Results 21 to 30 of about 153,547 (331)

Catalytic polymeric nanoreactors : more than a solid supported catalyst [PDF]

open access: yes, 2012
Polymeric nanostructures can be synthesized where the catalytic motif is covalently attached within the core domain and protected from the environment by a polymeric shell.
Bosman, Liu, Wang, Yan
core   +2 more sources

Renewable Polymers Derived from Limonene

open access: yesChemEngineering, 2023
Renewable natural and synthetic basic substances can be used to produce biodegradable polymers. Several methods of the polymerization of terpene limonene have been evaluated.
Roman Aleksandrovich Lyubushkin   +5 more
doaj   +1 more source

Radical-Mediated Enzymatic Polymerizations [PDF]

open access: yesInternational Journal of Molecular Sciences, 2016
Polymerization reactions are commonly effected by exposing monomer formulations to some initiation stimulus such as elevated temperature, light, or a chemical reactant. Increasingly, these polymerization reactions are mediated by enzymes―catalytic proteins―owing to their reaction efficiency under mild conditions as well as their environmental ...
Zavada, Scott R.   +2 more
openaire   +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

Holographic characterization of chain photopolymerization [PDF]

open access: yes, 1999
A holographic characterization technique is developed in accordance with a general photopolymerization model. The technique allows detailed quantification of the chemical parameters, including their variation from the Trommsdorff effect.
Engin, D., Kewitsch, A. S., Yariv, A.
core   +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

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

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

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

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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