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中文摘要：
首次以钴Ⅱ肟氟化硼配合物（CoBF）催化剂、2,2′-偶氮二异丁腈（AIBN）为引发剂,由催化链转移聚合法制备聚对甲基苯乙烯大分子单体（poly（p-Methylstyrene））,考察不同CoBF的用量对相对分子质量的影响。结果表明：随着CoBF用量的增加,聚对甲基苯乙烯大分子单体的相对分子质量逐渐减小。另外,还采用了基于重均聚合度（DPw）的Mayo方程,计算出催化剂表观链转移常数（ct）为365.6。
英文摘要：
Poly（p-methylstyrene） macromonomer was prepared via catalytic chain transfer polymerization（CCTP）.The CoBF was acted as a chain-transfer agent（CTA） and AIBN was used as the initiator.The effect of different amounts of CoBF on the average molecular weight（Mw） of poly（p-methylstyrene） macromonomer was investigated.The results showed that the average molecular weight of poly（p-methylstyrene） macromonomer decreased with the increase of CoBF.In addition,the apparent chain transfer constant（ct） was determined with the conventional Mayo based on number average degree of polymerization（DPw）.
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