Results 211 to 220 of about 16,421 (234)
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Self-oscillating gel composed of thermosensitive polymer exhibiting higher LCST
Journal of Controlled Release, 2011We have developed self-oscillating polymers and gels as novel biomimetic materials by utilizing an oscillating reaction, known as the Belousov-Zhabotinsky (BZ) reaction. The self-oscillating polymer gel is composed of a poly(N-isopropylacrylamide) (PNIPAAm) network in which the catalyst for the BZ reaction is covalently immobilized.
Mio, Hidaka, Ryo, Yoshida
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Thermo‐responsive albumin hydrogels with LCST near the physiological temperature
Journal of Applied Polymer Science, 2011AbstractThis paper deals with the synthesis of thermoresponsive microspheres with proteic structure exhibiting a transition temperature close to the body temperature. The hydrogels were synthesized by free radical polymerization of methacrylate Bovine Serum Albumin (BSA‐MA) as crosslinker, and 2‐hydroxyethyl methacrylate (HEMA) and/or N ...
Spizzirri UG +6 more
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Tunable LCST/UCST-Type Polypeptoids and Their Structure–Property Relationship
Biomacromolecules, 2020Bioinspired thermoresponsive polymeric materials with tunable phase-transition behaviors are highly desirable for biomedical applications. Here, we reported a facile approach for the synthesis of both lower critical solution temperature (LCST) and upper critical solution temperature (UCST) types of thermoresponsive polypeptoids with tunable phase ...
Xiaohui Fu, Chao Xing, Jing Sun
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“Isothermal” LCST transitions triggered by bioreduction of single polymer end-groups
Chem. Commun., 2013The α-termini of RAFT-derived thermoresponsive polymers were functionalised via thiol exchange with pyridyl disulfide. Addition of hydrophilic end-groups dramatically increased the observed cloud point of the polymers, without changing the composition of the main chain. Selective cleavage of the disulfide-linked end-groups was observed under conditions
Summers, Matthew J. +2 more
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LCST and UCST-type thermoresponsive behavior in dendronized gelatins
Polymer Chemistry, 2022Through dendronization with OEGs, gelatins show dual LCST- and UCST-type thermoresponsive behavior, as well as reversible sol–gel transitions.
Yan Ding, Xiacong Zhang, Biyi Xu, Wen Li
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Poly(2-oxazoline) glycopolymers with tunable LCST behavior
Polymer Chemistry, 2011A series of thermo-responsive glyco-poly(2-oxazoline)s based on 2-ethyl-2-oxazoline and 2-(dec-9-enyl)-2-oxazoline were prepared. To study the effect of the sugar content on the solution behavior in water, two sets of copolymers with constant monomer-to-initiator ratios of 20 and 50 and varying amounts of the hydrophobic alkene functionalized monomer ...
Kristian Kempe +5 more
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Precise control of wettability from LCST tunable surface
Journal of Materials Chemistry, 2010In this study, we demonstrated precise control of wettability from a thermally-responsive surface and investigated the effects of chemical composition and surface roughness. By altering feeding manners of initiators during surface grafting process of poly(N-isopropylacrylamide-co-N-isopropylmethylacrylamide) [poly(NIPAAm-co-NIPMAM)], two thermally ...
Tianyi Zhao, Fu-Qiang Nie, Lei Jiang
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Sequence Directionality Dramatically Affects LCST Behavior of Elastin-Like Polypeptides
Biomacromolecules, 2018Elastin-like polypeptides (ELP) exhibit an inverse temperature transition or lower critical solution temperature (LCST) transition phase behavior in aqueous solutions. In this paper, the thermal responsive properties of the canonical ELP, poly(VPGVG), and its reverse sequence poly(VGPVG) were investigated by turbidity measurements of the cloud point ...
Nan K. Li +4 more
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Effects of stereochemistry and copolymerization on the LCST of PNIPAm
The Journal of Chemical Physics, 2017Poly(N-isopropylacrylamide) (PNIPAm) is a smart polymer that presents a lower critical transition temperature (LCST) of 305 K. Interestingly, this transition point falls within the range of the human body temperature, making PNIPAm a highly suitable candidate for bio-medical applications.
Tiago E. de Oliveira +3 more
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A Novel Nanocomposite Hydrogel with Precisely Tunable UCST and LCST
Macromolecular Rapid Communications, 2015Novel thermosensitive nanocomposite (NC) hydrogels consisting of organic/inorganic networks are prepared via in situ free radical polymerization of 2‐(2‐methoxyethoxy) ethyl methacrylate (MEO2MA) and oligo(ethylene glycol) methacrylate (OEGMA) in the presence of inorganic cross‐linker clay in aqueous solution.
Mengge, Xia +6 more
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