二甲戊灵悬浮剂用三元磺酸盐分散剂的合成与性能
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摘要
以甲基烯丙醇聚氧乙烯醚、甲基丙烯酸羟乙酯和对苯乙烯磺酸钠为单体合成一种能溶于水的梳状三元聚磺酸盐分散剂,研究该分散剂的分子结构、分散性能和润湿性能,用红外、核磁、凝胶色谱进行聚合物结构表征,用光散射粒度分析仪和视频接触角测定仪分别对分散后的粒径分布和润湿效果进行表征。结果表明:在聚磺酸盐分散剂添加量为10%时,Zeta电位和悬浮率最佳,悬浮率能达到95.36%±1.08%,并且悬浮剂热贮前后平均粒径分别是0.796μm和1.125μm;稀释后在亲油和亲水叶片上的动态接触角衰减系数分别是0.29和0.48。该聚磺酸盐分散剂能有效地吸附在二甲戊灵颗粒表面并产生静电作用和空间位阻作用,使制备的高浓度二甲戊灵悬浮体系稳定。
A water-soluble comb-like ternary polysulfonate dispersant was prepared by using methyl allyl alcohol polyoxyethylene ether, 2-hydroxyethyl methacrylate and styrene sulfonic sodium as the monomers. The molecular structure, dispersion and wetting properties of the dispersant were studied. The polymer structure was characterized by infrared, nuclear magnetic and gel chromatography. The particle size distribution and wetting effect were characterized by a video contact angle meter and a light scattering particle size analyzer. The results showed that when the amount of polysulfonate dispersant was 10%, the Zeta potential and suspension rate were the best, and the suspension rate could reach 95.36%±1.08%.The average particle size of the suspension before and after heat storage was 0.796 μm and 1.125 μm, respectively. The attenuation coefficients of dynamic contact angle on lipophilic and hydrophilic leaves after dilution were 0.29 and 0.48, respectively. The polysulfonate dispersant can effectively adsorb on the surface of pendimethalin particles and provide electrostatic action and steric hindrance, so that the prepared high-concentration pendimethalin suspension system is stable.
A water-soluble comb-like ternary polysulfonate dispersant was prepared by using methyl allyl alcohol polyoxyethylene ether, 2-hydroxyethyl methacrylate and styrene sulfonic sodium as the monomers. The molecular structure, dispersion and wetting properties of the dispersant were studied. The polymer structure was characterized by infrared, nuclear magnetic and gel chromatography. The particle size distribution and wetting effect were characterized by a video contact angle meter and a light scattering particle size analyzer. The results showed that when the amount of polysulfonate dispersant was 10%, the Zeta potential and suspension rate were the best, and the suspension rate could reach 95.36%±1.08%.The average particle size of the suspension before and after heat storage was 0.796 μm and 1.125 μm, respectively. The attenuation coefficients of dynamic contact angle on lipophilic and hydrophilic leaves after dilution were 0.29 and 0.48, respectively. The polysulfonate dispersant can effectively adsorb on the surface of pendimethalin particles and provide electrostatic action and steric hindrance, so that the prepared high-concentration pendimethalin suspension system is stable.
引文
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[25] 邢雯,周一夫,田晓斌,等.梳型聚羧酸盐分散剂的合成及其在吡虫啉水悬浮剂中的应用[J].过程工程学报,2014,14(2):345-349.
[26] 王波,宋坚利,曾爱军,等.剂型及表面活性剂对农药药液在植物叶片上铺展行为的影响[J].农药学学报,2012,14(3):334-340.
[27] 卢向阳,徐筠,陈莉.几种除草剂药液表面张力、叶面接触角与药效的相关性研究[J].农药学学报,2002,4(3):67-71.
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[29] GaoR J,Yao Y,Wu H,et al.Effect of amphoteric dispersant on the dispersion properties of nano-SiO2 particles[J].Journal of Applied Polymer Science,2017,134(29):45075.
[2] 陈桢,任天瑞.丙烯酸-苯乙烯磺酸钠-甲基丙烯酸羟乙酯共聚物分散剂的合成及其应用[J].过程工程学报,2008,8(2):240-247.
[3] 张斌,曹立冬,刘峰,等.几种新型润湿分散剂在悬浮剂加工中的应用评价[J].农药学学报,2014,16(2):197-205.
[4] 华乃震,林雨佳.影响农药悬浮剂物理稳定性因素和对策:Ⅰ[J].农药,2012,51(2):90-94.
[5] Zhang G H,Zhu N,Li Y B,et al.Influence of side-chain structure of polycarboxylate dispersant on the performance of coal water slurry[J].Fuel Processing Technology,2017,161:1-7.
[6] Zhu Y H,Fang F,Min Y H,et al.Comb-like polymer with sulfo groups and its dispersion and rheological properties in aqueous ceramic suspensions[J].Journal of Applied Polymer Science,2017,134(10):44563.
