Nanocomposites montmorillonite

Zhenyang, Y., Jingbo, Y., Shifeng, Y., Yongtao, X., Jia, M. and Xuesi, G. 2007. Biodegradable poly(L-lactide)/poly(3-caprolactone)-modified montmorillonite nanocomposites Preparation and characterization. Polymer 48 6439-6447. 

FIG. 9 Dependence of tensile strength and modulus on clay loading for epoxy-CH3(CH2)i7NH -montmorillonite nanocomposites. (From Ref. 35.)... 

Biswas, M. and Sinha Ray, SRecent Progress in Synthesis and Evaluation of Polymer-Montmorillonite Nanocomposites. Vol. 155, pp. 167-221. 

Chatteijee, A., Ebina, T., and Mizukami, F. 2005. Effects of water on the structure and bonding of resorcinol in the interlayer of montmorillonite nanocomposite—a periodic first principle study. J. Phys. Chem. B 109 7306-7313. 

The kinetics of solid state imidization of PAA, synthesized from 4,4 -oxydianilinc and pylomellitic dianhydride, both without filler and with addition of 2 and 5 weight % Na+-montmorillonite [1], The nanofiller is processed by solution of P-phenylenediamine in HC1 and then washed with de-ionized water to ensure a complete removal of chloride ions. The conversion (imidization) degree Q was determined as a function of reaction duration t with the aim of Fourier transformation of IR-spectra bands 726 and 1014 cm 1. The samples for IR studies were prepared by spin-coating of mixture PAA/Na+-montmorillonite solution in N,N-dimethylacetamide on KBr disks. Then the KBr disks were dried in vacuum at 303 K for 48 h. It was shown, that the used in paper [1] method gives exfoliated nanocomposites. The other details of polyimide/Na+-montmorillonite nanocomposites synthesis and studies in paper [1] were cited. The solid state imidization process was made at four temperatures 7 423, 473, 503 and 523 K. 

Nanoclay particles by virtue of their particulate nature are emerging as effective heterogeneous nucleating agents for polyesters. The nanoclay particles in PET/montmorillonite nanocomposites impart to PET a higher crystallization rate without the need for expensive nucleating agents. 

PLA/montmorillonite nanocomposites with a better heat resistance, a doubled modulus and an easier processing than neat PLA. 

Leszczynska, A., Njuguna, J., Pielichowski, K., and Banerjee, J. R. (a) Polymer/montmorillonite nanocomposites with improved thermal properties, Part I Factors influencing thermal stability and mechanisms of thermal stability improvement, Thermochim. Acta (2007), 453, 75-96. (b) Polymer/montmorillonite nanocomposites with improved thermal properties. Part II Thermal stability of montmorillonite nanocomposites based on different polymeric matrixes, Thermochim. Acta (2007), 454, 1-22. 

Liang, Z.-M., Yin, J., and Xu, H. J. Polyimide/montmorillonite nanocomposites based on thermally stable, rigid-rod aromatic amine modifies, Polymer (2003), 44, 1391-1399. 

Bourbigot, S., Gilman, J. W., and Wilkie, C. A. Kinetic analysis of the thermal degradation of polysty-rene-montmorillonite nanocomposite, Polym. Degrad. Stab. (2004), 84, 483 -92. 

X. Ge, D. Wang, C. Wang, M. Qu, J. Wang, C. Zhao, X. Jing, and Y. Wang, A novel phosphorus-containing copolyester/montmorillonite nanocomposites with improved flame retardancy, Fur. Polym. J., 2007, 43 2882-2890. 

Y. Cai, Y. Hu, L. Song, S. Xuan, Y. Zhang, Z. Chen, and W. Fan, Catalyzing carbonization function of ferric chloride based on ABS copolymer/organophilic montmorillonite nanocomposites, Polym. Degrad. Stabil., 2007, 92 490 196. 

Gong, F., Feng, M., Zhao, C., Zhang, S., and Yang, M. 2004. Thermal properties of poly(vinyl chloride)/ montmorillonite nanocomposites. Polym. Deg. Stab., 84(2) 289-294. 

Polyvinyl chloride-montmorillonite nanocomposites were prepared either by in-situ suspension polymerisation using initiator- and comonomer-modified montmorillonite in the presence of free-radical initiators, such as AIBN, and compared. It was found that monomer conversion was low when the nanocomposites were prepared using initiator-modified montmorillonite. Exfoliated nanocomposites... 

OPTICAL PROPERTIES OF RIGID PVC/ MONTMORILLONITE NANOCOMPOSITES WITH EPOXY RESIN AS COMPATIBILIZER... 

Polyvinyl chloride/montmorillonite nanocomposites were prepared using an epoxy resin, as compatibiliser, and the effect of this compatibiliser on the optical properties of the nanocomposites investigated. It was found that the transparency of the nanocomposites improved with increasing content of montmorillonite, which was pretreated with the epoxy resin. The good transparency of the nanocomposites also indicated that the epoxy resin improved the processing stability of the nanocomposites. 3 refs. 

The results are reported of an in depth study of the structure, thermal properties, dynamic mechanical properties, flammability and smoke properties of melt blended PVC-sodium montmorillonite nanocomposites. Investigative properties employed included X-ray diffraction, TEM, TGA, DMA and cone calorimetry. The effects of clay loading, DOP concentration, annealing, blending time and molec.wt. on the formation of the composites are discussed and fire properties of PVC-organically modified clay and PVC-sodium clay nanocomposites are presented and discussed. 15 refs. USA... 

Kong, Q., Y. Hu, H. Lu, Z. Chen, and W. Fan. 2005. Synthesis and properties of poly-styrene/Fe-montmorillonite nanocomposites using synthetic Fe-montmorillonite by bulk polymerization. J. Mater. Sci. 40 4505-4509. 

Nemeth, J., I. Dekany, K. Siivegh, T. Marek, Z. Klencsar, A. Vertes, and J. H. Fendler. 2003. Preparation and structural properties of tin oxide-montmorillonite nanocomposites. Langmuir 19 3762-3769. 

Chen, P., and Zhang, L. (2006). Interaction and properties of highly exfoliated soy protein/ montmorillonite nanocomposites. Biomacromolecules, 1, 1700-1706. 

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