scholarly journals NEGATIVE PHOTORESISTS ON THE BASIS OF COPOLYMERS OF 2-CHLOROMETHYL-1-(PVINYL PHENYL)CYCLOPROPANE WITH GLYCIDYL METHACRYLATE

ASJ. ◽  
2021 ◽  
Vol 2 (45) ◽  
pp. 27-32
Author(s):  
G. Guliyev ◽  
A. Sadygova ◽  
T. Gulverdashvili ◽  
M. Aliyeva ◽  
D. Tagiyev
Keyword(s):  
Glycidyl Methacrylate ◽  
Relative Activity ◽  
Radical Copolymerization ◽  
Photosensitive Material ◽  
Composition And Structure

The radical copolymerization of 2-chloromethyl-1-(p-vinyl phenyl)cyclopropane with glycidyl methacrylate is carried out. The composition and structure of the obtained copolymer are established. The constant values of relative activity of monomers are determined and Q-е parameters on Alfrey-Price are calculated. The photosensitivity of new cyclopropane and epoxy-containing photosensitive copolymers is studied. The photochemical structuring is investigated and it is established that the synthesized polymer has a photosensitivity (56 cm2/J) and can be used for creation of photosensitive material.

Atom transfer radical copolymerization of glycidyl methacrylate and methyl methacrylate

2011 ◽  
Vol 124 (3) ◽  
pp. 2209-2215 ◽  
Author(s):  
Dorota Neugebauer ◽  
Katarzyna Bury ◽  
Michał Wlazło
Keyword(s):  
Methyl Methacrylate ◽  
Glycidyl Methacrylate ◽  
Radical Copolymerization ◽  
Atom Transfer

scholarly journals SYNTHESIS OF 1-(P-VINYLPHENYL)-2- DIETHYLAMINOMETHYLCYCLOPROPANE AND ITS RADICAL COPOLYMERIZATION WITH METHYL METHACRYLATE

2021 ◽  
Vol 19 (3) ◽  
pp. 173-178
Author(s):  
A.I. Sadygova ◽  
◽  
Keyword(s):  
Methyl Methacrylate ◽  
Relative Activity ◽  
Radical Copolymerization ◽  
Parameter Values

The radical copolymerization of 1-(p-vinylphenyl)-2-diethylaminomethylcyclopropane with methyl methacrylate was carried out and some regularities of the process examined. Values of constants of relative activity of monomers were determined and Q-e parameters calculated on Alfrey and Price. Copolymerization constants of this compound (r1) with methyl methacrylate (r2), calculated on the FinemanRoss method, are as follows: r1 = 0.95, r2 = 0.33, Q and e parameter values: Q1 = 1.80, e1 = -0.72, respectively. The photochemical structuring of the copolymer was studied. It was established that the obtained copolymer has a sufficiently high biomedical activity which opens up the possibility of its using as bactericides and fungicides

Poly(Glycidyl Methacrylate-co-Octadecyl Methacrylate) particles by dispersion radical copolymerization

2019 ◽  
Vol 41 (12) ◽  
pp. 1768-1776
Author(s):  
Prodip K. Goswami ◽  
Monsum Kashyap ◽  
Pranjal P. Das ◽  
Prakash J. Saikia ◽  
Jyotirekha G. Handique
Keyword(s):  
Glycidyl Methacrylate ◽  
Radical Copolymerization

Water-developable photoresists employing onium salt photoinitiators

1995 ◽  
Vol 7 (4) ◽  
pp. 503-515 ◽  
Author(s):  
Keith Davidson ◽  
Philip C Hadley
Keyword(s):  
Cationic Polymerization ◽  
Glycidyl Methacrylate ◽  
Radical Copolymerization ◽  
Water Soluble ◽  
Cross Linking ◽  
Aqueous Systems ◽  
Onium Salt ◽  
Water Dispersible ◽  
Onium Salts ◽  
Photoacid Generator

