Results 91 to 100 of about 4,470 (211)

Effect of Gold Nanoparticle Size on Regulated Catalytic Activity of Temperature-Responsive Polymer−Gold Nanoparticle Hybrid Microgels

open access: yesGels
Gold nanoparticles (AuNPs) possess attractive electronic, optical, and catalytic properties, enabling many potential applications. Poly(N-isopropyl acrylamide) (PNIPAAm) is a temperature-responsive polymer that changes its hydrophilicity upon a slight ...
Palida Pongsanon   +3 more
doaj   +1 more source

Synthesis and Characterization of Transparent Conductive Film PEDOT:PSS/PNIPAAm with Thermal Responsible Property

open access: yes, 2013
本研究的目的在於合成與製備具溫度感應性質之Poly(3,4-ethlyenedioxythiophene): Poly(styrenesulfonic acid) / Poly-NIPAAm (PEDOT:PSS/PNIPAAm) 透明導電薄膜並研究其不同配方對溫度感應性質與光電性質的影響。本研究分成兩個部份,第一部分使用氧化還原起始劑 (Redox initiator),在室溫中將氮-異丙基丙烯醯胺(N-isopropylacrylamide, NIPAAm)單體聚合成聚(氮-異丙基丙烯醯胺 ...
Pai, Hsiu-Wei, 白修瑋
core  

Coil to globule transition of pNIPAAm dopped with chiral amino acidic comonomers

open access: yes, 2007
By combined light scattering and circular dichroism measurements (CD), we have investigated the coil-to-globule transition of the thermosensitive polymer poly(N-isopropylacrylamide) (pNIPAAm) copolymerized with a 1/10 fraction of valine- or leucine ...
F. Gangemi   +14 more
core   +2 more sources

PNIPAAm-grafted thermoresponsive microcarriers: Surface-initiated ATRP synthesis and characterization

open access: yesMaterials Science and Engineering: C, 2013
In this study, we developed novel thermoresponsive microcarriers as a powerful tool for cell culture and tissue engineering applications. For this purpose, two types of commercially available spherical microparticles (approximately 100 μm in diameter), dextran-based Sephadex® and vinyl acetate-based VA-OH (Biosynth®), were used and themoresponsive poly(
Cakmak, Soner   +2 more
openaire   +4 more sources

Enhanced and sustained topical ocular delivery of cyclosporine A in thermosensitive hyaluronic acid-based in situ forming microgels

open access: yesInternational Journal of Nanomedicine, 2013
Yijun Wu, Jing Yao, Jianping Zhou, Fatima Zohra Dahmani State Key Laboratory of Natural Medicines, China Pharmaceutical University, Tongjiaxiang, Nanjing, People’s Republic of China Abstract: For nearly a decade, thermoresponsive ophthalmic in situ
Wu Y, Yao J, Zhou J, Dahmani FZ
doaj  

Preparation of thermoswitchable micro capillary force valves inside polydimethylsiloxane microfluidic channels(聚二甲基硅氧烷微流控通道内温控表面张力微阀的研制)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2012
介绍一种在全聚二甲基硅氧烷(PDMS)微流控芯片通道中制备温控毛细管力微阀的简易方法.通过二苯甲酮诱导的光引发聚合接枝反应,在PDMS表面接枝聚丙烯酸(PAA)或温敏高聚物聚N-异丙基丙烯酰胺(PNIPAAm), 使高度疏水的PDMS表面改性为亲水(接枝PAA)或温控亲疏水性可调(接枝PNIPAAm).在此基础上,建立了在PDMS通道内的“二步区域接枝法”,即在PDMS大部分通道表面引入亲水性PAA,而在需要设置温控毛细管力微阀的部位接枝PNIPAAm ...
ZHANGYi-wen(张宜文)   +4 more
doaj   +1 more source

Characterization of a Novel Thermoresponsive Polysaccharide Grafted with PNIPAAM.

open access: yes, 2010
Abstract The uncharged temperature responsive polymer MHEC-g-PNIPAAM (modified hydroxyethylcellulose graft poly(N-isopropylacrylamide)), and its anionic analogue were characterized by the aid of dynamic light scattering (DLS), rheology, turbidity and rheo-small angle light scattering (rheo-SALS).
openaire   +2 more sources

Dual-responsive reduced graphene oxides prepared by radiation-initiated living radical grafting polymerization

open access: yesFushe yanjiu yu fushe gongyi xuebao
Temperature-responsive poly(N-isopropylacrylamide) (PNIPAAm) was grafted onto the surface of graphene oxide (GO) via reversible addition-fragmentation chain transfer polymerization initiated by γ-ray radiation.
WENG Hanqin   +6 more
doaj   +1 more source

The Structure of PU/PNIPAAm Semi-IPN Prepared by Wet Phase Inversion Process

open access: yes, 2010
N-isopropylacrylamide(NIPAAm) was dispersed in polyurethane(PU) solution and crosslinked with N,N’-methylene bisacrylamide(BIS) to form a semi-interpenetrating polymer networks. The synthesized solution was casted into water bathes with and without 0.25M
Yuan Xue, Hai Ning Lv
core   +1 more source

Homogeneous PNIPAAm structures shrink in response to heat.

open access: yes, 2017
(a) The homogeneous PNIPAAm structures have the same size at the beginning. The fabricated PNIPAAm structures with 3 mg cross linker as single (b), double (c) and triple (d) layers are shown.
Sang Joon Lee (567771)   +4 more
core   +1 more source

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