Reverse addition\|fragmentation chain transfer (RAFT) polymerizatin of MAn with St is reported aiming at the synthesis of a well\|defined alternating copolymer of MAn with St.The results show that the polymers possess...Reverse addition\|fragmentation chain transfer (RAFT) polymerizatin of MAn with St is reported aiming at the synthesis of a well\|defined alternating copolymer of MAn with St.The results show that the polymers possess predetermined molecular weight and molecular weight distribution as narrow as 1 2. A novel well\|defined block copolymer P(MAn\| alt \|St)\| b \|PSt has also been prepared by the copolymerization of MAn with excess amount of St in molar feed via RAFT process.展开更多
Styrene(St)-maleic anhydride(MA) copolymer(SMA) with high content of maleic anhydride is synthesized by using azobisisobutyronitrile(AIBN) as initiator,using solution-precipitation,and the gradual warming polymerizati...Styrene(St)-maleic anhydride(MA) copolymer(SMA) with high content of maleic anhydride is synthesized by using azobisisobutyronitrile(AIBN) as initiator,using solution-precipitation,and the gradual warming polymerization.The effects of the mole ratio of styrene to maleic anhydride,reaction temperature and the initiator amount on the polymerization is studied.The determination of copolymer composition is also studied for a series of different content of maleic anhydride copolymer by using thermogravimetry to determine their composition.The research show that determination process of thermogravimetry is simple,rapid and accurate.展开更多
文摘Reverse addition\|fragmentation chain transfer (RAFT) polymerizatin of MAn with St is reported aiming at the synthesis of a well\|defined alternating copolymer of MAn with St.The results show that the polymers possess predetermined molecular weight and molecular weight distribution as narrow as 1 2. A novel well\|defined block copolymer P(MAn\| alt \|St)\| b \|PSt has also been prepared by the copolymerization of MAn with excess amount of St in molar feed via RAFT process.
文摘Styrene(St)-maleic anhydride(MA) copolymer(SMA) with high content of maleic anhydride is synthesized by using azobisisobutyronitrile(AIBN) as initiator,using solution-precipitation,and the gradual warming polymerization.The effects of the mole ratio of styrene to maleic anhydride,reaction temperature and the initiator amount on the polymerization is studied.The determination of copolymer composition is also studied for a series of different content of maleic anhydride copolymer by using thermogravimetry to determine their composition.The research show that determination process of thermogravimetry is simple,rapid and accurate.
