摘要
A acrylonitrile-maleic anhydride copolymer was pre-pared by precipitation polymerization with（NH<sub>4</sub>）<sub>2</sub>S<sub>2</sub>O<sub>8</sub>-NaHSO<sub>3</sub> as oxidation-reduction initiator in water.The effects of polymerization conditions（such as contentof adjustment reagent of molecular weight,concentrationof monomers,reaction time and temperature,ratio ofinitiator to monomer and ratio of reductant to oxidizer inmole）on composition,molecular weight and conversionof the copolymer were investigated.The copolymer wascharacterized with IR and Elementary Analysis.Its ther-mal property and crystallinity were determined with DTAand WAXD,respectively.
A acrylonitrile - maleic anhydride copolymer was prepared by precipitation polymerization with (NH4)2S2O8 - NaHSO3 as oxidation - reduction initiator in water. The effects of polymerization conditions (such as content of adjustment reagent of molecular weight, concentration of monomers, reaction time and temperature, ratio of initiator to monomer and ratio of reductant to oxidizer in mole ) on composition, molecular weight and conversion of the copolymer were investigated. The copolymer was characterized with IR and Elementary Analysis. Its thermal property and crystallinity were determined with DTA and WAXD, respectively.
