Results 11 to 20 of about 11,063 (261)

Semiconductor Nanocrystals and Graphene Oxide as Visible-Light-Sensitive Photoinitiators of Acrylamide Polymerization in Water

open access: yesХімія, фізика та технологія поверхні, 2015
Photopolymerization of acrylamide in aqueous solutions induced by visible light (?>400 nm) absorbed by colloidal particles of CdxZn1–xS, Fe2O3 and graphene oxide is reported.
O. L. Stroyuk   +2 more
doaj   +1 more source

Generation of Photopolymerized Microparticles Based on PEGDA Using Microfluidic Devices. Part 1. Initial Gelation Time and Mechanical Properties of the Material

open access: yesMicromachines, 2021
Photopolymerized microparticles are made of biocompatible hydrogels like Polyethylene Glycol Diacrylate (PEGDA) by using microfluidic devices are a good option for encapsulation, transport and retention of biological or toxic agents. Due to the different
José M. Acosta-Cuevas   +6 more
doaj   +1 more source

Monowave and polywave light-curing of bulk-fill resin composites: degree of conversion and marginal adaptation following thermomechanical aging

open access: yesBiomaterial Investigations in Dentistry, 2021
Aim: This study aimed to evaluate the effect of polymerization with either a monowave (MW) or a polywave (PW) light-curing unit (LCU) on the degree of conversion (DC) and marginal adaptation following thermomechanical aging of an ormocer bulk-fill resin ...
Sheila Celia Mondragón Contreras   +4 more
doaj   +1 more source

Photopolymerization of electroactive film applied to full polymer electrochromic device

open access: yeseXPRESS Polymer Letters, 2017
Electroactive films of thiophene-acrylate polymers were simultaneously photopolymerized by means of ultraviolet (UV) irradiation using diphenyliodonium hexafluorophosphate and acrylate special photoinitiators (PIs) as a mixed photoinitiator.
P. Y. Chang, C. H. Yang
doaj   +1 more source

Sıcaklığa Duyarlı PNIPAM Hidrojellerde Çapraz Bağlayıcı ve Başlatıcı Sisteminin Karşılaştırılması

open access: yesDüzce Üniversitesi Bilim ve Teknoloji Dergisi, 2019
Thermoresponsivehydrogels are three-dimensional polymer networks which undergo conformationalchanges in aqueous media depending on the external temperature.
Pinar Cakir Hatir, Ozlem Yalcin Capan
doaj   +1 more source

Design of Iodonium Salts for UV or Near-UV LEDs for Photoacid Generator and Polymerization Purposes

open access: yesMolecules, 2019
Iodonium salts are well established photoacid generators, cationic photoinitiators, as well as additives commonly used in photoredox catalytic cycles. However, as a strong limitation, iodonium salts are characterized by low light absorption properties ...
Ségolène Villotte   +3 more
doaj   +1 more source

Research progress in photopolymerization-based 3D printing technology of ceramics

open access: yesCailiao gongcheng, 2020
The historical evolution, the latest research progress and the related industrial status of equipment development of the three major photopolymerization-based ceramic 3D printing technologies were reviewed, i.e.
LIU Yu, CHEN Zhang-wei
doaj   +1 more source

Photopolymerization of acrylates by enzymatically synthesized PCL based macrophotoinitiator

open access: yeseXPRESS Polymer Letters, 2017
Polycaprolactone based macrophotoinitiator was synthesized via enzymatic ring-opening polymerization by using commercially available Irgacure-2959 as the nucleophilic initiator and Novozyme-435 as the immobilized lipase catalyst.
N. U. Kaya, A. Onen, Y. Guvenilir
doaj   +1 more source

Refractive index evolution of various commercial acrylic resins during photopolymerization

open access: yeseXPRESS Polymer Letters, 2018
A set of commercial (meth)acrylic resins was photopolymerized under identical irradiation conditions and evolution of their refractive index was monitored as a function of double bond conversion.
F. Aloui   +3 more
doaj   +1 more source

Polymer-graphene composites by photocuring of a system containing benzophenone macromer [PDF]

open access: yesJournal of the Serbian Chemical Society, 2016
Formulations incorporating benzophenone oligodimethacrylate (BP-DMA) and graphene structures (graphene oxide/GO, reduced graphene oxide/RGO) were exposed to UV/vis irradiation or femtosecond laser beam to achieve hybrid composites.
Jitaru Florentina   +4 more
doaj   +1 more source

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