(The) viscometric and preferential adsorption behavior of poly(vinylpyrrolidone) in urea-water solution요소 수용액에서 폴리비닐피롤리돈에 대한 요소의 영향과 그 과정에 관한 연구

Poly(vinylpyrrolidone) (PVP) is solube in water solution. PVP is interesting from bilolgical viewpoint, since it has structrural feature similar to those of proteins. Indeed, even in its actual behavior it also shows similarities to proteins. The properties of dilute aqueous solutions of PVP in the presence of ureas(urea, 1, 3-dimethylurea, 1, 1, 3, 3-tetramethylurea) are studied by measurements of intrinsic viscosity,[$\eta$] at 20$^\circ$C. These result are discused on the basis of the nature of the side group interaotion with the solvent and cosolute. It would seem that two types of interactions play an important role at the solution: The first is hydrophobicity increased by increasing methyl groups of ureas and the second is hydrogen bonding in which hydrogen attached by nitrogen of urea can interact with an amide group of PVP. The role of the preferential adsorption of one of the cosolutes on the polymer was also considered.
Advisors
Jhon, Mu-Shik(전무식)researcher
Publisher
한국과학기술원
Issue Date
1991
Identifier
67615/325007 / 000891073
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 화학과, 1991.2, [ v, 33 p. ]

URI
http://hdl.handle.net/10203/32587
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=67615&flag=t
Appears in Collection
CH-Theses_Master(석사논문)
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