Non-isothermal crystallization kinetics has been traditionally predicted using the Nakamura crystal growth model, which is an integral form of Avrami equation under assumption that non-isothermal can be explained a series infinitesimal isothermal steps. However, model often overpredicts fraction near end because ignoring slower secondary kinetics. In this study, dual proposed to capture both pr...

Abstract Understanding the effect of gamma‐ray irradiation on nonisothermal crystallization polymer during cooling is practical importance for applications and manufacturing crystallized polymer. In this work, we expose poly(4‐methyl‐1‐pentene) (PMP) to with different doses study irradiated PMPs. All PMPs exhibit a doublet peak in differential scanning calorimeter thermograms rates range 2.5–20...

We carry out an extensive comparison between Johnson–Mehl–Avrami–Kolmogorov (JMAK) theory of first-order phase transformation kinetics and phase-field (PF) results a benchmark problem on nucleation. To address the stochasticity problem, several hundreds simulations are performed to establish comprehensive, statistically significant analysis coincidences discrepancies PF JMAK kinetics. find that...

This study aimed to investigate the retrogradation rate of heat moisture treated sago and arenga starches using different approaches, including a thermal approach DSC (differential scanning calorimetry), rheological dynamic viscoelasticity as syneresis level. The autoclaving procedures prepared HMT at 20% content warmed 120°C for 60 min 90 starches, respectively. Avrami equation was used expres...

poly(ethylene adipte) and poly(ethylene adipate)/silica nanocomposite (pead/sio2) containing 3 wt. % sio2  were prepared by an in situ method. the examinations on the non-isothermal crystallization kinetic behavior have been conducted by means of differential scanning calorimeter (dsc). the avrami, ozawa, and combined avrami and ozawa equations were applied to describe the crystallization kinet...

Abstract This paper focusses on investigating and comparing the congruent crystallization of phosphate glasses with different degrees polymerization. The study was performed both powders, size fractions, coarse particles which can be assimilated to bulk. From DSC experiments, corroborated by SEM analysis, it demonstrated that LiPO3 crystallizes from surface whereas LiGe2(PO4)3 in whole volume. ...

Non-trans-fat (NTF) margarine was produced by substituting partially-hydrogenated palm oil in blend with fully-hydrogenated oil. Three types of NTF blends were used this study. To obtain an similar physical properties to the reference blend, which contain oil, melting and crystallization kinetics evaluated. The iodine value raw material measured, mixed form blends. Fatty acid composition (FAC) ...

Crystallization kinetics of Fe52Cr18Mo7B16C4Nb3 alloy was evaluated using X-ray diffraction, differential scanning calorimetric (DSC) tests and TEM observations in this research work. In effect, crystallization and growth mechanisms were investigated using DSC tests in four different heating rates (10, 20, 30, 40 K/min) and kinetic models (i.e. Kissinger- Starink, Ozawa, and Matusita methods). ...

The classical theory of solid-state transformation based on nucleation and growth processes, developed by Kolmogorov, Johnson Mehl, Avrami (KJMA theory), is widely used in many different fields research. In KJMA theory, two parameters (the frequency factor and, particularly, the exponent) can supply information about mechanisms involved transformation. Despite its apparent simplicity, one hand,...