中空SiO_2微球及聚丙烯酸酯/中空SiO_2复合乳液的研究
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摘要
采用乳液聚合法合成聚苯乙烯微球,将其作为模板,以正硅酸乙酯和乙烯基三乙氧基硅烷为硅源,制备中空SiO2微球.采用透射电子显微镜对中空SiO2微球的形貌进行表征,并对中空SiO2微球的制备工艺进行优化.然后,采用原位乳液聚合法制备了聚丙烯酸酯/中空SiO2复合乳液.对加入中空SiO2微球前后乳液涂膜各项性能进行了测试,结果表明,中空SiO2微球可以显著提高聚丙烯酸酯乳液涂膜的透水汽性、耐水性和抗张强度,但断裂伸长率有所降低.
Polystyrene(PS)spheres were first synthesized by emulsion polymerization,and hollow silica spheres were prepared using PS spheres as templates,ethyl orthosilicate and vinyl triethoxysilane as the silicon sources.The morphology of hollow silica spheres were characterized by transmission electron microscopy,and the preparation process of them were optimized.Then polyacrylate/hollow silica composite emulsion was synthesized by in-situ emulsion polymerization.Performance testing for polyacrylate film and polyacrylate/hollow silica composite film were carried out,and the results showed that the hollow SiO2 spheres can significantly improve the water vapor permeability,water resistance and tensile strength of polyacrylate film,but decrease its elongation at break.
Polystyrene(PS)spheres were first synthesized by emulsion polymerization,and hollow silica spheres were prepared using PS spheres as templates,ethyl orthosilicate and vinyl triethoxysilane as the silicon sources.The morphology of hollow silica spheres were characterized by transmission electron microscopy,and the preparation process of them were optimized.Then polyacrylate/hollow silica composite emulsion was synthesized by in-situ emulsion polymerization.Performance testing for polyacrylate film and polyacrylate/hollow silica composite film were carried out,and the results showed that the hollow SiO2 spheres can significantly improve the water vapor permeability,water resistance and tensile strength of polyacrylate film,but decrease its elongation at break.
引文
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[11]Bao Y,Yang Y Q,Ma J Z.Fabrication of monodisperse hollow silica spheres and effect on water vapor permeability of polyacrylate membrane[J].Journal of Colloid and Interface Science,2013,407:155-163.
[12]Leng W G,Chen M,Zhou S X,et al.Capillary force induced formation of monodisperse polystyrene/silica organic-inorganic hybrid hollow spheres[J].Langmuir,2010,26(17):14 271-14 275.
[2]郑新建,马建中,胡静.纳米材料改性丙烯酸树脂的研究进展[J].皮革与化工,2008,25(1):56-58.
[3]胡静,马建中,刘凌云,等.丙烯酸树脂/纳米SiO2复合涂饰剂的合成与应用研究[J].中国皮革,2005,13(1):99-101.
[4]张志杰,马建中,胡静,等.原位生成纳米SiO2/丙烯酸树脂皮革涂饰剂的研究[J].精细化工,2006,23(11):1 112-1 117.
[5]马建中,刘凌云,张志杰.纳米二氧化硅改性丙烯酸树脂的研究[J].中国皮革,2004,33(9):31-35.
[6]Chen J F,Ding H M,Wang J X,et al.Preparation and characterization of porous hollow silica nanoparticles for drug delivery application[J].Biomaterials,2004,25(4):723-727.
[7]Marinakos S M,Anderson M F,Ryan J A,et al.Encapsulation,permeability,and cellular up take characteristics of hollow nanometer sized conductive polymer capsules[J].Journal of Physical Chemistry B,2001,105:8 872-8 876.
[8]Chen J F,Wang J X,Liu R J,et al.Synthesis of porous silica structures with hollow interiors by templating nano sized calcium carbonate[J].Inorganic Chemistry Communications,2004(7):447-449.
[9]冯雪风,金卫根,杨婥.介孔中空二氧化硅微球制备及吸附缓释性能研究[J].无机盐工业,2009,41(9):18-20.
[10]冯雪风,金卫根,刘芬,等.介孔中空二氧化硅及硅基微球制备研究进展[J].无机盐工业,2008,40(12):12-14.
[11]Bao Y,Yang Y Q,Ma J Z.Fabrication of monodisperse hollow silica spheres and effect on water vapor permeability of polyacrylate membrane[J].Journal of Colloid and Interface Science,2013,407:155-163.
[12]Leng W G,Chen M,Zhou S X,et al.Capillary force induced formation of monodisperse polystyrene/silica organic-inorganic hybrid hollow spheres[J].Langmuir,2010,26(17):14 271-14 275.