In this study, results of the crystallization of iron-rich glasses are summarized. Thermogravimetry (TG)±di€erential thermal analysis (DTA) were utilized to explain the phase formations and the surface oxidation of FeO to yield Fe 2 O 3. The crystal phases fraction was evaluated utilizing X-ray di€raction analysis (XRD). Low angle XRD technique was used to investigate the distribution of the cr...

The synergistic effect of nucleating agents and plasticizers on the thermal and mechanical performance of PLA nanocomposites was investigated with the objective of increasing the crystallinity and balancing the stiffness and toughness of PLA mechanical properties. Calcium carbonate, halloysite nanotubes, talc and LAK (sulfates) were compared with each other as heterogeneous nucleating agents. B...

The crystallization of the 3F5FPhF6 compound from liquid crystalline antiferroelectric smectic CA* phase is investigated in various conditions using differential scanning calorimetry and polarizing optical microscopy. kinetics isothermal melt cold studied on basis Avrami model. non-isothermal analysed Ozawa model activation energy determined by Augis-Bennett, Friedman’s isoconversional Matusita...

We show the global existence of weak solutions for a free-boundary problem arising in the non-isothermal crystallization of polymers. In particular, the free interface is shown to be of codimension one for every time t in two space dimensions; Hölder continuity of the temperature u is proven.

We consider a non-isothermal multi-phase field model. We subsequently discretize implicitly in time and with linear finite elements. The arising algebraic problem is formulated in two variables where one is the multi-phase field, and the other contains the inverse temperature field. We solve this saddle point problem numerically by a non-smooth Schur–Newton approach using truncated non-smooth N...

The effect of Mw on the non-isothermal crystallization kinetics of metallocene linear polyethylene (m-PE) was studied using modulated differential scanning calorimetry. Six linear m-PEs of molecular weights in the range 122-934 kg/mol were prepared by gas phase polymerization. The cooling rate was varied in the range 2–20C/min and it has significantly affected the crystallization behavior. The ...

Isothermal crystallization studies were performed on the bulk glass forming alloy Pd40Cu30Ni10P20 in the undercooled liquid region between the glass transition and liquidus temperature, resulting in a complete time–temperature–transformation ~TTT! diagram for crystallization. The TTT diagram shows a typical ‘‘C’’ shape with the nose at 50 s and 680 K. Assuming steady state nucleation and a diff...

Non-isothermal crystallization kinetics of polydioxanone (PDO), a polymer with well-established applications as bioabsorbable monofilar suture, was investigated by Avrami, Mo, and isoconversional methodologies. Results showed Avrami exponents appearing in a relatively narrow range (i.e., between 3.76 and 2.77), which suggested a three-dimensional spherulitic growth and instantaneous nucleation ...