N-Alkyl PPTA: Preparation and Characterization

Rui Zhang; Hai Juan Kong; Hong Peng Zhong; Jing Liu; Jian Jun Zhou; Cui Qing Teng; Yu Ma; Mu Huo Yu

doi:10.4028/www.scientific.net/AMR.554-556.105

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 554-556N-Alkyl PPTA: Preparation and Characterization

N-Alkyl PPTA: Preparation and Characterization

Abstract:

N-alkyl poly(p-phenylene terephthalamide)s (PPTA) is synthesized from PPTA and bromoalkane via metalation process in a solution of potassium methylsulfinylcarbanion in dimethyl sulfoxide. The modified PPTAs have been dissolved in conventional solvents, such as THF and CHCl3. The effects of substituted alkyl, substitution degree and inherent viscosity of PPTA on the solubility of N-alkyl PPTA were discussed. The substitution degree is calculated by FTIR and NMR. The molecular weight and distribution of N-alkyl PPTA has been obtained by GPC. The thermal properties are also discussed.