Well-defined graft copolymers of methacrylate, acrylate, and styrene via ruthenium-catalyzed living radical polymerization

作者：Miura Yu; Satoh Kotaro; Kamigaito Masami^*; Okamoto Yoshio

来源：Polymer Journal, 2006, 38(9): 930-939.

DOI：10.1295/polymj.PJ2006031

• graft polymer
• living radical polymerization
• metal catalyst
• ruthenium
• methacrylate
• acrylate
• styrene
• precision polymer synthesis

The ruthenium-catalyzed living radical polymerization was first applied to the synthesis of a series of well-defined graft polymers with the controlled lengths of both the backbone and graft chains. The synthetic method was based on the ruthenium-catalyzed "grafting-from" polymerization of various monomers, such as methacrylate, acrylate, and styrene, from the backbone polymers also obtained via the ruthenium-catalyzed living radical polymerization. The backbone polymer was first synthesized by the ruthenium-catalyzed living radical random copolymerization of methyl methacrylate (MMA) and 2-(trimethylsilyloxy)ethyl methacrylate (TMSHEMA) followed by the in situ transformation of the silyloxyl group into the ester with a C-Br bond via direct reaction with the acid bromide (2-bromoisobutyryl bromide). The obtained multifunctional macroinitiator was employed for the ruthenium-catalyzed "grafting-from" radical polymerization of MMA, n-butyl acrylate, styrene, and TMSHEMA to afford a series of the graft polymers (M-w/M-n similar to 1.1) with controlled lengths of the backbone and graft chains.

• 出版日期2006