The non-isothermal crystallization (NIC) of isotactic polypropylene (iPP) and its composites with submicronic talc particles (μ-talc) was investigated by differential scanning calorimetry. The modeling of the NIC kinetics of the iPP matrix was performed using Jeziorny-modified Avrami’s model, Ozawa’s and Mo’s theoretical approaches. The Jeziorny’s ...
Published in Journal of Sol-Gel Science and Technology
AbstractIn this paper, yttria-magnesia composite nanopowders with high specific surface area were synthesized by the sol–gel method. The crystallization kinetics of MgO–Y2O3 composite nanopowders were studied by the non-isothermal differential scanning calorimetry (DSC) technique. The crystallization activation energy of MgO–Y2O3 composite nanopowd...
Published in Journal of Thermal Analysis and Calorimetry
Semi-aromatic copolyamides PA10T10I and PA10T10F based on bio-based poly(decamethylene terephthalamide) (PA10T) were synthesized by a two-step polycondensation technique. The nonisothermal crystallization of these semi-aromatic polyamides was investigated by differential scanning calorimetry. Avrami theory modified by Jeziorny and Mo equation was u...
Published in Journal of Thermal Analysis and Calorimetry
The non-isothermal crystallization of the polyamide 66 (PA66) reinforced with 15 mass% glass fibers and/or 0.4 mass% carbon black has been the object of a thermal analysis by differential scanning calorimetry with various cooling rates ranging from 2 to 25 °C min−1. The modified Avrami’s equation, Ozawa’s theory and Mo’s method were applied to stud...
In the present study organic-inorganic hybrid nanocomposites of cross-linked polyethylene (XLPE) with 0, 2, 5 and 10 wt% of trimethoxyoctyl- silane surface treated ZnO nanoparticles were prepared by melt mixing. Non-isothermal crystallization kinetics is examined in detail to reveal the crystallization characteristics of the cross-linked system (XL...
Published in Thermochimica Acta
The influence of 10wt.% of different functional mineral fillers viz. calcium carbonate (CaCO3), talc and wollastonite on the nonisothermal crystallization kinetis of poly(butylene terephthalate) (PBT) has been investigated by differential scanning calorimetry. Among them, talc showed significant nucleation effect by increasing the crystallization t...
Polypropylene (PP)/layered double hydroxide (LDH) nanocomposites were prepd. via melt intercalation using dodecylsulfate anion modified LDH and maleated PP as compatibilizing agent. Evidently the interlayer anions in LDH galleries react with maleic anhydride groups of PP-g-MA and lead to a finer dispersion of individual LDH layers in the PP matrix....
A series of poly(butylene succinate-co-butylene 2-methyl succinate)s were prepared through variations in the molar fraction of succinic acid to 2-methyl succinic acid, and the effects of methyl substitution on the shear-induced crystallization, nonisothermal crystallization behavior, dynamic rheological properties, crystal morphology, and mechanica...
