Preparation and Characterization of Poly(methyl methacrylate)-b-poly(N-isopropylacrylamide)/Attapulgite Nanocomposites via Reverse ATRP
1.Introduction In recent years, polymer/clay nanocomposites have attracted a great deal of attention because addition of a low volume fraction of clay to polymeric matrix will significantly enhance its physical properties, such as mechanical and barrier properties, flammability resistance and thermal stability1. Attapulgite is a type of natural fibrillar silicate clay mineral and its fibrillar single crystal is the smallest structure unit with a length of 500-2000 nm and 10-25 nm in diameter2.A new poly(methyl methacrylate)-b-poly (Nisopropylacrylamide) (PMMA-b-PNIPAM) amphiphilic diblock copolymer brushes is prepared using attapulgite as inorganic substrate by surface-initiated reverse ATRP (Fig. 1). Chain extension and GPC studies of the resulting polymers are characterized to confirm the living/controlled nature of the new polymerization process. Successful grafting is determined by FT-IR analysis, TEM and thermogravimetric analyses. Using this method is expected to open up a new method and explore a wider way to the surface modification of attapulgite.
Attapulgite RATRP Kinetic studies Macroinitiator
Jiucun Chen Yunpu Wang Shoucun Zhang Yongqian Shen
Institute of Polymer,Northwest Normal University,Key Laboratory of polymer Materials of Gansu Provin Institute of Polymer,Northwest Normal University,Key Laboratory of polymer Materials of Gansu Provin
国际会议
江苏镇江
英文
117-118
2008-10-15（万方平台首次上网日期，不代表论文的发表时间）