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Thermoresponsive dendronized polymers with tunable lower critical solution temperatures
Chemical Communications, 2008A series of first (PG 1) and second generation (PG 2) dendronized polymers were synthesized which exhibit fast and sharp phase transitions with negligible hystereses in aqueous solutions and apparent lower critical solution temperatures (LCSTs) in the range of 33-49 degrees C.
Li W, Zhang A, Schlüter AD
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Lower critical solution temperatures of polybutadiene solutions
Journal of Polymer Science Part B: Polymer Letters, 1967Abstract The lower critical solution temperature (LCST) is observed in polymer solvent systems as a rather high temperature above which the solution separates into two phases. This is a relatively recently discovered phenomenon, since it normally occurs above the boiling point of the solvent.
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Transport Functions of Polymers with a Lower Critical Solution Temperature
Polymer Science, Series B, 2019Polymeric derivatives of proteins are synthesized by the reaction of the amino groups of proteins with N,N-diethylacrylamides containing terminal carboxyl groups, having a molecular weight of (13–62) × 103, and exhibiting a lower critical solution temperature of 34–29°C. It is shown for the first time that the lower critical solution temperature of the
I. L. Valuev +2 more
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The Efficiency of Polymer Fractionation at Lower Critical Solution Temperatures
British Polymer Journal, 1978AbstractThe efficiency of a single fractionation step (i.e. of the partition of a given polymer sample between the coexisting phases which form when its solution demixes) is governed by the variation of the mass ratio of the individual P‐mers with chain length.
B. A. Wolf +2 more
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Determination of Lower Critical Solution Temperature of thermosensitive flocculants
Minerals Engineering, 2014Abstract Thermosensitive polymers are gaining increasing interest due to their possible applications as drug delivery systems, flotation agents in mineral ore processing or flocculants in wastewater treatment. Lower Critical Solution Temperature (LCST) is a crucial parameter of thermoresponsive polymers.
Marcin Lemanowicz +4 more
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The structure of polyoxyethylene solutions with lower critical temperatures of mixing
Polymer Science U.S.S.R., 1974The phase equilibrium, light scattering and viscosity of solutions of polyoxyethylene (POE) in water have been studied. The molecular weights, second virial coefficients and size and concentration fluctuations of the macromolecules and particles causing light scattering have been calculated.
A.A. Tager +3 more
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Upper and lower critical solution temperatures in poly (ethylene glycol) solutions
Polymer, 1976Upper and lower critical solution temperatures have been determined for solutions of poly(ethylene glycol) in t-butyl acetate and water over the molecular weight range of Mη = 2.18 × 103 to ∼1020 × 103. The phase diagram for solutions of poly(ethylene glycol) (Mη = 719 × 103) in t-butyl acetate was expressed as the ‘hour glass’ type, while the phase ...
Susumu Saeki +3 more
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Lower critical solution temperature and hydrophobic hydration in aqueous polymer solutions
Colloid & Polymer Science, 1994Phase diagrams of aqueous solutions of poly(N-vinyl caprolactam) (PVCL), N-vinyl caprolactam copolymer with vinylamine (3.8 mol%) (CP(VCL-VA)), and poly(N-vinyl propylacetamide) (PVPA) were shown to be binodal curves with lower critical solution temperatures (LCST) in the range 304–313.5 K and critical concentrations in the range of 0.02–0.08 polymer ...
A. A. Tager +3 more
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Microcalorimetric detection of lower critical solution temperatures in aqueous polymer solutions
The Journal of Physical Chemistry, 1990A sensitive solution microcalorimeter was used to study lower critical solution temperatures (LCSTs) of aqueous polymer solutions. Endotherms with enthalpies on the order of the strength of hydrogen bonds were observed at temperatures concurring with LCSTs detected by classical cloud-point measurements for solutions of poly(N-isopropylacrylamide ...
Schild, Howard G., Tirrell, David A.
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Upper and lower critical solution temperatures in 1‐octanol solutions of polyethylene
British Polymer Journal, 1983AbstractCloud points of 1‐octanol solutions of four linear polyethylene samples having different molecular weights were measured visually in both regions of the upper and lower critical solution temperatures (UCST and LCST). From the (temperature, polymer weight fraction) phase diagrams drawn, the UCST and LCST were determined.
Yoichiro Muraoka +2 more
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