With Reference To The Provided Dsc Trace For A Polymer Select All Correct Statements From The Options Below In Terms O 1 (33.8 KiB) Viewed 14 times
With reference to the provided DSC trace for a polymer, select all correct statements from the options below, in terms of: (a) The names for the transitions and features A, B, and C. (b) The correct expressions describing the exothermic/endothermic nature of these temperatures and features. B Exo A C heat flow Endo
A = Glass Transition Temperature, B = Melting Temperature, C = Crystallisation Temperature A = Glass Transition Temperature, B = Crystallisation Temperature, C = Melting Temperature A = Glass Transition Temperature, B = Gelation Temperature, C = Melting Temperature A = Gelation Temperature, B = Melting Temperature, C = Crystallisation Temperature The Glass Transition Temperature is endothermic as the polymers absorb energy becoming more mobile. The Glass Transition Temperature is exothermic as the polymers absorb energy becoming more mobile. Crystallisation is exothermic because the polymer chains move into an ordered state and bonds form. At the melting temperature the chains absorb heat and begin to move around freely.
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