Results 211 to 220 of about 14,052,002 (251)
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Poly(N-isopropylacrylamide) (PNIPAM) is never hydrophobic
Journal of Colloid and Interface Science, 2010PNIPAM chains have hydrophobic and hydrophilic domains below and above the LCST. Temperature dependent interactions between PNIPAM and solutes arise because of changes in the local environment around the hydrophobic isopropyl domains. Below the LCST the isopropyl groups are surrounded by water, whereas above the LCST the hydrophobic groups are in ...
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Poly(N-isopropylacrylamide)/Poly(dopamine) Capsules
Langmuir, 2014Polymer capsules are an interesting concept considered in nanobiotechnology. Approaches that facilitate their assembly remain sought after. Poly(dopamine) (PDA) has been considered and successfully applied in this context. We recently demonstrated that PDA could be copolymerized with different types of poly(N-isopropylacrylamide) (pNiPAAm) to assemble ...
Zhang, Yan +3 more
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Dextran permeation through poly(N-isopropylacrylamide) Hydrogels
Journal of Biomaterials Science, Polymer Edition, 1994The permeation of macromolecules such as fluoroescein-labeled dextran fractions through thermally reversible hydrogels has been investigated. A permeation model has been formulated, which takes into account hydrogel porosity and tortuosity as well as the combined effect of a geometric restraint for a relatively large solute molecule at a pore entrance ...
L C, Dong, A S, Hoffman, Q, Yan
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Effects of thermosensitive poly(N-isopropylacrylamide) on blood coagulation
Journal of Materials Chemistry B, 2016Thermosensitive poly( N -isopropylacrylamide) (PNIPAM), hydrophilic below its lower critical solution temperature (LCST) of 32 °C and hydrophobic above it, has been widely used as a drug and gene delivery system with intelligent temperature-responsivity.
Yi, Zhang +5 more
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Cytocompatible Performance of Thermosensitive Poly(N-Isopropylacrylamide) Nanoparticles
Journal of Biomaterials Science, Polymer Edition, 2012The development of biomedical materials with biocompatibility, especially cytocompatibility, is the frontal research field for material science, biology, medicine, pharmacology and related interdisciplines. We have successfully synthesized a new biomedical material, PNIPAM-g-P(NIPAMco-St) (PNNS) core-shell nanoparticles, and investigated its ...
Guo-Hui, Zhang +4 more
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Macromolecules, 1993
Pressure effects on the phase separation of aqueous solutions of poly(N-isopropylacrylamide) (pNIPA) and poly(N-isopropylacrylamide-co-acrylic acid) (pNIPA/AAc) were examined at pressures up to 250 MPa. The cloud point temperature first increased and then decreased as the pressure was raised.
Katsuto Otake +4 more
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Pressure effects on the phase separation of aqueous solutions of poly(N-isopropylacrylamide) (pNIPA) and poly(N-isopropylacrylamide-co-acrylic acid) (pNIPA/AAc) were examined at pressures up to 250 MPa. The cloud point temperature first increased and then decreased as the pressure was raised.
Katsuto Otake +4 more
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Properties of Poly(N-isopropylacrylamide)-Grafted Colloidal Silica
Journal of Colloid and Interface Science, 2000Poly(N-isopropylacrylamide-co-3-trimethoxysilylpropyl methacrylate) was prepared by radical polymerization and was grafted onto the surface of spherical colloidal silica. The copolymer, which had on average 1 silyl group per chain, condensed on the silica dispersed in THF at 60 degrees C. The resulting particles had a critical coagulation concentration
, Liu, , Pelton, , Hrymak
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Synthesis and characterization of fluorocarbon‐modified poly(N‐isopropylacrylamide)
Polymer International, 2000Poly(N-isopropylacrylamide) copolymers (PNIPAMs) containing pendent perfluoroalkyl (R F ) or dodecyl groups have been synthesized by copolymerization of NIPAM with small amounts of R R -acrylates or -methacrylates containing a sulfonamido moiety between the acrylate and R F groups or with dodecyl acrylate. Evidence for strong intermolecular hydrophobic
Yun-xiang Zhang +6 more
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Journal of Colloid and Interface Science, 2008
Poly(N-isopropylacrylamide)-b-poly(vinylpyridine) (PNIPAAm-b-PVP) and poly(N-isopropylacrylamide-co-hydroxylethyl methacrylate)-b-poly(vinylphenol) (P(NIPAAm-co-HEMA)-b-PVPhol) were synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization.
Yong-Yong, Li +3 more
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Poly(N-isopropylacrylamide)-b-poly(vinylpyridine) (PNIPAAm-b-PVP) and poly(N-isopropylacrylamide-co-hydroxylethyl methacrylate)-b-poly(vinylphenol) (P(NIPAAm-co-HEMA)-b-PVPhol) were synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization.
Yong-Yong, Li +3 more
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