Mass spectrometric study on plasma reactions of methyl methacrylate-styrene mixtures

Date

1992-01-01

Author

Ozden (Orhan), Bilge
Hacaloğlu, Jale
Akovau, Guneri

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

169
views

0
downloads

Gas phase plasma reactions of various styrene (St) and methyl methacrylate (MMA) mixtures have been studied by the use of a mass spectrometer. The effects of rf power and composition of mixture on initial rates of consumption and on the reaction products have been investigated. The results indicate that St has a catalytic effect on the gas phase plasma polymerization of MMA, whereas MMA has an inhibiting effect on St gas phase plasma polymerization. Decomposition of monomers, at all compositions and rf powers studied, has been also detected.

Subject Keywords

Syndiotactic poly(methyl methacrylate), Radical polymerization

URI

https://hdl.handle.net/11511/30719

Journal

European Polymer Journal

DOI

https://doi.org/10.1016/0014-3057(92)90296-e

Collections

Graduate School of Natural and Applied Sciences, Article

Suggestions

OpenMETU
Core

PLASMA POLYMERIZATION AND COPOLYMERIZATION OF STYRENE AND METHYLMETHACRYLATE .1. PLASMA INITIATED POLYMERIZATION STUDIES ORHAN, BO; AKOVALI, G (1991-08-01) Plasma initiated polymerization and copolymerization is applied to two model compounds, styrene and methylmethacrylate, in a series of experiments. For this polymerization tubes with break seals in the middle having two different compartments are used. For samples without and with break seals-the latter is broken right after discharge-a random copolymer rich product; while for the others with break seals broken after certain times, a block copolymer is obtained, as traced out by NMR and IR studies.
Pyrolysis mass spectrometry analysis of thiophene capped poly(methyl methacrylate) and poly(methylthienyl methacrylate) Hacaloğlu, Jale; Toppare, Levent Kamil (2003-06-01) The thermal degradations of thiophene-capped poly(methyl methacrylate) and poly(methylthienyl methacrylate) were studied via direct pyrolysis mass spectrometry. No significant effect of heating rate on the thermal degradation behaviors of the polymers under investigation have been observed in the heating range studied. It has been determined that thermal degradation of thiophene-capped poly(methyl methacrylate), (TPMMA) mainly yields monomer as in the case of pristine poly(methyl methacrylate). An analogous...
Characterization of doped polypyrrole-poly(methylthienyl methacrylate) films via pyrolysis mass spectrometry Athar, Imran; Hacaloğlu, Jale; Toppare, Levent Kamil (2004-07-01) This work presents the characterization of p-toluene sulfonate doped polypyrrole-poly(methylthienyl methacrylate) films synthesized by electrochemical polymerization of pyrrole on a poly(methylthienyl methacrylate) coated anode. Pyrolysis mass spectrometry was used to characterize the polymer. The study was focused on the influence of each of the components on the thermal degradation behaviour of the other. The results indicated that decomposition of the matrix polymer, ie poly(methylthienyl methacrylate), ...
Mass spectrometric study of negative ions from acetyl derivatives Hacaloğlu, Jale; Suzer, S. (1989-01-01) A mass spectrometic technique capable of producing a low-energy and nearly monochromatic (fwhm ~ 0.2 eV) electron beam is developed and used to study the negative ions from five different acetyl derivatives CH3COX (X = Cl, C6H5, NH2, CH3, and H) at very low energies (0-10 eV). Negative ions are mainly produced by dissociative attachment and show resonance-like structures. To measure the excess energy imparted to the ions during ionization, a time-of-flight technique is applied. An ion with composition C2H30...
Mass spectrometric study of negative ions from unsaturated carbonyls Hacaloğlu, Jale; Gökmen, Ali; Baumgartel, H. (1989-01-01) Negative ion formation from some unsaturated carbonyl derivatives is investigated as a function of electron energy by using a monochromatic (0.2 eV) and low-energy (0-10 eV) electron beam and a mass spectrometer. Negative ions at low energies are formed via a dissociative attachment process. Appearance potentials of certain negative ions can be correlated with the electron-releasing or -withdrawing power of the substituents and/or with bond strengths. For example, the appearance potentials of C6H5CO" and C2...

Citation Formats

B. Ozden (Orhan), J. Hacaloğlu, and G. Akovau, “Mass spectrometric study on plasma reactions of methyl methacrylate-styrene mixtures,” European Polymer Journal, pp. 129–134, 1992, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30719.