Synthesisi and Chanacterization of Novel ABC Triblock Copolymers with Low Surface Energy
Prevention of marine biofouling is a problem of considerable economic importance because biofouling shortens vessel lifes and increases operating costs. The conventional approach to inhibit biofouling is by the release of biocides from vessels. However, increased concentrations of these biocides in marine water have been noted and may do harm to other marine lifes. All these traditional biocides have been banned for use on vessels in many countries,so we should develop more environmentally friendly antifouling coatings. Antifouling paints of low surface energy have been paid more attention as the antifouling systems without the use of biocidal agents. The purpose of our work described herein is the development of a synthetic strategy to prepare nontoxic foul-release coatings.Accordingly, the novel ABC triblock copolymers with low surface energy,poly(dimethylsiloxane)-block-poly(methylmethacrylate)-block-poly(2,2,3,3,4,4,4-heptafluorobutyl methacrylate)(PDMS-b-PMMA-b-PHFBMA), were designed and successfully synthesized through ATRP. The total reaction scheme is shown in Scheme 1. The chemical composition and structure of the copolymers were characterized by NMR, FTIR spectroscopy, and molecular weight measurement. GPC was used to study the molecular weight distribution of the PDMS-b-PMMA-b-PHFBMA triblock copolymers. Moreover, the polymerization kinetics was also investigated. Surface properties of the resulting copolymers were first investigated in this paper.The results show that the well-defined PDMS-b-PMMA-b-PHFBMA triblock copolymers aresuccessfully synthesized by ATRP and the lowest surface energy of PDMS-b-PMMA-b-PHFBMA triblock copolymers can reach as low as 3.03 mNm-1, which demonstrates the correction of molecular design, while lowest surface energy of PDMS-b-PHFBMA diblock copolymers is about 11.1 mNm-1.
Zheng-hong Luo Teng-yun He
Department of Chemical and Biochemical Engineering,Xiamen University,Xiamen 361005,Peoples Republic Department of Material Science and Engineering.Xiamen University,Xiamen 361005,Peoples Republic of
国际会议
5th International Symposium on High-Tech Polymer Materials(HTPM-V)(第五届国际高技术高分子材料学术会议)
北京
英文
177-178
2008-10-27（万方平台首次上网日期，不代表论文的发表时间）