用自组装法制备聚合物纳米复合膜

Ultrathin Polymeric Nanocomposite Films Prepared by Self-assembly

建立在静电相互作用原理基础上的自组装法是一新型制备聚合物纳米复合超薄膜的方法。文章比较了自组装法（self—assembly，SA）与Langmuir—Blodgett技术（LB）及其它方法在制备有机复合膜时的优劣。SA法由于操作简单、适用范围广、膜的结构稳定性较高，因此较LB技术等具有更大的实用价值。利用SA法，可以制备各种有机聚电解质与其带相反电荷的有机聚电解质、粘土类片状化合物及无机纳米颗粒、生物大分子等组成的聚合物纳米复合膜，为实现复合膜的功能化创造了条件。

Self-assembly (SA),a new method of creating ultrathin polymericnanocomposite films is introduced in this paper,which is based on the electrostatic attraction betweenopposite charges. In contrast to classic Langmuir--Blodgett and other techniques,films' goodlong--term thermal and mechanical stability,relative ease of preparation and high degree ofversatility render SA technique amenable to a large variety of diverse polyelectrolytesystems, such as polyelectrolyte -- polyelectrolyte, polyelectrolyte -- clay platelets, polyelectrolyte--protein,polyelectrolyte--inorganic nanaparticles,and so on.