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首页> 外文期刊>Journal of Applied Polymer Science >Investigation of the rheological behavior of titanium dioxide pigmented acrylonitrile-butadiene-styrene polymer
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Investigation of the rheological behavior of titanium dioxide pigmented acrylonitrile-butadiene-styrene polymer

机译：二氧化钛颜料丙烯腈-丁二烯-苯乙烯聚合物的流变行为研究

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摘要

Titanium dioxide (TiO _2) pigments may be surface-modified by hydrous oxides, such as alumina (e.g., Cristal 134) or by organic compounds, such as organophosphate (e.g., Tiona 188). In this investigation, the effects of these pigments on the rheological properties of acrylonitrile-butadiene-styrene (ABS) polymer were investigated. With the oscillatory rheometry method in the linear viscoelastic region, the storage and loss moduli versus frequency graph of ABS in the molten state showed two crossover points (COPs) when the surface of the ABS components, that is, poly(styrene-stat-acrylonitrile) and poly[(styrene-stat-acrylonitrile)-graft-polybutadiene] or g-ABS, had good interaction. The first COPs increased when the TiO _2 content rose to 0.5 and 1.5% in Tiona 188 and Cristal 134 pigmented ABS samples, respectively. With the addition of TiO _2 up to these contents, the polymer-pigment interaction becomes stronger so that the dispersion of the pigments was good. With increasing TiO _2, the first COPs dramatically decreased because of agglomeration of the pigments. The shifting of the first COP may be applied as a criterion to specify the dispersion of TiO _2 particles in the ABS matrix. Scanning electron micrographs showed that the pigments had no effect on the size of the polybutadiene particles. Also, transmission electron micrographs proved that agglomerates of Tiona 188 and Cristal 134 particles were formed above 0.5 and 1.5% TiO _2 contents, respectively.
机译：二氧化钛（TiO _2）颜料可通过含水氧化物例如氧化铝（例如Cristal 134）或通过有机化合物例如有机磷酸酯（例如Tiona 188）进行表面改性。在这项研究中，研究了这些颜料对丙烯腈-丁二烯-苯乙烯（ABS）聚合物流变性能的影响。使用线性粘弹性区的振荡流变法，当ABS组分的表面即聚苯乙烯-静态-丙烯腈表面时，熔融状态下ABS的储能模量与损耗模量-频率图显示两个交点（COPs）。 ）和聚[（苯乙烯-苯乙烯-丙烯腈）-接枝聚丁二烯]或g-ABS具有良好的相互作用。当Tiona 188和Cristal 134着色ABS样品中的TiO _2含量分别增加到0.5％和1.5％时，第一COP升高。通过添加不超过这些含量的TiO _2，聚合物与颜料的相互作用变得更强，因此颜料的分散性良好。随着TiO _2的增加，由于颜料的团聚，第一COP急剧下降。可以将第一COP的移动用作确定TiO _2颗粒在ABS基质中的分散性的标准。扫描电子显微镜照片显示，颜料对聚丁二烯颗粒的尺寸没有影响。另外，透射电子显微照片证明，TiO 2含量分别在0.5％和1.5％以上时，形成了Tiona 188和Cristal 134颗粒的附聚物。

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