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首页> 外文期刊>Journal of industrial and engineering chemistry >Synthesis of amphiphilic silica/polymer composite nanoparticles as water-dispersible nano-absorbent for hydrophobic pollutants
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Synthesis of amphiphilic silica/polymer composite nanoparticles as water-dispersible nano-absorbent for hydrophobic pollutants

机译：两亲性二氧化硅/聚合物复合纳米颗粒的合成作为疏水性水分散纳米吸附剂

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摘要

Amphiphilic silica/polymer composite nanoparticles were synthesized through consecutive two-step surface modification process. Through the 1 st surface-modification, silica nanoparticles having urethane acrylate moieties onto the surface were synthesized and named as VSP nanoparticles. At the 2nd surface-modification process, VSP particles dispersed in DMSO were copolymerized with amphiphilic reactive oligomers (urethane acrylate nonionomers) to synthesize composite particles (VSP-UAN) where amphiphilic crosslinked polymers and silica nanoparticles were chemically connected with each other. On contacting with water, VSP-UAN formed nanoparticles (154-285 nm) in water without use of any dispersant, and these nanoparticles absorbed larger amount of hydrophobic molecules compared to amphiphilic polymer nanoparticles. On applied in ultrafiltration process, VSP-UAN nanoparticles showed 100% of retention recovery and higher permeate flux compared to amphiphilic polymer nanoparticles and nonionic surfactant (Triton X-100) micelles. This shows high potential in application of VSP-UAN composite nanoparticles as water-dispersible nano-absorbent for hydrophobic pollutants or hydrophobic drugs.
机译：通过连续的两步表面改性工艺合成了两亲性二氧化硅/聚合物复合纳米粒子。通过第一表面改性，合成了在表面具有氨基甲酸酯丙烯酸酯部分的二氧化硅纳米粒子，并将其命名为VSP纳米粒子。在第二次表面改性过程中，将分散在DMSO中的VSP颗粒与两亲反应性低聚物（氨基甲酸酯丙烯酸酯非离聚物）共聚，以合成两亲性交联聚合物和二氧化硅纳米颗粒彼此化学连接的复合颗粒（VSP-UAN）。与水接触时，VSP-UAN在不使用任何分散剂的情况下在水中形成纳米粒子（154-285 nm），与两亲聚合物纳米粒子相比，这些纳米粒子吸收了大量的疏水分子。与两亲聚合物纳米颗粒和非离子表面活性剂（Triton X-100）胶束相比，在超滤过程中应用时，VSP-UAN纳米颗粒表现出100％的保留率回收率和更高的渗透通量。这表明在VSP-UAN复合纳米颗粒作为疏水性污染物或疏水性药物的水分散性纳米吸收剂中具有很高的应用潜力。

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