Polymer stabilization thermooxidative degradation

L. Rychla and J. Rychly, New concepts in chemiluminescence at the evaluation of thermooxidative stability of polypropylene from isothermal and non-isothermal experiments. In A. Jimenez and G.E. Zaikov (Eds.), Polymer Analysis and Degradation, Nova Science Publishers, New York, 2000 p. 124. 

This volume is including information about thermal and thermooxidative degradation of polyolefine nanocomposites, modeling of catalytic complexes in the oxidation reactions, modeling the kinetics of moisture adsorption by natural and synthetic polymers, new trends, achievements and developments on the effects of beam radiation, structural behaviour of composite materials, comparative evaluation of antioxidants properties, synthesis, properties and application of polymeric composites and nanocomposites, photodegradation and light stabilization of polymers, wear resistant composite polymeric materials, some macrokinetic phenomena, transport phenomena in polymer matrix, liquid crystals, flammability of polymeric materials and new flame retardants. 

A triazine compound, Ethanox 314, of the following structure by Albemerie Corp. has a moderate molecular weight of 784 and a melting point range of 218-223°C [118]. It is claimed to retard thermooxidative degradation in various polymers and to enhance their light stability. The antioxidant exhibits high resistance to extraction and low volatility ... 

Gugumus F (1996) Thermooxidative degradation of polyolefins in the soUd state Part 1. Experimental kinetics of functional group formation. Polymer Degradation and Stability 52 131-144... 

For quantitative determination of the concentrations of antioxidants in PP that are required for the analysis of diffusion data, an isothermal DTA technique was developed that directly uses the effect of antioxidants on the thermooxidative stability of the polymers. Especially at elevated temperatures and in the presence of oxygen, polyolefines undergo thermooxidative degradation which follows a radical mechanism [98]. 

Thermooxidative degradation, which is more of a problem with polyether polyurethanes, can be inhibited by the addition of antioxidants. Mathur et al. have studied the effectiveness of several commercial antioxidants for stabilizing polyether polyurethanes against UV and thermally induced oxidation. Stabilizers against thermooxidation include hindered phenols, aromatic amines, and phosphites. Commercially available antioxidants have recently been reviewed by Allbee. Replacement of some, or all, of the ether linkages in polyether polyurethanes by silicone has led to a marked improvement in the thermooxidative stability of the resulting polymer. " ... 

Thermal and thermooxidative stability of synthesized ferrocene-containing polymers was studied by TGA method. It was found that thermal and thermooxidative degradation followed the basic features of such processes. Thus, the higher degree of decomposition in air was observed for all investigated polymers compared to that in... 

D. Laachachi, M. Ferriol, M. Cochez, D. Ruch, and J.-M. Lopez-Cuesta, The catalytic role of oxide in the thermooxidative degradation of poly(methyl methacrylate)-Ti02 nanocomposites. Polymer Degradation and Stability, 93 (2008), 1131-7. 

The role of peroxides in the thermooxidative degradation of polypropylene. Polymer Degradation and Stability, 51 (1996), p. 3-13... 

Speed reduction thermooxidative degradation of the polymer containing 4-methyl-2,6-diizobomylphenol observed values corresponding to oxidative degradation rate of unplasticized polymer. Obviously, terpen-phenol plasticizer protects from oxidation, which in turn is due to solvation stabilization increases the thermal stability of PVC (known effect of "Echo stabilization") [6],... 

Polymer Degradation and Stability 57,No.3, 1997, p.313-24 THERMOANALYTICAL STUDY OF THE EFFECT OF EAAAND STARCH ON THE THERMOOXIDATIVE DEGRADATION OF LDPE... 

L. Matisova-Rychla and J. Rychly, Inherent relations of chemiluminescence and thermooxidation of polymers, In R.L. Clough, N.C. Billingham and K.T. Gillen (Eds.), Advances in Chemistry, Series 249 Polymer Durability, Degradation, Stabilization and Lifetime Prediction. American Chemical Society, Washington, DC, 1996, p. 175. 

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