PDF (1496K)
摘要
以甘蔗渣、膨润土为原料,丙烯酸和丙烯酰胺为单体,N,N-亚甲基双丙烯酰胺(MBA)为交联剂,过硫酸钾(KSP)为引发剂,采用微波加热和水溶液聚合法,合成甘蔗渣/膨润土复合高吸水性树脂。考察了单因素影响,并在此基础上进行了正交试验,确定了最佳合成条件为:膨润土用量为6%,引发剂用量为1%,交联剂用量为0.02%,AM/AA=0.4,中和度为60%,辐射功率为390W,辐射时间为3min。此时,吸水倍率为442.6g/g,吸盐水倍率为101.9g/g。测定树脂的保水性能及重复使用性能,结果表明:常温情况下,树脂放置12d,水分基本释放完;重复吸水测定结果显示,产品第5次使用时,吸水倍率为283.8g/g,为第1次吸水倍率的64.1%,说明产品具有较好的保水性与重复使用性。吸水动力学研究结果表明:吸水倍率与时间的方根呈线性关系。
Abstract
With acrylic acid and acrylamide as monomers,N,N-methylene bisacrylamide (MBA) as crosslinking agent and potassium persulfate (KSP) as initiator,The bagasse/bentonite composite super-absorbent resin was synthesized by microwave heating.The optimum synthesis conditions were as follows:bentonite dosage was 6%,initiator dosage was 1%,crosslinking agent dosage was 0.02%,AM/AA=0.4,neutralization degree was 60%,radiation power was 390W,radiation time was 3min.At this time,the water absorption rate was 442.6g/g,and the salt uptake rate was 101.9g/g.The water retention and reusability of the resin were determined.The results showed that the water content of the resin was basically released after 12d at room temperature.The repeated water absorption test showed that the water absorption rate was 283.8g/g,64.1% of the first water absorption rate when the product was used for the fifth time.Which indicated that the product had better water retention and repetition.The study of water absorption kinetics showed that the water absorbency had a linear relationship with the root of time.
关键词
高吸水性树脂
/
甘蔗渣
/
微波法
Key words
super absorbent resin
/
bagasse
/
microwave method
微波法制备甘蔗渣/膨润土基高吸水树脂及性能研究[J].
化工新型材料, 2020, 48(1): 167-172 DOI:
[1] 唐晓璐.高吸水树脂的发展及应用[J].山东化工,2017,46(14):55-56.
[2] 胡鹏,贺龙,刘强.纤维素/膨润土基复合高吸水性树脂的制备及农业应用[J].焦作大学学报,2016,30(3):73-75.
[3] Yu Y,Zhang Y,Xia S.Research advance of high water-absorptive resin[J].New Chemical Materials,2014(4):113-115.
[4] 程志强,马琦,康立娟,等.微波辐射合成聚丙烯酸钠/膨润土复合高吸水树脂结构及性能研究[J].中国塑料,2012,26(5):58-63.
[5] 唐宏科,薛锋锋.P(AA-AM-VAC)/OMMT复合高吸水性树脂的制备[J].精细化工,2011,28(8):737-741.
[6] Flory P J.Principles of polymer chemistry[M].Newyork:Comell University Press,1953.
[7] Clark A H.Direct analysis ofexperimental tie line data(two polymer-one solvent systems)using Flor-Huggins theory[J].Carbohydr'ate Polymers,2000,42:337-351.
[8] 赵彦生,李琼,胡灯,等.改性聚天冬氨酸/聚丙烯酸复合吸水性树脂的制备与敏感性研究[J].精细化工,2016,33(6):620-627.
[9] 王斌,王晓红,董哲,等.淀粉接枝聚丙烯酸/丙烯酰胺高吸水树脂的微波合成进展[J].内蒙古民族大学学报(自然汉文版),2016,31(6):478-483.
[10] 刘书林,王翠玲,陈志安,等.高岭土复合耐盐型高吸水性树脂的合成[J].精细化工,2012,29(9):836-849.
[11] 王瑞.小麦秸秆/膨润土基高吸水性树脂的制备及性能研究[D].济南:山东大学,2013.
[12] 贺龙强,胡鹏,刘中阳.利用高岭土和玉米秸秆制备复合高吸水性树脂[J].江苏农业科学,2017,45(23):296-298.
[13] 舒静,张卿源,赵大飙.微波辐射原位聚合法合成蒙脱土(MMT)/淀粉改性高吸水性树脂的研究[J].化工科技,2017,25(3):30-35.
[14] 李小燕.麦秸制备耐盐型农用高吸水性树脂及其性能研究[D].西安:陕西科技大学,2006.
[15] 李好娜,曹奇领,化全县,等.秸秆纤维素系高吸水树脂的研究[J].化工新型材料,2018,46(2):131-134.
[16] Zhang X,Zhuo R,Yang Y.Using mixed solvent to synthesize temperature sensitive poly(N-isopropylacrylamide) gel with rapid dynamics properties[J].Biomaterials,2002,23(5):1313-1318.
[17] 梁猛,张小舟,马若芳,等。稻壳基高吸水性树脂的合成及性能研究[J].高师理科学刊,2016,36(2):37-40.
基金资助
国家自然科学基金(21607088);国家级大学生创新项目(20161136004)
