Implications of Global and Local Mobility in Amorphous Excipients as Determined by DSC and TM DSC | Zendy

Ion Dranca | Zendy; Tudor Lupaşcu | Zendy

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Implications of Global and Local Mobility in Amorphous Excipients as Determined by DSC and TM DSC

Author(s) -

Ion Dranca,

Tudor Lupaşcu

Publication year - 2009

Publication title -

chemistry journal of moldova

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.275

H-Index - 5

eISSN - 2345-1688

pISSN - 1857-1727

DOI - 10.19261/cjm.2009.04(2).02

Subject(s) - differential scanning calorimetry , amorphous solid , chemistry , annealing (glass) , heat capacity , glass transition , calorimetry , analytical chemistry (journal) , materials science , crystallography , polymer , thermodynamics , chromatography , organic chemistry , composite material , physics

The paper explores the use of differential scanning calorimetry (DSC) and temperature modulated differential scanning calorimetry (TM DSC) to study α- and β- processes in amorphous sucrose and trehalose. The real part of the complex heat capacity is evaluated at the frequencies, f, from 5 to 20mHz. β-relaxations were studied by annealing glassy samples at different temperatures and subsequently heating at different rates in a differential scanning calorimeter.

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