Effect of Curing Poly(ip/i-Phenylene Sulfide) on Thermal Properties and Crystalline Morphologies

Sungho Lee; Do-Hwan Kim; Jae-Ha Park; Min Park; Han-Ik Joh; Bon-Cheol Ku

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Effect of Curing Poly(ip/i-Phenylene Sulfide) on Thermal Properties and Crystalline Morphologies

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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.

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《化学工程与科学期刊（英文）》 |2013年第2期|145-149|共5页
作者
Sungho Lee; Do-Hwan Kim; Jae-Ha Park; Min Park; Han-Ik Joh; Bon-Cheol Ku;
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作者单位

Carbon Convergence Materials Research Center;

Institute of Advanced Composites Materials;

Korea Institute of Science and Technology;

Wanju-gun;

Republic of Korea;

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原文格式 PDF
正文语种 chi
中图分类化学;
关键词
Poly(p-Phenylene; Sulfide); Thermal; Curing; Non-Isothermal; Crystallization; Cross-Linking; Crystalline; Morphologies;

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Effect of Curing Poly(ip/i-Phenylene Sulfide) on Thermal Properties and Crystalline Morphologies

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