对于高分子流体流动特性的研究不仅能够判断该流体的应用价值,而且还可以用于分析流体内部的结构特点和结构演变过程,建立流体的结构与性能关系.以羟乙基纤维素(HEC)为研究对象,研究了HEC在水-乙醇和水-乙二醇溶液体系中的流动性质.结果表明,HEC/水-乙醇溶液会发生从触变性到反触变性的转变,溶液稳态黏度随着乙醇体积分数的增加先升后降;HEC/水-乙二醇溶液的流动特性更加复杂,虽然也会发生从触变性到反触变性的转变,但是,相对低浓度的HEC溶液的稳态黏度随乙二醇体积分数的增加线性增长,而相对高浓度的HEC溶液的稳态黏度却在乙二醇体积分数为15％和40％处出现两个极大值.结果表明:在体系中引入乙醇和乙二醇后,由于非溶剂效应以及两种醇分子与HEC分子间的氢键作用,使得HEC在溶液中产生了不同的聚集状态,该聚集状态在持续剪切的作用下又不断发生改变,从而影响了溶液的流动性质.
参考文献
| [1] | 严瑞瑄.水溶性高分子[M].北京:化学工业出版社,1998:504. |
| [2] | Laura Gilbert;Céline Picard;Géraldine Savary et al.Rheological and textural characterization of cosmetic emulsions containing natural and synthetic polymers:Relationships between both data[J].Colloids Surf A:Physicochem Eng Aspects,2013,421:150. |
| [3] | Gupta,P.N.;Pattani,A.;Curran,R.M.;Kett,V.L.;Andrews,G.P.;Morrow,R.J.;Woolfson,A.D.;Malcolm,R.K. .Development of liposome gel based formulations for intravaginal delivery of the recombinant HIV-1 envelope protein CN54gp140[J].European journal of pharmaceutical sciences,2012(5):315-322. |
| [4] | 李伟,路福绥,翟利利,王祜英,郭雯婷.不同相对分子质量羟乙基纤维素对甲维盐微胶囊制备的影响[J].应用化学,2011(10):1108-1113. |
| [5] | 窦家林,李杨,张春庆,韩冰,王玉荣.复合分散体系苯乙烯悬浮聚合的研究[J].合成树脂及塑料,2011(06):17-21. |
| [6] | 李永鹏,何锐,陈拴发,嵇绍华.聚丙烯酰胺与羟乙基纤维素对砂浆性能的影响[J].武汉理工大学学报,2012(07):28-31. |
| [7] | 蹇守卫,马保国,苏雷,李相国,穆松,袁龙.纤维素醚改性砂浆的研究进展[J].硅酸盐通报,2011(03):560-566. |
| [8] | Calejo, M.T.;Kjoniksen, A.-L.;Marques, E.F.;Araújo, M.J.;Sande, S.A.;Nystr?m, B. .Interactions between ethyl(hydroxyethyl) cellulose and lysine-based surfactants in aqueous media[J].European Polymer Journal,2012(9):1622-1631. |
| [9] | Guangqiang Zhao;Shing Bor Chen .Nonlinear rheology of aqueous solutions of hydrophobically modified hydroxyethyl cellulose with nonionic surfactant[J].Journal of Colloid and Interface Science,2007(2):858-866. |
| [10] | Patruyo LG.;Muller AJ.;Saez AE. .Shear and extensional rheology of solutions of modified hydroxyethyl celluloses and sodium dodecyl sulfate[J].Polymer: The International Journal for the Science and Technology of Polymers,2002(24):6481-6493. |
| [11] | 徐强,杨成.表面活性剂对十六烷基羟乙基纤维素溶液黏度的影响[J].日用化学工业,2009(04):223-226. |
| [12] | 马德柱;何平笙;徐种德.高聚物的结构与性能[M].北京:科学出版社,1995:522. |
| [13] | 江明;Eisenberg A;刘国军.大分子自组装[M].北京:科学出版社,2006:81. |
| [14] | Rosalía Rodríguez;Carmen Alvarez-Lorenzo;Angel Concheiro .Cationic cellulose hydrogels:Kinetics of the crosslinking process and characterization as pH-/ion-sensitive drug delivery systems[J].Journal of Controlled Release,2003,86(2-3):253. |
| [15] | Bao Wang;Li-Jun Wang;Dong Li .Rheological properties of waxy maize starch and xanthan gum mixtures in the presence of sucrose[J].Carbohydrate Polymers: Scientific and Technological Aspects of Industrially Important Polysaccharides,2009(3):472-481. |
| [16] | Lee, CH;Moturi, V;Lee, YY .Thixotropic property in pharmaceutical formulations[J].Journal of Controlled Release: Official Journal of the Controlled Release Society,2009(2):88-98. |
| [17] | Araki J.;Kuga S.;Okano T.;Wada M. .Flow properties of microcrystalline cellulose suspension prepared by acid treatment of native cellulose[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,1998(1):75-82. |
| [18] | Sara Naji;Seyed MA Razavi;Hojjat Karazhiyan .Effect of thermal treatments on functional properties of cress seed (Lepidium sativum) and xanthan gums: A comparative study[J].Food hydrocolloids,2012(1):75-81. |
| [19] | Arfin, N.;Bohidar, H.B. .Concentration selective hydration and phase states of hydroxyethyl cellulose (HEC) in aqueous solutions[J].International Journal of Biological Macromolecules: Structure, Function and Interactions,2012(3):759-767. |
| [20] | Lara Matia-Merino;Kelvin Kim Tha Goh;Harjinder Singh .A natural shear-thickening water-soluble polymer from the fronds of the black tree fern, Cyathea medullaris: Influence of salt, pH and temperature[J].Carbohydrate Polymers: Scientific and Technological Aspects of Industrially Important Polysaccharides,2012(1):131-138. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%