Professor Can Erkey先生講演会のお知らせ
大学院ゲストスピーカー講演会
日時:10月1日(月) 2時限目 (10:40~12:10)
場所:3300号室
講師: Professor Can Erkey
Chemical and Biological Engineering Dept.
Koc University, Turkey
講演題目:
Demixing Pressures of Hydroxy-terminated Polydimethylsiloxane \x{2013} Carbon
Dioxide Binary Mixtures for Reactive Supercritical Deposition
反応を伴う超臨界堆積についての末端水酸基を有するポリジメチルシロキサン-二酸化
炭素2成分系混合物の偏析圧力
講演要旨
The reactive deposition using supercritical fluids (SCFs) has been attracting
increasing attention for the modification of a wide variety of surfaces. Among
the SCFs, supercritical CO2 (scCO2) is particularly attractive since it is non-
toxic, cheap and leaves no residue on the treated surface. A prominent
application of reactive deposition with scCO2 is to convert a hydrophilic
surface to a hydrophobic one. One of the surface modification agents which can
be used for such surface modification applications is hydroxy(OH)-terminated
polydimethylsiloxane (PDMS(OH)) which is a highly CO2-philic polymer and its
highly reactive terminal hydroxyl groups can react with surface hydroxyl
groups. In this study, we investigated the applicability of PDMS(OH) for the
modification of various oxide surfaces from scCO2. Since the knowledge of the
phase behaviour of the binary mixtures is necessary for design of CO2 based
processes for such surface modification applications, we investigated the
phase behavior of PDMS(OH)-CO2 binary mixture. We utilized two different
molecular weight PDMS(OH) and determined the demixing pressures at various
compositions and temperatures. The demixing pressures were found to increase
with increasing CO2 fraction at a constant temperature, with increasing
molecular weight of the polymer and with temperature at a constant
composition. Furthermore, we modeled the phase behavior by using Sanchez-
Lacombe Equation of State (SLEoS) and determined the binary interaction
parameters for these mixtures.
Prof. C. Erkey先生のご略歴
1989年 Ph.D., Chemical Engineering, Texas A&M University, College Station,
Texas
~1994年 Texas A&M University
~2006年 Professor, University of Connecticut
~present Professor, KoD?? University, Istanbul, Turkey
Editorial Board, The Journal of Supercritical Fluids (Elsevier)
講演は英語ですが、随時、解説を加えます。
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