Poly(silyl ether)s by Ruthenium-Catalyzed Hydrosilylation Polymerization of Aliphatic ω-Dimethylsilyloxy Ketones and Copolymerization of Aliphatic α,ω-Diketones with α,ω-Dihydridooligodimethylsiloxanes
作者:Joseph M. Mabry、Matthew K. Runyon、William P. Weber
DOI:10.1021/ma0115139
日期:2002.3.1
ω-dimethylsilyloxy ketones is catalyzed by activated dihydridocarbonyltris(triphenylphosphine)ruthenium (Ru) to yield unsymmetrical poly(silyl ether)s. Likewise, Ru catalyzes the copolymerization of aliphatic α,ω-diketones with α,ω-dihydridooligodimethylsiloxanes to yield symmetrical poly(silyl ether)s. These polymers have been characterized by 1H, 13C, and 29Si NMR as well as IR spectroscopy. Their molecular
脂族ω-二甲基甲硅烷氧基酮的氢化硅烷化聚合反应是通过活化的二氢羰基三(三苯基膦)钌(Ru)催化生成的不对称聚甲硅烷基醚。类似地,Ru催化脂肪族α,ω-二酮与α,ω-二氢寡聚二甲基硅氧烷的共聚以产生对称的聚(甲硅烷基醚)。这些聚合物的特征在于1 H,13 C和29 Si NMR以及IR光谱。它们的分子量分布(M w / M n)已通过GPC确定。通过1 H NMR进行的端基分析可独立测定M n。通过TGA测量它们的热稳定性,并且通过DSC确定它们的玻璃化转变温度(T g)。手性中心影响这些聚(甲硅烷基醚)的NMR谱。已经评估了硅氧烷链长对共聚物T g的影响。