Formation of a unique crystal morphology for the poly(ethylene glycol)-poly(epsilon-caprolactone) diblock copolymer
文献类型：期刊论文
| 作者 | He CL ; Sun JR ; Zhao T ; Hong ZK ; Zhang XL ; Chen XS ; Jing XB |
| 刊名 | biomacromolecules
 |
| 出版日期 | 2006 |
| 卷号 | 7期号:1页码:252-258 |
| 关键词 | RING-OPENING POLYMERIZATION GLYCOL) BLOCK-COPOLYMERS X-RAY-SCATTERING NONISOTHERMAL CRYSTALLIZATION ISOTHERMAL CRYSTALLIZATION SPHERULITE MORPHOLOGY ENZYMATIC DEGRADATION MELTING BEHAVIOR LACTIDE OXIDE) |
| ISSN号 | 1525-7797 |
| 通讯作者 | chen xs |
| 中文摘要 | the crystallization behaviors of the poly(ethylene glycol)-poly(epsilon-caprolactone) diblock copolymer with the peg weight fraction of 0.50 (peg(50)-pcl50) was studied by dsc, waxd, saxs, and ftir. a superposed melting point at 58.5 degrees c and a superposed crystallization temperature at 35.4 degrees c were obtained from the dsc profiles running at 10 degrees c/min, whereas the temperature-dependent ftir measurements during cooling from the melt at 0.2 degrees c/min showed that the pcl crystals formed starting at 48 degrees c while the peg crystals started at 45 degrees c. the peg and pcl blocks of the copolymer crystallized separately and formed alternating lamella regions according to the waxd and saxs results. the crystal growth of the diblock copolymer was observed by polarized optical microscope (pom). an interesting morphology of the concentric spherulites developed through a unique crystallization behavior. the concentric spherulites were analyzed by in situ microbeam ftir, and it was determined that the morphologies of the inner and outer portions were mainly determined by the pcl and peg spherulites, respectively. however, the compositions of the inner and outer portions were equal in the analysis by microbeam ftir. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000234549100035 |
| 公开日期 | 2010-08-17 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/16063]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | He CL,Sun JR,Zhao T,et al. Formation of a unique crystal morphology for the poly(ethylene glycol)-poly(epsilon-caprolactone) diblock copolymer[J]. biomacromolecules,2006,7(1):252-258. |
| APA | He CL.,Sun JR.,Zhao T.,Hong ZK.,Zhang XL.,...&Jing XB.(2006).Formation of a unique crystal morphology for the poly(ethylene glycol)-poly(epsilon-caprolactone) diblock copolymer.biomacromolecules,7(1),252-258. |
| MLA | He CL,et al."Formation of a unique crystal morphology for the poly(ethylene glycol)-poly(epsilon-caprolactone) diblock copolymer".biomacromolecules 7.1(2006):252-258. |
入库方式： OAI收割
来源：长春应用化学研究所
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