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Effect of surface modification of titanium dioxide on the UV‐C aging behavior of silicone rubber
Author(s) -
Zhang Hui,
Yang Hao,
Shentu Baoqing
Publication year - 2019
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.47170
Subject(s) - materials science , surface modification , titanium dioxide , triethoxysilane , thermal stability , chemical engineering , silicone rubber , silane , dispersion (optics) , fourier transform infrared spectroscopy , ultimate tensile strength , composite material , polymer chemistry , physics , optics , engineering
Surface modification of titanium dioxide (TiO 2 ) nanoparticles (NPs) by silane coupling agents and the ultraviolet‐C (UV‐C) aging behavior of silicone rubber (SiR) incorporated with the modified TiO 2 NPs were investigated in this work. The SiR samples incorporated with TiO 2 NPs displayed excellent stability against the UV‐C radiation. In order to improve the dispersion of TiO 2 NPs in the SiR matrix, the surface of TiO 2 NPs was modified with 3‐aminopropyl triethoxysilane and 3‐trimethoxysilyl propyl methacrylate, respectively. The surface modification of TiO 2 NPs was characterized by thermal gravimetric analysis and Fourier transform infrared spectroscopy. The dispersion stability of the pristine TiO 2 NPs and surface silane‐modified TiO 2 NPs was evaluated in an organic solvent (toluene). Effect of surface modified TiO 2 NPs on the UV‐C aging behavior of SiR was evaluated in terms of the change of surface morphology, tensile properties, hardness, crosslinking density, and surface microstructure before and after the UV‐C aging. The results showed that surface modification of TiO 2 NPs with silane coupling agents could improve the dispersion of TiO 2 NPs in the SiR matrix. Moreover, the SiR with modified TiO 2 NPs showed an improved aging resistance to the UV‐C radiation, compared with the samples with pristine TiO 2 NPs. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47170.