DYNAMICS OF <italic style="font-style: italic">α</italic> AND <italic style="font-style: italic">α</italic>′ RELAXATION IN LAYERED SILICATE/POLYSTYRENE NANOCOMPOSITES STUDIED BY ANELASTIC SPECTROSCOPY

Shu-ying Shang; Zheng-ping Fang

doi:10.1007/s10118-013-1339-z

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DYNAMICS OF α AND α′ RELAXATION IN LAYERED SILICATE/POLYSTYRENE NANOCOMPOSITES STUDIED BY ANELASTIC SPECTROSCOPY

PAPER | Updated：2023-01-03

- DYNAMICS OF α AND α′ RELAXATION IN LAYERED SILICATE/POLYSTYRENE NANOCOMPOSITES STUDIED BY ANELASTIC SPECTROSCOPY
- Chinese Journal of Polymer Science Vol. 31, Issue 10, Pages: 1334-1342(2013)
- Affiliations：
  
  a.Institute of Polymer Composites, Zhejiang University, Hangzhou 310027, China
  b.College of Physics & Information Engineering, Henan Normal University, Xinxiang 453007, China
  c.Laboratory of Polymer Materials and Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China
- Author bio：
  
  *Shu-ying Shang (尚淑英), E-mail: shangshy@163.com
- Funds：
- DOI：10.1007/s10118-013-1339-z
  CLC：
- Received：24 March 2013，
  
  Revised：2013-05-13，
  
  Accepted：03 June 2013，
  
  Published：2013-10
- Accepted：
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Shu-ying Shang, Zheng-ping Fang. DYNAMICS OF α AND α′ RELAXATION IN LAYERED SILICATE/POLYSTYRENE NANOCOMPOSITES STUDIED BY ANELASTIC SPECTROSCOPY[J]. Chinese Journal of Polymer Science, 2013, 31(10): 1334-1342. DOI: 10.1007/s10118-013-1339-z.
DOI：

Shu-ying Shang, Zheng-ping Fang. DYNAMICS OF α AND α′ RELAXATION IN LAYERED SILICATE/POLYSTYRENE NANOCOMPOSITES STUDIED BY ANELASTIC SPECTROSCOPY[J]. Chinese Journal of Polymer Science, 2013, 31(10): 1334-1342. DOI: 10.1007/s10118-013-1339-z. DOI：

摘要

Abstract

The dynamics of polymer chains in layered silicate/polystyrene nanocomposites was studied by anelastic spectroscopy. Two thermal activated peaks (

and

′peaks) appeared when the specimens were heated to a high temperature and they were related to glass transition and liquid-liquid transition

respectively. The activation energy was calculated based on Arrhenius equation and it showed that the activation energy of glass transition (

) is much higher than that of liquid-liquid transition (

). Furthermore

the most interesting result for the activation energy was that there were two contrary trends for

and

decreased and

increased with the addition of clay platelets. The fragile parameter was analyzed and the variation of fragile parameters for the two transitions was also contrary to each other with the addition of clay platelets. All the results indicated that the confinement effect of clay platelets on the dynamics of polymer chain was scale dependent

and perhaps

the two transitions were produced by different mechanisms.

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DYNAMICS OF α AND α′ RELAXATION IN LAYERED SILICATE/POLYSTYRENE NANOCOMPOSITES STUDIED BY ANELASTIC SPECTROSCOPY

DOI：10.1007/s10118-013-1339-z

摘要

Abstract

关键词

Keywords

references