CAJ | 학술논문

MADIX／RAFT聚合是黄原酸酯调控的可逆加成－断裂链转移自由基聚合，它可用于调控非共轭单体的活性／可控自由基聚合。以乙二醇为原料，将乙二醇的两个羟基转化为O－乙基黄原酸酯，得到黄原酸酯双官能团链转移剂（CTA）。用这个CTA调控N－乙烯基己内酰胺（ NVCL）的MADIX／RAFT聚合，合成了聚（ N－乙烯基己内酰胺）。用1 H NMR谱证明了所得聚合物和中间产物的结构。
MADIX／RAFT취합시황원산지조공적가역가성－단렬련전이자유기취합，타가용우조공비공액단체적활성／가공자유기취합。이을이순위원료，장을이순적량개간기전화위O－을기황원산지，득도황원산지쌍관능단련전이제（CTA）。용저개CTA조공N－을희기기내선알（ NVCL）적MADIX／RAFT취합，합성료취（ N－을희기기내선알）。용1 H NMR보증명료소득취합물화중간산물적결구。
Macromolecular design via interchange of xanthates ( MADIX)/reversible addition-fragmentation chain transfer ( RAFT ) polymerizations have demonstrated the most promise for the controlled polymerization of unconjugated monomers.A bis( bromopropionate ) was first synthesized by reaction of ethylene glycol with 2-bromopropionyl bromide.The resulting bromo end groups were converted to two chain transfer end groups ( O-ethyl xanthate ) via a substitution reaction with potassium ethyl xanthogenate , yielding a xanthate difunctional chain transfer agent ( CTA ).Poly ( N-vinylcaprolactam ) was synthesized via MADIX/RAFT polymerization of N-vinylcaprolactam by employing the CTA.The structure of the polymer and its intermediate products was characterized by 1 H NMR spectra.