Journal of Polymer Research

, 20:280 | Cite as

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

  • Ahmad Nawaz Khan
  • Po-Da Hong
  • Wei-Tsung Chaung
Original Paper


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.


Nanocomposites Polytrimethylene 2 6-naphthalate Relaxation dynamics 


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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  1. 1.School of Chemical and Materials EngineeringNational University of Sciences and TechnologyIslamabadPakistan
  2. 2.Graduate Institute of Materials Science and TechnologyNational Taiwan University of Sciences and TechnologyTaipeiTaiwan
  3. 3.National Synchrotron Radiation Research CenterHsinchuTaiwan

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