动力学链不终止 0 向单体转移终止 活性链向单体转移，生成的大分子含有不饱 和端基，同时再生出活性单体离子对 CH3 CHg HfcH-9于c2-(BF,OH°+H= CH3 CH, CH3 CHs HfCH-C-JCH-C=CH2 +CH-C(BF3OH CH3向单体转移终止 活性链向单体转移，生成的大分子含有不饱 和端基，同时再生出活性单体离子对 动力学链不终止 H CH2 C CH3 CH3 CH2 C CH3 CH3 CH3 (BF3 OH) CH3 CH2 C CH3 + H+ n (BF3 H CH OH) 2 C CH3 CH3 CH2 C CH3 CH3 CH2 CH3 CH3 C CH3 + n