Preparation of Polymer-Mineral Nanocomposites Based on Vinyl Monomers and Dispersed Inorganic Oxides

• 作者: Volodymyr Dutka Yaroslav Kovalskyi Olena Aksimentyeva Nataliya Oshchapovska
• 来源期刊: 化学工程与科学期刊(英文)
• 学科: 化学
• 关键词: Polymer-Mineral Composites Organic Peroxides Radical Polymerization Peroxide Thermal Degradation Metal Oxides ADSORPTION Effect of Surface
• 年，卷（期）: 2021,（1）
• 页码范围: 18-28
• 页数: 11页
• 分类号: O62

摘要

The polymer-mineral composites were synthesized using vinyl monomers styrene<span "="" style="font-size:10.5pt;"><span style="font-size:12px;">, methyl acrylate, and butyl acrylate with nano dispersed oxides Fe</span>_{<span style="font-size:12px;">2</span>}<span style="font-size:12px;">O</span>_{<span style="font-size:12px;">3</span>}<span style="font-size:12px;">, Cr</span>_{<span style="font-size:12px;">2</span>}<span style="font-size:12px;">O</span>_{<span style="font-size:12px;">3</span>}<span style="font-size:12px;">, V</span>_{<span style="font-size:12px;">2</span>}<span style="font-size:12px;">O</span>_{<span style="font-size:12px;">5</span>}<span style="font-size:12px;"> and SiO</span>_{<span style="font-size:12px;">2</span>}<span style="font-size:12px;"> in the presence of benzoyl peroxide and other peroxide initiators. Benzoyl peroxide adsorption on Fe</span>_{<span style="font-size:12px;">2</span>}<span style="font-size:12px;">O</span>_{<span style="font-size:12px;">3</span>}<span style="font-size:12px;">, Cr</span>_{<span style="font-size:12px;">2</span>}<span style="font-size:12px;">O</span>_{<span style="font-size:12px;">3</span>}<span style="font-size:12px;">, and V</span>_{<span style="font-size:12px;">2</span>}<span style="font-size:12px;">O</span>_{<span style="font-size:12px;">5</span>}<span style="font-size:12px;"> surfaces was studied. The adsorption parameters were found: adsorption-desorption equilibrium constants, maximum adsorption, and the area occupied by the molecule benzoyl peroxide on the surface of the adsorbent. The molecular weights of the polymers in the composites and the degree of grafting of the macromolecules of the polymer to the surface of oxides were studied. It has been found that the surface of the dispersed oxides influences the rate of thermal decomposition of the peroxide initiators and the polymerization parameters of the vinyl monomers.</span></span>