Bulletin of Materials Science, ( ISI ), Volume (37), No (5), Year (2014-7) , Pages (1113-1121)

Title : ( Non-isothermal crystallization kinetics of polyethylene–clay nanocomposites prepared by high-energy ball milling )

Authors: MARYAM ABARESHI , Seyed Mojtaba Zebarjad , Elaheh Kafshdare Goharshadi ,

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Non-isothermal crystallization kinetics of pure medium density polyethylene (MDPE) and MDPE– clay nanocomposites have been investigated by differential scanning calorimeter. The modified Avrami, Ozawa, Liu and Ziabicki equations have been applied to describe non-isothermal crystallization process. The results of Avrami analysis showed a very complicated crystallization mechanism. Although, Ozawa equation failed to provide an adequate description for non-isothermal crystallization process, Liu equation could describe it well. The data showed the crystallization rate of MDPE and nanocomposites raises with increasing cooling rate and the crystallization rate of nanocomposite is faster than that of MDPE at a given cooling rate. Ziabicki’s kinetic crystallizability index showed that clay can increase the ability of MDPE to crystallize, when it is cooled at unit cooling rate. The activation energy of samples has been evaluated by Kissinger method. The results showed that the activation energy of nanocomposite was lower than that of MDPE.

Keywords

, Differential scanning calorimeter; non, isothermal crystallization kinetics;
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@article{paperid:1042579,
author = {MARYAM ABARESHI and Zebarjad, Seyed Mojtaba and Kafshdare Goharshadi, Elaheh},
title = {Non-isothermal crystallization kinetics of polyethylene–clay nanocomposites prepared by high-energy ball milling},
journal = {Bulletin of Materials Science},
year = {2014},
volume = {37},
number = {5},
month = {July},
issn = {0250-4707},
pages = {1113--1121},
numpages = {8},
keywords = {Differential scanning calorimeter; non-isothermal crystallization kinetics; nanocomposites; polymer.},
}

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%0 Journal Article
%T Non-isothermal crystallization kinetics of polyethylene–clay nanocomposites prepared by high-energy ball milling
%A MARYAM ABARESHI
%A Zebarjad, Seyed Mojtaba
%A Kafshdare Goharshadi, Elaheh
%J Bulletin of Materials Science
%@ 0250-4707
%D 2014

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