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首页> 外文期刊>Journal of Applied Polymer Science >Functional polymers for colloidal applications. XIV. Syntheses of styrene-maleic anhydride copolymers with different charges and their ability to disperse kaolinite particles
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Functional polymers for colloidal applications. XIV. Syntheses of styrene-maleic anhydride copolymers with different charges and their ability to disperse kaolinite particles

机译：用于胶体应用的功能性聚合物。十四。具有不同电荷的苯乙烯-马来酸酐共聚物的合成及其分散高岭土颗粒的能力

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摘要

Four kinds of styrene/maleic-anhydride (SMA) copolymer-derived dispersants with different charged forms were synthesized and characterized with H-1-NMR. These four different dispersants contained carboxylic acid groups and exhibited characteristics indicative of anionic, cationic, zwitterionic, or nonionic surfactants as pH was changed. The charge properties of these copolymers changes with pH, and their ability to disperse clay particles under low and high pH were assessed by measuring viscosity or sedimentation, as well as Scanning Electron Microscopy (SEM). The results showed that the dispersing abilities are functions of pH of the system. It was found that SMA-N [Poly(styrene-co-beta-N,N-dimethylpropylamino) maleic acid, sodium salt)] exhibits the best dispersing ability, the fastest rate of sedimentation, and the smallest sedimentation volume at pH = 2, and SMA-Na [poly(styrene-co-maleic acid, disodium salt)] exhibits the better dispersing ability at pH = 7 and 12. In addition, the aggregation behavior of the dispersants characterized by fluorescence spectroscopy revealed that the degree of aggregation for all dispersants at high concentration increases in the order: SMA-Na < SMA-B [poly(styrene-co-B-imino-propyl-N-trimethylammonium acetate) maleic acid, disodium salt)] < SMA-N < SMA-Q [poly(styrene-co-beta-imino-propyl-N-trimethylammonium sulfate) maleic acid, sodium salt)]. (C) 2000 John Wiley & Sons, Inc. [References: 14]
机译：合成了四种带电荷形式的苯乙烯/马来酸酐（SMA）共聚物分散剂，并用H-1-NMR表征。这四种不同的分散剂均包含羧酸基团，并且随着pH的变化而显示出指示阴离子，阳离子，两性离子或非离子表面活性剂的特性。这些共聚物的电荷性质随pH的变化而变化，并且通过测量粘度或沉降以及扫描电子显微镜（SEM）评估了它们在低pH和高pH下分散粘土颗粒的能力。结果表明，分散能力是体系pH的函数。发现SMA-N [聚（苯乙烯-共-β-N，N-二甲基丙基氨基）马来酸，钠盐）在pH = 2时表现出最佳的分散能力，最快的沉淀速率和最小的沉淀体积，和SMA-Na [聚（苯乙烯-马来酸，二钠盐）]在pH = 7和12时表现出更好的分散能力。此外，以荧光光谱为特征的分散剂的聚集行为表明聚集程度所有分散剂在高浓度下按以下顺序增加：SMA-Na

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