scholarly journals Modification of Natural Leather Properties via Grafting Polymerization of Glycidyl Methacrylate Monomer

2021 ◽  
Keyword(s):  
Glycidyl Methacrylate ◽  
Grafting Polymerization ◽  
Methacrylate Monomer

Abstract The authors have requested that this preprint be withdrawn due to erroneous posting.

scholarly journals Modification of Natural Leather Properties via Grafting Polymerization of Glycidyl Methacrylate Monomer

2021 ◽  
Author(s):  
Nadia Hussein ◽  
Raedah A.S. Alatawi ◽  
Marzough A. Albalawi ◽  
Hanan M. A. Al-Sayed ◽  
Abeer Abdulaziz H. Bukhari ◽  
...  
Keyword(s):  
Nitrogen Content ◽  
Glycidyl Methacrylate ◽  
Reactive Dye ◽  
Molar Ratio ◽  
Acid Dye ◽  
Grafting Polymerization ◽  
A Value ◽  
Colour Strength ◽  
Methacrylate Monomer ◽  
Tga Analysis

Abstract Chrome tanned leather was grafted by poly (glycidyl methacrylate) (L-g-PGMA) via emulsion polymerization technique and the grafting yield 26%. Epoxy content of the grafted leather samples was 69.4 mmol/100gm. The obtained L-g-PGMA samples were impregnated in different dibutyl amine solutions using amine/ epoxy molar ratio ranging from 0.5 up to 2.5. The obtained samples were assessed through varying nitrogen analysis, infrared spectroscopy, thermogravemetric analysis (TGA) analysis and scanning electron microscope. It was found that the nitrogen content of the treated leather samples increases by increasing the dibutyl amine concentration up to amine/ epoxy molar ratio of 2 after which it decreases. The water absorption, tensile strength and elongation (%) as well as hardness of the modified leather samples were studied and compared with the unmodified one. The colour strength values of dyed leather samples with acid dye were found to increase by grafting or by increasing the amine/epoxy molar ratio up to a value of 1.0 after which it decreases. On the contrary, the colour strength value of dyed leather sample with reactive dye sharply decreases after grafting with poly (glycidyl methacrylate). Samples grafted with glycidyl methacrylate and treated with dibutylacrylate amine exhibit increased colour strength which is directly related to the nitrogen content of the sample.

Highly hydrophilic cation exchange nonwoven with further modifiable epoxy group prepared by radiation-induced graft polymerization

2021 ◽  
Author(s):  
Xiaohan Pan ◽  
Jianhua Zu
Keyword(s):  
Cation Exchange ◽  
Glycidyl Methacrylate ◽  
Graft Polymerization ◽  
Epoxy Group ◽  
Grafting Polymerization ◽  
Radiation Induced

Novel cation exchange nonwoven PP-g-SSS/GMA containing epoxy and sulfonic groups was successfully prepared by radiation-induced simultaneous grafting polymerization attaching glycidyl methacrylate (GMA) and styrene sulfonic sodium (SSS) monomers onto polypropylene...

scholarly journals Selenonium Polyelectrolyte Synthesis through Post-Polymerization Modifications of Poly (Glycidyl Methacrylate) Scaffolds

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2685
Author(s):  
Taejun Eom ◽  
Anzar Khan
Keyword(s):  
Ethylene Glycol ◽  
Ring Opening ◽  
Glycidyl Methacrylate ◽  
Ambient Conditions ◽  
Poly Ethylene Glycol ◽  
Ring Opening Reaction ◽  
Methacrylate Monomer ◽  
Poly Ethylene ◽  
Alkylation Reactions ◽  
Nucleophilic Ring Opening

Atom transfer radical polymerization of glycidyl methacrylate monomer with poly(ethylene glycol)-based macroinitiators leads to the formation of reactive block copolymers. The epoxide side-chains of these polymers can be subjected to a regiospecific base-catalyzed nucleophilic ring-opening reaction with benzeneselenol under ambient conditions. The ß-hydroxy selenide linkages thus formed can be alkylated to access polyselenonium salts. 77Se-NMR indicates the formation of diastereomers upon alkylation. In such a manner, sequential post-polymerization modifications of poly(glycidyl methacrylate) scaffolds via selenium-epoxy and selenoether alkylation reactions furnish practical access to poly(ethylene glycol)-based cationic organoselenium copolymers.

scholarly journals Radiation induced emulsion grafting of glycidyl methacrylate onto high density polyethylene: A kinetic study

