Stretching temperature dependence of the critical strain in the tensile deformation of polyethylene copolymer
文献类型：期刊论文
| 作者 | Liao, Tao1; Jiang, Zhiyong1; Li, Rui2; Gao, Yuxin2; Men, Yongfeng1 |
| 刊名 | EUROPEAN POLYMER JOURNAL
 |
| 出版日期 | 2017-12-01 |
| 卷号 | 97页码:188-197 |
| 关键词 | Polyethylene Copolymer Small Angle X-ray Scattering Critical Strain Amorphous Entanglement Density |
| ISSN号 | 0014-3057 |
| DOI | 10.1016/j.eurpolymj.2017.10.015 |
| 英文摘要 | The deformation behavior and structural evolution of the quenched ethylene-butene copolymer under uniaxial loading and unloading were investigated as a function of stretching temperature using step-cycle tests, in situ small angle X-ray scattering (SAXS), and wide angle X-ray diffraction (WAXD) measurements. The true stress strain curves together with detailed analysis of SAXS results indicated that the irreversible plastic strain set in quite early at Small strains as the drawing temperature was increased. The critical strain, at which the recoverable elastic strain reached the plateau region and the long period started to keep essentially constant upon stretching, was found to increase distinctly from about 0.65 at room temperature to 1.00 at 100 degrees C. This dependence of critical strain on the stretching temperature was directly related to the effective entanglement density of the amorphous network as derived from the Gaussian model of Haward-Thackray. Despite the considerable changes of the long period and the crystallite dimensions at identical strains upon stretching and unloading, there existed a one-to-one correspondence between the strain and the orientational order parameter of polymeric chains in the crystalline phase, irrespective of mechanical stress state. This work yielded new insight into the relationship between mechanical stability and operation temperature in industrial application of crystalline polymers. |
| 语种 | 英语 |
| WOS记录号 | WOS:000419415800020 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/45427]  |
| 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, Univ Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Renmin St 5625, Changchun 130022, Jilin, Peoples R China 2.CNPC, Daqing Petrochem Res Ctr, Daqing 163312, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liao, Tao,Jiang, Zhiyong,Li, Rui,et al. Stretching temperature dependence of the critical strain in the tensile deformation of polyethylene copolymer[J]. EUROPEAN POLYMER JOURNAL,2017,97:188-197. |
| APA | Liao, Tao,Jiang, Zhiyong,Li, Rui,Gao, Yuxin,&Men, Yongfeng.(2017).Stretching temperature dependence of the critical strain in the tensile deformation of polyethylene copolymer.EUROPEAN POLYMER JOURNAL,97,188-197. |
| MLA | Liao, Tao,et al."Stretching temperature dependence of the critical strain in the tensile deformation of polyethylene copolymer".EUROPEAN POLYMER JOURNAL 97(2017):188-197. |
入库方式： OAI收割
来源：化学研究所
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