ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Solution polymerisation of copper(I) 4-bromobenzenethiolate (CBT) was effected at atmospheric pressure using a range of quinoline/pyridine solvent mixtures. Yields of poly(1,4-phenylene sulfide) (PPS) were evaluated and PPS fractionated into toluene soluble (TS) and 1-chloronaphthalene soluble (CNS) material. The fractions were characterised by end-group analysis, viscometry and differential scanning calorimetry. The yield of CNS PPS is optimum for solvent mixtures comprising 70-80 vol.-% quinoline, whereas the molar mass of this fraction is at a maximum for 95 vol.-% quinoline. Results are discussed in terms of the effects of reaction temperature, complexing of CBT by quinoline and pyridine, and copper(I) bromide-catalysed debromination. A low molar mass TS PPS fraction prepared in pyridine was subjected to detailed structural analysis by IR, 1H NMR and Raman spectroscopy. Evidence is presented to show that this material contains disulfide linkages and that thiol end-groupings are absent. These results are discussed relative to possible structures for poly(arylene sulfides). The relevance of this observation to high molar mass samples of PPS and their chain extension and degradative behaviour is also discussed.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1987.021880703
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