PMMA/MMT

FIGURE 11.25 TGA curves of neat PMMA and PMMA/MMT nanocomposites at 5% loading. (FromZhu, J. et al., Polym. Degrad. Stab., 77, 253, 2002. With permission.)... 

Li, Y., Zhao, B., Xie, S., and Zhang, S. 2003. Synthesis and properties of poly(methyl methacrylate)/ montmorillonite (PMMA/MMT) nanocomposites. Polymer International 52 892-898. 

Orientation of clay platelets in the axial direction has an impact on the mechanical properties of the nanofiber. In PMMA/MMT clay composite nanofibers, the mechanical deformation process was reported to be somewhat different from the brittle failure of comparable bulk nanocomposites. The deformation in the nanofibers occms via shear flow that involves a nanoscale necking process (Kim, G.-M., et al. 2005a). However, in this instance the interpretation is complicated by the nanoporous morphology of the fiber electrospun from CHCI3. 

Fig. 12 Preparation of PMMA/MMT nanocomposite by in situ coordination polymerization using Ni(acac)2 catalyst. Reproduced with kind permission from Cui et al. [103]...

Table 13.1 Relationships of the composition of PMMA-MMT clay nanocomposite materials with the R, and R measured using electrochemical methods...

The present review of nanocomposites synthesized by in situ polymerization highlights an increasing number of studies on emulsifier-free emulsion polymerization. In our laboratory, using the in situ emulsifier-free emulsion technique, we have prepared a number of polymer nanoparticles and nanocomposites, such as PMMA and PAN nanoparticles, PEHA-SS nanocomposite used for biodegradable superabsorbents, pressure-sensitive adhesives (PSAs), PMMA-MMT, PBA SS, PBMA SS-Mg(OH)2 nanocomposites used for fire retardants, PAN SS used as a water absorbent, poly(EHA-co-AA)-SS nanocomposite to act as a PSA in transdermal drug delivery (TDD) and poly(AA-co-AM)-MBA nanohydrogel for colon-specific drug delivery. ... 

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