SHERP

Preparation of polymeric fluorosurfactants for dispersion polymerization in supercritical carbon dioxide
초임계 이산화탄소 분산중합을 위한 불소계 고분자 계면활성제의 제조

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Authors
이현석
Advisor
김화용
Issue Date
2003
Publisher
서울대학교 대학원
Keywords
초임계 이산화탄소Supercritical co2분산중합Dispersion polymerization불소계 계면활성제Fluorosurfactant
Description
Thesis (master`s)--서울대학교 대학원 :응용화학부,2003.
Abstract
Recently, supercritical CO2 is becoming an alternative medium to liquid
solvents traditionally employed in polymerization since it is environmentally
benign, inexpensive and non-flammable. In addition, it has easily attainable
critical conditions (Tc=304.25K, Pc=73.8 bar). Unique properties of the
supercritical CO2 such as large solubility and high mass transfer rates provide
advantages in dispersion polymerization of various kinds of monomers. And
the desired products can be easily separated from monomers and solvents
simply by changing the pressure of CO2.
But unfortunately, most common surfactants used in the conventional
polymerization show negligible solubility in scCO2. Only the siloxane and
fluorinated polymeric surfactants have been reported as successful stabilizers
for the dispersion polymerization in scCO2. Therefore, this study focused on
the preparation of new polymeric fluorosurfactants that can be utilized as
effective steric stabilizers. And their stabilizing ability was tested in the
dispersion polymerization of poly(methyl methacrylate) in scCO2.
Language
English
URI
http://dcollection.snu.ac.kr:80/jsp/common/DcLoOrgPer.jsp?sItemId=000000057024

http://hdl.handle.net/10371/68553
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Theses (Master's Degree_화학생물공학부)
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