Results 221 to 230 of about 14,650 (239)

PNIPAm/PVA thermo-sensitive fibers

SPIE Proceedings, 2007
Using ammonium per sulfate (APS) as initiator, PNIPAm was in situ polymerized in PVA aqueous so1ution and the transparent PNIPAm/PVA blending solution was obtained. PNIPAm/PVA fiber, showing polymer networks cross linked by the entanglement and hydrogen-bonding, was successfully prepared from the blending PNIPAm/PVA solution via wet spinning process
X. Feng, L. Chen, L. L. Ju, Y. P. Zhao
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Porous thermo-responsive pNIPAM microgels

European Polymer Journal, 2015
Abstract Thermo-responsive poly(N-isopropylacrylamide) (pNIPAM) gels are very attractive for biological applications due to a phase transition at temperature (32 °C) closed to that of biologically relevant. This stimulates the usage of this polymer for cell culture, biosensing, drug delivery, etc. Herein we develop a new simple approach to synthesize
Feoktistova Natalia, Georgi Stoychev, Nikolay Puretskiy, Ionov Leonid, Volodkin Dmitry   +4 more
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PNIPAm-PEO-PPO-PEO-PNIPAm Pentablock Terpolymer: Synthesis and Chain Behavior in Aqueous Solution

Macromolecules, 2010
The double thermosensitive and narrow dispersed PNIPAm110-PEO100-PPO65-PEO100-PNIPAm110 pentablock terpolymer was synthesized by the typical atomic transfer radical polymerization (ATRP) method with N-isopropylacrylamide (NIPAm) as the monomer and modified poly(ethylene oxide)100−poly(propylene oxide)65−poly(ethylene oxide)100 (PEO100-PPO65-PEO100 ...
Aixiong Mei, Xiaolei Guo, Yanwei Ding, Xinghong Zhang, Junting Xu, Zhiqiang Fan, Binyang Du   +6 more
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Preparation and Properties of Cyclodextrin/PNIPAm Microgels

Macromolecular Bioscience, 2009
AbstractA two‐stage precipitation polymerization in aqueous solution was used to prepare β‐cyclodextrin/poly(N‐isopropylacrylamide) (β‐CD/PNIPAm) core–shell microgels. At the first stage, core microgels with CD moieties were synthesized by precipitation copolymerization of N‐isopropylacrylamide (NIPAm) with a monovinyl β‐CD monomer. At the second stage,
Yu-Yang, Liu, Yu, Yu, Wei, Tian, Le, Sun, Xiao-Dong, Fan   +4 more
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Solution behaviors and microstructures of PNIPAm-P123-PNIPAm pentablock terpolymers in dilute and concentrated aqueous solutions

Physical Chemistry Chemical Physics, 2013
The solution behaviors and microstructures of poly(N-isopropylacrylamide)x-poly(ethylene oxide)20-poly(propylene oxide)70-poly(ethylene oxide)20-poly(N-isopropylacrylamide)x (PNIPAmx-PEO20-PPO70-PEO20-PNIPAmx or PNIPAmx-P123-PNIPAmx) pentablock terpolymers with various PNIPAm block lengths in dilute and concentrated aqueous solutions were investigated ...
Yanping, Lu, Tongquan, Chen, Aixiong, Mei, Tianyou, Chen, Yanwei, Ding, Xinghong, Zhang, Junting, Xu, Zhiqiang, Fan, Binyang, Du   +8 more
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Osmotically Rupturing Phagosomes in Macrophages Using PNIPAM Microparticles

ACS Applied Materials & Interfaces, 2023
The rupture of macrophage phagosomes has been implicated in various human diseases and plays a critical role in immunity. However, the mechanisms underlying this process are complex and not yet fully understood. This study describes the development of a robust engineering method for rupturing phagosomes based on a well-defined mechanism.
Wenhao Cheng, Masahiro Fukuda, Sundol Kim, Yuan Liu, Xingchi Chen, Christina Holmes, Yan Li, Hoyong Chung, Yi Ren, Jingjiao Guan   +9 more
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Thermoresponsive CdS@PNIPAM core–shell nanocomposite

Journal of Materials Science, 2011
Design and synthesis of core–shell nanocomposites, with a shell of an organic material coating an inorganic nanocrystal core, have been thoroughly investigated due to their prospective applications in many fields, such as catalysis, photonics, electronics, optics, and biomedicine [1–6].
Y. X. Cao, M. Wang, J. T. Wang, C. H. Li
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2D assembly of gold–PNIPAM core–shell nanocrystals

Physical Chemistry Chemical Physics, 2011
2D arrays of Au-PNIPAM core-shell nanocrystals were fabricated using convective deposition and spin-coating. The particle density and ordering were studied by AFM. Annealing at 700 °C removes the polymer shell, while retaining a monolayer of well-separated gold nanoparticles.
Sarah, Jaber, Matthias, Karg, Anthony, Morfa, Paul, Mulvaney   +3 more
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Adsorption of Oligonucleotides on PMMA/PNIPAM Core−Shell Latexes:  Polarity of the PNIPAM Shell Probed by Fluorescence

Langmuir, 2004
The adsorption of a rhodamine X labeled oligonucleotide composed of 25-mers of thymine (dT(25)-ROX) onto the thermosensitive shell of PMMA/PNIPAM core-shell latex particles was studied at 22 and 40 degrees C, below and above the T(VPT) (volume phase transition temperature) of the PNIPAM shell, respectively.
T J V, Prazeres, A M, Santos, J M G, Martinho, A, Elaïssari, C, Pichot   +4 more
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Poly(N-isopropylacrylamide) (PNIPAM) is never hydrophobic

Journal of Colloid and Interface Science, 2010
PNIPAM 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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