Kinetic and equilibrium studies associated with the binding of surface-active agents to macromolecules
Kinetic and equilibrium studies associated with the binding of surface-active agents to macromolecules
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与表面活性剂与大分子结合相关的动力学和平衡研究
DOI：
10.1039/f29827800657
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发表时间：
1982
期刊：
影响因子：
--
通讯作者：
E. Wyn
中科院分区：
文献类型：
--
作者：
D. Bloor;E. Wyn
通过平衡（芘单体荧光）和动力学（压力跳变）实验，研究了十二烷基硫酸钠（SDS）与几种大分子的相互作用。研究了四种类型的体系，即：SDS/聚（n-乙烯基吡咯烷酮）（PVP），一种烃溶性聚合物；SDS/聚乙二醇（PEG），一种烃类不溶性聚合物；牛血清白蛋白（BSA），一种蛋白质；SDS/聚苯乙烯乳胶（PSL），一种胶体聚合物。平衡和动力学实验共同揭示了每种情况下不同类型的相互作用机制。PVP和PEG作为胶束位于聚合物链上和沿着聚合物链的核，鼓励和促进胶束的形成。然而，发现BSA和PSL对胶束结合过程相对不受影响。
The interactions between sodium dodecyl sulphate (SDS) and several types of macromolecules were studied by means of equilibrium (pyrene monomer fluorescence) and kinetic (pressure-jump) experiments. Four types of systems have been examined, namely: SDS/poly(N-vinylpyrrolidone)(PVP), a hydrocarbon-soluble polymer; SDS/poly(ethylene glycol)(PEG), a hydrocarbon-insoluble polymer; SDS/bovine serum albumin (BSA), a protein; SDS/polystyrene latex (PSL), a colloidal polymer. Together the equilibrium and kinetic experiments reveal a differing type of interaction mechanism in each case. PVP and PEG encourage and promote micelle formation by acting as nuclei for such aggregates with the micelles situated on and along the polymer chain. BSA and PSL, however, were found to leave the micellar association process relatively unaffected.