Oxyethylated polypropylene glycols of various structures as surfactants for the synthesis of polystyrene and polymethyl methacrylate suspensions with a narrow particle size distribution

IF 1.7 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Russian Chemical Bulletin Pub Date : 2024-10-26 DOI:10.1007/s11172-024-4387-3

I. A. Gritskova, I. D. Kovtun, G. A. Romanenko, S. M. Levachev, S. A. Gusev, A. M. Shulgin, S. N. Chvalun

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Abstract

The colloidal-chemical properties of oxyethylated polypropylene glycols (pluronics), soluble and slightly soluble in water and containing a hydrophobic polypropylene glycol block with the same length but with different degrees of oxyethylation, were analyzed. It was determined that both pluronics are characterized by high surfactant properties, making it possible to use them as surfactants in heterophase polymerization processes. The observed differences in the kinetic specific features of the polymerization of styrene and methyl methacrylate (average particle diameter and polymerization rate, the character of the monomer conversion—time curves) allowed us to infer that the formation of the polymer-monomer particles occurs by different mechanisms. The obtained results showed that these surfactants are promising for the synthesis of polymer suspensions with a narrow particle size distribution and an average diameter in the range from 0.09 to 1.7 µm.

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不同结构的氧乙基聚丙二醇作为表面活性剂用于合成粒径分布较窄的聚苯乙烯和聚甲基丙烯酸甲酯悬浮液

研究人员分析了氧乙基化聚丙二醇（pluronics）的胶体化学特性，这些聚丙二醇可溶于或微溶于水，并含有长度相同但氧乙基化程度不同的疏水性聚丙二醇嵌段。结果表明，这两种多元醇都具有很高的表面活性剂特性，因此可以在异相聚合过程中用作表面活性剂。通过观察苯乙烯和甲基丙烯酸甲酯聚合过程中动力学特性的差异（平均颗粒直径和聚合速率、单体转化时间曲线的特征），我们可以推断出聚合物-单体颗粒的形成机制不同。结果表明，这些表面活性剂有望合成粒度分布窄、平均直径在 0.09 至 1.7 微米范围内的聚合物悬浮液。

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来源期刊

Russian Chemical Bulletin 化学-化学综合

CiteScore

2.70

自引率

47.10%

发文量

257

审稿时长

3-8 weeks

期刊介绍： Publishing nearly 500 original articles a year, by leading Scientists from Russia and throughout the world, Russian Chemical Bulletin is a prominent international journal. The coverage of the journal spans practically all areas of fundamental chemical research and is presented in five sections: General and Inorganic Chemistry; Physical Chemistry; Organic Chemistry; Organometallic Chemistry; Chemistry of Natural Compounds and Bioorganic Chemistry.