Exotherms are characterized by the presence of two crystallization peaks at 61-62 [degrees]C and 98 [degrees]C, whereas the endotherm
has only one broad melting peak at 110-111 [degrees]C.
However, HP-[beta]-CD exhibits a broad endotherm
in temperature of around 150[degrees]C and a sharp endotherm
in temperature of around 230[degrees]C.
9 contains a small endotherm
at 103[degrees]C and a small melt endotherm
at 235[degrees]C for the MEKO -blocked isocyanate, with an exotherm maximum at 258[degrees]C.
In figure 3b, the lower ethylene content copolymer exhibits a prominent melting peak at ~98[degrees]C, corresponding to primary crystallites, and a weak endotherm
at ~50[degrees]C, corresponding to secondary crystallites.
Another observation reported by Wissbrun, et al, is that the thermotropic nature of LCPs allows them to flow at temperatures below their DSC endotherm
The lowest temperature endotherm
(7)), which is located at temperature range ca.
In contrast to this, however, the energy of the crystalline melting endotherm
shows (as expected) the AR/DR pair to have the most crystallinity and the CR/FR pair to have the least.
3b) for individual polymers exhibit only one main peak, corresponding to their crystallization and melting points, respectively, excepting for sPP melting endotherm
which shows two peaks.
Annealing effects observable from DSC experiments are manifested as changes in the shape of the melting endotherm
, in location of the peak melting temperature, and in the area under the endotherm
More evidence of morpholine reactivity was seen in DSC analyses of silica-DTDM mixtures where a 10 [degrees] C shift in the melting endotherm
of the mixture - which did not occur in an HAF control - indicated a probable reaction (figure 6).
With ageing the melting endotherm
profile becomes longer and sharper; this suggests a narrower crystal size distribution [43-45].
However, rings in the bone suggest that Troodon stopped growing occasionally - more like an ectotherm than an endotherm