Results 171 to 180 of about 5,986 (191)
Some of the next articles are maybe not open access.
Smart “Thrombus”: Self-Localizing UCST-Type Microcage
ACS Macro Letters, 2023Embolization is often used to block blood supply for controlling the growth of fibroids and malignant tumors, but limited by embolic agents lacking spontaneous targeting and post-treatment removal. So we first adopted nonionic poly(acrylamide-co-acrylonitrile) with an upper critical solution temperature (UCST) to build up self-localizing microcages by ...
Shenglong Gan +8 more
openaire +2 more sources
The permanent ureterocutaneostomy (UCST)
International Urology and Nephrology, 1992During a period of eleven years, ureterocutaneostomy (UCST) as a permanent urinary diversion was performed in 44 highly selected patients. Postoperative complications, in particular stenoses or strictures, can be avoided if subtle operative techniques are applied. Ureterocutaneostomy, which is functionally similar to an incontinent ileal conduit, turns
G, Wandschneider +3 more
openaire +2 more sources
Triple Hydrophilic UCST–LCST Block Copolymers
Macromolecules, 2016Thermosensitive ABC triblock copolymers with different block lengths and block orders were prepared by reversible addition–fragmentation chain transfer (RAFT) polymerization. Using a nonionic macro-RAFT agent containing poly(ethylene oxide) (PEO, average degree of polymerization 17), either N-acryloylglycinamide (NAGA) or N-isopropylacrylamide (NIPAM ...
Lauri Mäkinen +3 more
openaire +1 more source
Counterion-Induced UCST for Polycations
Macromolecules, 2014A method to promote upper crit. soln. temp. (UCST) type of behavior for polycations is introduced. This relies on in situ introduction of a hydrophobic anion to an aq. soln. of a polycation in the presence of sufficient ionic strength. This was studied using two polycations: poly(2-methacryloyloxyethyltrimethylammonium iodide) and poly(3-methyl-1-(4 ...
Karjalainen Erno +2 more
openaire +1 more source
Design of an LCST–UCST-Like Thermoresponsive Zwitterionic Copolymer
Langmuir, 2021Thermoresponsive polymers that possess both UCST- and LCST-like behaviors have generally been designed using diblock copolymers that are mostly composed of an LCST-like polymer and a UCST polymer. Herein, we prepared an LCST-UCST-type polymer composed of UCST-like thermoresponsive zwitterionic sulfabetaine methacrylate and nonthermoresponsive PEG ...
Nobuyuki Morimoto, Masaya Yamamoto
openaire +2 more sources
LCST–UCST-Based Copolymerizations
2011It was shown in Chap. 3 that a polymerization system can start as a conventional precipitation system and end as an FRRPP system, especially if the phase diagram exhibits an hourglass-shaped phase envelope at relatively high polymer molecular weight. This sets up the arguments for other types of shifts from UCST- and LCST-based chain polymerizations ...
Gerard Caneba, Yadunandan Dar
openaire +1 more source
Highly Ordered Polypeptide with UCST Phase Separation Behavior
Journal of the American Chemical Society, 2018Manipulating phase separation structures of thermoresponsive polymers will enhance the usefulness of structure-controllable materials in fields such as drug delivery and tissue engineering. However, behaviors of upper critical solution temperature (UCST) have been less investigated so far, despite the importance of UCST.
Sotaro Kuroyanagi +6 more
openaire +2 more sources
Charge-Determined LCST/UCST Behavior in Ionic Polypeptoids
Biomacromolecules, 2018Stimuli-responsive polymers have received increasing interest for a variety of applications. Here, we report a series of unique charge-determined thermoresponsive polypeptoids synthesized by a combination of ring-opening polymerization and click chemistry.
Chao Xing +4 more
openaire +2 more sources
Polymer Chemistry, 2019
A multi-stimuli responsive tryptophan-based styryl homopolymer and polyzwitterions with solvent-induced UCST, ion-induced LCST and pH-induced UCST under different conditions are presented.
Somdeb Jana +4 more
openaire +1 more source
A multi-stimuli responsive tryptophan-based styryl homopolymer and polyzwitterions with solvent-induced UCST, ion-induced LCST and pH-induced UCST under different conditions are presented.
Somdeb Jana +4 more
openaire +1 more source
Bundling Process of Citrulline Polypeptides upon UCST-Type Phase Separation
The Journal of Physical Chemistry B, 2020Ureido-modified poly(l-citrulline) (l-ornithine-co-l-citrulline denoted by PlOC) shows UCST-type phase separation behavior even under physiologically relevant conditions, which forms an α-helix structure above its phase separation temperature (Tp) but transforms into a solid-like aggregation composed of regular hexagonal packed cylinders below the Tp ...
Shota Fujii +7 more
openaire +2 more sources