Abstract
Composites consisting of carbopol (CP) and ceramic titanium dioxide nanoparticles, TiO2 have been investigated. The CP-TiO2, organic-inorganic hybrid composites have been prepared in DMF by heating the mixture with a constant rate of 1。C/min, up to 30。C, 45。C, 60。C, 80。C, 100。C and 120。C. Proprieties such as absorption, structure and external aspect of the obtained materials were investigated by Uv-vis, FTIR, DRX and SEM analyses. The X-ray diffraction patterns confirmed that the TiO2 nanoparticles maintained their original tetragonal anatase-type crystalline structure in the composites. The chemical structure of the obtained materials was determined by ATR-FTIR spectroscopy. The influence of TiO2 nanoparticles on the thermal proprieties of carbopol matrix was investigated using thermo-gravimetric analysis and differential scanning calorimetry. The glass transition temperature (Tg) of the carbopol matrix was considerably increased by the presence of ceramic feller nanoparticles and its thermal stability was significantly improved. Furthermore the water loss which represents 7.56% of the weight loss in pure CP at 100。C was avoided in the CP-TiO2 nanocomposites at this same temperature. This important finding revealed that ceramic fellers blocked the water loss in the modified carbopol nanocomposites, which stayed stable till 200。C.
Highlights
Hybrid organic-inorganic materials have been widely studied in the last decade [1]-[3] and polymer matrix-ce-How to cite this paper: Chalal, S., Haddadine, N., Bouslah, N., Souilah, S., Benaboura, A., Barille, R. and Haroun, A. (2014) Preparation Characterization and Thermal Behaviour of Carbopol-TiO2 Nanocomposites
On the basis of this consideration we report in the present work a convenient manner to prepare carbopolTiO2 nanocomposites using a heating process
The titanium dioxide with a globular structure and a high homogeneity and surface area are clearly visible as a small spots which adhered to the CP matrix, probably due to the hydrophilic propriety of TiO2 and the strong affinity between the later and the carboxylic groups of the carbopol. 3.2
Summary
Hybrid organic-inorganic materials have been widely studied in the last decade [1]-[3] and polymer matrix-ce-. It is well known that hybrid materials have high thermal and chemical stabilities, long life and appreciable proprieties in their different applications. We can consider that the incorporation of inorganic nanoparticles into polymer matrix can considerably affect the proprieties of the matrix. These hybrid materials are mixture of organic and inorganic groups at a molecular level this is why their proprieties became dependent on both organic and inorganic parts. Titanium dioxide TiO2 is an inexpensive, non toxic compound with remarkable optical and electrical proprieties [10]-[12] This is why it has been the subject of the interest of many researchers, who spent a great deal of effort to realize useful materials for industrial application. The influence of the TiO2 nanoparticles on the thermal proprieties of carbopol matrix was investigated using thermo-gravimetric analysis, TGA and differential scanning calorimetry DSC
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