以甲基丙烯酸甲酯(MMA)为单体,苯乙烯-马来酸酐共聚物(SMA)为乳化剂进行乳液聚合研究。通过改变乳化剂的用量、引发剂的用量、功能单体的用量等条件来研究分析乳液聚合的最佳反应条件。实验结果表明:当聚合反应温度为80℃,苯乙烯-马来...以甲基丙烯酸甲酯(MMA)为单体,苯乙烯-马来酸酐共聚物(SMA)为乳化剂进行乳液聚合研究。通过改变乳化剂的用量、引发剂的用量、功能单体的用量等条件来研究分析乳液聚合的最佳反应条件。实验结果表明:当聚合反应温度为80℃,苯乙烯-马来酸酐共聚物的用量为0.5 g(2.5%单体总质量),过硫酸铵(AA)的用量为0.1 g(0.5%单体总质量),丙烯酸(AA)的用量为1.4 m L(10%单体摩尔质量),乳液性能优良。展开更多
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
文摘以甲基丙烯酸甲酯(MMA)为单体,苯乙烯-马来酸酐共聚物(SMA)为乳化剂进行乳液聚合研究。通过改变乳化剂的用量、引发剂的用量、功能单体的用量等条件来研究分析乳液聚合的最佳反应条件。实验结果表明:当聚合反应温度为80℃,苯乙烯-马来酸酐共聚物的用量为0.5 g(2.5%单体总质量),过硫酸铵(AA)的用量为0.1 g(0.5%单体总质量),丙烯酸(AA)的用量为1.4 m L(10%单体摩尔质量),乳液性能优良。
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.
