نتایج جستجو برای: copolymerization

تعداد نتایج: 2777  

Journal: :The journal of physical chemistry. B 2013
Ye Zhang Rong Zhou Junfeng Shi Ning Zhou Irving R Epstein Bing Xu

We study the use of post-self-assembly cross-linking to combine molecular nanofibers of hydrogelators with copolymers to generate oscillatory materials using the Belousov-Zhabotinsky reaction. The formation of nanofibers from designed hydrogelators provides multiple polymerizable sites for copolymerizing with N-isopropylacrylamide and for attaching a catalytic ruthenium bipyridine complex on th...

2015
Claudia Houben Nicolai Peremezhney Alexandr Zubov Juraj Kosek Alexei A. Lapkin

Self-optimization of chemical reactions enables faster optimization of reaction conditions or discovery of molecules with required target properties. The technology of self-optimization has been expanded to discovery of new process recipes for manufacture of complex functional products. A new machine-learning algorithm, specifically designed for multiobjective target optimization with an explic...

Journal: :Polymer Chemistry 2023

Alternating cationic copolymerization of 2-chloroethyl vinyl ether and cyclic trimers one monomer two aldehyde molecules were investigated to obtain polymers with ABCC-type sequences.

Journal: :Polymer Chemistry 2022

Organoboron catalysts including an ammonium salt separated by a few carbon–carbon bonds to boron center were designed and synthesized. Borinane-based organoboron exhibited highest activity for the copolymerization of CO 2 epoxides.

Journal: :Polymer Chemistry 2022

Difunctional iodo chain transfer agents (CTAs) were successfully employed in the iodine polymerization (ITP) of ethylene and its copolymerization with vinyl acetate to synthesize telechelic (co)polymers triblock copolymers.

2009
Juchen Guo Kyu Yong Choi F. Joseph Schork

The copolymerizations of a gaseous monomer (ethylene) and a liquid monomer (vinyl acetate) via emulsion and miniemulsion polymerizations are reported. Reactions in which the vinyl acetate was introduced in both batch and semibatch modes are carried out. (Ethylene introduction is always in a semibatch model since the polymerization is carried out under a constant pressure of ethylene in the reac...

Journal: :علوم و تکنولوژی پلیمر 0
رضا مهترانی حسن عربی محمدباقر تیموری سید صابر حسینی شیراز وحید اسلامی منش

copolymerization of ethylene and propylene was investigated using a 4th generation phthalate ziegler-natta catalyst in normal hexane in a buchi reactor. the effects of different mole fractions of [al]/[ti], [si]/[al] and various amounts of hydrogen on productivity and weight percent of ethylene on the product, were studied. in the copolymerization reactions, tri-isobutyl aluminum (tibal) was us...

Journal: :Polymer Chemistry 2021

Does statistical copolymerization of n-butyl methacrylate with benzyl lower the critical temperature required for vesicle-to-worm and worm-to-sphere transitions diblock copolymer nano-objects in mineral oil?

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2010
jamshid mohammadi-rovshandeh majid abdouss sayed mehdi hoseini mohammad imani kamel ekhlasi-kazaj

in this work, new biodegradable abcba type pentablock copolymers with different mole ratio of l-lactide and ppdo-b-peg-b-ppdo triblock copolymer were synthesized and characterized. in the first step, ppdo-b-peg-b-ppdo triblock copolymer was synthesized via a ring-opening polymerization of p-dioxanone (pdo) monomer with poly (ethylene glycol) (peg) using stannous octoate (sn(oct)2) as the cataly...

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