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首页> 外文期刊>Journal of Applied Polymer Science >Improvement of performance and fouling resistance of polyamide reverse osmosis membranes using acrylamide and TiO2 nanoparticles under UV irradiation for water desalination
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Improvement of performance and fouling resistance of polyamide reverse osmosis membranes using acrylamide and TiO2 nanoparticles under UV irradiation for water desalination

机译：用丙烯酰胺和TiO2纳米粒子在紫外线照射下使用丙烯酰胺和TiO2纳米粒子的性能和污垢抗性的性能和污垢抗性

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摘要

The purpose of this research is to explain the surface modification of fabricated polyamide reverse osmosis (RO) membranes using UV-initiated graft polymerization at different irradiation times (15, 30, 60, and 90 s) and various acrylamide concentrations (10, 20, and 30 g L-1). Also, coating of membranes surface with various concentrations of TiO2 nanoparticles (10, 20, 30, and 50 ppm) followed by the same UV irradiation times was investigated. After that, the membranes modification was done by grafting of acrylamide blended with TiO2 nanoparticles via UV irradiation. The characterization of membranes surface properties and their performance were systematically carried out. The results demonstrated the enhanced hydrophilicity of modified membranes and confirmed the presence of acrylamide and nanoparticles on the membranes surface. Acrylamide-grafted membranes could reach to higher water flux than pristine membrane with little reduction in salt rejection. Moreover, TiO2-coated membranes indicated enhancement of water flux continuously with increase in nanoparticles concentration and irradiation time and rejection of membranes was slightly decreased at low irradiation times. Also, RO membranes modified simultaneously with acrylamide and TiO2 nanoparticles under UV irradiation exhibited improved water flux up to 18%, slightly higher rejection, and considerable better fouling resistance compared with pristine one. (c) 2019 Wiley Periodicals, Inc.
机译：本研究的目的是解释使用在不同照射时间UV引发的接枝聚合制造的聚酰胺反渗透（RO）膜的表面改性（15，30，60，和90秒）和各种丙烯酰胺浓度（10，20，和30g L-1）。此外，膜的涂布用各种浓度随后在相同UV照射倍TiO 2纳米颗粒（10，20，30，和50ppm）的表面进行了研究。在此之后，该膜变形，通过丙烯酰胺的接枝完成共混TiO 2纳米颗粒通过UV照射。的膜表面性质和它们的性能表征进行了系统的执行。结果表明改性膜的增强的亲水性，并确认丙烯酰胺和纳米颗粒的膜表面上存在。丙烯酰胺的接枝膜可达到比具有在盐截留小还原原始膜的水通量高。此外，二氧化钛涂覆的膜指示增强的水与在纳米颗粒浓度的增加和照射时间和抑制膜中的低辐照时间被略微降低连续通量。另外，反渗透膜用UV照射下的丙烯酰胺和二氧化钛纳米粒子改性同时表现出改善的水通量高达18％，略高排斥，和相当大的更好的抗污染性与原始的相比。 （c）2019 Wiley期刊，Inc。

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