Preparation of a copolymer membrane from maleic rosinate acrylate and diacetone acrylamide
WEI Yi-chun1,3, YU Hui-cheng1,2, SHI Zhan-wang1, LI Hao1, LEI Fu-hou1
1. Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530006, China; 2. Key Laboratory of Guangxi Colleges and Universities for Food Safety and Pharmaceutical Analytical Chemistry, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530006, China; 3. Guangxi Key Laboratory Cultivation Base for Polysaccharide Materials and Modification, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530006, China
Abstract: With ethylene glycol maleic rosinate acrylate (EGMRA) as crosslinking agent and diacetone acrylamide (DAAM) as monomer,a copolymer membrane is thermally polymerized on an aluminium alloy 6063.The chemical structure and morphology of the copolymer membrane are examined by Fourier-transform infrared spectrum and scanning electron microscopy,respectively.Results confirm that polydiacetone acrylamide-ethylene glycol maleic rosinate acrylate (PDAAM-EGMRA) copolymer membrane are formed on aluminium alloy 6063,which has less porous and smoother surface.Electrochemical properties of the copolymer membranes made by using different mole ratios of EGMRA are examined in a 3.5 wt% NaCl solution by means of polarization curves and electrochemical impedance spectroscopy.It is found that the corrosion current density of the membrane falls to 0.34-0.32 μA·cm-2 from 6.28 μA·cm-2 of bare aluminium alloy 6063,the corrosion potential of the membrane increases from -875 V to -0.838 V while that of bare aluminium alloy 6063 is -907 V,the loop diameters of the copolymer membrane are approximately 100-120 kΩ·cm2 when EGMRA concentration ranges from 0.050 mol·L-1 to 0.075 mol·L-1.It is verified that the prepared PDAAM-EGMRA copolymer membrane can provide more effective protection for aluminium alloy.
韦贻春, 余会成, 石展望, 李浩, 雷福厚. 马来松香与双丙酮丙烯酰胺制备共聚膜的研究[J]. 现代化工, 2020, 40(7): 145-149.
WEI Yi-chun, YU Hui-cheng, SHI Zhan-wang, LI Hao, LEI Fu-hou. Preparation of a copolymer membrane from maleic rosinate acrylate and diacetone acrylamide. Modern Chemical Industry, 2020, 40(7): 145-149.
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