2014 ◽  
Vol 6 (2) ◽  
Author(s):  
Mohamed Mahmoud Nasef ◽  
Indriani Andromeda Sugiarmawan
Keyword(s):  
Radiation Dose ◽  
High Density Polyethylene ◽  
Glycidyl Methacrylate ◽  
Surfactant Concentration ◽  
Initial Rate ◽  
Monomer Concentration ◽  
High Density ◽  
Tween 20 ◽  
Grafting Reaction ◽  
Methacrylate Monomer

Emulsion graft polymerisation of glycidyl methacrylate monomer onto high density polyethylene (HDPE) resin was studied. The radicals required to initiate the reaction were produced in HDPE resin by irradiation with the electron beam accelerator at ambient and vacuum conditions. The grafting reaction of GMA with irradiated HDPE was initiated by emulsion method using Tween 20 as a surfactant and water as a solvent under controlled conditions. The kinetic behavior of grafting reaction was investigated with respect to the degree of grafting under various parameters i.e. monomer concentration, radiation dose, grafting temperature and surfactant concentration. The degree of grafting was found to be a function of the investigated parameters. Particularly, surfactant concentration in the emulsion was found to be crucial for determining the micelle size and eventually the degree of grafting. The order of dependence of the initial rate of grafting on the monomer concentration and the irradiation dose was found to be 0.94 and 0.60, respectively. The initial rate of grafting was also found to increase with the increase in the grafting temperature varied in the range of 308-333 K. The optimum reaction parameters required to obtain desired and reproducible degrees of grafting in the resin could be identified. Moreover, the emulsion radiation grafting method was found to offer essential advantages over the conventional grafting with solvents including low radiation dose, less monomer concentration and cost effectiveness.

scholarly journals Effects of natural rubber latex fraction to glycidyl methacrylate on grafting polymerization and its application as Th4+ and UO2 2+ ions bio adsorbent

2020 ◽  
Vol 785 ◽  
pp. 012029
Author(s):  
Nurrul Assyikeen Md. Jaffary ◽  
Nor Hasimah Mohamed ◽  
Khoo Kok Siong ◽  
Sofian bin Ibrahim ◽  
Siti Nor Syuhada Bt Hamdan ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Glycidyl Methacrylate ◽  
Natural Rubber Latex ◽  
Rubber Latex ◽  
Grafting Polymerization

Reesterification of ethyl acetate by propanol catalysed by glycidyl methacrylate copolymers containing sulphonic acid groups

1981 ◽  
Vol 46 (8) ◽  
pp. 1941-1946 ◽  
Author(s):  
Karel Setínek
Keyword(s):  
Liquid Phase ◽  
Ethyl Acetate ◽  
Kinetic Study ◽  
Gas Phase ◽  
Nonlinear Regression ◽  
Kinetic Data ◽  
Glycidyl Methacrylate ◽  
Kinetic Equations ◽  
Methacrylate Copolymers ◽  
Styrene Divinylbenzene

A series of differently crosslinked macroporous 2,3-epoxypropyl methacrylate-ethylenedimethacrylate copolymers with chemically bonded propylsulphonic acid groups were used as catalysts for the kinetic study of reesterification of ethyl acetate by n-propanol in the liquid phase at 52 °C and in the gas phase at 90 °C. Analysis of kinetic data by the method of nonlinear regression for a series of equations of the Langmuir-Hinshelwood type showed that kinetic equations which describe best the course of the reaction are the same as for the earlier studied sulphonated macroporous styrene-divinylbenzene copolymers. Compared types of catalysts differ, however, in the dependence of their activity on the degree of crosslinking of the copolymer used.

Complexes of copper(II) and nickel(II) with a Schiff base bonded to a polymeric support

1983 ◽  
Vol 48 (7) ◽  
pp. 2021-2027 ◽  
Author(s):  
Eliška Kálalová ◽  
Olga Populová ◽  
Štěpánka Štokrová ◽  
Pavel Stopka
Keyword(s):  
Magnetic Properties ◽  
Schiff Base ◽  
Coordination Sphere ◽  
Polymer Matrix ◽  
Glycidyl Methacrylate ◽  
Epr Spectra ◽  
Polymeric Support ◽  
Tetrahedral Configuration ◽  
Paramagnetic Complexes

Copper(II) and nickel(II) ions were bonded in complexes of salicylideneimine type on a glycidyl methacrylate-ethylenedimethacrylate copolymer. The geometry of the complexes on the polymer was studied by measuring their magnetic properties, EPR spectra, and ultraviolet-visible spectra.Only paramagnetic complexes possessing a pseudo-tetrahedral configuration were found. The effect of the polymer matrix and of the immobility of the bonded Schiff base on the distortion of the coordination sphere of the central ion is discussed.

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