Stratification in drying film of polymer-colloid mixtures via controlled entanglement of adsorbed polymers on a colloid particle = 콜로이드 입자에 흡착한 고분자의 제어된 얽힘을 통한 증발 상황에서의 고분자-콜로이드 계층화

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The drying of a polymer-colloidal film is important in many areas, such as in printing, spreading and coating, and materials science. An important problem is the structure of dried film, which has a great effect on material properties, is largely dependent on drying conditions. In case of two different size of colloidal mixtures, it is well known that the colloids often stratify, where small colloids are laid upon large colloids at the very strong evaporation condition. Also, the similar stratification tendency of polymer-colloid mixtures, where the size of polymer is much smaller than the size of colloid, has been reported by simulation. However, there have been no experimental studies for the polymer-colloid mixtures yet. Here, we show that the stratification phenomenon can be controlled by modulating the entanglement between colloid-adsorbed polymers in experimental study. From rheological measurement, we find the evidence of entanglement of colloid-adsorbed polymer for non-stratified films, while there are no entanglement characteristics for stratified films.
Advisors
Choi, Siyoungresearcher최시영researcher
Description
한국과학기술원 :생명화학공학과,
Publisher
한국과학기술원
Issue Date
2019
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 생명화학공학과, 2019.2,[iii, 28 p. :]

Keywords

polymer-colloid mixtures▼aself-stratification▼apeclet number▼apolymer brush▼aentanglement▼arheology; 고분자-콜로이드 혼합물▼a자기계층화▼a페클렛 수▼a고분자 브러쉬▼a얽힘▼a유변학

URI
http://hdl.handle.net/10203/266402
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=843240&flag=dissertation
Appears in Collection
CBE-Theses_Master(석사논문)
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