Aromatic onium salts are known compounds with well understood photoactivity. Their use as acid-generating species has, in the last few years, improved the performance of photoresists, particularly for microelectronics applications. There has, however, been little research dedicated to the use of these photoinitators in aqueousrdevelopable resists. This work investigates the feasibility of employing onium salts in the formulation of resists suitable for aqueous development. The ability of the onium salts to photoinitiate the cationic polymerization or cross-linking of epoxide residues was exploited using water-soluble or water-dispersible copolymers containing glycidyl methacrylate (GMA). The comonomers included N-vinyl pyrrolidinone (NVP), NN-dimethylacrylamide (DMAc) and 2-hydroxyethyI methacrylate (HEMA). Various copolymers were prepared by radical copolymerization to low conversion, typically in chloroform. Several onium salts were prepared by literature methods and their efficiency examined using a model copolymer. The photoacid generator (PAG) that performed best was then used in the examination of the aqueous systems.

scholarly journals Thermoresponsive Poly(N,N-diethylacrylamide-co-glycidyl methacrylate) Copolymers and Its Catalytically Active α-Chymotrypsin Bioconjugate with Enhanced Enzyme Stability

Polymers ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 987
Author(s):  
György Kasza ◽  
Tímea Stumphauser ◽  
Márk Bisztrán ◽  
Györgyi Szarka ◽  
Imre Hegedüs ◽  
...  
Keyword(s):  
Glycidyl Methacrylate ◽  
Enzyme Stability ◽  
Radical Copolymerization ◽  
Solution Temperature ◽  
Free Radical Copolymerization ◽  
Methacrylate Copolymers ◽  
Catalytically Active ◽  
One Step ◽  
Copolymer Poly ◽  
Average Size

Responsive (smart, intelligent, adaptive) polymers have been widely explored for a variety of advanced applications in recent years. The thermoresponsive poly(N,N-diethylacrylamide) (PDEAAm), which has a better biocompatibility than the widely investigated poly(N,N-isopropylacrylamide), has gained increased interest in recent years. In this paper, the successful synthesis, characterization, and bioconjugation of a novel thermoresponsive copolymer, poly(N,N-diethylacrylamide-co-glycidyl methacrylate) (P(DEAAm-co-GMA)), obtained by free radical copolymerization with various comonomer contents and monomer/initiator ratios are reported. It was found that all the investigated copolymers possess LCST-type thermoresponsive behavior with small extent of hysteresis, and the critical solution temperatures (CST), i.e., the cloud and clearing points, decrease linearly with increasing GMA content of these copolymers. The P(DEAAm-co-GMA) copolymer with pendant epoxy groups was found to conjugate efficiently with α-chymotrypsin in a direct, one-step reaction, leading to enzyme–polymer nanoparticle (EPNP) with average size of 56.9 nm. This EPNP also shows reversible thermoresponsive behavior with somewhat higher critical solution temperature than that of the unreacted P(DEAAm-co-GMA). Although the catalytic activity of the enzyme–polymer nanoconjugate is lower than that of the native enzyme, the results of the enzyme activity investigations prove that the pH and thermal stability of the enzyme is significantly enhanced by conjugation the with P(DEAAm-co-GMA) copolymer.

CALCULATION OF THE CONSTANTS OF COPOLYMERIZATION OF METHACRYLAMIDE WITHN-VINYLCAPROLACTAM

2021 ◽  
Vol 4 (1) ◽  
pp. 13-17
Author(s):  
Nurmukhammad Kamiljanov ◽  
◽  
Nurmukhammad Alimkulov ◽  
Sherzodbek Nabiev ◽  
Madaminjon Abdujabborov
Keyword(s):  
Relative Activity ◽  
Radical Copolymerization ◽  
Compositional Heterogeneity ◽  
Average Composition ◽  
Composition Modification ◽  
Compositional Distribution ◽  
First Time

In this work, a copolymer of methacrylamide with N-vinylcaprolactam was synthesized for the first time by the method of radical copolymerization, based on the obtained values of the copolymerization constants, the dependence of the instantaneous and average composition of the copolymer was calculated. The relative activity constants r1 and r2 of methacrylamide and N-vinylcaprolactam monomers in the reaction of radical copolymerization have been calculated. The probability of the formation of different sequences of units during the formation of the copolymer was investigated. The variance of the compositional distribution was found to have a minimum at the azeatropic point.Key words:copolymerization, methacrylamide, N-vinylcaprolactam, monomer, copolymer, instant composition, average composition, modification, compositional heterogeneity, dispersion

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