Crystallization Temperature Dependence of Cavitation and Plastic Flow in the Tensile Deformation of Poly(epsilon-caprolactone)
文献类型：期刊论文
| 作者 | Men, YF; Wu, ZH ; Coates, P; Whiteside, B; Lu, Y; Chen, R; Jiang, ZY; Wu ZH(吴忠华)
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| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY B
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| 出版日期 | 2017 |
| 卷号 | 121期号:27页码:6673-6684 |
| ISSN号 | 1520-6106 |
| DOI | 10.1021/acs.jpcb.7b02595 |
| 文献子类 | Article |
| 英文摘要 | In situ small-, ultrasmall-, and wide-angle X-ray scattering measurements were performed to investigate the structural evolution of crystalline lamellae and cavities as a function of deformation ratio during tensile deformation of isothermally crystallized poly(epsilon-caprolactone). The cavities were modeled as cylinder-shaped objects which are oriented along the stretching direction and randomly distributed in the samples, and their dimensions were evaluated by direct model fitting of scattering patterns. At small deformations, the orientation of these cavities at the onset of cavity formation was related to the isothermal crystallization temperature. Upon further stretching; the cavities were found to cluster in the interfibrillar regions at moderate strains where the long spacing of the newly developed lamellae along the stretching direction remained essentially constant. At large orientations, the cooperative deformational behavior mediated via slippage of fibrils was evidenced, the extent of which depended on the cavity number, which could be traced back to the significantly different coupling forces imposed by chains connecting adjacent fibrils. Furthermore, wide-angle X-ray scattering results revealed that a fraction of the polymer chains with their orientation perpendicular to the stretching direction were still preserved even at large macroscopic strains. |
| WOS关键词 | X-RAY-SCATTERING ; HIGH-DENSITY POLYETHYLENE ; SEMICRYSTALLINE POLYMERS ; ISOTACTIC POLYPROPYLENE ; LINEAR POLYETHYLENE ; STRUCTURAL EVOLUTION ; CHAIN ENTANGLEMENTS ; MECHANISMS ; TIME ; IDENTIFICATION |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000405764000025 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/285236]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Men, YF,Wu, ZH,Coates, P,et al. Crystallization Temperature Dependence of Cavitation and Plastic Flow in the Tensile Deformation of Poly(epsilon-caprolactone)[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2017,121(27):6673-6684. |
| APA | Men, YF.,Wu, ZH.,Coates, P.,Whiteside, B.,Lu, Y.,...&吴忠华.(2017).Crystallization Temperature Dependence of Cavitation and Plastic Flow in the Tensile Deformation of Poly(epsilon-caprolactone).JOURNAL OF PHYSICAL CHEMISTRY B,121(27),6673-6684. |
| MLA | Men, YF,et al."Crystallization Temperature Dependence of Cavitation and Plastic Flow in the Tensile Deformation of Poly(epsilon-caprolactone)".JOURNAL OF PHYSICAL CHEMISTRY B 121.27(2017):6673-6684. |
入库方式： OAI收割
来源：高能物理研究所
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