Tensile Deformation of Oriented Poly(epsilon-caprolactone) and Its Miscible Blends with Poly(vinyl methyl ether)
文献类型：期刊论文
| 作者 | Jiang, Zhiyong1; Wang, Yaotao1; Fu, Lianlian1; Whiteside, Ben2; Wyborn, John2; Norris, Keith2; Wu, Zhonghua3; Coates, Phil2; Men, Yongfeng1 |
| 刊名 | MACROMOLECULES
 |
| 出版日期 | 2013-09-10 |
| 卷号 | 46期号:17页码:6981-6990 |
| ISSN号 | 0024-9297 |
| DOI | 10.1021/ma401052x |
| 英文摘要 | The structural evolution of micromolded poly(e-caprolactone) (PCL) and its miscible blends with noncrystallizable poly(vinyl methyl ether) (PVME) at the nanoscale was investigated as a function of deformation ratio and blend composition using in situ synchrotron small-angle X-ray scattering (SAXS) and scanning SAXS techniques. It was found that the deformation mechanism of the oriented samples shows a general scheme for the process of tensile deformation: crystal block slips within the lamellae occur at small deformations followed by a stress-induced fragmentation and recrystallization process along the drawing direction at a critical strain where the average thickness of the crystalline lamellae remains essentially constant during stretching. The value of the critical strain depends on the amount of the amorphous component incorporated in the blends, which could be traced back to the lower modulus of the entangled amorphous phase and, therefore, the reduced network stress acting on the crystallites upon addition of PVME. When stretching beyond the critical strain the slippage of the fibrils (stacks of newly formed lamellae) past each other takes place resulting in a relaxation of stretched interlamellar amorphous chains. Because of deformation-induced introduction of the amorphous PVME into the interfibrillar regions in the highly oriented blends, the interactions between fibrils becomes stronger upon further deformation and thus impeding sliding of the fibrils to some extent leading finally to less contraction of the interlamellar amorphous layers compared to the pure PCL. |
| 语种 | 英语 |
| WOS记录号 | WOS:000330145900032 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/46339]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Jiang, Zhiyong |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Univ Bradford, Sch Engn, Bradford BD7 1DP, W Yorkshire, England 3.Chinese Acad Sci, Inst High Energy Phys, BSRF, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, Zhiyong,Wang, Yaotao,Fu, Lianlian,et al. Tensile Deformation of Oriented Poly(epsilon-caprolactone) and Its Miscible Blends with Poly(vinyl methyl ether)[J]. MACROMOLECULES,2013,46(17):6981-6990. |
| APA | Jiang, Zhiyong.,Wang, Yaotao.,Fu, Lianlian.,Whiteside, Ben.,Wyborn, John.,...&Men, Yongfeng.(2013).Tensile Deformation of Oriented Poly(epsilon-caprolactone) and Its Miscible Blends with Poly(vinyl methyl ether).MACROMOLECULES,46(17),6981-6990. |
| MLA | Jiang, Zhiyong,et al."Tensile Deformation of Oriented Poly(epsilon-caprolactone) and Its Miscible Blends with Poly(vinyl methyl ether)".MACROMOLECULES 46.17(2013):6981-6990. |
入库方式： OAI收割
来源：化学研究所
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