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Direct investigations of deformation and yield induced structure transitions in polyamide 6 below glass transition temperature with WAXS and SAXS
Guo, HL; Wang, JY; Zhou, CB; Zhang, WY; Wang, ZX; Xu, BH; Li, JQ; Shang, YR; Christiansen, JD; Yu, DH; Wu, ZH; Jiang, SC; Wang JY(王佳怡); Wu ZH(吴忠华)
2015
发表期刊POLYMER
卷号70页码:109-117
摘要Deformation and yield induced structure transitions of polyamide 6 (PA6) were detected with the combination of the wide- and small-angle X-ray scattering (WAXS and SAXS) at 30 degrees C below glass transition temperature (T-g) of PA6. During deformation, gamma-alpha phase transition was found at elastic stage. The concentrated stress in crystals at elastic stage provided adequate energy for the direct gamma-alpha phase transition under T-g. The force to promote the gamma-phase into a phase directly is insufficient at the yield stage and a transient phase as a compromise was formed. The transient phase was confirmed by DSC measurements and assisted the gamma-alpha phase transition indirectly. The gamma-phase slips into incomplete fragments at yield point, and the parts along tensile direction are responsible for the formation of transient phase. The gamma-fragments after yield is oriented by shear force following alpha-phase. The yield of PA6 was intimately related with the gamma-transient phase transition and the slippage of gamma-fragments. In addition, the increase of long spacing at elastic deformation along tensile direction was mainly contributed by the amorphous region. After yield, the phase transition and crystalline slippage affected the lamellar evolution. A simplified schematic diagram was provided to illustrate the structure evolution of PA6. (C) 2015 Elsevier Ltd. All rights reserved.
文章类型Article
关键词Deformation of PA6 Structure transition below T-g WAXS and SAXS
学科领域Polymer Science
DOI10.1016/j.polymer.2015.06.013
收录类别SCI ; EI
WOS类目Polymer Science
WOS记录号WOS:000358005000014
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228578
专题多学科研究中心
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Guo, HL,Wang, JY,Zhou, CB,et al. Direct investigations of deformation and yield induced structure transitions in polyamide 6 below glass transition temperature with WAXS and SAXS[J]. POLYMER,2015,70:109-117.
APA Guo, HL.,Wang, JY.,Zhou, CB.,Zhang, WY.,Wang, ZX.,...&吴忠华.(2015).Direct investigations of deformation and yield induced structure transitions in polyamide 6 below glass transition temperature with WAXS and SAXS.POLYMER,70,109-117.
MLA Guo, HL,et al."Direct investigations of deformation and yield induced structure transitions in polyamide 6 below glass transition temperature with WAXS and SAXS".POLYMER 70(2015):109-117.
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