Crystallization of cis-l,4-polyisoprene (PIP) in blends with atactic poly(vinylethylene) (PVE) is found to be accompanied by entrapment of the amorphous PVE within the crystalline lattice. As determined from wide angle X-ray diffraction measurements, this entrapment causes an expansion of the PIP unit cell. Such mixing within the crystalline phase is usually associated with chain isomorphism, whereby structurally similar blend components cocrystallize. In the present case, the amorphous PVE is literally entrapped as a defect in the crystal. This is in addition to its interlamellar entrapment observed in an earlier study.
Посилання на статтю:
Lattice expansion during polyisoprene crystallization from blends / D. W. Tomlin and C. M. Roland // Polymer. – 1993. – Vol 34. – P. 2665-2667.