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Anisotropic linear thermal expansivity of poly(ether-ether-ketone)

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Field Value
 
Title Anisotropic linear thermal expansivity of poly(ether-ether-ketone)
 
Creator GOYAL, RK
TIWARI, AN
MULIK, UP
NEGI, YS
 
Subject anisotropy
glass transition
temperature
thermal expansion
 
Description This paper deals with anisotropic behavior of thermal expansivity (α) of poly(ether-ether-ketone) (PEEK) sample prepared by compression molding above the melting point of polymer. The α was determined using thermo mechanical analyzer (TMA) for the temperature interval 50–250 °C in expansion mode. It is found that out-of-plane thermal expansivity (αz) is 3.8-fold of the in-plane thermal expansivity (αxy) below the glass transition temperature (Tg) of PEEK while αz is decreased to 1.8-fold of the αxy above the Tg. Moreover, the average αz over the range studied is about 2.2-fold of the αxy. This anisotropic behavior may be attributed to the alignment of polymer spherulites and chains along in-plane direction due to compressive forces under hot compression molding.
 
Publisher Elsevier
 
Date 2009-06-10T02:28:28Z
2011-12-08T07:55:11Z
2011-12-26T13:02:30Z
2011-12-27T05:48:50Z
2009-06-10T02:28:28Z
2011-12-08T07:55:11Z
2011-12-26T13:02:30Z
2011-12-27T05:48:50Z
2006
 
Type Article
 
Identifier European Polymer Journal 42(10), 2888-2893
0014-3057
10.1016/j.eurpolymj.2006.06.018
http://hdl.handle.net/10054/1457
http://dspace.library.iitb.ac.in/xmlui/handle/10054/1457
 
Language en