Thermal Decomposition Kinetics of High Impact Polystyrene/Organo Fe‐montmorillonite Nanocomposites

Abstract

In this article, high impact polystyrene/organo Fe-montmorillonite (HIPS/Fe-OMT) nanocomposites were prepared by melting intercalation. The thermal stability of HIPS/Fe-OMT nanocomposites increased significantly compared to that of HIPS examined in thermal degradation conditions. Kinetic evaluations were performed by Kissinger, Flynn-Wall-Ozawa, Friedman methods and multivariate nonlinear regression. Apparent kinetic parameters for the overall degradation were determined. The results showed that the activation energy of HIPS/Fe-OMT nanocomposites was higher than that of HIPS. A very good agreement between experimental and simulated curves was observed in dynamic conditions. Their decomposition reaction model was a single-step process of an nth-order reaction.

Identification and characterization of plastics from small appliances and kinetic analysis of their thermally activated pyrolysis

“…In particular, two values for ABS (179.3 and 175.8 kJ mol À1 [28,47]) are only slightly lower than the average value of Keyb in Table 6, while other E a values found for pyrolysis of ABS depend remarkably on the heating rate considered [26], probably due to the method used (modelfitting) that sometimes may provide unreliable results [41]. Literature E a data on pyrolysis of virgin HIPS spread over a wide range, but the values determined by Liu and coworkers [27] agree well with those found in this study (within the estimated uncertainties). E a mean value for pyrolysis of PBT is slightly higher than literature ones [29,30] probably because of the presence of a high content of additives in the Black slot sample (Table 3).…”

Thermal and spectroscopic (TG/DSC–FTIR) characterization of mixed plastics for materials and energy recovery under pyrolytic conditions

“…In addition, a gas with a high caloric value may be used as fuel in the process and a solid residual stream, the char, useable as activated carbon or fillers. On the other hand, a remarkable amount of literature data can be collected from pyrolysis kinetics and thermal stability studies focused on single commercial or virgin polymers [10][11][12][13][14][15][16].…”

Improving the surface insulation of epoxy resin by plasma etching

“…Liu et al used a glow-discharge plasma to modify the surface of biaxially oriented polypropylene (BOP) for biological use and studied the influence of various plasma parameters on its surface properties. They found that the hydrophilicity, active chemical functional groups and surface structure of the film were all significantly changed after plasma modification [7]. The induced modification of the surface was not permanent, since the surface tended to recover to its untreated state.…”