نتایج جستجو برای: thermoresponsive
تعداد نتایج: 1274 فیلتر نتایج به سال:
Commonly, modification of surfaces with thermoresponsive polymers is performed using poly(N-isopropylacrylamide) (poly(NIPAM)). However, integration poly(NIPAM) a second polymer to obtain more complex copolymer structures has proven challenging due inherently poorly controllable polymerization characteristics acrylamides. In this study, (N-(2-methacryloyloxyethyl)pyrrolidone (NMEP) synthesized ...
Stimuli-responsive polymers, with properties changing upon different environmental factor variations such as pH, light, mechanical stress or temperature, and polymeric nanoparticles have found many important applications in fields drug delivery, biosensing research. In this work, thermoresponsive that are able to react by Diels-Alder reaction (a diene-dienophile cycloaddition) were studied. The...
Abstract Thermoresponsive hydrogels based on ionic cellulose/chitosan are widely used various fields, such as smart windows and tissue engineering, while the effect of carbohydrate backbones thermal response mechanical properties has received less attention so far. Herein, poly(2(dimethylamino)ethyl methacrylate) (PDMAEMA)-grafted cellulose sulfate (P-CS) PDMAEMA-grafted chitosan (P-CHS) resear...
Graphene and other two-dimensional materials have unique physical and chemical properties of broad relevance. It has been suggested that the transformation of these atomically planar materials to three-dimensional (3D) geometries by bending, wrinkling, or folding could significantly alter their properties and lead to novel structures and devices with compact form factors, but strategies to enab...
We report the behaviour of thermoresponsive block copolymers of n-butyl acrylate and N-alkyl acrylamides in [C2mim][NTf2]. Poly(N-isopropylacrylamide) exhibits an upper critical solution temperature in [C2mim][NTf2] whereas poly(n-butyl acrylate) has a lower critical solution temperature. Consequently, these polymers exhibit double thermo-responsiveness correlated with the macromolecular struct...
2-Amino-N-isopropylacetamide and α-amino-ε-caprolactam were reacted with glycerol diglycidyl ether to give novel oligomeric thermoresponsive epoxide-amine adducts. These oligomers exhibit a lower critical solution temperature (LCST) behavior in water. The solubility properties were influenced with randomly methylated β-cyclodextrin (RAMEB-CD) and the curing properties of the amine-epoxide mixtu...
A chemically defined thermoresponsive hydrogel, poly(AEtMA-Cl-co-DEAEA) cross-linked with N,N'-methylenebisacrylamide, which allows enzyme-free passaging, was used as a substrate to culture murine embryonic stem cells (mESCs) under defined and undefined conditions. Analysis of 14 stem cell markers showed that the mESCs remained in a "naïve" state of pluripotency with differentiation potential t...
Endowing unimolecular soft nanoobjects with biomimetic functions is attracting significant interest in the emerging field of single-chain technology. Inspired by the compartmentalized structure and polymerase activity of metalloenzymes, copper-containing compact nanoglobules have been designed, synthesized, and characterized endowed with metalloenzyme mimicking characteristics toward controlled...
A dual thermoresponsive and magnetic colloidal gel matrix is described for enhanced stem-cell culture. The combined properties of the material allow enzyme-free passaging and expansion of mesenchymal stem cells, as well as isolation of cells postculture by the simple process of lowering the temperature and applying an external magnetic field. The colloidal gel can be reconfigured with thermal a...
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