Studies on surfactant-biopolymer interaction. I. Microcalorimetric investigation on the interaction of cetyltrimethylammonium bromide (CTAB) and sodium dodecylsulfate (SDS) with gelatin (Gn), lysozyme (Lz) and deoxyribonucleic acid (DNA)
Studies on surfactant-biopolymer interaction. I. Microcalorimetric investigation on the interaction of cetyltrimethylammonium bromide (CTAB) and sodium dodecylsulfate (SDS) with gelatin (Gn), lysozyme (Lz) and deoxyribonucleic acid (DNA)
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DOI：
10.1016/s0301-4622(02)00107-2
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发表时间：
2002-08-02
影响因子：
3.8
通讯作者：
Sanyal, SK
中科院分区：
文献类型：
--
作者：
Chatterjee, A;Moulik, SP;Sanyal, SK
采用等温滴定微热法研究了表面活性剂十六烷基三甲基溴化铵（CTAB）和十二烷基硫酸钠（SDS）在不同生物聚合物浓度、pH和温度下与明胶（Gn）、溶菌酶（Lz）和脱氧核糖核酸（DNA）的相互作用。表面活性剂与生物聚合物相互作用的性质由观察到的焓-[表面活性剂]谱来评估。观察到生物聚合物诱导的表面活性剂聚集。估计了两亲体的聚集焓、聚集体与大分子的结合、结合聚集体的组织变化以及在生物聚合物存在下表面活性剂胶束形成的阈值浓度。对三种生物聚合物的检测结果进行了分析和比较。(C) 2002 Elsevier Science B.V.版权所有
The interaction of the surfactants cetyltrimethyl ammonium bromide (CTAB) and sodium dodecyl sulfate (SDS) with the biopolymers gelatin (Gn), lysozyme (Lz) and deoxyribonucleic acid (DNA) was studied by isothermal titration microcalorimetry at varied biopolymer concentration, pH and temperature. The nature of interaction of the surfactants with the biopolymers was assessed from the observed enthalpy-[surfactant] profiles. The biopolymer-induced aggregation of the surfactants was observed. The enthalpies of aggregation of amphiphiles, binding of aggregates with macromolecules, organisational change of bound aggregates, and threshold concentrations for micelle formation of surfactants in the presence of biopolymers were estimated. The results collected on the three biopolymers were analysed and compared. (C) 2002 Elsevier Science B.V. All rights reserved.