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首页> 外文期刊>Journal of Applied Polymer Science >Chemical modification of cashew gum with acrylamide using an ultrasound-assisted method
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Chemical modification of cashew gum with acrylamide using an ultrasound-assisted method

机译：超声波辅助对丙烯​​酰胺进行腰果胶化学改性

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摘要

A flocculant based on cashew gum (CG) grafted with polyacrylamide (PAM) was synthesized using potassium persulfate as the chemical initiator and ultrasound energy. The intrinsic viscosity, hydrodynamic radius, and grafting efficiency of the grafted copolymers (CG-g-PAM) were investigated at different monomer and initiator concentrations. The CG-g-PAM copolymers were evaluated in kaolin suspension and river water by using jar test procedure comparatively to a commercial flocculant (Flonex-9045). Ultrasonication resulted in reduced reaction time and high grafting efficiency. The reaction gel point was reached within 10 min and the grafting efficiency was dependent on the acrylamide concentration. The grafted copolymer CG-g-PAM-15(285) obtained with 0.285 mmol of initiator showed higher hydrodynamic radius, with flocculation efficacy of 96% comparable with the flocculant Flonex-9045. (C) 2016 Wiley Periodicals, Inc.
机译：以过硫酸钾为化学引发剂和超声能合成了一种基于腰果胶（CG）接枝聚丙烯酰胺（PAM）的絮凝剂。在不同的单体和引发剂浓度下，研究了接枝共聚物（CG-g-PAM）的特性粘度，流体力学半径和接枝效率。相对于市售絮凝剂（Flonex-9045），使用广口瓶试验程序，对高岭土悬浮液和河水中的CG-g-PAM共聚物进行了评估。超声处理缩短了反应时间，提高了接枝效率。反应凝胶点在10分钟内达到，接枝效率取决于丙烯酰胺浓度。用0.285 mmol引发剂制得的接枝共聚物CG-g-PAM-15（285）表现出较高的流体力学半径，其絮凝效果与絮凝剂Flonex-9045相当，为96％。 （C）2016威利期刊公司

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