As pointed out in the previous paper, the retention time at a certain temperature is important because of stability of each crystal form
The crystal form
of LCBPP crystallization samples was characterized on a wide-angle X-ray diffraction (WAXD, D/max-2550VB/PC, Rigaku Corp., Japan).
For most minerals, a range of figures is presented, beginning with figures showing a minimum of crystal forms
(usually only one) and ending with figures which combine all of the observed forms.
A less common form is the beta crystal form
, which produces improved impact strength and ductility but lower tensile yield strength.
Irgacure 1300, a mixed crystal form
of Irgacure 369 and Irgacure 651, provides a cost-effective photoinitiator system, which combines fast cure response in dark colors with good solubility in acrylates and reduced odor on UV exposure.
Many fats and waxes crystallise in a crystal form
we call beta-prime.
The resulting structure was very similar to that of crystal form
They have been able to observe differences in crystal form
, distribution, and amount, as well as in the crystallization process itself.
With the crystal form
available, Crennell exposed the structure to X rays.
Internal chemical zoning within the carrollite crystals commonly has led to the preferential replacement of their interior portions, whereas the thin outer portions of those crystals may remain as unreplaced remnants that exhibit isometric crystal form
. Many partially replaced carrollite crystals, however, exhibit interior unreplaced remnants that are spheroidal.
In this phase, up to 2.0% carbon can be held (or dissolved) in the austenite solution at the end of solidifaction (compared with 0.025% dissolved in the room temperature crystal form