腐植酸钾-丙烯酸-丙烯酰胺保水剂的制备及吸液性能研究
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摘要
以丙烯酸、丙烯酰胺和腐植酸钾为原材料,过硫酸钾为激发剂,N,N′-亚甲基双丙烯酰胺为交联剂,采用溶液聚合法制备腐植酸基的腐植酸钾-丙烯酸-丙烯酰胺保水剂,加入腐植酸钾,既降低成本又提高保水剂的性能及增强土壤肥力,可获得保水增肥的效果。并对保水剂进行表征。研究结果表明:在单体丙烯酸质量为基准,腐植酸钾用量为3%(wt,质量分数),过硫酸钾用量为0.3%(wt,质量分数),N,N′-亚甲基双丙烯酰胺用量为0.03%(wt,质量分数),反应温度为40℃,反应时间为2h条件下,共聚合成的腐植酸基保水剂的吸去离子水倍率为821g/g,吸0.9%盐水的倍率为81g/g,保水性能较好。
Using acrylic acid,acrylamide and potassium humic acid as raw materials,potassium persulfate as initiator,N,N′-methylenebisacrylamide as crosslinking agent,the humic acid-based agricultural water-conservation agent was prepared by solution polymerization.Adding potassium humate not only reduced costs,but also improved the performance of water-conservation agent and enhanced soil fertility,the purposes of water and fertilizer were achieved.The water-conservation agent was characterized by fourier transform infrared spectroscopy(FT-IR).The experiment showed that the dosage of potassium humate was 3%(wt,mass fraction),the amount of initiator was 0.3%(wt,mass fraction),the amount of crosslinking agent was 0.03%(wt,mass fraction),the reaction temperature 40℃,the reaction time was 2 h,the deionized water absorption rate of super absorbent polymer was 821 g/g,0.9% brine suction rate of81 g/g,which had good water retention.
Using acrylic acid,acrylamide and potassium humic acid as raw materials,potassium persulfate as initiator,N,N′-methylenebisacrylamide as crosslinking agent,the humic acid-based agricultural water-conservation agent was prepared by solution polymerization.Adding potassium humate not only reduced costs,but also improved the performance of water-conservation agent and enhanced soil fertility,the purposes of water and fertilizer were achieved.The water-conservation agent was characterized by fourier transform infrared spectroscopy(FT-IR).The experiment showed that the dosage of potassium humate was 3%(wt,mass fraction),the amount of initiator was 0.3%(wt,mass fraction),the amount of crosslinking agent was 0.03%(wt,mass fraction),the reaction temperature 40℃,the reaction time was 2 h,the deionized water absorption rate of super absorbent polymer was 821 g/g,0.9% brine suction rate of81 g/g,which had good water retention.
引文
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[2]吴季怀,林建明,魏月林.高吸水保水材料[M].北京:化学工业出版社,2005,21-25.
[3]Sun R J,Li M Y,Zhang J C,et al.The synthesis and properties of the modified bentonite-starch absorbent polymer[J].Advanced Materials Research,2013,726:511-515.
[4]王启强,邵水源.尿素/丙烯酸合成保墒剂在碱性土壤中的应用研究[J].化工新型材料,2017,45(9);232-234.
[5]王丹菊,杨文武,林洁.高吸水尿素-聚乙烯醇-丙烯酸树脂的合成及性能研究[J].化工新型材料,2017,45(9):102-104.
[6]Ahmed E M.Hydrogel:preparation,characterization and applications:a review[J].Journal of Advanced Research,2015,6(2):105-121.
[7]Sawut A,Yimit M,Sun W F,et al.Photopolymerisation and characterization of maleylatedcellulose-g-poly(acylic acid)superabsorbent polymer[J].Carbohydrate Polymers,2014,101(30):231-239.
[8]Kilic A G,Malci S,Celikbicak O,et al.Gold recovery onto poly(acrylamide-allylthiourea)hydrogels synthesized by treating with gamma radiation[J].Analylica Chimica Acta,2015,547(1):18-25.
[9]El-Refaie K,Elbadawy A,Mohamed S,et al.Physically crosslinked poly(vinyl alcohol)-hydroxyethyl starch blend hydrogel membranes:synthesis and characterization for biomedical applications[J].Arabian Journal of Chemistry,2014,7(3):372-380.
[10]Tong I J,Krittiya K,Kitiya N,et al.Kinetics and mechanism of adsorptive removal of copper from queous solution with poly(vinyl alcohol)hydrogel[J].Transactions of Nonferrous Metals Society of China,2014,24(10):3386-3393.
[11]Tang L H,Kumar R N,Rozman H D.GMA grafted sago starch as a reactive component in ultra violet radiation curable coatings[J].Carbohydrate Polymers,2003,54(4):509-516.
[12]Raafat A I,Eid M.Radiation synthesis of superabsorbent CMC based hydrogels for agriculture applications[J].Nuclear Instruments and Method in Physics Research B,2012,283(1):71-76.
[13]郭军,黄劲松,吴小说,等.辐照水稻秸秆制备吸水性树脂的研究[J].核农学报,2015,29(3):478-483.
[14]高丽娟,刘焕,徐妍,等.褐煤磺化腐植酸型超强保水剂的制备与表征[J].洁净煤技术,2015(1):64-68.
[15]Li A,Zhang J,Wang A.Synthesis characterization and water absorbency properties of poly(acrylic acid)/sodium humate superabsorbent composite[J].Polymers for Advanced Technologies,2005,16:675-680.
[16]初茉,朱书全,李华民,等.腐植酸-聚丙烯酸盐表面交联吸水性树脂的研究[J].中国矿业大学学报,2005,34(3):369-373.
[17]Peuravuori J,Zbankkova P,Pihlaja K.Aspects of structural features in lignite and lignite hemic acids[J].Fuel,2006,87(9):829-839.
[18]郑易安,张俊平,王爱勤.腐植酸保水剂的研发现状与发展趋势[J].腐植酸,2011(2):1-5.
[19]斯玛伊力·克热木,买买提江·依米提,司马义·努尔拉.丙烯酸-淀粉-硅藻土复合耐盐性高吸水树脂的紫外光引发合成及其性能[J].功能高分子学报,2010,23(2):166-171.
[20]石燕军,朱丽珺,张金池,等.复合型保水剂的制备与性能研究[J].南京林业大学学报(自然科学版),2017,41(5):114-120.
[21]易菊珍,梁子倩,张黎明.腐植酸钠/聚丙烯酰胺水凝胶吸水性能的研究[J].中山大学学报(自然科学版),2007,46(2):36-40.
[22]马凤国,宋毅,多英全,等.羧甲基纤维素与丙烯酸和丙烯酰胺共聚接枝研究[J].高分子材料科学与工程,2003,19(1):81-83.
[23]白国强,李仲谨,李建成.纤维素接枝高吸水树脂的制备及性能研究[J].陕西科技大学学报,2003,21(6):34-38.
[24]Flory P J.Principles of polymer chemistry[M].Cornell:Cornell University Press,1954,391-393.