Results 21 to 30 of about 242,225 (125)

Ethylene-hexene copolymer derived from [t-butylfluorenylsilyl-amido] dimethyl titanium complex

eXPRESS Polymer Letters, 2010
The copolymers of ethylene and 1-hexene were prepared with half-metallocene titanium complex ([t-BuNSiMe2Flu]TiMe2) and modified methylaluminoxane (MMAO).
doaj   +1 more source

Avaliação de aditivos poliméricos à base de éster fosfórico como modificadores da cristalização de parafina Evaluation of polymeric phosphoric ester-based additives as modifiers of paraffin crystallization

Polímeros, 2004
O desafio da produção de óleos parafínicos e óleos pesados tem sido destaque no cenário de inovações tecnológicas na indústria do petróleo. Este trabalho apresenta a obtenção de um novo aditivo químico de base polimérica, e sua avaliação como modificador
Denise O. Gentili, Carlos N. Khalil, Elizabete F. Lucas   +2 more
doaj   +1 more source

Polímeros com capacidade de reconhecimento molecular no controlo da libertação de fármacos. Parte 1: síntese e caracterização Molecularly imprinted polymers for controlling drug release. Part 1: synthesis and characterization

Química Nova, 2009
Molecularly imprinted polymers (MIPs) consist of synthetic macromolecular matrix, obtained through molecular imprinting-based methods that show ability to selectively recognize important biological molecules and its application in the drug delivery field is under development.
Margarita Domingues Sousa, Carlos Maurício Barbosa   +1 more
openaire   +1 more source

Synthesis and characterization of novel organotin carboxylate maleimide monomers and copolymers

eXPRESS Polymer Letters, 2009
Two novel tributyltin carboxylate maleimide monomers, tributyltin(maleimido)acetate and tributyltin(4-maleimido)benzoate, were synthesized by condensation reaction of maleimidoacetic acid or 4-maleimidobenzoic acid with bis(tributyltin) oxide ...
doaj   +1 more source

Acceleration effect of ionic liquids on polycyclotrimerization of dicyanate esters

eXPRESS Polymer Letters, 2016
The polycyclotrimerization reaction of dicyanate ester of bisphenol E (DCBE) in the presence of varying amounts (from 0.5 to 5 wt%) of 1-octyl-3-methylimidazolium tetrafluoroborate ([OMIm][BF4]) ionic liquid has been investigated using differential ...
A. Fainleib, O. Grigoryeva, O. Starostenko, A. Vashchuk, S. Rogalsky, D. Grande   +5 more
doaj   +1 more source

Environment-friendly synthesis of long chain semiaromatic polyamides

eXPRESS Polymer Letters, 2009
Long chain semiaromatic polyamides were synthesized by the reactions of p-phenylenediacetic acid with long chain aliphatic diamines, and characterized by Fourier transform infrared spectroscopy (FTIR) and by proton nuclear magnetic resonance (1H NMR ...
doaj   +1 more source

Self-assembly of nanostructures obtained in a microwave-assisted oxidative polymerization of aniline

eXPRESS Polymer Letters, 2014
For the first time, microwave assisted aniline oxidative polymerization is performed in the presence of acetic acid (CH3COOH) and ammonium hydroxide (NH4OH) at different microwave power levels.
M. R. Gizdavic-Nikolaidis, M. M. Jevremovic, M. C. Allison, D. R. Stanisavljev, G. A. Bowmaker, Z. D. Zujovic   +5 more
doaj   +1 more source

Synthesis of a series of soluble main-chain chiral nonracemic poly(alkyl-aryl ketone)

eXPRESS Polymer Letters, 2008
A series of main-chain chiral polyketones have been synthesized through condensation polymerization of a dihalide and a diketone with optically pure binaphthyl moiety as linkage in the polymer backbone.
doaj   +1 more source

Fast and efficient synthesis of high molecular weight poly(e-caprolactone) diols by Microwave-Assisted Polymer Synthesis (MAPS)

, 2011
Fil: Bonelli, Pablo Ricardo.
Gotelli, Gustavo A., Bonelli, Pablo Ricardo, Abraham, Gustavo Abel, Sosnik, Alejandro Dario   +3 more
openaire   +1 more source

Synthesis and characterization of poly(vinylchloride) type macrophotoinitiator comprising side-chain thioxanthone via click chemistry

eXPRESS Polymer Letters, 2011
Nowadays, the use of macromolecular photoinitiators provides for a good compatibility of the initiator in the formulation. Moreover, the migration of the initiator to the surface of the material is prevented, which results in low-odor and non-toxic ...
doaj   +1 more source