THERMOREVERSIBLE GELATION AND PHASE SEPARATION IN AQUEOUS METHYL CELLULOSE SOLUTIONS

APPC 2000 ◽  
2001 ◽  
Author(s):  
M. TAKAHASHI ◽  
M. SHIMAZAKI
Keyword(s):  
Phase Separation ◽  
Methyl Cellulose ◽  
Thermoreversible Gelation

Thermoreversible gelation and phase separation in aqueous methyl cellulose solutions

2000 ◽  
Vol 39 (1) ◽  
pp. 91-100 ◽  
Author(s):  
Masae Takahashi ◽  
Masako Shimazaki ◽  
Jun Yamamoto
Keyword(s):  
Phase Separation ◽  
Methyl Cellulose ◽  
Thermoreversible Gelation

Interplay of Phase Separation and Thermoreversible Gelation in Aqueous Methylcellulose Solutions

2012 ◽  
Vol 46 (1) ◽  
pp. 300-309 ◽  
Author(s):  
S. A. Arvidson ◽  
J. R. Lott ◽  
J. W. McAllister ◽  
J. Zhang ◽  
F. S. Bates ◽  
...  
Keyword(s):  
Phase Separation ◽  
Thermoreversible Gelation

LCST phase separation and thermoreversible gelation in aqueous solutions of stereo-controlled poly(N-isopropylacrylamide)s

2013 ◽  
Vol 73 (7) ◽  
pp. 894-897 ◽  
Author(s):  
Fumihiko Tanaka ◽  
Yukiteru Katsumoto ◽  
Shinya Nakano ◽  
Rio Kita
Keyword(s):  
Phase Separation ◽  
Aqueous Solutions ◽  
Thermoreversible Gelation

Laser speckle analysis on correlation between gelation and phase separation in aqueous methyl cellulose solutions

2009 ◽  
Vol 48 (2) ◽  
pp. 168-174 ◽  
Author(s):  
Hiroki Takeshita ◽  
Keiichi Saito ◽  
Masamitsu Miya ◽  
Katsuhiko Takenaka ◽  
Tomoo Shiomi
Keyword(s):  
Phase Separation ◽  
Methyl Cellulose ◽  
Laser Speckle

scholarly journals Dependence of Molecular Weight on Phase Diagram of Methyl Cellulose Solution Showing Thermoreversible Gelation.

1998 ◽  
Vol 55 (5) ◽  
pp. 269-276 ◽  
Author(s):  
Masae TAKAHASHI ◽  
Masako SHIMAZAKI ◽  
Jun YAMAMOTO
Keyword(s):  
Phase Diagram ◽  
Molecular Weight ◽  
Methyl Cellulose ◽  
Cellulose Solution ◽  
Thermoreversible Gelation

In Situ Observations of Thermoreversible Gelation and Phase Separation of Agarose and Methylcellulose Solutions under High Pressure

2015 ◽  
Vol 119 (22) ◽  
pp. 6878-6883 ◽  
Author(s):  
Noritsugu Kometani ◽  
Masahiro Tanabe ◽  
Lei Su ◽  
Kun Yang ◽  
Katsuyoshi Nishinari
Keyword(s):  
High Pressure ◽  
Phase Separation ◽  
Thermoreversible Gelation ◽  
In Situ Observations

scholarly journals Tensiometric investigation of the interaction and phase separation in a polymer mixture-ionic surfactant ternary system

2010 ◽  
Vol 75 (6) ◽  
pp. 823-831 ◽  
Author(s):  
Jaroslav Katona ◽  
Verica Sovilj ◽  
Lidija Petrovic ◽  
Nenad Mucic
Keyword(s):  
Surface Tension ◽  
Phase Separation ◽  
Complex Formation ◽  
Ternary Mixture ◽  
Sodium Dodecylsulfate ◽  
Methyl Cellulose ◽  
Ternary Mixtures ◽  
Polymer Mixture ◽  
Ionic Surfactant ◽  
Saturation Point

The interaction and phase separation in a ternary mixture composed of hydroxypropyl methyl cellulose (HPMC), sodium carboxymethyl cellulose (NaCMC), and sodium dodecylsulfate (SDS) were investigated by tensiometry. Surface tension measurements of binary mixtures (0.7 % HPMC and 0.00-2.00 % SDS) and of ternary mixtures (0.7 % HPMC, 0.3 % NaCMC, and 0.00-2.00 % SDS) were performed. The measurements indicated interaction between HPMC and SDS, which resulted in HPMC-SDS complex formation. The critical association concentration, CAC, and polymer saturation point, PSP, were determined. Phase separation of ternary HPMC/SDS/NaCMC mixtures occurs at SDS concentration > CAC, i.e., when the HPMC-SDS complex is formed. The volume of the coacervate increases with increasing SDS concentration, and at SDS concentrations >1.00 %, the coacervate vanishes. The surface tensions (?) of ternary HPMC/SDS/NaCMC mixtures in the precoacervation region and at the onset of the coacervation region are similar to the ? of the corresponding binary HPMC-SDS mixtures, while in the coacervation and post coacervation region, they are close to the ? of the corresponding SDS solutions.

Hepatocyte Alterations in Guinea Pigs FED Polychlorinated Biphenyls (PCBs), Dibenzodioxins (PCDD), AND DIBENZOFURANS (PCDF)

1982 ◽  
Vol 40 ◽  
pp. 56-57
Author(s):  
J. N. Turner ◽  
D. N. Collins
Keyword(s):  
Guinea Pigs ◽  
Room Temperature ◽  
Dose Group ◽  
Methyl Cellulose ◽  
Uranyl Acetate ◽  
Target Organ ◽  
Office Building ◽  
Lead Citrate ◽  
Control Groups ◽  
Cooling Fluid

A fire involving an electric service transformer and its cooling fluid, a mixture of PCBs and chlorinated benzenes, contaminated an office building with a fine soot. Chemical analysis showed PCDDs and PCDFs including the highly toxic tetra isomers. Guinea pigs were chosen as an experimental animal to test the soot's toxicity because of their sensitivity to these compounds, and the liver was examined because it is a target organ. The soot was suspended in 0.75% methyl cellulose and administered in a single dose by gavage at levels of 1,10,100, and 500mgm soot/kgm body weight. Each dose group was composed of 6 males and 6 females. Control groups included 12 (6 male, 6 female) animals fed activated carbon in methyl cellulose, 6 males fed methyl cellulose, and 16 males and 10 females untreated. The guinea pigs were sacrificed at 42 days by suffocation in CO2. Liver samples were immediately immersed and minced in 2% gluteraldehyde in cacadylate buffer at pH 7.4 and 4°C. After overnight fixation, samples were postfixed in 1% OsO4 in cacodylate for 1 hr at room temperature, embedded in epon, sectioned and stained with uranyl acetate and lead citrate.

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