Results 51 to 60 of about 27,535 (263)

Poly(2-cyclopropyl-2-oxazoline): from rate acceleration by Cyclopropyl to Thermoresponsive properties [PDF]

, 2011
The synthesis and microwave-assisted living cationic ring-opening polymerization of 2-cyclopropyl-2-oxazoline is reported revealing the fastest polymerization for an aliphatic substituted 2-oxazoline to date, which is ascribed to the electron withdrawing
Baumgartel, Anja, Bloksma, Meta M, Hoogenboom, Richard, Kuse, Anette, Perevyazko, Igor Y, Schubert, Ulrich S, Vollrath, Antje, Weber, Christine   +7 more
core   +2 more sources

Reconfigurable Magnetic Soft Microrobot for Acoustically Triggered Targeted Bacterial Sterilization

Advanced Functional Materials, EarlyView.
Reconfigurable magnetic soft microrobots integrate in situ‐grown piezoelectric zinc oxide nanorods that produce reactive oxygen species upon acoustic excitation. Combining magnetically guided transport with thermally induced planar reconfiguration, the microrobots achieve targeted delivery and enhanced bacterial sterilization through efficient on ...
Quan Gao, Fan Li, Jiajie Gao, Elric Zhang, Yingdong Su, Ni Qin, Hao Ye, Josep Puigmartí, Giuseppe Cantarella, Simone Schuerle, Jiang Wu, Bradley J. Nelson, Salvador Pané   +12 more
wiley   +1 more source

The Properties of Thermosensitive Zwitterionic Sulfobetaine NIPAM-co-DMAAPS Polymer and the Hydrogels: The Effects of Monomer Concentration on the Transition Temperature and Its Correlation with the Adsorption Behavior

Indonesian Journal of Chemistry, 2020
The properties of N-isopropylacrylamide copolymerized with N,N-dimethyl(acrylamidopropyl)ammonium propane sulfonate [poly(NIPAM-co-DMAAPS)] prepared with various monomer ratios such as transition temperature, molecular structure, viscosity were ...
Eva Oktavia Ningrum, Agus Purwanto, Galuh Chynintya Rosita, Asep Bagus   +3 more
doaj   +1 more source

Influence of monomer and crosslinker molar ratio on the swelling behaviour of thermosensitive hydrogels [PDF]

Chemical Industry and Chemical Engineering Quarterly, 2012
The synthesis of the poly(N-isopropylacrylamide-co-2-hydroxypropylmethacrylate) hydrogel along with the analysis of the residual monomers content and influence of monomer and crosslinker molar ratios on the swelling behaviour was investigated ...
Ilić-Stojanović Snežana S., Nikolić Ljubiša, Nikolić Vesna, Stanković Mihajlo, Stamenković Jakov, Mladenović-Ranisavljević Ivana, Petrović Slobodan   +6 more
doaj   +1 more source

Shape‐Morphing Nanoengineered Hydrogel Ribbons as Hemostats

Advanced Functional Materials, EarlyView.
This study introduces a self‐assembling, shape‐morphing nanoengineered hydrogel ribbon system that rapidly forms porous aggregates in situ for efficient hemostasis in trauma and surgical applications. Abstract Rapid and effective hemorrhage control remains a major challenge in trauma and surgical care, particularly for complex or noncompressible wounds.
Ryan Davis Jr, Saptarshi Biswas, Jacob Aragon, Asaf Dana, Jasmine Sureka, Vaaridhi Ramanuja, Jeevika Thazhaiselvam, Sarah E. Miller, Taylor H. Ware, Akhilesh K. Gaharwar   +9 more
wiley   +1 more source

Temperature & pH triggered release characteristics of water/fluorescein from 1-ethyl-3-methylimidazolium ethylsulfate based ionogels. [PDF]

, 2013
A crosslinked Poly(N-isopropylacrylamide) ionogel encapsulating an ionic liquid exhibits improved transmittance properties, enhanced water uptake/release, greater thermal actuation behaviour and distinct solvatomorphology over its hydrogel equivalent. It
Diamond, Dermot, Florea, Larisa, Fraser, Kevin J., Gallagher, Simon, Kavanagh, Andrew, MacFarlane, Douglas R.   +5 more
core   +1 more source

Controlled Movement of Soft Actuators using Multi‐Responsive Microgel Arrays and Microcirculatory Systems

Advanced Functional Materials, EarlyView.
Microscale hydrogels (microgels) feature improved mass transport characteristics supportive of fast actuation and chemical tunability amenable to programmed stimuli response. A unique soft actuator architecture is realized by encapsulating microgels in soft microcirculatory systems which enable the convenient delivery of liquid stimuli for powering and
Nengjian Huang, Brennan P. Watts, Stephen A. Morin   +2 more
wiley   +1 more source

Bioinspired graphene membrane with temperature tunable channels for water gating and molecular separation

Nature Communications, 2017
The smart regulation of substance permeability is highly desirable for membrane separation technologies. Here, the authors design a poly(N-isopropylacrylamide)-grafted graphene oxide membrane with temperature tunable lamellar spaces, allowing for water ...
Jingchong Liu, Nü Wang, Li-Juan Yu, Amir Karton, Wen Li, Weixia Zhang, Fengyun Guo, Lanlan Hou, Qunfeng Cheng, Lei Jiang, David A. Weitz, Yong Zhao   +11 more
doaj   +1 more source

Equilibrium Swelling of Biocompatible Thermo-Responsive Copolymer Gels

Gels, 2021
Biomedical applications of thermo-responsive (TR) hydrogels require these materials to be biocompatible, non-cytotoxic, and non-immunogenic. Due to serious concerns regarding potential toxicity of poly(N-isopropylacrylamide) (PNIPAm), design of ...
Aleksey D. Drozdov
doaj   +1 more source

Effect of surfactant concentration on the responsiveness of a thermoresponsive copolymer/surfactant mixture with potential application on Smart foams formulations

, 2017
We studied a system formed by a mixture of a thermoresponsive negatively charged graft copolymer (Alg-g-PNIPAAm) with a brush-type structure, and an oppositely charged surfactant (DTAB), in bulk and at the air-solution interface. We performed experiments
Cuenca, Ezequiel, Domínguez, Claudia, Lencina, M. M. Soledad, Leyes, Marcos D. Fernández, Miconi, Eugenio Fernández, Ritacco, Hernán A.   +5 more
core   +1 more source