[7] Akhlaghi O,Akbulut O,Menceloglu Y Z.Extensional rheology and stability behavior of alumina suspensions in the presence of AMPS-modified polycarboxylate ether-based copolymers[J].Colloid and Polymer Science,2015,293(10):2867-2876.
[8] Wang G Y,Bai Y Y,Ma X Y,et al.Effects of the PEG length of polycarboxylate-based terpolymers on their dispersion properties[J].Journal of Molecular Liquids,2017,225:333-338.
[9] Ran Q P,Qiao M,Liu J P,et al.SMA-g-MPEG comb-like polymer as a dispersant for Al2O3 suspensions[J].Applied Surface Science,2012,258(7):2447-2453.
[10] 孙停停,张树芹,路福绥,等.苯乙烯-马来酸酐共聚物对20%除虫脲悬浮剂分散稳定性的影响[J].应用化学,2012,29(9):1046-1052.
[11] 王利东,任天瑞,燕云峰,等.羧酸盐磺酸盐共聚物分散剂合成及其分散性能[J].过程工程学报,2010,10(6):1193-1199.
[12] 徐妍,孙宝利,马超,等.超分散剂在去津颗粒表面吸附的XPS和SEM分析[J].光谱学与光谱分析,2011,31(9):2569-2573.
[13] 徐妍,马超,贾然,等.超分散剂在莠去津颗粒表面吸附的红外和拉曼光谱学研究[J].光谱学与光谱分析,2011,31(3):640-643.
[14] Lee W F,Chen Y J.Synthesis and swelling properties of 2-hydroxyethyl methacrylate-co-1-vinyl-3-(3-sulfopropyl)imidazolium betaine hydrogels[J].Journal of Applied Polymer Science,2001,81(12):2888-2900.
[15] Chiappisi L.Polyoxyethylene alkyl ether carboxylic acids:An overview of a neglected class of surfactants with multiresponsive properties[J].Advances in Colloid and Interface Science,2017,250:79-94.
[16] Martínez-Balbuena L,Arteaga-Jiménez A,Hernández-Zapata E,et al.Applicability of the Gibbs Adsorption Isotherm to the analysis of experimental surface-tension data for ionic and nonionic surfactants[J].Advances in Colloid and Interface Science,2017,247:178-184.
[17] Zhang N N,Nguyen A V,Zhou C C.A review of the surface features and properties,surfactant adsorption and floatability of four key minerals of diasporic bauxite resources[J].Advances in Colloid and Interface Science,2018,254:56-75.
[18] 郭振豪,桂奇峰,张博,等.聚羧酸盐和聚萘磺酸盐分散剂在高浓度水悬浮剂中的应用[J].高等学校化学学报,2017,38(7):1278-1285.
[19] 张殿龙.不同非离子表面活性剂的动态吸附铺展及对煤尘润湿机制的研究[D].太原:太原理工大学,2016:51-54.
[20] Zhang G H,Zhu N,Zhu X D.Influence of polycarboxylate dispersants with different molecular structures on the performance of coal water slurry[J].Journal of Dispersion Science and Technology,2016,32(12):1799-1805.
[21] Peng X Y,Li X,Li Z L.Evaluation of the dispersing properties of polycarboxylate-type superplasticizers with different molecular weight in cement systems[J].Journal of Dispersion Science and Technology,2013,34(9):1265-1272.
[22] 赵献增,朱靖,王冬梅,等.甲酸钠链转移法合成超低分子量聚丙烯酰胺的研究[J].河南科学,2008,26(2):163-165.
[23] 张春华,卢忠利,李晶,等.超分散剂在30%二甲戊灵SC配方开发中的应用[J].农药,2017,56(9):638-641.
[24] Bai Y Y,Ma X Y,Wang W X,et al.Synthesis,aggregation and dispersity properties of novels amphiphilic comb-like terpolymers[J].Colloid and Surface A:Physicochemical and Engineering Aspects,2017,526:40-47.
[25] 邢雯,周一夫,田晓斌,等.梳型聚羧酸盐分散剂的合成及其在吡虫啉水悬浮剂中的应用[J].过程工程学报,2014,14(2):345-349.
[26] 王波,宋坚利,曾爱军,等.剂型及表面活性剂对农药药液在植物叶片上铺展行为的影响[J].农药学学报,2012,14(3):334-340.
[27] 卢向阳,徐筠,陈莉.几种除草剂药液表面张力、叶面接触角与药效的相关性研究[J].农药学学报,2002,4(3):67-71.
[28] Lange A,Plank J.Optimization of comb-shaped polycarboxylate cement dispersants to achieve fast-flowing mortar and concrete[J].Journal of Applied Polymer Science,2015,132(37):42529.
[29] GaoR J,Yao Y,Wu H,et al.Effect of amphoteric dispersant on the dispersion properties of nano-SiO2 particles[J].Journal of Applied Polymer Science,2017,134(29):45075.