Dynamic behavior and fractional analysis of dilute rigid polymer solutions using packed hydrodynamic chromatography = 충전된 수력학적크로마토그래피에 의한 희박한 경직 고분자용액의 동력학적 거동과 분리해석

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 195
  • Download : 0
Recently, hydrodynamic chromatography (HDC) has become an important probe for determining the molecular size or molecular shape in the sub-micron range. Porous media flow within packed HDC column has attracted important attention because in which confined geometries have a great influence on dynamics of polymer molecules; e.g., flow-induced conformation of polymer chains. Although considerable work has been devoted to HDC analysis, the clear understanding on the transport behavior of polymer solutions in porous media has not been achieved yet. In this present study, the flow and dynamic behavior of rigid rodlike polymer molecules in a packed HDC column is fully analyzed by extending the molecular theory of dilute polymer solution in a confined geometry in order to elucidate quantitatively the effects of arbitrary particle sizes as well as of flow strength on the dimensionless separation parameter, namely, retention factor ($R_f$). $R_f$ equations of each simple polymer model, i.e. isotropic single Brownian(SB) and rigid dumbbell (RD), were developed, and then numerical simulations were clearly worked out to illustrate the $R_f$ for rigid rod (RR) poymer. Remarkably, theoretical predictions were in close agreement with the present experimental results of RR polymer via xanthan gum, that is water-soluble high molecular weight biopolymer, and other previously published data of SB model particles despite of several approximations. The $R_f$ value showed the gradual increasing behavior as particle size (i.e., ∈ parameter) increased, however, for RR model the $R_f$ decreased with increasing the flow strength within a particular range of about 0 < log β < 3. Additionally, in the outside of this region the significant flow-independent $R_f$ behavior could be observed. This feature emphasized a transition behavior from weak to strong flow due to the flow-induced orientational effect of xanthan molecules. In order to analyze the fractionation of xanthan polymer cal...
Advisors
Park, O-Okresearcher박오옥researcher
Description
한국과학기술원 : 화학공학과,
Publisher
한국과학기술원
Issue Date
1990
Identifier
67222/325007 / 000881425
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 화학공학과, 1990.2, [ vii, 80 p. ]

URI
http://hdl.handle.net/10203/30399
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=67222&flag=dissertation
Appears in Collection
CBE-Theses_Master(석사논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0