Ting.,Liu, Leijing.,Zhou, Yunchun.,Li, Gao.,...&Chen, Xuesi.(2006).Isothermal crystallization behavior of the poly(L-lactide) block in poly(L-lactide)-poly(ethylene glycol) diblock copolymers: Influence of the PEG block as a diluted solvent.POLYMER JOURNAL,38(12),1251-1257. |
| MLA | Yang, Junliang,et al."Isothermal crystallization behavior of the poly(L-lactide) block in poly(L-lactide)-poly(ethylene glycol) diblock copolymers: Influence of the PEG block as a diluted solvent".POLYMER JOURNAL 38.12(2006):1251-1257. |
入库方式： OAI收割
来源：化学研究所
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