Real time synchrotron SAXS and WAXS investigations on temperature related deformation and transitions of beta-iPP with uniaxial stretching
文献类型：期刊论文
| 作者 | Cai, ZW; Zhang, Y; Li, JQ; Xue, FF; Shang, YR; He, XH; Feng, JC; Wu, ZH; Jiang, SC; Wu ZH(吴忠华)
|
| 刊名 | POLYMER
 |
| 出版日期 | 2012 |
| 卷号 | 53期号:7页码:1593-1601 |
| 关键词 | beta PP deformation Real time X-ray scattering Auxetical behavior |
| 英文摘要 | In-situ synchrotron small-angle X-ray scattering (SAXS) and wide-angle X-ray scattering (WAXS) were carried out to investigate the uniaxial drawing-induced deformation and structure transitions of beta form isotactic polypropylene (iPP) at varying temperatures (30 degrees C, 60 degrees C, 80 degrees C, 100 degrees C and 120 degrees C). The WAXS results indicated that the initial strain for the strain-induced beta-alpha transformation decreases with the tensile temperature according to the engineering stress-strain curves. The SAXS data showed that the long period increased along the direction perpendicular to the tensile force and changed little along the tensile direction with increasing strain in the elastic deformation stage before the yield point. The analysis of the obtained scattering results indicated that the angle between parent and daughter lamella rotates from initial 40 degrees or 140 degrees to close to 90 degrees accounts for the lateral expansion of the samples with tension, which matches the essential auxetical behavior. A structure deformation and transition mechanism was proposed for beta form iPP with uniaxial drawing. The initialization of the crystalline structure transition is after the yield point, then the mechanical loading-induced beta-alpha transition seems to be a gradual process with lamella slippage and breaking which triggers the beta-alpha polymorphic transition. (C) 2012 Elsevier Ltd. All rights reserved. |
| 学科主题 | Polymer Science |
| 收录类别 | SCI |
| WOS记录号 | WOS:000301911800018 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/224155]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 GB/T 7714 | Cai, ZW,Zhang, Y,Li, JQ,et al. Real time synchrotron SAXS and WAXS investigations on temperature related deformation and transitions of beta-iPP with uniaxial stretching[J]. POLYMER,2012,53(7):1593-1601. |
| APA | Cai, ZW.,Zhang, Y.,Li, JQ.,Xue, FF.,Shang, YR.,...&吴忠华.(2012).Real time synchrotron SAXS and WAXS investigations on temperature related deformation and transitions of beta-iPP with uniaxial stretching.POLYMER,53(7),1593-1601. |
| MLA | Cai, ZW,et al."Real time synchrotron SAXS and WAXS investigations on temperature related deformation and transitions of beta-iPP with uniaxial stretching".POLYMER 53.7(2012):1593-1601. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。