Results 41 to 50 of about 15,082 (236)

The Study of Release of Chlorhexidine from Preparations with Modified Thermosensitive Poly-N-isopropylacrylamide Microspheres

open access: yesThe Scientific World Journal, 2012
The aim of this study was to investigate and compare the release rates of chlorhexidine (CX) base entrapped in the polymeric beads of modified poly-N-isopropylacrylamides (pNIPAMs) at temperatures below and over the volume phase transition temperature ...
Witold Musial   +3 more
doaj   +1 more source

Molecular mechanisms driving the microgels behaviour: a Raman spectroscopy and Dynamic Light Scattering study

open access: yes, 2019
Responsive microgels based on poly(N-isopropylacrylamide) (PNIPAM) exhibit peculiar behaviours due to the competition between the hydrophilic and hydrophobic interactions of the constituent networks. The interpenetration of poly-acrilic acid (PAAc), a pH-
Angelini, Roberta   +7 more
core   +1 more source

Rheological properties of aging thermosensitive suspensions [PDF]

open access: yes, 2007
Aging observed in soft glassy materials inherently affects the rheological properties of these systems and has been described by the soft glassy rheology (SGR) model [S. M. Fielding et al., J. Rheol. 44, 323 (2000)]. In this paper, we report the measured
Ende, Dirk van den   +3 more
core   +4 more sources

Synthesis and solution properties of a temperature-responsive PNIPAM–b-PDMS–b-PNIPAM triblock copolymer [PDF]

open access: yesColloid and Polymer Science, 2017
In this paper, we report the synthesis and self-assembly of a novel thermoresponsive PNIPAM60–b-PDMS70–b-PNIPAM60 triblock copolymer in aqueous solution. The copolymer used a commercially available precursor modified with an atom transfer radical polymerization (ATRP) initiator to produce an ABA triblock copolymer via ATRP.
Cook, Michael T.   +2 more
openaire   +2 more sources

Tacticity-Dependent Interchain Interactions of Poly(N-Isopropylacrylamide) in Water: Toward the Molecular Dynamics Simulation of a Thermoresponsive Microgel

open access: yesGels, 2017
The discovery that the lower critical solution temperature (LCST) of poly(N-Isopropylacrylamide) (PNIPAM) in water is affected by the tacticity opens the perspective to tune the volume phase transition temperature of PNIPAM microgels by changing the ...
Gaio Paradossi, Ester Chiessi
doaj   +1 more source

Effects of polydispersity on the glass transition dynamics of aqueous suspensions of soft spherical colloidal particles

open access: yes, 2017
Thermoresponsive poly(N-isopropylacrylamide) (PNIPAM) particles of a nearly constant swelling ratio and with polydispersity indices (PDIs) varying over a wide range (7.4% - 48.9%) are synthesized to study the effects of polydispersity on the dynamics of ...
Bandyopadhyay, Ranjini   +3 more
core   +1 more source

p(NIPAM) Kriyojelinin Hazırlanışı, Karakterizasyonu ve Termal Özelliklerinin p(NIPAM) Hidrojeli ile Karşılaştırmalı Olarak İncelenmesi

open access: yesDüzce Üniversitesi Bilim ve Teknoloji Dergisi, 2020
Bu çalışmada ilk olarak, süper-gözenekli poli(N-izopropilakrilamit) (p(NIPAM)) kriyojeli, -16°C' de kriyojelasyon yöntemi ile sentezlenmiştir. Polimerizasyon işleminde, NIPAM monomer olarak kullanıldı ve çapraz bağlayıcı olarak N,N'-metilen-bis-akrilamid
Koray Şarkaya
doaj   +1 more source

Quantifying the Reversible Association of Thermosensitive Nanoparticles [PDF]

open access: yes, 2011
Under many conditions, biomolecules and nanoparticles associate by means of attractive bonds, due to hydrophobic attraction. Extracting the microscopic association or dissociation rates from experimental data is complicated by the dissociation events and
A. M. Morris   +8 more
core   +3 more sources

Investigation on the Synergistic Effect of Tetra Butyl Phosphonium Bromide with Poly(N-isopropylacrylamide) Based Kinetic Hydrate Inhibitor

open access: yesChemical Engineering Transactions, 2020
The problem of clathrate hydrate plugging in flow pipes has been the most important issue in the off-shore exploitation since hydrates were found in transport facilities.
Seong Deok Seo   +4 more
doaj   +1 more source

Study on Preparation and Properties of PNIPAm/PPy Hydrogel Hygroscopic Material for Solid Dehumidification System

open access: yesEnergies, 2023
Air-conditioning systems account for 40–60% of the energy consumption of buildings, and most of this figure corresponds to the cooling and dehumidification process of air-conditioning units.
Jinlin Liu   +6 more
doaj   +1 more source

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