نتایج جستجو برای: crystallization kinetics
تعداد نتایج: 118642 فیلتر نتایج به سال:
The kinetics of the isothermal crystallization process from the melt of pure poly(butylene succinate)-co-(butylene carbonate) (PBS-co-BC) and its blends with cellulose acetate butylate (CAB) (10–30 wt%) was studied by differential scanning calorimetry (DSC) and the well-known Avrami equation. In the blends, the overall crystallization rate of PBS-co-BC became slower with increasing CAB content....
The melting behavior and crystallization kinetics of PBN–PDEN and PBN–PTDEN copolymers were investigated using differential scanning calorimetry. Multiple endotherms were observed in all of the copolymers under investigation, originating from melting and recrystallization processes. By applying the Hoffman–Weeks method, the Tm1 of the a and b¢-PBN phases were derived. The Tm1 value of the b¢-fo...
Nucleation and growth of ice in the fibrous gas-diffusion layer (GDL) of a proton-exchange membrane fuel cell (PEMFC) are investigated using isothermal differential scanning calorimetry (DSC). Isothermal crystallization rates and pseudo-steady-state nucleation rates are obtained as a function of subcooling from heat-flow and induction-time measurements. Kinetics of ice nucleation and growth are...
Medical-profession-accepted and the US Food and Drug Administration (FDA)-approved biodegradable polymers have been used for tissue engineering applications over the last two decades due to their good biocompatibility and acceptable biodegradation properties. Poly(L-lactide) (PLLA) is a linear aliphatic biodegradable polymer and has been widely studied for use as a scaffolding material for huma...
The scientific and technological importance of advanced materials are summarized. The goverriing theories of glass transition, crystal nucleation and crystal growth are combined with t he overall theory of transformation kinetics to clarify the phenomenon of glass formation from the liquid state. Finally, examples of novel glasses as well as gIassceramics obtained from the controlled crystalliz...
Gel formation by surfactant molecules is argued to be a process similar to micellization rather than crystallization; it is controlled by thermodynamics rather than kinetics. The properties of surfactant-based gels are compared with those of gels with crystalline fibrillar networks, and questions associated with the nature of these gels are raised.
We shed light on the compositional, surface engineering and crystallization kinetics manipulations for FAPbI3 followed by a proposition unified testing protocols in order to scale-up solar cells from lab market.
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