POLYETHYLENE NANOCOMPOSITES FROM IN SITU POLYMERIZATION
The presence of well dispersed inorganic nanofillers in polymer matrices, such as nanopanicles,nanotubes and nanoclays, can improve polymer properties (such as mechanical strength or thermal stability) and introduce novel properties which cannot be obtained by a simple macroscopic mixing of polymer with a bulk inorganic material. As an example, polymer/inorganic material nanocomposites have strongly attracted research interests. There are two kinds of methods for fabricating polymer nanocomposites, one being physical mixing (including melt-mixing and solution mixing) and the other being in situ polymerization in the presence of nanofillers.However, obtaining a high degree of dispersion of nanofillers in a polymer matrix remains a challenge due to agglomeration of nanofillers driven by their high surface energy. The well dispersion of nanofillers and good stress transfer between polymer matrix and nanofillers depend on strong interaction at the interface of two components. There is an important effect of interfacial interaction between two components on mechanical properties of polymer nanocomposites. Thus a key issue for the construction of nanocomposites is the development of specific interactions at the interface of the organic and inorganic components. Graft polymerization onto nanofillers is an effective method to increase interracial interaction in polymer nanocomposites.
Shiyun Li Changyi Ren Wenxi Cheng Yanhui Wang Tao Tang
State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
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
92-93
2008-10-27（万方平台首次上网日期，不代表论文的发表时间）