Now showing items 1-10 of 834
New thermal study of polymerization and degradation kinetics of methylene diphenyl diisocyanate
This work investigates the thermal polymerization process of a methylene diphenyl diisocyanate (MDI) monomer as well as its thermal degradation following the ICTAC recommendations. MDI monomer is widely used as a synthetic ...
Studies on thermal-oxidative degradation behaviours of raw natural rubber: PRI and thermogravimetry analysis
Thermal-oxidative degradation behaviours of raw natural rubber (NR) have been investigated by using thermogravimetry analysis in inert and oxidative atmospheres and the plasticity retention index (PRI). The activation ...
Thermal degradation of geomembranes after exposure to heat
(Millpress Science Publishers, 2006-01-01)
HDPE and PVC geomembranes are sensitive to changes in their properties when in contact with high temperatures. The effects of hot temperature on polymeric geomembranes are assessed by the ASTM D794 and ASTM D5721.This paper ...
Impact of different nanoparticles on the thermal degradation kinetics of phenolic resin nanocomposites
The effect of different contents of nano-fillers: carbon black (CB), bentonites (original (Bent) and modified with phosphonium salt (B-TBHP)) and commercial modified montmorillonite (C30B) on the thermal degradation of ...
Influence of the degradation on the stress cracking values of high density polyethylene (HDPE) geomembranes after different exposures
This paper presents results from stress cracking (SC) tests performed in both fresh and exposed high density polyethylene (HDPE) geomembranes (GM). The HDPE GMs were exposed to ultraviolet radiation, thermal aging (air ...
A Kinetic Study of the Thermal Degradation of Chitosan-Metal Complexes
(JOHN WILEY & SONS INC, 2009)
Nonoxidative thermal degradation kinetic of polyamide 6,6 reinforced with carbon nanotubes
(Sage Publications Ltd, 2013-11-01)
The thermal degradation of the polyamide 6,6 (abbreviated henceforth as PA 6,6) reinforced with different concentrations of carbon nanotubes (CNTs) was investigated by means of thermal analysis. In this study, the ...
Thermal Degradation and Kinetic Parameters of Polyester and Poly(Lactic Acid) Blends Used in Shopping Bags in Brazil
(New York, 2014)
In this work, synthetic polyester and poly(lactic acid) blends used as biodegradable shopping plastic bags were studied, together with control samples of polyethylene containing pro-oxidant catalysts (called “oxidegradable ...