High Performance Polymers oligomeric

Zeng, J., S. Kumar, S. Iyer, D. A. Schiraldi, and R. I. Gonzalez (2005c). Reinforcement of poly(ethylene terephthalate) fibers with polyhedral oligomeric silsesquioxanes (POSS). High Performance Polymers 17(3) 403-424. 

In summary, when surfactants are selected for nanofillers intended for PET nanocomposites, there are important requirements that should be met, substantially limiting the range of appropriate surfactants. As a first approach, alkylammoniums should be avoided, whereas alkylimidazoliums should be preferred. This last class of surfactants are applicable to high-performance nanocomposites beyond PET for example, they were successfully used in polystyrene and polyamide matrices [32], epoxies [35], and ABS polymers [36, 37], as well as for fillers other than clays, such as polyhedral oligomeric silsesquioxane (POSS) [38] and carbon nanoffibes [39]. 

Solvent Extraction Studies. Techniques necessary to detect lipid species extracted from in vitro and in vivo exposed Biomer were developed. Extractions with a nonpolar swelling solvent (e.g., CHC13) employing a soxhlet apparatus were performed to extract preferentially lipophilic biological components from Biomer or previously isolated neointimal samples. Experimentation demonstrated the high solubility in chloroform of polymer-derived monomeric and oligomeric components. A separation of lipids from these components was therefore required. 

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