Orientation of Poly(epsilon-caprolactone) in Its Poly(vinyl chloride) Blends Crystallized under Strain: The Role of Strain Rate
文献类型：期刊论文
| 作者 | BSRF用户 |
| 刊名 | MATERIALS
 |
| 出版日期 | 2021 |
| 卷号 | 13期号:24页码:5655 |
| DOI | 10.3390/ma13245655 |
| 文献子类 | Article |
| 英文摘要 | The blends of high and low molecular weights poly(epsilon-caprolactone) (PCL) with poly(vinyl chloride (PVC) were prepared. The samples before and after the crystallization of PCL were uniaxially stretched to different draw ratios. The orientation features of PCL in a stretched crystalline PCL/PVC blend and crystallized from the amorphous PCL/PVC blends under varied strains were studied by wide-angle X-ray diffraction (WAXD). It was found that a uniaxial stretching of crystalline PCL/PVC blend with high molecular weight PCL results in the c-axis orientation along the stretching direction, as is usually done for the PCL bulk sample. For the stretched amorphous PCL/PVC blend samples, the crystallization of high molecular weight PCL in the blends under a draw ratio of lambda = 3 with a strain rate of 6 mm/min leads to a ring-fiber orientation. In the samples with draw ratios of lambda = 4 and 5, the uniaxial orientation of a-, b-, and c-axes along the strain direction coexist after crystallization of high molecular weight PCL. With a draw ratio of lambda = 6, mainly the b-axis orientation of high molecular weight PCL is identified. For the low molecular weight PCL, on the contrary, the ring-fiber and a-axis orientations coexist under a draw ratio of lambda = 3. The a-axis orientation decreases with the increase of draw ratio. When the lambda reaches 5, only a poorly oriented ring-fiber pattern has been recognized. These results are different from the similar samples stretched at a higher strain rate as reported in the literatures and demonstrate the important role of strain rate on the crystallization behavior of PCL in its blend with PVC under strain. |
| 电子版国际标准刊号 | 1996-1944 |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000603503000001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/292809]  |
| 专题 | 北京同步辐射装置 |
| 推荐引用方式 GB/T 7714 | BSRF用户. Orientation of Poly(epsilon-caprolactone) in Its Poly(vinyl chloride) Blends Crystallized under Strain: The Role of Strain Rate[J]. MATERIALS,2021,13(24):5655. |
| APA | BSRF用户.(2021).Orientation of Poly(epsilon-caprolactone) in Its Poly(vinyl chloride) Blends Crystallized under Strain: The Role of Strain Rate.MATERIALS,13(24),5655. |
| MLA | BSRF用户."Orientation of Poly(epsilon-caprolactone) in Its Poly(vinyl chloride) Blends Crystallized under Strain: The Role of Strain Rate".MATERIALS 13.24(2021):5655. |
入库方式： OAI收割
来源：高能物理研究所
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