机械力化学法制备GMA改性二氧化硅及其性能研究
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摘要
文章通过机械力化学法,在有GMA存在的体系中球磨二氧化硅,制备GMA改性二氧化硅杂化粒子。结果表明:制备的杂化粒子甲醇值能达到59.28,具有很好的疏水性;在TEM电镜观察下,经过改性的SiO_2表面包覆了一层有机物,通过红外光谱分析可知在球磨过程中GMA酯键断裂生成甲基丙烯酸,而拉曼光谱显示杂化粒子中存在Si-C键,这表明在机械力作用下,甲基丙烯酸成功接枝到二氧化硅表面,通过热重分析测得接枝率为1.7%。
In the paper, the GMA modified silica hybrid particles was prepared by Mechanochemical method which means that use the ball mill to grind the silica in the GMA system. The results shows that the highest methanol value of hybrid particle can reach 59.28, which Indicates that it has a very good hydrophobicity. And we can observe that the surface of the modified SiO_2 coated with a layer of organic matter under the TEM. In IR, we can know that methacrylic acid was prepared due to the breaking of ester bond in GMA molecule. And in Roman, we found that there are Si-C bonds on the surface of the modified SiO_2 which indicates that methacrylic acid is successfully grafted to the surface of silica under mechanical force. The grafting rate was 1.7 % measured by thermogravimetric analysis.
In the paper, the GMA modified silica hybrid particles was prepared by Mechanochemical method which means that use the ball mill to grind the silica in the GMA system. The results shows that the highest methanol value of hybrid particle can reach 59.28, which Indicates that it has a very good hydrophobicity. And we can observe that the surface of the modified SiO_2 coated with a layer of organic matter under the TEM. In IR, we can know that methacrylic acid was prepared due to the breaking of ester bond in GMA molecule. And in Roman, we found that there are Si-C bonds on the surface of the modified SiO_2 which indicates that methacrylic acid is successfully grafted to the surface of silica under mechanical force. The grafting rate was 1.7 % measured by thermogravimetric analysis.
引文
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[22]Luigi Vertuccio,Giuliana Gorrasi,Andrea Sorrentino,et al.Nano clay reinforced PCL/starch blends obtained by high energy ball milling[J].Carbohydrate Polymers,2009,75:172-179.
[2]袁清峰,高延敏,吕伟刚.KH-550改性纳米Si O2对环氧胶黏剂性能的影响[J].化学与黏合,2009.31(3):26-28.
[3]李鑫,赵凤起,樊学忠,等.聚合物对微/纳米铝粉表面包覆改性的研究进展[J].中国表面工程,2013,26(2):6-13.
[4]毋伟,陈建峰,邵磊,等.聚合物接枝改性超细二氧化硅表面状况及形成机理[J].北京化工大学学报(自然科学版),2003,02:1-4.
[5]吴庆美.机械化学改性Ca CO3填充PVC的性能研究[D].大连交通大学,2007.
[6]Gun'Ko V M,Voronin E F,Pakhlov E M,et al.Features of fumed silica coverage with silanes having three or two groups reacting with the surface[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,2000,166(1):187-201.
[7]Qingqing Zhang,Feng Gao,Chaochao Zhang,et al.Enhanced dielectric tunability of Ba0.6Sr0.4Ti O3/Poly(vinylidene fluoride)composites via interface modification by silane coupling agent[J].Composites Science and Technology,2016,129:93-100.
[8]Feng Yongbao,Qiu Tai,Zhang Jun,et al.Effects of silane coupling agent on microstructure and mechanical properties of EPDM/carbonyl iron microwave absorbing patch[J].Journal of Wuhan University of Technology-Mater Sci Ed,2006,21(4):78-82.
[9]宋丽岑,赵娟,杨明,等.硅烷偶联剂表面改性Si C粉体及其浆料流变性能[J].中国粉体技术,2015,21(6):88-90.
[10]龙复,王玮,许涌深,等.无机溶胶粒子的有机高分子胶囊化研究[J].高分子材料科学与工程,1991,7(6):13-16.
[11]李森,程江,文秀芳,等.聚合物包覆改性纳米二氧化钛的研究进展[J].日用化学工业,2007,37(2):116-119+124.
[12]陆铭,王婷,贾昧,等.白炭黑包覆改性技术研究进展[J].轮胎工业,2010,30(11):647-650.
[13]Asok Kumar Dikshit.Rheological Behaviours of Polyimide Precursor in Organic Solvents for Coating on Silica Optical Fibre[J].Polymer-Plastics Technology and Engineering,2012,51(7):707-715.
[14]Wang QH,Luo YY,Feng CF,et al.Nanomater,2012.
[15]Yagoub Mansoori,Khadijeh Roojaei,Mohammad Reza Zamanloo,et al.Polymer-clay nanocomposites:chemical grafting of polystyrene onto Cloisite 20A[J].Chinese Journal of Polymer Science,2012,30(6):815-823.
[16]Yanyan Zhang,Baojiao Gao.Preparation of Functional Grafted Particles PVA/Si O2 with High Grafting Degree and Preliminary Research of Their Adsorption Character[J].Journal of Macromolecular Science,Part A,2013,50(2):238-247.
[17]张华,李巧玲,张淑敏,等.聚丙烯酰胺接枝改性Ti O2粉体及其性能[J].中国粉体技术,2014.20(1):47-50.
[18]季燕,陈洪龄,张渝.MASC-Si O2杂化颗粒的制备,表征与分散性能[J].中国粉体技术,2013,19(3):30-34.
[19]谢超,吴三琴,张泽朋.机械力化学法制备有机改性蒙脱石粉体[J].中国粉体技术,2013,19(3):7-12.
[20]Martínez-Gallegos S,Herrero M,Barrigab C,et al.Dispersion of layered double hydroxides in poly(ethylene terephthalate)by in situ polymerization and mechanical grinding[J].Applied Clay Science,2009,45:44-49.
[21]Loredana Tammaro,Vittoria Vittoria,Valeria Bugatti.Dispersion of modified layered double hydroxides in Poly(ethylene terephthalate)by High Energy Ball Milling for food packaging applications[J].European Polymer Journal,2014,52:172-180.
[22]Luigi Vertuccio,Giuliana Gorrasi,Andrea Sorrentino,et al.Nano clay reinforced PCL/starch blends obtained by high energy ball milling[J].Carbohydrate Polymers,2009,75:172-179.