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Effect of Curing Poly(p-Phenylene Sulfide) on Thermal Properties and Crystalline Morphologies

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DOI: 10.4236/aces.2013.32017    4,507 Downloads   6,995 Views   Citations

ABSTRACT

Commercial poly(p-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 (t1/2) was similar to the crystallization temperature. Thus, the cross-linking of PPS affected crystallization behaviors significantly. 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.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

S. Lee, D. Kim, J. Park, M. Park, H. Joh and B. Ku, "Effect of Curing Poly(p-Phenylene Sulfide) on Thermal Properties and Crystalline Morphologies," Advances in Chemical Engineering and Science, Vol. 3 No. 2, 2013, pp. 145-149. doi: 10.4236/aces.2013.32017.

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