摘要
以功能单体N-乙烯基甲酰胺与丙烯腈共聚,制备可转化为对重金属离子具有吸附能力的螯合物。深入讨论了聚合机理,以及单体配比、单体含量、引发剂含量、反应温度、反应时间对聚合物转化率、特性粘数的影响。聚合动力学研究表明,该共聚几乎没有诱导期,反应初期匀速阶段较长,其转化率接近30%,自动加速不明显。运用FTIR对结构进行了表征,确立了反应的较佳条件。
N-vinylformamide （NVF） and acrylonitrile （AN） copolymers were prepared via free radical solution copolymerization in the presence of azodiisobutyronitrile （AIBN） as an initiator. The effect of monomer ratio, monomer concentration, initiator concentration, reaction temperature and time on the monomer＇s conversion and intrinsic viscosity were investigated. The structure of copolymers was characterized by FTIR. The study of the combination of kinetics and intrinsic viscosity revealed the copolymerization according with an alternating copolymerization mechanism. The results show that there is not obvious induction period in the copolymerization and reaction goes along evenly till the conversion up to 30%. Obvious autoacceleration phenomenon was not observed in the copolymerization.
出处
《功能高分子学报》
CAS
CSCD
北大核心
2005年第4期646-650,共5页
Journal of Functional Polymers
关键词
螯合
共聚
特性粘数
N-乙烯基甲酰胺
丙烯腈
chelating
copolymerization
N -vinylformamide（NVF）
intrinsic viscosity
acrylonitrile（AN）
