Results 211 to 220 of about 12,271 (224)

Biocompatible poly(N-(ω-acryloyloxy-n-alkyl)-2-pyrrolidone)s with widely-tunable lower critical solution temperatures (LCSTs): a promising alternative to poly(N-isopropylacrylamide)

Polymer Chemistry, 2022
The biocompatible (co)polymers undergoes a thermal stimulus-driven liquid–liquid phase separation and form coacervates above the lower critical solution temperature (LCST). The LCSTs are able to be precisely controlled between 0 °C and 100 °C.
Shin-nosuke Nishimura, Kei Nishida, Tomoya Ueda, Shohei Shiomoto, Masaru Tanaka   +4 more
openaire   +1 more source

Lower critical solution temperature (LCST) and theta temperature of aqueous solutions of nonionic surface active agents of various polyoxyethylene chain lengths

Colloid & Polymer Science, 1988
Cloud points of aqueous solutions of homogeneous poly(oxyethylene)dodecyl ether derivatives (C12(OE)n: n=2–8) and the apparent theta temperatureTθ ap were determined from the abrupt changes in optical transmittance and the temperature dependence of the second virial coefficient obtained by light scattering ...
H. Fujimatsu, S. Ogasawara, S. Kuroiwa
openaire   +1 more source

The lower critical solution temperature (LCST) of non‐polar polymer solutions: An introduction

Polymer Engineering & Science, 1982
AbstractThe phase behavior at high temperatures of non‐polar polymer solutions is discussed in a qualitative way in terms of the free volume theory of liquids developed by Prigogine, Patterson and Flory. This theory is necessary to explain the existence of a Lower Critical Solution Temperature (LCST) in non‐polar polymer solutions and the related ...
openaire   +1 more source

N-Ester-substituted polyacrylamides with a tunable lower critical solution temperature (LCST): the N-ester-substitute dependent thermoresponse

Polymer Chemistry, 2016
New thermoresponsive polymers ofN-ester-substituted polyacrylamides were discovered, and theN-ester-substitute exerting a great influence on the solution property was demonstrated.
Shengli Chen, Yuan Zhang, Ke Wang, Heng Zhou, Wangqing Zhang   +4 more
openaire   +1 more source

Characterization of the molecular weight distribution of isotactic polypropylene by turbidity at the lower critical solution temperature (LCST)

Journal of Polymer Science Part B: Polymer Physics, 1992
AbstractThe molecular weight distribution (MWD) of high‐molecular‐weight isotactic polypropylene is measured by a new method developed for polyethylene (PE) using the turbidity at the lower critical solution temperature (LCST). The attenuation of transmitted light hi is measured at Ti as each fraction i is separated from the solution during a ...
Takouhi Bohossian, Geneviève Delmas
openaire   +1 more source

Zwitterionic poly(sulfobetaine methacrylate)s in water: from upper critical solution temperature (UCST) to lower critical solution temperature (LCST) with increasing length of one alkyl substituent on the nitrogen atom

Polymer Chemistry, 2018
Increasing the alkyl length on nitrogen of the polymer changes behaviour from UCST, to soluble, LCST, and insoluble.
Ning Wang, Bryan T. Seymour, Evan M. Lewoczko, Ethan W. Kent, Ming-Li Chen, Jian-Hua Wang, Bin Zhao   +6 more
openaire   +1 more source

Microcalorimetric Study of the Effects of a Chaotropic Salt, KSCN, on the Lower Critical Solution Temperature (LCST) of Aqueous Poly(N-isopropylacrylamide) (PNIPA) Solutions

Macromolecules, 2009
The LCST phase-transition of aqueous PNIPA solutions in rising concentrations of the strong chaotropic salt KSCN was studied microcalorimetrically by DSC and apparently for the first time by ITC. An endothermic (entropy driven) binding of KSCN onto PNIPA was observed, explained by electrostatic perturbation of hydrophobic hydration by adsorbed ions.
Inna Shechter, Ory Ramon, Irina Portnaya, Yaron Paz, Yoav D. Livney   +4 more
openaire   +1 more source

Thermoresponsive light scattering device utilizing surface behavior effects between polyimide and an ionic liquid-water mixture exhibiting lower critical solution temperature (LCST)-type phase separation

Journal of Applied Physics, 2018
We proposed a thermoresponsive light scattering device that utilizes the surface behavior between polyimide and an ionic liquid-water mixture exhibiting lower critical solution temperature (LCST)-type phase separation. The LCST behavior for an ionic liquid device utilizing the polyimide with and without alkyl side chains was investigated.
Kazuya Goda, Kohki Takatoh, Yusuke Funasako, Makoto Inokuchi   +3 more
openaire   +1 more source

Synthesis of thermoreversible polymers by aminolysis of poly(methyl 2‐(N‐acryloylamino)‐2‐methoxyacetate): Correlations of the lower critical solution temperatures (LCST) with the side group structures and the salt concentration in aqueous systems

Macromolecular Rapid Communications, 1994
Thermoreversible comblike polymers (CH 2 CH[CONHCH(OMe)CONHR]) n and (CH 2 CH[CONHCH(OMe)CONHC 3 H 7 ) x (CH 2 CH[CONHCH(OMe)CONH(CH 2 ) 2 OMe]) y (R= iPr, n-Bu, (CH 2 ) 2 OMe, (CH 2 ) 3 OMe, (CH 2 ) 3 OEt; x/y= 0.25, 0.33, 0.4, 0.5, 0.6, 0.67, 0.75) are synthesized by aminolysis and their LCST in saline aqueous solution is investigated as a function
Helmut Ritter, Anja Stock
openaire   +1 more source

Amphiphilic Alternating Copolymers with an Adjustable Lower Critical Solution Temperature (LCST) and Correlation with Nonspecific Protein Adsorption

ACS Applied Polymer Materials, 2022
Ranajit Barman, Priya Rajdev, Tathagata Mondal, Pradip Dey, Suhrit Ghosh   +4 more
openaire   +1 more source