POLY(P-PHENYLENE SULFONE)

被引:53
作者
ROBELLO, DR
ULMAN, A
URANKAR, EJ
机构
[1] Imaging Research Laboratories, Eastman Kodak Company, Rochester
关键词
D O I
10.1021/ma00077a004
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The title polymer has been synthesized in moderate molecular weight by the self-condensation of sodium 4-halobenzenesulfinate at 175-degrees-C in dimethylsulfoxide. The use of a small amount of 4-fluorophenyl sulfone served to greatly increase the yield of polymer, presumably by acting as an initiator for a chain-type polymerization. The title polymer is highly crystalline (>85%) and poorly soluble in all solvents attempted. The number-average degree of polymerization was estimated to be 10-16 by elemental analysis. No thermal transitions below 500-degrees-C were detected by DSC. The polymer exhibited extremely high and unusual thermal stability when studied by TGA; the onset of significant mass loss occurred at 517-degrees-C in nitrogen and at 555-degrees-C in air. The polymer was characterized by ER and solid-state C-13 NMR spectroscopy and by X-ray diffraction. Analogous model compounds for the trimer and tetramer were prepared and used to confirm the structure of the polymer.
引用
收藏
页码:6718 / 6721
页数:4
相关论文
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