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- W2035784521 abstract "N-substituted poly(p-phenylene terephthalamide)s (PPTA), such as N-alkylated, N-aralkylated, and N-carboxymethylated poly(p-phenylene terephthalamide), were synthesized from PPTA and the corresponding halides by the polymer reaction via the metalation reaction in a solution of sodium methylsulfinylcarbanion in dimethyl sulfoxide at low temperature. The introduction of various substitutional groups into the amide groups of PPTA increased their solubilities, but decreased their thermal stabilities compared with PPTA. The effects of various substitutional groups on the thermal properties and the solubilities are discussed. Liquid crystal formation was noticed for PPTA substituted with bulky groups such as 9-anthrylmethyl group." @default.
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- W2035784521 date "1981-05-01" @default.
- W2035784521 modified "2023-10-17" @default.
- W2035784521 title "N-substituted poly(p-phenylene terephthalamide)" @default.
- W2035784521 doi "https://doi.org/10.1002/pol.1981.170190510" @default.
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