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| Synthesis and Properties of a Ampholytic Polyphenylene Sulfide (PPS) |
| XIAO Hui, TAO Rong, LI Ruihai |
| Department of Polymer Science and Engineering, Sichuan University, Chengdu 610065 |
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Cite this article:
XIAO Hui TAO Rong LI Ruihai. Synthesis and Properties of a Ampholytic Polyphenylene Sulfide (PPS). Chin J Mater Res, 2012, 26(3): 331-336.
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Abstract Ampholytic polyphenylene sulfide (P–SO3–TMA and P–SO3–DMA) was prepared from sulfonated polyphenylene sulfide (P–SO3) by bromination, followed by the substitution of bromine by quaternary ammonium group and tertiary amine group. The properties of ampholytic polyphenylene sulfide, such as dissolubility, reduced viscosity, intrinsic viscosity, rheological behavior and thermostability, were investigated, and the effects of key factors on performance were studied. The results showed that polar groups on the chain of sulphonated PPS through bromination and the substitution of bromine by quaternary ammonium group and tertiary amine group, make ampholytic PPS soluble in polarity solvent. The viscosities of P–SO3–TMA and P–SO3–DMA have a increasing trend with raising pH. Aqueous solution diluted make mutual attraction between sulfonic acid group and quaternary ammonium group or tertiary amine group weakened, and the conformation becomes loose, leading to reduced viscosity increasing. The ability of monovalent and divalent catonic charges influencing the viscosity of ampholytic polyphenylene sulfide obeys the following sequence: NH4+
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Received: 01 December 2011
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