Fabrication of Triacetylcellulose−SiO2 Nanocomposites by Surface Modification of Silica Nanoparticles

We have successfully fabricated triacetylcellulose (TAC) polymer−silica nanocomposite films having up to 40 wt % of incorporated silica nanoparticles by deliberately designing a surface ligand that has a structure similar to that of polymer repeating units and effectively modifying the surface of si...

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Bibliographic Details
Published in:Langmuir 2010-05, Vol.26 (10), p.7555-7560
Main Authors: Kim, Young-Jae, Ha, Shin-Woo, Jeon, Seung-Min, Yoo, Dong Woo, Chun, Sung-Ho, Sohn, Byeong-Hyeok, Lee, Jin-Kyu
Format: Article
Language:English
Subjects:
Cellulose - analogs & derivatives
Cellulose - chemistry
Materials: Nano-and Mesostructured Materials, Polymers, Gels, Liquid Crystals, Composites
Membranes, Artificial
Nanoparticles - chemistry
Particle Size
Silicon Dioxide - chemistry
Surface Properties
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Summary:We have successfully fabricated triacetylcellulose (TAC) polymer−silica nanocomposite films having up to 40 wt % of incorporated silica nanoparticles by deliberately designing a surface ligand that has a structure similar to that of polymer repeating units and effectively modifying the surface of silica nanoparticles through chemical bonding. Cross-sectional TEM analysis reveals no significant aggregation in all TAC−silica nanocomposite films. Thermal analysis results suggested that TAC−silica nanocomposites had higher T g and T c values as compared to pure TAC, and the increase in T g and T c was affected by the silica content. The transparency of all the nanocomposite films was over 80% in the visible range, confirming the excellent compatibility of nanoparticles with TAC. In this study, we enhance the interaction between nanoparticles and polymer matrices by modifying the surface of nanoparticles with a ligand that has a structure similar to that of polymer repeating units. It is expected that this method can be applied to other polymer systems to develop useful nanocomposites.
ISSN:0743-7463
1520-5827
DOI:10.1021/la904362x