Results 311 to 320 of about 370,817 (387)

Preparation and degradation of copolymers of methyl methacrylate with alkali metal methacrylates—I. Copolymerization parameters for the systems methyl methacrylate-lithium methacrylate, methyl methacrylate-sodium methacrylate and methyl methacrylate-potassium methacrylate

European Polymer Journal, 1978
Abstract Copolymerizations of methyl methacrylate with the Li, Na and K salts of methacrylic acid have been studied in methanol solution at 60°. Reactivity ratios have been calculated by the methods due to Mayo and Lewis, Fineman and Ross and Peckham. The rate of copolymerization decreases as the size of the metal cation increases, in contrast to the
I.C. McNeill, A. Hamoudi
openaire   +2 more sources

Effects of the methacrylate monomers with different end groups on the morphologies, electro-optical and mechanical properties of polymer dispersed liquid crystals composite films

, 2020
In this work, the effects of the methacrylate monomers with various end groups (methyl, hydroxyl, epoxy, tetrahydrofuran, cyclohexane, benzene and siloxane) on the morphologies, electro-optical and mechanical properties of polymer dispersed liquid ...
Haonan Lin, Shuaifeng Zhang, Moshin Saeed, Le Zhou, Hongqi Gao, Junyi Huang, Lanying Zhang, Huai Yang, Jiu-mei Xiao, Yanzi Gao   +9 more
semanticscholar   +1 more source

Methods for the Synthesis of Methacrylic Acid and Methacrylates

Kataliz v promyshlennosti, 2020
The review provides an analysis of the literature on the existing processes for obtaining an important organic product – methacrylic acid and its ester – methyl methacrylate. The main methods of their industrial production are the synthesis from acetone and hydrocyanic acid (the acetone cyanohydrin method) and catalytic syntheses from petrochemical raw
Z. P. Pai, L. L. Gogin, E. G. Zhizhina
openaire   +2 more sources

The copolymerization of phenyl methacrylate with methacrylic acid

Polymer Science U.S.S.R., 1970
Copolymers of methacrylic acid with its esters are used as models in the hydrolysis s tudy of the respective polymethacrylates [1]. The knowledge of copolymerization constants rl and r2 permits the calculation of the acid and ester unit distribution in the copolymer chains. In this event the kinetic s tudy of the hydrolysis of copolymer samples enables
M.V. Shishkina, A.D. Litmanovich, E. Yun, L.V. Lobanova, T.A. Polikarpova, N.A. Plate   +5 more
openaire   +2 more sources

The copolymerisation of tetrahydrofurfuryl methacrylate and methyl methacrylate

Polymer Gels and Networks, 1996
Abstract The bulk copolymerisations of tetrahydrofurfuryl methacrylate, THFMA, and methyl methacrylate, MMA, were carried to low conversion at 60 °C, using benzoyl peroxide, BPO, as the initiator. The compositions of the copolymers were determined using 13C NMR spectroscopy.
Ghi, PY, Hill, DJT, ODonnell, JH, Pomery, PJ, Whittaker, AK   +4 more
openaire   +3 more sources

Gelatin methacrylate/carboxybetaine methacrylate hydrogels with tunable crosslinking for controlled drug release.

Journal of materials chemistry. B, 2016
In this work, methacrylated gelatin (GelMA) based hydrogels were fabricated with carboxybetaine methacrylate (CBMA) to manipulate the properties of the gelatin-based hydrogels, since CBMA is a much smaller compound compared to gelatin.
T. Lai, J. Yu, W. Tsai
semanticscholar   +1 more source

Enzymatic synthesis of sorbitan methacrylate: Comparison of methacrylic acid and vinyl methacrylate

Biochemical Engineering Journal, 2006
Abstract “Biomaterials” is a generic term which refers to a variety of medical material which is designed to be in direct contact with living tissue. Clearly, biomaterials must be carefully and microscopically fabricated for optimal acceptance within the living organism, in both functional and structural senses. In this study, the enzymatic synthesis
Gwi-Taek Jeong, Hae-Sung Kim, Hwa-Won Ryu, Ki-Young Byun, Woo-Tai Lee, Changshin Sunwoo, Don-Hee Park   +6 more
openaire   +2 more sources

Reductively Degradable Poly(2-hydroxyethyl methacrylate) Hydrogels with Oriented Porosity for Tissue Engineering Applications.

ACS Applied Materials and Interfaces, 2017
Degradable poly(2-hydroxyethyl methacrylate) hydrogels were prepared from a linear copolymer (Mw = 49 kDa) of 2-hydroxyethyl methacrylate (HEMA), 2-(acethylthio)ethyl methacrylate (ATEMA), and zwitterionic 2-methacryloyloxyethyl phosphorylcholine (MPC ...
H. Macková, Z. Plichta, H. Hlídková, O. Sedláček, R. Konefał, Zhansaya K. Sadakbayeva, M. Dušková-Smrčková, D. Horák, Š. Kubínová   +8 more
semanticscholar   +1 more source

BAB-random-C Monomer Sequence via Radical Terpolymerization of Limonene (A), Maleimide (B), and Methacrylate (C): Terpene Polymers with Randomly Distributed Periodic Sequences.

Angewandte Chemie, 2017
A naturally abundant terpene, limonene (A), was radically polymerized with a maleimide derivative (B) and methacrylate (C) in a fluorinated alcohol to give terpolymers with unprecedented BAB-random-C sequences in which the BAB monomer sequence was ...
Masataka Ojika, K. Satoh, M. Kamigaito
semanticscholar   +1 more source

Organotin polymers—I. Copolymerization parameters of tributyltin methacrylate with methyl methacrylate, propyl methacrylate and butyl methacrylate

European Polymer Journal, 1979
Abstract The monomer reactivity ratios for radical copolymerizations of tributyltin methacrylate (monomer-1) with methyl methacrylate, propyl methacrylate and butyl methacrylate have been found as r 1 = 0.79 and r 2 = 1.0, r 1 = 0.58 and r 2 = 0.9, and r 1 = 0.65 and r 2 = 0.68 respectively.
N.E. Ikaldious, N. N. Messiha, N.A. Ghanem, A. F. Shaaban   +3 more
openaire   +2 more sources