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首页> 外文期刊>Polymer: The International Journal for the Science and Technology of Polymers >Application of thermo-responsive poly(methyl vinyl ether)containing copolymers in combination with ultrasonic treatment for pigment surface modification in pigment dispersions
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Application of thermo-responsive poly(methyl vinyl ether)containing copolymers in combination with ultrasonic treatment for pigment surface modification in pigment dispersions

机译：热响应性含（甲基乙烯基醚）共聚物与超声处理相结合在颜料分散体中进行颜料表面改性的应用

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摘要

The process of surface modification of hydrophobic organic(copper phthalocyanine(CuPc))as well as hydrophilic inorganic pigments(titanium dioxide)in aqueous dispersions by employing tailor-made thermo-responsive copolymers and the colloidal stability have been studied as a function of temperature.The pigment surface modification is achieved by conventional adsorption and by thermoprecipitation of amphiphilic methyl vinyl ether(MVE)containing block and graft copolymers,exhibiting a lower critical solution temperature(LCST),with poly(isobutyl vinyl ether)blocks and poly(ethylene oxide)side chains,respectively.The effect of mechanical treatment of the pigment dispersion by ultrasonic power alone or in combination with the LCST property was investigated.The course of the pigment surface coating process was followed by the electrokinetic sonic amplitude(ESA)method.The temperature-controlled sorption of PMVE-g-PEO graft copolymers on both inorganic and organic pigment surfaces was investigated.It was found that ultrasonic treatment together with LCST thermoprecipitation is a promising method for the surface modification of pigments with regard to dispersion stability.
机译：通过量身定制的热响应共聚物对疏水性有机铜酞菁铜和亲水性无机颜料二氧化钛进行表面改性，研究了胶体稳定性随温度的变化。颜料的表面改性可通过常规吸附和通过热沉淀含两亲性甲基乙烯基醚（MVE）的嵌段共聚物和接枝共聚物来实现，其具有较低的临界溶液温度（LCST），并带有聚（异丁基乙烯基醚）嵌段和聚环氧乙烷分别研究了超声功率或结合LCST性能对颜料分散体进行机械处理的效果。在颜料表面涂覆过程中遵循电动声幅（ESA）方法。研究了PMVE-g-PEO接枝共聚物在无机和有机颜料表面上的可控吸附发现，在分散稳定性方面，超声处理与LCST热沉淀相结合是一种用于颜料表面改性的有前途的方法。

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