Abstract
Hydroxyl silicone oil was successfully grafted to the styrene(St)-butyl acrylate(BA) copolymer chain by reacting with functional monomer, γ-propylmethacrylate trimethoxysilicane (PMTS), using the traditional emulsion polymerization method. The surface and interface composition, hydrophobic property, water repellent property and glass transition temperature (T g) of the silicone-modified St-BA copolymer films were investigated by Fourier transform infrared spectrometer coupled with attenuated total reflectance (FTIR-ATR), optical contact angle measurement 15 (OCA-15), weight of water absorption method and differential scanning calorimeter (DSC). FTIR-ATR spectra show that the silicone-modified St-BA copolymer films are rich in silicone units or segments at their surfaces compared with those in bulk and at interface, and have good hydrophobic properties. High drying temperature can more effectively increase silicone concentration at the surface, contact angle and hydrophobic properties of polymer films than extending drying time. Introduction of hydroxyl silicone oil or γ-propylmethacrylate triethoxysilicane (PMTS) can increase the T g of copolymer.
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