Journal ArticleDOI
Molecular mass changes in the thermal degradation of poly-α-methylstyrene
M. Guaita,O. Chiantore +1 more
TLDR
In this article, the experimental molecular mass decrease in the thermal depolymerization of poly-α-methylstyrene at 240°C in vacuum was simulated by Monte Carlo calculations, performed on the basis of certain hypotheses on the chemical evolution of the two chain radicals formed in a random scission reaction.About:
This article is published in Polymer Degradation and Stability.The article was published on 1985-01-01. It has received 32 citations till now. The article focuses on the topics: Depolymerization & Thermal depolymerization.read more
Citations
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Book ChapterDOI
15 – Thermal Degradation
TL;DR: In this paper, the authors present some useful aspects of thermal degradation, including the potential use of a polymeric material and, in the extreme case, the hazards presented by the polymer in a fire situation.
Journal ArticleDOI
Polymer combustion and flammability—Role of the condensed phase∘
TL;DR: In this article, the effects of polymer characteristics on combustion and flammability are not nearly as well understood as those in the gas phase, and a nonhalogenated char-forming flame-retardant approach is suggested to improve the fire performance of polymers.
Journal ArticleDOI
Recent developments in the thermal degradation of polystyrene—A review
TL;DR: A critical review of the radical mechanisms involved in the thermal degradation of polystyrene is presented in this paper, where four unsolved problems are discussed: 1. The existence and the behaviour of the radicals borne on a methylene end group after a random chain scission; 2. The selectivity of hydrogen abstraction from secondary or tertiary C atoms in the main chain unit; 3. The termination mechanism which seems to be simply the disappearance of small radicals by evaporation; and 4.
Journal ArticleDOI
Thermal and mechanical degradation during polymer extrusion processing
TL;DR: In this article, the degradation effects of melt extrusion under different thermo-mechanical conditions on polymethyl-methacrylate and polystyrene are investigated.
Journal ArticleDOI
Behavior of primary radicals during thermal degradation of poly(methyl methacrylate)
TL;DR: In this article, the behavior of primary radicals formed from the random scission of anionically polymerized poly(methl,l methacrylate), PMMA, during thermal degradation is investigated by a theoretical and t.xperimental study.
References
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Journal ArticleDOI
On the Effect of High Energy Radiation to Polymers I. Cross-linking and Degradation
TL;DR: In this article, integro-differential equations are obtained to describe the variation of molecular weight distributions in a polymer substance caused by irradiation, and the solutions of these equations give the gel point and the average molecular weights.
Journal ArticleDOI
Degradation of chain molecules. 1. Exact solution of the kinetic equations
M. Ballauff,Bernhard A. Wolf +1 more
Journal ArticleDOI
‘Weak links’ in polystyrene
TL;DR: In this paper, a first step in the thermal degradation of polystyrene prepared by radical polymerization has been isolated by heating the polymer in the temperature range 199-280°C.
Journal ArticleDOI
Weight‐Average and z‐Average Degree of Polymerization for Polymers Undergoing Random Scission
TL;DR: In this article, closed expressions for the weight-average and the z-average degree of polymerization for polymers undergoing random scission processes are derived for any initial molecular size distribution and applied to the case where the initial distribution is the generalized Poisson type.