Results 11 to 20 of about 5,309 (199)

Preparation and Anti-Mold Properties of Nano-ZnO/Poly(N-isopropylacrylamide) Composite Hydrogels

open access: yesMolecules, 2020
The aim of this study was to overcome drawbacks of the inhomogeneous dispersion and facile agglomeration of nano-ZnO/poly(N-isopropylacrylamide) composite hydrogels (nano-ZnO/PNIPAm composite hydrogels) during synthesis and improve the anti-mold property
Jingjing Zhang   +7 more
doaj   +1 more source

Colloidal Probes of PNIPAM-Grafted SiO2 in Studying the Microrheology of Thermally Sensitive Microgel Suspensions

open access: yesAdvances in Polymer Technology, 2020
The complex rheology and the phase behavior of thermally sensitive poly(N-isopropylacrylamide) (PNIPAM) microgels have been investigated in both the swollen and collapsed states by using microrheology.
Jing Shang   +4 more
doaj   +1 more source

Thin films of PS/PS‐b‐pnipam and ps/pnipam polymer blends with tunable wettability [PDF]

open access: yesJournal of Polymer Science Part B: Polymer Physics, 2019
ABSTRACTWe developed thin films of blends of polystyrene (PS) with the thermoresponsive polymer poly(N‐isopropylacrylamide) (PNIPAM) (PS/PNIPAM) and its diblock copolymer polystyrene‐b‐poly(N‐isopropylacrylamide) (PS/PS‐b‐PNIPAM) in different blend ratios, and we study their surface morphology and thermoresponsive wetting behavior.
Maria Kanidi   +4 more
openaire   +2 more sources

A new approach to thermal responsivity and hydrodynamics of poly(N-isopropylacrylamide) in aqueous solution: all-atom and mesoscopic simulations

open access: yesMaterials Research Express, 2021
In this study, the impact of chemical and physical characteristics of poly(N-isopropylacrylamide) (PNIPAm) in water on its thermoresponsive behavior and aggregation was investigated via all-atom and mesoscopic simulations.
Sajad Rasouli   +2 more
doaj   +1 more source

Microfluidic devices functionalized with PNIPAM [PDF]

open access: yes, 2021
In this thesis, we developed several PDMS-based microfluidic devices for emulsion generation and capillary-driven flow control. By grafting the PDMS surface with PNIPAm using UV-induced surface polymerization, we obtain a PNIPAm-g-PDMS surface with it's surface wettability that is sensitive to temperature.
openaire   +2 more sources

Thermo-responsive poly(N-isopropylacrylamide) (PNIPAM) hydrogel particles improve workability loss and autogenous shrinkage in cement paste

open access: yesCement, 2022
In this work, we show that non-superabsorbent, thermo-responsive poly(N-isopropyl acrylamide) (PNIPAM) hydrogel particles (< 250 μm) can reduce autogenous shrinkage in cement paste and improve early-age stiffening that can be caused by traditional ...
Anastasia N. Aday   +3 more
doaj   +1 more source

Surface Morphology at the Microscopic Scale, Swelling/Deswelling, and the Magnetic Properties of PNIPAM/CMC and PNIPAM/CMC/Fe3O4 Hydrogels

open access: yesGels, 2016
Poly(N-isopropylacrylamide) (PNIPAM) hydrogels containing carboxymethylcellulose (CMC) and CMC/Fe3O4 nanoparticles were prepared. Free-radical polymerization with BIS as cross-linker was used to synthesize the hydrogels. The morphology at the microscopic
Marianna Uva, Andrea Atrei
doaj   +1 more source

A Thermal and Enzymatic Dual‐Stimuli Responsive DNA‐Based Nanomachine for Controlled mRNA Delivery

open access: yesAdvanced Science, 2023
The extreme instability of mRNA makes the practical application of mRNA‐based vaccines heavily rely on efficient delivery system and cold chain transportation.
Feng Li   +6 more
doaj   +1 more source

Uptake of Chlorin e6 Photosensitizer by Polystyrene-Diphenyloxazole-Poly(N-Isopropylacrylamide) Hybrid Nanosystem Studied by Electronic Excitation Energy Transfer

open access: yesNanoscale Research Letters, 2018
Polystyrene (PS)-diphenyloxazole (PPO) nanoparticles with attached cross-linked poly-N-isopropylacrylamide (PNIPAM) chains were obtained resulting in PS-PPO-PNIPAM hybrid nanosystems (NS).
M. Yu. Losytskyy   +4 more
doaj   +1 more source

Thermoresponsive Alginate-Graft-pNIPAM/Methyl Cellulose 3D-Printed Scaffolds Promote Osteogenesis In Vitro

open access: yesGels, 2023
In this work, a sodium alginate-based copolymer grafted by thermoresponsive poly(N-isopropylacrylamide) (PNIPAM) chains was used as gelator (Alg-g-PNIPAM) in combination with methylcellulose (MC).
Aikaterini Gialouri   +5 more
doaj   +1 more source

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