以木薯淀粉(CSt)、丙烯酸(AA)和二甲胺基丙基丙烯酰胺(DMAPAA)为主要原料,通过水溶液聚合法制备了CSt-g-AA-DMAPAA吸水树脂。使用红外光谱(FT-IR)、热重-红外同步分析(TGA-DTG-FTIR)和X射线衍射(XRD)对样品进行了表征。评价了样品在纯水和不同浓度NaCl、CaCl2或AlCl3盐水中的溶胀性能并分析溶胀动力学。结果表明:样品在200℃以下热稳定性良好,CSt从结晶态转变为无定型;样品在纯水中的溶胀符合二级动力学模型,在浓度5%的NaCl、CaCl2或AlCl3盐水中,溶胀倍率分别为18.09g/g、18.25g/g或19.24g/g;样品在超高浓度盐水中不聚沉,表现出良好的耐盐性能。
Using cassava starch (CSt),acrylic acid(AA) and dimethylaminopropyl acrylamide (DMAPAA) as main raw materials,CSt-g-AA-DMAPAA absorbent resin was prepared though solution polymerization.The sample was characterized using FT-IR,TGA-DTG-FTIR and XRD.Swelling properties of the sample in pure water and NaCl with different concentration,CaCl2 or AlCl3 brine were evaluated.Swelling kinetics was analyzed.The results showed that the samples had good thermal stability under 200℃.CSt changed from crystal to amorphous structure.The data of swelling was in accord with second-order kinetic model.Swelling ratio was 18.09g/g,18.25g/g and 19.24g/g in a mass concentration of 5% NaCl,CaCl2 or AlCl3 brine,respectively.The sample did not precipitate in ultra-high concentration brine and it exhibited good salt-resistant properties.
[1] Fernando T N,Ariadurai S A,Disanayaka C K,et al.Development of radiation grafted super absorbent polymers for agricultural applications[J].Energy Procedia,2017,127:163-177.
[2] Park B,Choi C Y.Self-healing capability of cementitious materials with crystalline admixtures and super absorbent polymers (SAPs)[J].Construction and Building Materials,2018,189(20):1054-1066.
[3] 马蕊,李双双,王晓伟,等.商用聚丙烯酸类高吸水树脂粒子尺寸及分布与其凝胶浓度的关系[J].应用化学,2019,36(7):807-814.
[4] Meng Y,Liu X Q,Li C X,et al.Super-swelling lignin-based biopolymer hydrogels for soil water retention from paper industry waste[J].International Journal of Biological Macromolecules,2019,135:815-820.
[5] Wei C Y,Huang Y,Liao Q,et al.The kinetics of the polyacrylic superabsorbent polymers swelling in microalgae suspension to concentrate cells density[J].Bioresource Technology,2018,249:713-719.
[6] Ying H,Zhang L F,Wu D,et al.Ionic strength-response hyperbranched polyglycerol/polyacrylic acid hydrogel for the reversible immobilization of enzyme and the synthesis of biodiesel[J].Energy Conversion and Management,2017,144:303-311.
[7] 王飞.聚丙烯酸型高吸水树脂的改性及其性能研究[D].广州:华南理工大学,2016.
[8] 王向鹏,郑云香,张春晓,等.P(AA-AMPS)吸水树脂的制备及高温环境中耐盐性能测定[J].化工新型材料,2019,47(3):185-188.
[9] Xiao S W,Ren B P,Huang L,et al.Salt-responsive zwitterionic polymer brushes with anti-polyelectrolyte property[J].Current Opinion in Chemical Engineering,2018,19:86-93.
[10] 肖圣威.具有强“反聚电解质效应”的两性离子聚合物设计、制备及应用研究[D].杭州:浙江工业大学,2017.
[11] Liu H,Ma Z F,Yang W F,et al.Facile preparation of structured zwitterionic polymer substrate via sub-surface initiated atom transfer radical polymerization and its synergistic marine antifouling investigation[J].European Polymer Journal,2019,112:146-152.
[12] Yu W,Wang Y W,LI A M,et al.Evaluation of the structural morphology of starch-graft-poly(acrylic acid) on its scale-inhibition efficiency[J].Water Research,2018,141:86-95.
[13] 王梓民,石海信,王爱荣,等.冷冻交联制备ZM-CSt-PVA复合凝胶及吸附Cu2+性能[J].精细化工,2019,36(6):1198-1202.
[14] Chen H,Wang Z M,Ye Z B,et al.The solution behavior of hydrophobically associating zwitterionic polymer in salt water[J].Journal of Applied Polymer Science,2013,131(1):1-15.
[15] 王梓民,吕雷,张淑侠,等.一种增稠剂及其制备方法:中国10433014.7[P].2017-11-24.
