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The thermal degradation kinetics and mechanisms of thermosetting resins based on 4-( N -maleimido)phenylglycidylether (MPGE) were investigated with TGA, GC/MS, and FTIR. Two samples from MPGE cured with 4,4′-diaminodiphenylmethane (DDM) and diethylphosphite (DEP), respectively, were studied....
The thermal degradation of polyaniline films polymerized in situ on silicon windows, and protonated with hydrochloric, sulfuric, or phosphoric acid, has been studied by FTIR spectroscopy. The conductivity decrease and spectral shifts induced by thermal ageing at 150 °C have been examined and are...
Use of water instead of chlorofluorocarbons in foaming processes results in increased slabstock temperature and concomitant scorching which often occur more easily in the fire retardant foams. However, not all fire retardants aggravate scorch. Interaction of a number of fire retardants with...
The thermal and photooxidation of high styrene–butadiene copolymer (SBC) with high styrene content (K-resin) have been studied using a variety of analytical and spectroscopic methods including yellowness, luminescence and FTIR spectroscopy coupled with crosslinking and hydroperoxide analysis in...
The influence of nano and micron particle grade anatase and rutile titanium dioxide pigments on the efficiency of the phenolic antioxidant Irganox 1010 has been studied using the model radical reaction of initiated (AIBN) cumene oxidation. This low-molecular reaction serves for simulating the...
Methanolysis investigation of a model polyurethane (PUR), poly(ethylene=methylene bis(4-phenylcarbamate)), and the commercially available PUR foam, Sofran ® is reported. The methanolysis conditions were in the temperature range from 160 to 300 °C and at pressures up to 15 MPa, partly in the...
We prepared a series of novel water-resistant cellulose films by coating castor oil-based polyurethane (PU)/benzyl konjac glucomannan (B-KGM) semi-interpenetrating polymer networks (semi-IPN) on regenerated cellulose (RC) films, which was obtained from cotton linter in 6 wt% NaOH/5 wt% thiourea...
Biodegradability of polyethylene wax (PEwax) was studied comparatively between degraders in two different classes: bacteria and fungi. Gel permeation chromatography patterns were obtained before and after cultivation of a bacterial consortium KH-12 and a fungus, Aspergillus sp. AK-3 in culture...
The influence of processing, physical ageing and UV-irradiation on the degradation behaviour of heat-stabilized poly(oxymethylene) (POM) homo- and copolymers was studied by means of thermogravimetric analysis (TGA). For that purpose, injection moulded specimens have been processed, followed by...
New diepoxy crosslinkers (Cr-1, Cr-2 and Cr-3) containing thermally degradable sulfonate ester linkages were synthesized and characterized. From FT-IR and UV spectroscopic experiments, it was confirmed that Cr-1 and Cr-2 photochemically generated sulfonic acid, while Cr-3 was photochemically...
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