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Isothermal and non-isothermal shrinkage behaviors of highly oriented PET yarns

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Abstract

The isothermal and non-isothermal shrinkage behaviors of highly oriented Poly(ethylene terephthalate) yarns were investigated. In isothermal measurements, shrinkage and shrinkage stress firstly monotonously increased due to more and more activated frozen molecular segments with increasing time and temperature, and then relaxed at high temperature resulting from intermolecular slipping of micro-fibrils. According to the different contributions of amorphous and crystalline regions to shrinkage behavior, non-isothermal shrinkage and shrinkage stress curves were fitted by Gauss curves and the entire shrinkage process was divided into three stages: contraction of micro-fibrils, contraction of extended interfibrillar tie molecules and relative displacement of micro-fibrils.

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Authors and Affiliations

  1. Key Laboratory of Materials Physics, Institute of Solid State Physics, Hefei Institute of Physics Science, Chinese Academy of Sciences, Hefei, China

    Xian Zhang, Xingyou Tian, Xiayin Yao, Jin Zheng, Yong Li & Ping Cui

  2. Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, China

    Xingyou Tian, Yong Li & Ping Cui

  3. School of Materials Science and Engineering, Zhengzhou University, Henan, China

    Wentao Liu

Authors
  1. Xian Zhang
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  2. Xingyou Tian
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  3. Xiayin Yao
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  4. Jin Zheng
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  5. Wentao Liu
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  6. Yong Li
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  7. Ping Cui
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Correspondence to Ping Cui.

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Zhang, X., Tian, X., Yao, X. et al. Isothermal and non-isothermal shrinkage behaviors of highly oriented PET yarns. Fibers Polym 9, 360–364 (2008). https://doi.org/10.1007/s12221-008-0058-5

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  • DOI: https://doi.org/10.1007/s12221-008-0058-5

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