Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611, United States.
Langmuir. 2011 Nov 15;27(22):13754-61. doi: 10.1021/la202225g. Epub 2011 Oct 19.
A thiol-ene polymerization was accomplished on silicate glass slides to graft a series of homopolymers and copolymers using 3-(mercaptopropyl)trimethoxysilane (MTS) as both a silane coupling agent and initiator. MTS was initially covalently bonded to an acid cleaned glass surface via a classical sol-gel reaction. Poly(acrylic acid) (PAA), poly(acrylamide) (PAAm), poly(methyl acrylate) (PMA), poly(acrylamido-2-methyl-propanesulfonic acid) (PAMPS), and the copolymer poly(AA-co-AAm-co-MA-co-AMPS) were grafted from the thiol group of MTS. The surface chemistry of the MTS modified slides and polymer grafts was characterized with attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS). Surface texture was evaluated with tapping mode atomic force microscopy (TM-AFM). The Owens-Wendt-Kaelble (OWK) and Lifshitz-van der Waals acid-base (LW-AB) methods were used to evaluate surface energies by sessile drop contact angle method. The synthetic approach demonstrated a facile, rapid method for grafting to glass surfaces.
采用 3-(巯丙基)三甲氧基硅烷 (MTS) 作为硅烷偶联剂和引发剂，在硅酸盐玻片上进行硫醇-烯聚合，接枝一系列均聚物和共聚物。MTS 最初通过经典的溶胶-凝胶反应共价键合到酸清洗过的玻璃表面。聚丙烯酸 (PAA)、聚丙烯酰胺 (PAAm)、聚甲基丙烯酸酯 (PMA)、聚(丙烯酰胺-2-甲基丙磺酸) (PAMPS) 和共聚物聚(AA-co-AAm-co-MA-co-AMPS) 从 MTS 的巯基接枝。用衰减全反射傅里叶变换红外 (ATR-FTIR) 光谱和 X 射线光电子能谱 (XPS) 对 MTS 修饰玻片和聚合物接枝的表面化学进行了表征。采用原子力显微镜 (TM-AFM) 的轻敲模式评估表面纹理。采用 Owens-Wendt-Kaelble (OWK) 和 Lifshitz-van der Waals 酸碱 (LW-AB) 方法通过悬滴接触角法评估表面能。该合成方法为玻璃表面接枝提供了一种简便、快速的方法。
