Nanocomposites of styrene-butadiene rubber and synthetic anatase obtained by a colloidal route and their photooxidation Export

@article{2009ArantesJApplPolSc, abstract = {Photodegradable styrene-butadiene rubber (SBR)/TiO2 nanocomposites were prepared by a colloidal route through the simple mixing of a commercial polymer latex and synthetic anatase nanoparticles. Stable colloids of pure anatase TiO2 nanoparticles with an average diameter of 7 nm were prepared by a solvothermal route from the hydrolysis of titanium alkoxide by hydrogen peroxide in the presence of oleic acid. The photocatalytic degradation of the SBR-TiO2 nanocomposites was carried out in ambient air at room temperature under a UV lamp and was monitored by Fourier transform infrared and UV-visible spectroscopies and differential scanning calorimetry. The results show that the SBR-TiO2 nanocomposites were photocatalytically degraded under UV light, which indicate that the butadiene chains in the nanocomposite were oxidized during UV irradiation. Thermal analysis measurements indicated that crosslinking reactions occurred. The presence of anatase TiO2 nanoparticles was found to accelerate the photocatalytic process, and the degradation mechanism was similar to that of the pure SBR polymer. {\copyright} 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009}, address = {LIEC-Interdisciplinary Laboratory of Electrochemistry and Ceramics, Department of Chemistry, UFSCar-Federal University of S\~{a}o Carlos. Rod. Washington Luis km 235, CP 676, S\~{a}o Carlos 13565-905, SP, Brazil; Chemistry Institute of Araraquara, UNESP-S\~{a}o Paulo State University, Rua Francisco Degni, CP 355, Araraquara 14801-907, SP, Brazil}, author = {Arantes, Tatiane M. and Leite, Edson R. and Longo, Elson and Camargo, Emerson R.}, citeulike-article-id = {5435266}, citeulike-linkout-0 = {http://dx.doi.org/10.1002/app.30144}, citeulike-linkout-1 = {http://www3.interscience.wiley.com/cgi-bin/abstract/122325484/ABSTRACT}, doi = {10.1002/app.30144}, issn = {1097-4628}, journal = {Journal of Applied Polymer Science}, keywords = {colloids, degradation, elastomers, nanocomposites, rubber, tio2}, number = {3}, pages = {1898--1904}, posted-at = {2009-08-14 08:36:50}, priority = {2}, title = {Nanocomposites of styrene-butadiene rubber and synthetic anatase obtained by a colloidal route and their photooxidation}, url = {http://dx.doi.org/10.1002/app.30144}, volume = {113}, year = {2009} }

TY - JOUR ID - 2009ArantesJApplPolSc L3 - citeulike-article-id:5435266 N2 - Photodegradable styrene-butadiene rubber (SBR)/TiO2 nanocomposites were prepared by a colloidal route through the simple mixing of a commercial polymer latex and synthetic anatase nanoparticles. Stable colloids of pure anatase TiO2 nanoparticles with an average diameter of 7 nm were prepared by a solvothermal route from the hydrolysis of titanium alkoxide by hydrogen peroxide in the presence of oleic acid. The photocatalytic degradation of the SBR-TiO2 nanocomposites was carried out in ambient air at room temperature under a UV lamp and was monitored by Fourier transform infrared and UV-visible spectroscopies and differential scanning calorimetry. The results show that the SBR-TiO2 nanocomposites were photocatalytically degraded under UV light, which indicate that the butadiene chains in the nanocomposite were oxidized during UV irradiation. Thermal analysis measurements indicated that crosslinking reactions occurred. The presence of anatase TiO2 nanoparticles was found to accelerate the photocatalytic process, and the degradation mechanism was similar to that of the pure SBR polymer. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009 IS - 3 JF - Journal of Applied Polymer Science SN - 1097-4628 AD - LIEC-Interdisciplinary Laboratory of Electrochemistry and Ceramics, Department of Chemistry, UFSCar-Federal University of São Carlos. Rod. Washington Luis km 235, CP 676, São Carlos 13565-905, SP, Brazil; Chemistry Institute of Araraquara, UNESP-São Paulo State University, Rua Francisco Degni, CP 355, Araraquara 14801-907, SP, Brazil EP - 1904 TI - Nanocomposites of styrene-butadiene rubber and synthetic anatase obtained by a colloidal route and their photooxidation VL - 113 SP - 1898 KW - colloids KW - degradation KW - elastomers KW - nanocomposites KW - rubber KW - tio2 AU - Arantes, Tatiane AU - Leite, Edson AU - Longo, Elson AU - Camargo, Emerson PY - 2009/// UR - http://dx.doi.org/10.1002/app.30144 ER -