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The influence of additives on crystallization of polyvinyl chloride

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Abstract

Acetanilide, adipic acid and potassium hydrogen phthalate were chosen as nucleating agents of polyvinyl chloride(PVC), and their effects on PVC crystallization were studied by differential scanning calorimetry, wide angle X-ray diffraction and fourier transform infrared spectroscopy. The experimental results indicate that all of the three additives are compatible with PVC to some extent, but adipic acid’s compatibility with PVC is less satisfactory. The three additives can improve PVC crystallinity, and acetanilide can decrease PVC glass transition temperature(T g)and narrow PVC melting range, while adipic acid and potassium hydrogen phthalate rise T g of PVC and widen its melting range. All additives do not affect PVC crystal system and all samples are in orthorhombic system. All additives can improve (200), (110), (210) and (201, 111) planes growing. Moreover, acetanilide and adipic acid can shrink PVC spacings and improve the crystal perfection of PVC, but potassium hydrogen phthalate swells spacings and reduces the perfection of PVC crystal.

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Authors and Affiliations

  1. Institute of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China

    Liu Yaqun  (刘亚群) (Lecturer) & Zhang Chaocan  (张超灿)

  2. Department of Applied Chemistry, College of Sciences, Wuhan University of Technology, Wuhan, 430070, China

    Liu Yaqun  (刘亚群) (Lecturer)

Authors
  1. Liu Yaqun  (刘亚群)
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  2. Zhang Chaocan  (张超灿)
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Correspondence to Zhang Chaocan  (张超灿).

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Funded by Scientific and Technological Project of Hubei Province(No.2002AA105A01)

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Liu, Y., Zhang, C. The influence of additives on crystallization of polyvinyl chloride. J. Wuhan Univ. Technol. 22, 271–275 (2007). https://doi.org/10.1007/s11595-005-2271-z

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  • DOI: https://doi.org/10.1007/s11595-005-2271-z

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