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现代化工  2017, Vol. 37 Issue (8): 211-213    DOI: 10.16606/j.cnki.issn0253-4320.2017.08.049
  分析测试 本期目录 | 过刊浏览 | 高级检索 |
GPC测聚羧酸减水剂吸附量对水泥助磨剂的抗干扰作用
杜勇, 郭丽萍, 杜小弟, 陈刚, 雷家珩
武汉理工大学化学化工与生命科学学院, 湖北 武汉 430070
GPC's anti-interference effect against cement grinding aids when detecting adsorption of polycarboxylate superplasticizer
DU Yong, GUO Li-ping, DU Xiao-di, CHEN Gang, LEI Jia-heng
School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
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摘要 考察了三乙醇胺、乙酸钠、硬脂酸、木质素磺酸钠等助磨剂对凝胶渗透色谱法(GPC)和紫外-可见分光光度法(UV)测定聚羧酸减水剂(PCE)吸附量的干扰问题。结果表明,用GPC法测定PCE的吸附量,GPC色谱柱可有效分离PCE和助磨剂,助磨剂对PCE浓度及其吸附量的测定结果不产生明显影响,其干扰系数接近于0。而用UV法测定PCE的吸附量,助磨剂的紫外吸收会对PCE浓度的测定结果产生干扰,从而使吸附量计算结果偏小,甚至出现负值。不同助磨剂对UV法的干扰系数分别为:木质素磺酸钠为8.30,三乙醇胺为4.84,硬脂酸为0.81,乙酸钠为0.63。
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杜勇
郭丽萍
杜小弟
陈刚
雷家珩
关键词:  水泥助磨剂  聚羧酸减水剂  吸附量  GPC法  UV法    
Abstract: When the gel permeation chromatography (GPC) method and ultraviolet and visible spectrophotometer (UV) method are used to detect absorption capacity of polycarboxylate superplasticizer (PCE),the interference effects generated by grinding aids such as triethanolamine,sodium acetate,stearic acid and sodium lignosulphonate are studied respectively.The result shows that PCE and grinding aids can be separated effectively by GPC chromatographic column when GPC method is used to determine the adsorption capacity of PCE.Moreover,grinding aids have no significant impact on the detection results of PCE concentration and its adsorption capacity,with the interference coefficient close to zero.However,the determination of PCE concentration is influenced by grinding aids' absorption against ultraviolet when the UV method used to determine the adsorption capacity of PCE.Thus,the adsorption capacity calculation results are smaller than normal,or even negative.The interference coefficients of sodium lignosulphonate,triethanolamine,stearic acid and sodium acetate are 8.30,4.84,0.81,0.63,respectively.
Key words:  cement grinding aids    polycarboxylate superplasticizer    adsorption capacity    gel permeation chromatography    ultraviolet and visible spectrophotometer
收稿日期:  2017-02-16                出版日期:  2017-08-20
TU528.042  
通讯作者:  郭丽萍(1960-),女,硕士,教授,主要从事材料化学研究,通讯联系人,liping_guo@whut.edu.cn。    E-mail:  liping_guo@whut.edu.cn
作者简介:  杜勇(1993-),男,硕士生,主要从事建筑材料研究,1247944728@qq.com
引用本文:    
杜勇, 郭丽萍, 杜小弟, 陈刚, 雷家珩. GPC测聚羧酸减水剂吸附量对水泥助磨剂的抗干扰作用[J]. 现代化工, 2017, 37(8): 211-213.
DU Yong, GUO Li-ping, DU Xiao-di, CHEN Gang, LEI Jia-heng. GPC's anti-interference effect against cement grinding aids when detecting adsorption of polycarboxylate superplasticizer. Modern Chemical Industry, 2017, 37(8): 211-213.
链接本文:  
http://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2017.08.049  或          http://www.xdhg.com.cn/CN/Y2017/V37/I8/211
[1] Yamada K.Basics of analytical methods used for the investigation of interaction mechanism between cements and superplasticizers[J].Cement and Concrete Research,2011,41(7):793-798.
[2] Lv Shenghua,Ju Haobo,Qiu Chaochao,et al.Effects of connection mode between carboxyl groups and main chains on polycarboxylate superplasticizer properties[J].J Applied Polymer Sci,2012,128(6):3925-3932.
[3] Liu Ming,Lei Jiaheng,Guo Liping,et al.The application of thermal analysis,XRD and SEM to study the hydration behavior of tricalcium silicate in the presence of a polycarboxylate superplasticizer[J].Thermochimica Acta,2015,613:54-60.
[4] 杜小弟,陈莉,张安富,等.以聚乙二醇作为凝胶渗透色谱参比标准测定聚丙烯酸相对分子质量的误差问题[J].理化检验(化学分册),2010,46(10):1114-1117.
[5] 杜小弟,张安富,雷家珩,等.聚丙烯酸的凝胶渗透色谱分离及相对分子质量测定[J].分析测试学报,2011,30(2):167-170.
[6] 陈常亮,郭丽萍,杜小弟,等.GPC测试聚羧酸减水剂吸附量的方法研究[J]新型建筑材料,2016.43(7):21-24.
[7] Sottili L,Padovani D,Bravo A.Mechanism of action of grinding aids in the cement production[J].Cement Building Mater,2002,9:40-46.
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[1] . [J]. Modern Chemical Industry, 2015, 35(11): 77 -80 .
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