Synthesis and Characterization of PVA/MMT Porous Nanocomposite Prepared by Directional Freeze-Drying Method

Abstract:

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Porous PVA/MMT nanocomposites, which included a great deal of macroporous, mesoporous and a few micorporous were fabricated by directional freezing and freeze-drying. X-ray diffraction (XRD), Scan Electric Microscope (SEM), Fourier Transform Infrared (FT-IR) spectroscopy, and Thermo gravimetric-differential scanning calorimeter analysis (TG-DSC) were used characterize the samples. Results showed that the morphology and the interactions between MMT and PVA of the obtained porous nanocomposites were influenced by nanoparticle size, colloid concentration , aging time etc.O-H bond in PVA and Si-O bond in MMT, "acetate" in PVA and O-H bond in particle flat of MMT which occurred coupling constituted hydrogen bonding which enhanced the driving power to help PVA molecules insert into interlayer spaces of MMT.

Info:

Periodical:

Advanced Materials Research (Volumes 197-198)

Edited by:

Huaiying Zhou, Tianlong Gu, Daoguo Yang, Zhengyi Jiang, Jianmin Zeng

Pages:

253-260

DOI:

10.4028/www.scientific.net/AMR.197-198.253

Citation:

K. Yang et al., "Synthesis and Characterization of PVA/MMT Porous Nanocomposite Prepared by Directional Freeze-Drying Method", Advanced Materials Research, Vols. 197-198, pp. 253-260, 2011

Online since:

February 2011

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Price:

$35.00

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