Results 21 to 30 of about 10,074 (199)

Phase Transition Behaviors of Poly(N-isopropylacrylamide) Nanogels with Different Compositions Induced by (−)-Epigallocatechin-3-gallate and Ethyl Gallate

Molecules, 2023
Phase transition behaviors of poly(N-isopropylacrylamide) nanogels with different compositions induced by (−)-epigallocatechin-3-gallate (EGCG) and ethyl gallate (EG) has been investigated systematically.
Ke Deng, Yafei Wang, Lei Wang, Xianli Fan, Zhenyu Wu, Xue Wen, Wen Xie, Hong Wang, Zheng Zhou, Pengfei Chen, Xianggui Chen   +10 more
doaj   +1 more source

Water flow in poly(N-isopropylacrylamide) gels

The Journal of Chemical Physics, 2006
Friction between a polymer network of poly(N-isopropylacrylamide) gels and solvent water was investigated. The gel was mechanically constrained in a glass capillary at gelation, and hydrostatic pressure was directly applied to the cross section of the cylinder.
Atsushi, Suzuki, Muneyuki, Yoshikawa
openaire   +2 more sources

Thermoresponsive Al3+-crosslinked poly(N-isopropylacrylamide)/alginate composite for green recovery of lithium from Li-spiked seawater

Green Energy & Environment, 2022
With the rapid increase in the demand for lithium as an energy-critical element, the recovery of Li+ ions from seawater is a worldwide challenging issue.
Sung Ho Park, Sang Joon Lee
doaj   +1 more source

Temperature Driven Transformation in Dextran-Graft-PNIPAM/Embedded Silver Nanoparticle Hybrid System

International Journal of Polymer Science, 2019
During the last decade, stimuli-responsible polymers based on poly(N-isopropylacrylamide) having conformational transition in the range of physiological temperature have been discussed as novel drug delivery nanosystems.
V. Chumachenko, N. Kutsevol, Iu Harahuts, D. Soloviov, L. Bulavin, O. Yeshchenko, A. Naumenko, O. Nadtoka, A. Marinin   +8 more
doaj   +1 more source

Phase Transition Behavior of Poly(N-isopropylacrylamide-co-N,Ndimethylaminopropylacrylamide) Hydrogels

Eurasian Chemico-Technological Journal, 2002
The copolymer hydrogel of N-isopropylacrylamide (NIPAAm) and N,N-dimethylaminopropylacrylamide (DMAPAA) was synthesized by free radical copolymerization.
Eui-Chul Kang, Na-Young Hong, Chun-Hag Jang, Ki-Won Song, Jang-Oo Lee   +4 more
doaj   +1 more source

Green–Light–Driven Poly(N-isopropylacrylamide-acrylamide)/Fe3O4 Nanocomposite Hydrogel Actuators

Frontiers in Materials, 2022
Light-responsive hydrogel actuators show attractive biomedical applications for in vivo drug delivery tool, surgical tissue repair operation, and vascular cleaning due to its non-contact, rapid, precise, and remote spatial control of light.
Ying Cao, Ying Cao, Wenjiao Li, Fengyu Quan, Fengyu Quan, Yanzhi Xia, Yanzhi Xia, Zhong Xiong, Zhong Xiong   +8 more
doaj   +1 more source

Synthesis, rheological behavior and swelling properties of copolymer hydrogels based on poly(N-isopropylacrylamide) with hydrophilic monomers

Bulletin of the Chemical Society of Ethiopia, 2013
In this study, hydrogels of poly(N-isopropylacrylamide-co-acrylamide) and poly(N-isopropylacrylamide-co-acrylic acid) having a thermoresponsive character were prepared by aqueous free-radical co-polymerization using the ammonium persulfate/N,N,N',N ...
D. Aliouche, N. Seddiki
doaj   +1 more source

Stimuli‐Responsive Hierarchical Structuring Controls Survival and Programs Hydrogelation of Supramolecular Metallofibers

Advanced Materials, EarlyView.
Aqueous Zn(II) Salphen metallofibers decorated with PNIPAM undergo reversible, multi‐stimuli‐responsive hierarchical bundling. This higher‐order structuring kinetically stabilizes the otherwise fragile assemblies against dilution, acidic hydrolysis, and transmetallation, enables selective sorting of responsive fibers, and programs hydrogelation at ...
Merlin R. Stühler, László Mérai, Kai Ludwig, Rainer Haag, Quinn A. Besford, Alex J. Plajer   +5 more
wiley   +1 more source

Phase Diagrams of Smart Copolymers Poly(N-isopropylacrylamide) and Poly(sodium acrylate)

The Scientific World Journal, 2014
The phase behavior of linear poly(N-isopropylacrylamide) (PNIPA), linear copolymer poly(N-isopropylacrylamide) and poly(sodium acrylate) (PNIPA-SA), and chemically cross-linked PNIPA in water has been determined by temperature modulated differential ...
Iwona Zarzyka, Maria Laura Di Lorenzo, Marek Pyda   +2 more
doaj   +1 more source

Tuning the Fast Dynamics of PNIPAM-Based Systems with Bio-Cosolvents

Proceedings, 2019
Smart polymers as poly-N-isopropylacrylamide (PNIPAM) are well known due to their fast response to variations of parameters like temperature, pH, and pressure. [...]
Benedetta Petra Rosi, Lucia Comez, Paola Sassi, Monica Bertoldo, Elena Buratti, Caterina Petrillo, Alessandro Paciaroni, Silvia Corezzi, and Andrea Orecchini   +8 more
doaj   +1 more source