scholarly journals Determination of Small Quantities of Acetone in Methyl Methacrylate Monomer

1958 ◽  
Vol 31 (3) ◽  
pp. 369-372 ◽  
Author(s):  
Yuzi Takayama ◽  
Fumikazu Tokiwa
Keyword(s):  
Methyl Methacrylate ◽  
Methacrylate Monomer ◽  
Methyl Methacrylate Monomer

Polarographic Determination of Methyl Methacrylate Monomer in Polymers

1956 ◽  
Vol 28 (6) ◽  
pp. 983-985 ◽  
Author(s):  
R. J. Lacoste ◽  
Isadore. Rosenthal ◽  
C. H. Schmittinger
Keyword(s):  
Methyl Methacrylate ◽  
Polarographic Determination ◽  
Methacrylate Monomer ◽  
Methyl Methacrylate Monomer

scholarly journals Effect of Ferocene Concentration on the Percent Conversion and Molecular Weight of Poly(Methyl Methacrylate) Homopolymers

2017 ◽  
Vol 14 (2) ◽  
pp. 311-319
Author(s):  
Baghdad Science Journal
Keyword(s):  
Molecular Weight ◽  
Free Radical ◽  
Methyl Methacrylate ◽  
Benzoyl Peroxide ◽  
Radical Polymerization ◽  
Free Oxygen ◽  
Poly Methyl Methacrylate ◽  
Methacrylate Monomer ◽  
Percent Conversion ◽  
Methyl Methacrylate Monomer

This research is addressing the effect of different ferrocene concentration (0.00, 2.15x10-3, 4.30x10-3, 8.60x10-3, and 12.9x10-3) on the bulk free radical polymerization of methyl methacrylate monomer in benzene using benzoyl peroxide as initiator. The polymerization was conducted at 60º C under free oxygen atmosphere. The resulting polymers were characterized by FTIR. The results were compared with the presence and absence of ferrocene at 10% conversion. The %conversion was 3.04% with no ferrocene present in the polymerization medium and its increase to 9.06 with a first lowest ferrocene concentration added, i.e. 2.15 x10-3mol/l. This was positively reflected on the poly(methyl methacrylate) molecular weight measured by viscosity technique, especially in the presence of ferrocene.

Methyl methacrylate monomer–polymer equilibrium in solid polymer

2007 ◽  
Vol 23 (1) ◽  
pp. 88-94 ◽  
Author(s):  
C.Y.K. Lung ◽  
B.W. Darvell
Keyword(s):  
Methyl Methacrylate ◽  
Solid Polymer ◽  
Methacrylate Monomer ◽  
Methyl Methacrylate Monomer

Rapid curing prospects of geopolymer cementitious composite using frontal polymerization of methyl methacrylate monomer

2021 ◽  
Vol 309 ◽  
pp. 125198
Author(s):  
Shaurav Alam ◽  
Tanvir Manzur ◽  
Ashlesh Banjara ◽  
Sven Eklund ◽  
Adarsh Radadia ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Frontal Polymerization ◽  
Cementitious Composite ◽  
Methacrylate Monomer ◽  
Methyl Methacrylate Monomer

Synthesis and grafting of carboxymethyl cellulose from environmental pollutant cellulosic wastes of textile industry

2016 ◽  
Vol 20 (3) ◽  
pp. 126-135 ◽  
Author(s):  
Md. Ibrahim H. Mondal ◽  
Firoz Ahmed
Keyword(s):  
Methyl Methacrylate ◽  
Carboxymethyl Cellulose ◽  
Reaction Medium ◽  
Value Added ◽  
Single Step ◽  
Cellulose Derivatives ◽  
Content Type ◽  
Cellulosic Waste ◽  
Methacrylate Monomer ◽  
Methyl Methacrylate Monomer

Purpose This study aims to explore the use of knitted rag by synthesizing different grades of carboxymethyl cellulose (CMC) by applying multiple-step carboxymethylation techniques. Design/methodology/approach CMC was synthesized from knitted rag, a cellulosic waste of textile and garment industries, in aqueous ethanolic sodium hydroxide and subsequently mono-chloroacetic acid reaction medium. Low-substituted to high-substituted products were obtained from single-step to seven-step carboxymethylation of cellulose. In this way, it was possible to produce low-cost and different grades of substituted carboxymethylated cellulose. The synthesized CMC was characterized, and their physical properties were investigated. The structure of CMC and grafted CMC were investigated by Fourier transform infrared spectroscopy. Findings Solubility, CMC content, degree of substitution and molecular weight of CMC were increased gradually with the increase in the number of reaction steps, although fourth step attained the optimum. The cellulosic waste of knitted rag can easily be used to produce value-added products such as CMC and other cellulose derivatives, and that will ultimately reduce the pollution problems from this waste. Originality/value Grafting of prepared CMC film with methyl methacrylate monomer increased their strength, although decreased rigidity and moisture content because the incorporation of hydrophobic methyl methacrylate monomer was observed.

The Release of Residual Monomeric Methyl Methacrylate from Acrylic Appliances in the Human Mouth: An Assay for Monomer in Saliva

1988 ◽  
Vol 67 (10) ◽  
pp. 1295-1299 ◽  
Author(s):  
S. Baker ◽  
S.C. Brooks ◽  
D.M. Walker
Keyword(s):  
Liquid Chromatography ◽  
Methyl Methacrylate ◽  
Limit Of Detection ◽  
Base Plate ◽  
Maximum Amount ◽  
Gas Liquid Chromatography ◽  
Healthy Human ◽  
Whole Saliva ◽  
Methacrylate Monomer ◽  
Methyl Methacrylate Monomer

A gas-liquid chromatography assay has been developed for the estimation of methyl methacrylate monomer (MMA) in whole saliva, with a lower limit of detection in the order of 1μg/mL. Healthy human dentate subjects wore recently made autopolymerized or heat-polymerized polymethyl methacrylate (PMMA) palatal appliances. MMA released into saliva was detected for up to one week after insertion of autopolymerized appliances, with a maximum concentration of 45 μg/mL in whole saliva or 180 μg/mL in the salivary film on the fitting surface. The MMA was not detected in blood or urine. MMA was also present in the saliva of volunteers wearing appliances which had been heat-polymerized at 70°C for one hr but not cured at 70°C for three hr. The maximum amount of monomer released by an autopolymerized base plate was 29.5 μg in the first hour, which, while not a toxic or primary irritant dose, could possibly sensitize patients or elicit an allergic reaction. For minimization of monomer release, autopolymerized appliances should be immersed for 24 hr in water before being worn.

Syntheses and structures of nickel(0) complexes containing the methyl methacrylate monomer as ligand

1995 ◽  
pp. 2033 ◽  
Author(s):  
Adam P. Jarvis ◽  
David M. Haddleton ◽  
John A. Segal ◽  
Andrew McCamley
Keyword(s):  
Methyl Methacrylate ◽  
Methacrylate Monomer ◽  
Methyl Methacrylate Monomer
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