Wide angle X-ray diffraction has been used to investigate polymorphism in isotactic polypropylene (IPP) mouldings produced by conventional injection moulding and by shear controlled orientation injection moulding (SCORIM). y Phase was found to form in highly oriented IPP produced by SCORIM, with a marked enhancement of the preferred orientation of the ~ phase and percentage crystallinity when compared with conventionally moulded IPP.
Посилання на статтю:
y Phase in injection moulded isotactic polypropylene / GLirhan Kalay, Peter Allan and Michael J. Bevis // Polymer. – 1994. – Vol 35. – P. 2480-2482.