Effect of carbonation and ultrasonication assisted hybrid drying techniques on physical properties, sorption isotherms and glass transition temperature of banana (Musa) peel powder

2021 ◽  
Author(s):  
Mandeep Kaur ◽  
Vinod Kumar Modi ◽  
Harish Kumar Sharma
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Physical Properties ◽  
Sorption Isotherms ◽  
Drying Techniques

Water sorption isotherms and glass transition temperature of spray dried tomato pulp

2008 ◽  
Vol 85 (1) ◽  
pp. 73-83 ◽  
Author(s):  
Athanasia M. Goula ◽  
Thodoris D. Karapantsios ◽  
Dimitris S. Achilias ◽  
Konstantinos G. Adamopoulos
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Water Sorption ◽  
Sorption Isotherms ◽  
Tomato Pulp ◽  
Spray Dried ◽  
Water Sorption Isotherms

scholarly journals Thermal and thermodynamic characterization of a dye powder from liquid turmeric extracts by spray drying

2016 ◽  
Vol 69 (1) ◽  
pp. 7845-7854 ◽  
Author(s):  
Aura Yazmin Coronel Delgado ◽  
Héctor José Ciro Velásquez ◽  
Diego Alonso Restrepo Molina
Keyword(s):  
Thermal Conductivity ◽  
Heat Capacity ◽  
Glass Transition ◽  
Thermal Properties ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Mass Loss ◽  
Spray Drying ◽  
Transient Flow ◽  
Sorption Isotherms

This study aimed to evaluate the thermodynamic properties of sorption isotherms and glass transition temperature (Tg) and the thermal properties of a dye powder obtained from turmeric extracts using spray drying. The sorption isotherms were evaluated at 15, 25 and 35 °C using the dynamic gravimetric method, wherein the isotherm data of the experiment were fit to GAB and BET models. Likewise, the Tg was measured using differential scanning calorimetry (DSC). Thermogravimetric analysis (TGA) was used to determine the mass loss, and the thermal properties (heat capacity, diffusivity and thermal conductivity) were determined using transient flow method. The results demonstrated that the GAB model best fit the adsorption data. The DSC analysis presented a glass transition temperature of 65.35 °C and a loss of volatiles at 178.07 °C. The TGA analysis indicated a considerable mass loss starting at 193 °C, resulting in degradation of the product. The thermal properties demonstrated a heat capacity of 2.45 J/g °C, a thermal conductivity of 0.164 ± 0.001 W/mK and a thermal diffusivity of 8.7x10-8 ± 0.000 m2/s.

Physical Properties of Fluoride Glasses for Ionics

2005 ◽  
Vol 480-481 ◽  
pp. 299-304 ◽  
Author(s):  
Viera Trnovcová ◽  
R.M. Zakalyukin ◽  
N.I. Sorokin ◽  
D. Ležal ◽  
P.P. Fedorov ◽  
...  
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Ionic Conductivity ◽  
Physical Properties ◽  
Crystallization Temperature ◽  
Glass Composition ◽  
Point Of View ◽  
Fluoride Glasses ◽  
Glass Compositions

The ionic conductivity and permittivity of glasses based on ZrF4, BaF2, LaF3, AlF3 and NaF (ZBLAN) or PbF2, InF3, BaF2, AlF3 and LaF3 (PIBAL) are studied. The influence of the glass composition on the glass transition temperature (Tg) and on the crystallization temperature (Tx) is reported. For all ZBLAN glasses the temperature dependencies of the ionic conductivity are close one to another (s500 = 8(2)·10-6 S/cm) and their conduction activation enthalpies are equal to 0.82(1)eV. From the point of view of the ionic conductivity, the best glass compositions are the PIBAL50 (50 m/o PbF2) and PIB45 ( 45 m/o PbF2).

Sorption isotherms, thermodynamic properties and glass transition temperature of mucilage extracted from chia seeds ( Salvia hispanica L.)

2015 ◽  
Vol 121 ◽  
pp. 411-419 ◽  
Author(s):  
Sandra Karina Velázquez-Gutiérrez ◽  
Ana Cristina Figueira ◽  
María Eva Rodríguez-Huezo ◽  
Angélica Román-Guerrero ◽  
Hector Carrillo-Navas ◽  
...  
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Thermodynamic Properties ◽  
Sorption Isotherms ◽  
Salvia Hispanica ◽  
Salvia Hispanica L
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