Thermal degradation of poly(allyl methacrylate) by mass spectroscopy and TGA

Vardareli, Tugba Kantav
Keskin, Selda
Usanmaz, Ali
Allyl methacrylate, AMA was polymerized in CCl4 solution by alpha,alpha'-azoisobutyronitrile at 50 degrees C. The thermal degradation mechanism of PAMA was characterized by MS, TGA-FT-IR and FT-IR-ATR methods. The mass spectrum and TGA thermogram showed two stage degradation. The first stage of degradation was mostly linkage type degradation for the fragmentation of pendant allyl groups at 225 - 350 degrees C. In the second stage, at 395 - 515 degrees C, the degradation is random scission and depolymerization types. This was also supported by direct thermal pyrolysis of polymer under vacuum. The degradation fragments of MS and TGA were in agreement. In the degradation process, monomer degraded further to CO, CO2, allyl and ether groups. No strong monomer peak was observed in mass spectrum.


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Sahmetlioglu, Ertugrul; Arikan, Ufuk; Toppare, Levent Kamil; Yuruk, Huseyin; Mart, Hasan (Informa UK Limited, 2006-10-01)
Oligo-2-aminophenol (OAF) was synthesized with oxidative polycondensation of 2-aminophenol and hydrogen peroxide in an aqueous alkaline medium at 80 degrees C. Oligo-2-aminophenol with thiophene side groups (TOAF) was obtained by the reaction of OAF and thiophene-3-acetic acid. Graft copolymers of TOAF and pyrrole were synthesized by electrochemical polymerization in p-toluene sulfonic acid (PTSA)/water medium. Characterization of the graft copolymer (TOAF-g-Py), was carried out by combination of techniques...
Microwave-assisted simultaneous synthesis of conducting, non-conducting and cross-linked polymers from sodium 2,4,6-tribromophenolate and LiOH
Celik, Gueler Bayrakli; Kisakuerek, Duygu (Informa UK Limited, 2007-01-01)
Poly(dibromophenylene oxide) (P) and conducting polymer (CP) and/or cross-linked polymer (CLP) were synthesized simultaneously from sodium 2,4,6-tribromophenol ate and LiOH by microwave energy in a very short time interval. Polymerizations were carried out (i) under constant microwave energy and constant amount of water with different time intervals ranging from I to 20 min, or (ii) at constant time intervals and constant amount of water with variation of microwave energy ranging from 90 to 900 W, or (iii) ...
TIMUCIN, M; MUAN, A (Wiley, 1992-06-01)
Activities of NiO were measured in the oxide and spinel solutions of the system MnO-NiO-Al2O3 at 1300-degrees and 1400-degrees-C with the aim of deriving information on the thermodynamic properties of the spinel phases. Synthetic samples in selected phase assemblages of the system were equilibrated with metallic nickel and a gas phase of known oxygen partial pressures at a total pressure of 1 atm. The data on NiO activities and directions of conjugation lines between coexisting oxide and spinel phases were ...
Poly(ethylene terephthalate)/Carbon Nanotube Composites Prepared With Chemically Treated Carbon Nanotubes
Yesil, Sertan; Bayram, Göknur (Wiley, 2011-07-01)
Surfaces of multiwalled carbon nanotubes (CNT) were functionalized by treatment with strong acid mixture (purification) followed by modification with sodium dodecyl sulfate, poly(ethylene glycol) (PEG), and diglycidyl ether of Bisphenol A (DGEBA). Poly(ethylene terephthalate) (PET)-based conductive polymer composites were prepared by using these CNT by means of melt mixing with a twin screw extruder. Amount of carboxylic acid groups on the CNT surface increased after acid treatment but decreased with surfac...
Electrochemical polymerisation of 2-aminofluorene in ethylalcohol/water medium
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Electrochemical polymerisation of 2-aminofluorene, 2AF, was investigated in ethylalcohol/water mixture (3:2, v:v) in the presence of HClO4 as the supporting electrolyte via constant potential electrolysis, CPE. Prior to CPE, electrochemical behaviour of the monomer was investigated in the same solvent electrolyte couple utilising cyclic voltammetry, CV. Electrochemical polymerisation of the monomer yielded insoluble, dark bluish-green, conducting polymer deposit on the electrode surface. Characterisation of...
Citation Formats
T. K. Vardareli, S. Keskin, and A. Usanmaz, “Thermal degradation of poly(allyl methacrylate) by mass spectroscopy and TGA,” JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY, pp. 1569–1581, 2006, Accessed: 00, 2020. [Online]. Available: