凝胶因子凝胶能力的测定方法及其预测模型探讨
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- 英文论文题名：A discussion on test methods and prediction models of gelation ability of gelators
- 论文作者：张楠祥 ; 林鹏 ; 刘佳慧 ; 陈世鹏 ; 张宝 ; 宋健
- 英文论文作者：Nanxiang Zhang ; Peng Lin ; Jiahui Liu ; Shipeng Chen ; Bao Zhang ; Jian Song ; School of Chemical Engineering and Technology ; Tianjin University ; Tianjin Engineering Research Center of Functional Fine Chemicals ; The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin
- 年：2016
- 作者机构：天津大学化工学院;天津市功能精细化学品技术工程中心;天津大学协同创新中心;
- 论文关键词：凝胶预测 ; 饱和浓度 ; 混合溶剂 ; F-H参数
- 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-第二十四分会：超分子组装与软物质材料
- 语种：中文
- 分类号：O648.17
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十四分会 ; 超分子组装与软物质材料
- 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：210k
- 原文格式：D
- 会议级别：全国
摘要
超分子凝胶由于独特的物理及化学性质和潜在的应用价值,引起广泛关注。可凝胶溶剂的预测是超分子凝胶领域的研究热点,其工作基础是凝胶因子的凝胶能力,一般是在低浓度(1-3%,w/v)条件下测定的。本文将凝胶因子2,4-(3,4-二氯苯亚甲基)-D-山梨醇(DCBS)在35种溶剂中,分别测试了浓度为2%(w/v)及饱和浓度两种情况下的凝胶性能;继而测定了DCBS在19组混合溶剂中的凝胶性能。结果表明,应该选择室温饱和条件来判定溶剂的被凝胶能力,采用低浓度(1-3%,w/v)测定凝胶能力的方法是不够严谨的。DCBS在混合溶剂中的凝胶能力取决于混合溶剂中的某一溶剂是否是可被凝胶溶剂。对于不易溶解凝胶因子的溶剂,高温高压下测定其凝胶性能是更准确的方法。F-H参数与DCBS的混合溶剂凝胶性能关联结果表明,F-H参数的预测结果依赖于所选进行混合的纯溶剂的初始F-H参数值。
The gelation ability of a low molecular weight gelator 2,4-(3,4-dichlorobenzylidene)-D-sorbitol(DCBS) in a binary solvent system and 35 kinds of pure solvents has been studied. Whether the mixed solvent systems of good solvent and poor solvent could form the gel or not depends on the gelation behavior of the gelator in the initial pure solvents. DCBS was insoluble in boiling chloroform and no gel formed after cooling the system. However, the system formed a gel in the condition of higher pressure and higher temperature. The gelation ability of DCBS in mixed organic solvents were correlated with Flory–Huggins parameter, and the prediction based on the association depends on the F-H parameter values of the initial pure solvents.
The gelation ability of a low molecular weight gelator 2,4-(3,4-dichlorobenzylidene)-D-sorbitol(DCBS) in a binary solvent system and 35 kinds of pure solvents has been studied. Whether the mixed solvent systems of good solvent and poor solvent could form the gel or not depends on the gelation behavior of the gelator in the initial pure solvents. DCBS was insoluble in boiling chloroform and no gel formed after cooling the system. However, the system formed a gel in the condition of higher pressure and higher temperature. The gelation ability of DCBS in mixed organic solvents were correlated with Flory–Huggins parameter, and the prediction based on the association depends on the F-H parameter values of the initial pure solvents.
引文
[1]Richard G.Weiss.J.Am.Chem.Soc..2014,136:7519.
[2]Y.Lan,M.G.Corradini,R.G.Weiss,S.R.Raghavan,M.A.Rogers.Chem.Soc.Rev,2015,44:6035.
[3]Julien Bonnet,Gad Suissa,Matthieu Raynal,Laurent Bouteiller.Soft Matter,2015,11:2308.
[2]Y.Lan,M.G.Corradini,R.G.Weiss,S.R.Raghavan,M.A.Rogers.Chem.Soc.Rev,2015,44:6035.
[3]Julien Bonnet,Gad Suissa,Matthieu Raynal,Laurent Bouteiller.Soft Matter,2015,11:2308.