Results 21 to 30 of about 146,011 (308)

Vinylic Addition Polynorbornene in Catalysis [PDF]

open access: yes, 2019
Vinylic addition polynorbornenes (VA-PNB) result from the insertion polymerization of norbornene or specific norbornene derivatives catalyzed by transition metal com- plexes. The VA-PNB skeleton is completely aliphatic and keeps the bicyclic structure of
Albéniz Jiménez, Ana Carmen   +1 more
core   +2 more sources

Surface structure of thin asymmetric PS-b-PMMA diblock copolymers investigated by atomic force microscopy [PDF]

open access: yes, 2007
Asymmetric poly(styrene-b-methyl methacrylate) (PS-b-PMMA) diblock copolymers of molecular weight M-n = 29,700g mol(-1) (M-PS = 9300 g mol(-1) M-PMMA = 20,100 g mol(-1), PD = 1.15, chi(PS) = 0.323, chi(PMMA) = 0.677) and M-n = 63,900 g mol(-1) (M-PS = 50,
Hamley, Ian W.   +3 more
core   +1 more source

Intrazeolite assembly and pyrolysis of polyacrylonitrile [PDF]

open access: yes, 1992
Radical polymerization of acrylonitrile within the pores of zeolites Y and mordenite produces intrazeolite polyacrylonitrile that can be pyrolysed to form conducting carbon ...
Bein, Thomas   +2 more
core   +1 more source

Unexpected polymerization mechanism of dilignol in the lignin growing [PDF]

open access: yesRoyal Society Open Science, 2019
Lignin is an essential component of higher plants, which is built by the enzymatic dehydrogenative polymerization of monolignols. First, monolignol is enzymatically oxidized to produce the phenoxy radical, which can form resonance hybrids.
Yasuyuki Matsushita   +3 more
doaj   +1 more source

Copper(0)-mediated radical polymerisation in a self-generating biphasic system [PDF]

open access: yes, 2013
Herein, we demonstrate the synthesis of well-defined poly(n-alkyl acrylate)s via copper(0)-mediated radical polymerisation in a self-generating biphasic system. During the polymerisation of n-butyl acrylate in DMSO, the polymer phase separates to yield a
Amir Atme   +53 more
core   +1 more source

Effect of Oxygen and Initiator Solubility on Admicellar Polymerization of Styrene on Silica Surfaces

open access: yesInternational Journal of Polymer Science, 2017
Although admicellar polymerization has been termed the surface analog of emulsion polymerization, previous reports utilizing free radical-initiated admicellar polymerization relied on high levels of the free radical initiator when compared to emulsion ...
Pohlee Cheah   +3 more
doaj   +1 more source

Synthesis and characterization of copolymers from hindered amines and vinyl monomers

open access: yesPolímeros, 2014
New copolymers from hindered amines and vinyl monomers were synthesized by radical chain polymerization. To obtain polymeric HALS, acrylamide-(1ATP) and acrylate-(4ATP) monomers, derivatives from 2,2,6,6-tetramethylpiperidine and 2,2,6,6-tetramethyl-4 ...
Marcelo Aparecido Chinelatto   +2 more
doaj   +1 more source

Molecular imprinting in hydrogels using reversible addition-fragmentation chain transfer polymerization and continuous flow micro-reactor [PDF]

open access: yes, 2015
BACKGROUND Stimuli responsive imprinted hydrogel micro-particles were prepared using reversible addition-fragmentation chain transfer polymerization for targeting genotoxic impurity aminopyridine in aqueous environment using a continuous flow micro ...
Costa, Mário Rui   +5 more
core   +1 more source

Polymerization of organized monomers [PDF]

open access: yesHemijska Industrija, 2004
The current explanations of olefin and vinyl monomer polymerization propose that monomer molecules are successively added one by one to the growing polymer chain.
Stoiljković Dragoslav M.   +6 more
doaj   +1 more source

Sequential curing of amine-acrylate-methacrylate mixtures based on selective aza-Michael addition followed by radical photopolymerization [PDF]

open access: yes, 2016
Dual curing systems find various uses in industry with the process flexibility they provide which allows tailoring properties at different curing stages in accordance with application requirements. A safe and efficient dual curing scheme is proposed here
Fernández Francos, Xavier   +3 more
core   +1 more source

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