%0 Journal Article
%T Effect of Curing Poly(<i>p</i>-Phenylene Sulfide) on Thermal Properties and Crystalline Morphologies
%A Sungho Lee
%A Do-Hwan Kim
%A Jae-Ha Park
%A Min Park
%A Han-Ik Joh
%A Bon-Cheol Ku
%J Advances in Chemical Engineering and Science
%P 145-149
%@ 2160-0406
%D 2013
%I Scientific Research Publishing
%R 10.4236/aces.2013.32017
%X <p class=\"MsoNormal\">
	<span lang=\"EN-US\">Commercial poly(<i>p</i>-phenylene
sulfide) (PPS) was thermally cured, which resulted in an increase of molecular
weight due to cross-linking. Non-isothermal crystallization studies of samples
cured for up to 7 days at 250?C showed a monotonous increase of crystallization
temperature compared to pure PPS. However, a further increase of curing time decreased
the crystallization temperature. The change in the half-crystallization time (<i>t</i><sub>1/2</sub>) was similar to the
crystallization temperature. Thus, the cross-linking of PPS affected
crystallization behaviors significantly</span><span lang=\"EN-US\">.</span><span lang=\"EN-US\"> To a certain
extent, crosslinks acted as nucleation agents, but excessive cross-linking
hindered the crystallization. Morphologies observed by polarized optical
microscopy suggested that thermal curing for as little as 1 day contributed to
the spherulitic structure having a smaller size, that was not observed with
pure PPS.</span><span lang=\"EN-US\"><o:p></o:p></span> 
</p>
%K Poly(&lt
%K i&gt
%K p&lt
%K /i&gt
%K -Phenylene Sulfide)
%K Thermal Curing
%K Non-Isothermal Crystallization
%K Cross-Linking
%K Crystalline Morphologies
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=30497