Ethylene-vinyl acetate copolymer thermal degradation

Allen, N.S., et al. Aspects of the thermal oxidation of ethylene vinyl acetate copolymer. Polym. Degrad. Stab. 68(3), 363-371 (2000)... 

C. Nyambo and C. A. Wilkie, Layered double hydroxides intercalated with borate anions Fire and thermal properties in ethylene vinyl acetate copolymer. Polymer Degradation and Stability, 94 (2009), 506-12. 

Costache, M. C., Jiang, D. D., and Wilkie, C. A. Thermal degradation of ethylene-vinyl acetate copolymer nanocomposites, Polymer (2005), 46, 6947-6958. 

For ethylene-propylene copolymer a mathematical expression has been derived for the dependence of the rate constant for thermal degradation on molecular weight, composition, and temperature. It is claimed that the expression is also valid for other linear polymers. The mechanism of radical crosslinking, grafting, and degradation of ethylene—vinyl acetate copolymers has been reviewed."... 

A. Morgan, L. Chu, and J. Harris, A flammability performance comparison between synthetic and natural clays in polystyrene nanocomposites Thermal degradation of ethylene-vinyl acetate copolymer nanocomposites. Fire and Materials, 29 (2005), 213-29. 

Polyaniline-montmorillonite nanocomposites were prepared without surface modification of montmorillonite [42]. The polymer nanocomposite was significantly more thermally stable when compared to the pure polymer. Ethylene-vinyl acetate copolymer-clay nanocomposites apparently thermally degrade by a different mechanism than the pure polymer [43]. These observations are consistent with the above thesis. 

Figure 14 UV absorption spectra for PVAC (left) and ethylene/vinyl acetate copolymers (right) (as films), initially and after degradation to various temperatures at 5°Cmin" PVA(i (A) undegraded, (B) 289°C, (C) 301 °C, (D) 313 °C, (E) 332°C, (F) 381 X 33% VAC copolymer (A) undegraded, (B) 323 X, (C) 350 X, (D) 356 X, (E) 374 X, (F) 425 X. The dotted curve is for a 12% VAC copolymer degraded to 356 °C (reproduced by permission of John Wiley and Sons Ltd from J. Thermal Anal,...

In a study of the flame retardance of styrene-methyl methacrylate copolymer with covalently bound pyrocatechol-vinyl phosphate, diethyl p-vinyl benzyl phosphonate, or di(2-phenyl ethyl phosphonate) groups. Ebdon and co-workers [23] obtained data on their decomposition behaviour. This was achieved by reducing the rate of liberation of flammable methyl methacrylate monomer during combustion. Possible mechanisms for these processes are suggested. Other methacrylate copolymers which have been the subject of thermal degradation studies include PMMA-N-methylmaleimide-styrene [24] and PMMA-ethylene vinyl acetate [25-27]. 

The early hot melt adhesives were not strictly definable as rubber-based adhesives. Most rubber polymers such as natural rubber and random SBR are of such molecular weight and structure that they do not melt readily to a workable coating consistency at a temperature below which thermal degradation and decomposition take place. Certain synthetic polymers, however, lend themselves to the formulation of a wide range of hot melt adhesive compositions. Polyamide and polyester resins, ethylene-vinyl acetate (EVA) copolymers, ethylene-ethyl acrylate (EEA) copolymers, low molecular weight polyethylene and amorphous polypropylene, and certain vinyl ethers have found application in hot melt adhesives. These adhesives have found wide use in packaging, industrial, and construction applications. 

Madorsky, S. L., Thermal Degradation of Organic Polymers , Interscience, New York, 1964. A compilation of the existing knowledge on polymers and copolymers of styrene, alkenes, halo-carbons, vinyl acetate, acrylonitrile, butadiene, isoprene, poly(ethylene terephthalate), polybenzyl, polyxylene, phenol, formaldehyde resin and cellulosic polymers Polym, Rev, vol. 7). 

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