Polymer-organoclay nanocomposites study

In the Part 1 of this volume, many topics such as, trends in polymeric gas separation membranes, trends in polymer/organoclay nanocomposites, S5uithesis of the hybrid metal-polymer nanocomposite, oxidation of pol5 ropylene-graphite nanocomposites, and investigation on the cleaning process of gas emissions are discussed. In Part 2, several case studies and reviews in biochemical sciences are reported. 

Since the development of nylon 6/clay nanocomposites by Kojima et al. [3,4] has been successful in tremendously reducing gas permeabihty, a large number of studies on polymer/organoclay nanocomposites have been reported. There are three different approaches possible to fabricate nanocomposites of polymers. The first one is the solution process. Clay is hydrophilic so that it can... 

Dzhangurazov, B. Zh. Kozlov, G. V. Mikitaev, A. K. The influence of interfacial adhesion level on nanofiller structure in nanocomposites polymer/organoclay. Surface. X-raying, Synchrotron and Neutron Studies, 2011, 7, 96-99. 

Song, L. Yuan, H. Y. T., Rui, Z., and Zuyao, W. F. Study on the properties of flame retardant polyurethane/organoclay nanocomposite. Polymer Degradation and Stability, 87, 111-116 (2005). 

Song, L. Hu, Y. Tang, Y. Zhang, R. Chena, Z. Fa, W. Study on the properties of flame retardant polynrethane/organoclay nanocomposite. Polym. Degrad. Stab. 2005, 87, 111-116. 

In this section, we present the dispersion characteristics and rheology of end-functionalized polymers investigated by Zha et al. (2005). In their study, a PS and an SI diblock copolymer were synthesized via anionic polymerization. Then, the chain end of the PS was carboxylated to obtain end-fimctionalized PS-t-COOH, and the chain end of the PI block in the SI diblock copolymer was carboxylated to obtain end-functionalized SI-t-COOH. Subsequently, both PS-t-COOH and SI-t-COOH were neutralized using sodium hydroxide (NaOH) to obtain PS-t-COONa and SI-t-COONa. Each of the end-functionalized polymers was mixed with Cloisite 30B or Cloisite 20A to prepare nanocomposites. Table 12.2 gives sample codes of the eight organoclay nanocomposites prepared. 

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