蒙脱土纳米复合凝胶与接触基质间的粘附力测量
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- 英文论文题名：Adhesion Force Measurement between MMT-based Nanocomposite Hydrogel and Contact Substrate
- 论文作者：刘洪发 ; 孙斐斐 ; 许晓 ; 林梅钦 ; 董朝霞
- 英文论文作者：Hongfa Liu ; Feifei Sun ; Xiao Xv ; Meiqin Lin ; Zhaoxia Dong ; Enhanced Oil Recovery Institute ; China University of Petroleum
- 年：2016
- 作者机构：中国石油大学(北京)提高采收率研究院;
- 论文关键词：纳米复合凝胶 ; 粘附力 ; 质构仪 ; 不锈钢 ; 聚四氟乙烯
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十一分会：胶体与界面化学
- 语种：中文
- 分类号：O648.17;O647.4
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十一分会 ; 胶体与界面化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：184k
- 原文格式：D
- 会议级别：全国
摘要
以2wt%聚丙烯酰胺为主剂,0.2wt%乙酸铬为交联剂,不同浓度的蒙脱土(1~10wt%)为结构增强剂制备蒙脱土-聚合物复合凝胶,采用质构仪对复合凝胶与接触基质间的宏观粘附力进行定量研究,测量了复合凝胶与不同接触基质(不锈钢、聚四氟乙烯)之间的粘附力,考察了增强剂浓度对粘附力的影响,并进一步分析接触材质对粘附力差异的影响。结果表明,复合凝胶与接触基质间的宏观粘附力与基质的材质有关,由此复合凝胶与不锈钢基质的粘附力始终大于其与聚四氟乙烯基质的粘附力,这是由于二者之间粘附力与基质的界面特性及复合凝胶在基质表面的键合强度有关。此外,蒙脱土的浓度对粘附力影响显著。当蒙脱土浓度在0-5wt%,二者之间的粘附力逐渐增大;尤其是蒙脱土含量为5wt%时,二者粘附力达到峰值,复合凝胶与不锈钢、聚四氟乙烯之间的粘附力分别为14900Pa和3011.82Pa。但当蒙脱土浓度高于5wt%后,二者粘附力均持续降低。
MMT-based nanocomposite hydrogel was prepared using 2wt%polyacrylamide,0.2wt%chromium acetate crosslinker and MMT(l~10wt%) enhancer.Texture Analyser was adapted to measure the adhesion force between hydrogel and contact substrates(stainless steel or PTFE) quantitatively,investigate the effect of MMT content and contacting materials to the adhesion force.The results showed that the adhesion force between hydrogel and stainless steel is higher than PTFE,since the force was related to the interfacial properties of substrate,as well as the bonding strength of hydrogel on substrate surface.Additionally,adhesion force increased while the MMT was0~5wt%,for different contacting substrates of stainless steel and PTFE,their peak adhesion force were 14900 Pa and 3011.82 Pa,respectively,when MMT content reached 5wt%,but decreased with MMT content higher than 5%.
MMT-based nanocomposite hydrogel was prepared using 2wt%polyacrylamide,0.2wt%chromium acetate crosslinker and MMT(l~10wt%) enhancer.Texture Analyser was adapted to measure the adhesion force between hydrogel and contact substrates(stainless steel or PTFE) quantitatively,investigate the effect of MMT content and contacting materials to the adhesion force.The results showed that the adhesion force between hydrogel and stainless steel is higher than PTFE,since the force was related to the interfacial properties of substrate,as well as the bonding strength of hydrogel on substrate surface.Additionally,adhesion force increased while the MMT was0~5wt%,for different contacting substrates of stainless steel and PTFE,their peak adhesion force were 14900 Pa and 3011.82 Pa,respectively,when MMT content reached 5wt%,but decreased with MMT content higher than 5%.
引文
[1]Jiang,Y.;Li,B.;Chen,X.;Zhu,M.J.Appl.Polym.Sci.2012,125:E148-E156.
[2]Feifei Sun,Meiqin Lin,Zhaoxia Dong,et al.Journal of colloid and interface science.2015,458:45-52.
[2]Feifei Sun,Meiqin Lin,Zhaoxia Dong,et al.Journal of colloid and interface science.2015,458:45-52.