SOME CHARACTERISTICS OF A NEW AND NOVEL MELT PREPARATION METHOD FOR POLY(PHENYLENE SULFIDE)

被引：15

作者：

RULE, M ^{[1
]}

FAGERBURG, DR ^{[1
]}

WATKINS, JJ ^{[1
]}

LAWRENCE, PB ^{[1
]}

ZIMMERMAN, RL ^{[1
]}

CLOYD, JD ^{[1
]}

机构：

[1] EASTMAN CHEM CO,KINGSPORT,TN 37662

来源：

MAKROMOLEKULARE CHEMIE-MACROMOLECULAR SYMPOSIA | 1992年 / 54-5卷

关键词：

D O I：

10.1002/masy.19920540120

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Preparation of poly(phenylene sulfide) (PPS) by the new and novel melt phase reaction of p-diiodobenzene and sulfur is reported. This new, unique polymerization process can be carried out either entirely in the melt or by a combination of melt and solid state polymerization. Elemental iodine was the reaction by-product. This process produced very high melt viscosity PPS with degrees of polymerization of several hundred or more. A more Newtonian viscosity over a range of shear rates indicated more linearity of the PPS chains than commercial materials. IR analysis of meta- and orthocopolymers showed a very high reaction specificity for ipso substitution. Disulfide linkages present in the polymer appeared to be involved in rapid chain equilibration of melt-mixed samples but did not appear to adversely affect overall stability of the final polymer. Disulfides also appeared to be a reactive species for chain buildup, and an initial mechanism based on this is proposed. Crystallization rates can be tailored from moderate to very fast. Although only PPS has been addressed in this report, extensions to other poly(arylene sulfide)s are obvious.

引用

页码：233 / 246

页数：14

共 19 条

[1]

Edmonds Jr JT, 1967, US patent, Patent No. [3 354 129, 3354129]

[2]

FAGERBURG DR, 1989, Patent No. 4877862

[3] MOLECULAR-WEIGHT DISTRIBUTION OF POLYPHENYLENE SULFIDE BY HIGH-TEMPERATURE GEL-PERMEATION CHROMATOGRAPHY [J].