SiO_2离子纳米粒子/聚苯硫醚复合材料的性能
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摘要
以纳米SiO_2为核,通过表面接枝3-(三甲氧基硅丙基)二甲基十八烷基氯化铵,然后与壬基酚聚氧乙烯醚磺酸钠进行离子交换反应,得到室温可流动SiO_2离子纳米粒子。将粒子作为填料与聚苯硫醚(PPS)共混制备复合材料。透射电镜结果表明7%(质量分数)填充量时粒子均匀分散在PPS基体中;力学测试表明粒子能够提高PPS的断裂伸长率,7%填充量时弹性模量最大;断面扫描电镜结果表明SiO_2离子纳米粒子通过其表面有机长链离子聚合物与PPS基体相互作用能够提高材料的韧性。热重分析结果表明10%填充量能够降低复合材料的初始热分解温度,这可能与填充量高时,表面柔性分子链降低聚合物分子链刚性所致。
In this paper,SiO_2 ion nanoparticles were fabricated via N,N-didecyl-N-methyl-N-(3-trimethoxysilylpropyl)ammonium chloride covalently grafted on the surface of SiO_2 nanoparticles as core,and then poly(ethylene glycol)4-nonylpheny 13-sulfopropyl ether sodium salt was grafted on the surface of SiO_2 nanoparticles through ion exchange reaction.The well-dispersed hybrid ion nanoparticles exhibit liquid-like behavior at room temperature.TEM result indicates that 7% loading nanoparticles disperse uniformly in polyphenylene sulfide(PPS)matrix.Mechanical tests show that SiO_2 ion nanoparticles can elevate the elongation rate of PPS,and elastics modulus reaches the maximum value when the content is 7%.SEM of fraction of PPS nanocomposites further confirms that surface organic long chain ion polymer can interact with PPS matrix to improve the toughness.TGA results manifest that 10%loading decreases the initial decomposition temperature of nanocomposites,which is ascribed to the surface soft polymer chain of SiO_2 which can reduce the rigidity of PPS molecule chains.
In this paper,SiO_2 ion nanoparticles were fabricated via N,N-didecyl-N-methyl-N-(3-trimethoxysilylpropyl)ammonium chloride covalently grafted on the surface of SiO_2 nanoparticles as core,and then poly(ethylene glycol)4-nonylpheny 13-sulfopropyl ether sodium salt was grafted on the surface of SiO_2 nanoparticles through ion exchange reaction.The well-dispersed hybrid ion nanoparticles exhibit liquid-like behavior at room temperature.TEM result indicates that 7% loading nanoparticles disperse uniformly in polyphenylene sulfide(PPS)matrix.Mechanical tests show that SiO_2 ion nanoparticles can elevate the elongation rate of PPS,and elastics modulus reaches the maximum value when the content is 7%.SEM of fraction of PPS nanocomposites further confirms that surface organic long chain ion polymer can interact with PPS matrix to improve the toughness.TGA results manifest that 10%loading decreases the initial decomposition temperature of nanocomposites,which is ascribed to the surface soft polymer chain of SiO_2 which can reduce the rigidity of PPS molecule chains.
引文
[1]Bourgeat-Lami E,Lang J.Encapsulation of inorganic particles by dispersion polymerization in polar media[J].J.Colloid Interface Sci.,1999,210:281-289.
[2]Bourgeat-Lami E,Lang J.Effect of silica size and concentration on the morphologyof silica-polystyrene composite particles[J].J.Colloid Interface Sci.,1999,201:281-289.
[3]Zhang S W,Zhou S X,Weng Y M,et al,Synthesis of SiO2/polystyrene nanocomposite particles via miniemulsion polymerization[J].Langmuir,2005,21:2124-2128.
[4]Chen M,Zhou S X,You B,et al.A novel preparation method of raspberry-like PMMA/SiO2hybrid microspheres[J].Macromolecules,2005,38:6411-6417.
[5]Qi D M,Bao Y Z,Huang Z M,et al.Preparation of acrylate polymer/silica nanocomposite particles with high silica encapsulation efficiency via miniemulsion polymerization[J].Polymer,2006,47:4622-4629.
[6]郑亚萍,樊文迪,杨睿璐,等.非单分散无溶剂纳米SiO2流体对环氧树脂的改性[J].复合材料学报,2014,31(5):1212-1218.Zheng Y P,Fan W D,Yang R L,et al.Modified epoxy with monodispersed solvent-free nanoSiO2fluid[J].Acta Materiae Sinica,2014,31(5):1212-1218.
[7]Zhang J X,Zheng Y P,Lan L,et al.The preparation of a silica nanoparticle hybrid ionic nanomaterial and its electrical properties[J].RSC Adv.,2013,3:16714-16719.
[8]崔晓莉,江志裕.交流阻抗谱的表示及应用[J].上海师范大学学报(自然科学版),2001,30(4):53-61.Cui X L,Jiang Z Y.The plot formats and applications of electrochemical impedance spectroscopy[J].Journal of Shanghai Normal University(Natural Sciences),2001,30(4):53-61.
[9]陈体衔.实验电化学[M].厦门:厦门大学出版社,1993:174-195.
[10]邓友全.离子液体-性质、制备与应用[M].北京:中国石化出版社,2006:377-412.
[2]Bourgeat-Lami E,Lang J.Effect of silica size and concentration on the morphologyof silica-polystyrene composite particles[J].J.Colloid Interface Sci.,1999,201:281-289.
[3]Zhang S W,Zhou S X,Weng Y M,et al,Synthesis of SiO2/polystyrene nanocomposite particles via miniemulsion polymerization[J].Langmuir,2005,21:2124-2128.
[4]Chen M,Zhou S X,You B,et al.A novel preparation method of raspberry-like PMMA/SiO2hybrid microspheres[J].Macromolecules,2005,38:6411-6417.
[5]Qi D M,Bao Y Z,Huang Z M,et al.Preparation of acrylate polymer/silica nanocomposite particles with high silica encapsulation efficiency via miniemulsion polymerization[J].Polymer,2006,47:4622-4629.
[6]郑亚萍,樊文迪,杨睿璐,等.非单分散无溶剂纳米SiO2流体对环氧树脂的改性[J].复合材料学报,2014,31(5):1212-1218.Zheng Y P,Fan W D,Yang R L,et al.Modified epoxy with monodispersed solvent-free nanoSiO2fluid[J].Acta Materiae Sinica,2014,31(5):1212-1218.
[7]Zhang J X,Zheng Y P,Lan L,et al.The preparation of a silica nanoparticle hybrid ionic nanomaterial and its electrical properties[J].RSC Adv.,2013,3:16714-16719.
[8]崔晓莉,江志裕.交流阻抗谱的表示及应用[J].上海师范大学学报(自然科学版),2001,30(4):53-61.Cui X L,Jiang Z Y.The plot formats and applications of electrochemical impedance spectroscopy[J].Journal of Shanghai Normal University(Natural Sciences),2001,30(4):53-61.
[9]陈体衔.实验电化学[M].厦门:厦门大学出版社,1993:174-195.
[10]邓友全.离子液体-性质、制备与应用[M].北京:中国石化出版社,2006:377-412.