Facile fabrication of superhydrophobic raspberry‐like SIO2/polystyrene composite particles
Facile fabrication of superhydrophobic raspberry‐like SIO2/polystyrene composite particles
复制标题
DOI：
10.1002/pc.22376
复制
发表时间：
2013
影响因子：
5.2
通讯作者：
Q. Shang;Mengyu Wang;Hu Liu;Lijing Gao;G. Xiao
中科院分区：
文献类型：
--
作者：
Q. Shang;Mengyu Wang;Hu Liu;Lijing Gao;G. Xiao
以乙烯基三乙氧基硅烷为前驱体，采用溶胶-凝胶法一步法制备了乙烯基官能化二氧化硅粒子，采用乳液聚合法制备了树莓状二氧化硅/聚苯乙烯复合粒子。以亚微米级的乙烯基二氧化硅粒子为核，在聚合过程中将纳米PS粒子吸附在乙烯基二氧化硅粒子上，形成覆盆子状复合粒子。用热重分析、核磁共振、傅里叶变换红外光谱、透射电子显微镜和扫描电子显微镜对乙烯基二氧化硅粒子和二氧化硅/聚苯乙烯杂化粒子的组成、形态和结构进行了表征。通过在玻璃基板上直接沉积覆盆子状的SiO_2/PS复合粒子，可以构建超疏水表面，并可通过调节苯乙烯/SiO_2的重量比来调节水接触角。此外，超疏水薄膜具有很强的粘附力，即使在薄膜颠倒的情况下也能将水滴钉在表面。波兰姆。公司，2013年。2012美国塑料工程师学会
A facile and novel strategy was reported on the fabrication of raspberry-like SiO2/polystyrene (SiO2/PS) composite particles by emulsion polymerization in the presence of vinyl-functionalized silica (vinyl-SiO2) particles, which were prepared via a one-step sol–gel process using vinyltriethoxysilane as the precursor. The submicron vinyl-SiO2 particles were used as the core, and nanosized PS particles were then adsorbed onto the vinyl-SiO2 particles to form raspberry-like composite particles during the polymerization process. The composition, morphology, and structure of the vinyl-SiO2 particles and the SiO2/PS hybrid particles were characterized by thermogravimetric analysis, nuclear magnetic resonance, Fourier transform infrared spectroscopy, transmission electron microscopy, and scanning electron microscopy. Superhydrophobic surface can be constructed by directly depositing the raspberry-like SiO2/PS composite particles on glass substrate, and the water contact angle can be adjusted by the styrene/SiO2 weight ratio. In addition, the superhydrophobic film possessed a strong adhesive force to pin water droplet on the surface even when the film was turned upside down. POLYM. COMPOS., 2013. © 2012 Society of Plastics Engineers