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Relaxation behavior of poly(trimethylene 2,6-naphthalate) in nanoclay confinement

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Abstract

The relaxation behavior of poly(trimethylene 2,6-naphthalate)/nanoclay composites is investigated using differential scanning calorimetry (DSC) and dynamic mechanical analyzer (DMA). The incorporation of two different types of nanoclays in the PTN matrix intercalated the PTN chains in the narrow space of clay intergalleries and constrained the polymer chains in the vicinity of nanoclay layers. Despite the presence of constrained region, the glass transition temperature of the PTN/nanoclay composite is decreased as compared to neat PTN. Moreover, the activation energy of the PTN is reduced and the relaxation rate of PTN becomes faster in the presence of nanoclays. The enhanced relaxation dynamics of PTN chains at Tg depends on the evolution of local free volume owing to the confining effect of chain intercalation.

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Authors and Affiliations

  1. School of Chemical and Materials Engineering, National University of Sciences and Technology, H-12, Islamabad, Pakistan

    Ahmad Nawaz Khan

  2. Graduate Institute of Materials Science and Technology, National Taiwan University of Sciences and Technology, Taipei, 106, Taiwan

    Po-Da Hong

  3. National Synchrotron Radiation Research Center, Hsinchu, 300, Taiwan

    Wei-Tsung Chaung

Authors
  1. Ahmad Nawaz Khan
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  2. Po-Da Hong
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  3. Wei-Tsung Chaung
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Correspondence to Ahmad Nawaz Khan or Po-Da Hong.

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Khan, A.N., Hong, PD. & Chaung, WT. Relaxation behavior of poly(trimethylene 2,6-naphthalate) in nanoclay confinement. J Polym Res 20, 280 (2013). https://doi.org/10.1007/s10965-013-0280-8

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  • DOI: https://doi.org/10.1007/s10965-013-0280-8

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