Ring‐opening polymerization of 1,4‐oxathian‐2‐one and its copolymerization with δ‐valerolactone
作者:Qi‐Yuan Wang、Meng‐Xue Cao、Xiao‐Wei Kan、An Lv、Fu‐Sheng Du、Zi‐Chen Li
DOI:10.1002/pol.20220054
日期:2022.7
diphenyl phosphate (DPP) were screened for the ring-opening polymerization (ROP) of OX in dichloromethane at 30°C. It was found that OX has a high polymerizability, the TBD-catalyzed ROP is very fast but with serious side reactions, the DBU-catalyzed ROP is moderately controlled, and the DPP-catalyzed ROP is well controlled until the polymerization reach equilibrium. Bulk ROP of OX-SO2 was achieved with
单体1,4-oxathian-2-one ( OX ) 采用一锅两步法合成, 氧化为砜酯单体1,4-oxathian-2-one-4,4-dioxide ( OX-SO 2 )。三种有机催化剂,1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD)、1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) 和磷酸二苯酯 (DPP)在 30°C 下筛选OX在二氯甲烷中的开环聚合 (ROP) 。发现OX具有高聚合性,TBD催化的ROP非常快但副反应严重,DBU催化的ROP受到适度控制,DPP催化的ROP受到良好控制,直到聚合达到平衡。OX-SO 2的散装 ROP在 130°C 下用辛酸亚锡 ((Sn[Oct] 2 ) 实现。Poly (OX)是一种半结晶聚酯 ( T m = 40-60°C, T g = -39.6°C),而Poly(OX-