The crystalline polyamide phase in two representative poly(ether-block-amide) copolymers has been shown to be polymorphic in nature via an analysis by X-ray diffraction and solid-state ~3C nuclear magnetic resonance. In both polymers, this phase was found to adopt ~t and ;, structures analogous to those that exist in the corresponding polyamide homopolymers. Furthermore, it has been shown that phase transformation between crystal types is possible using chemical modifications
Посилання на статтю:
Phase modification and polymorphism in two poly(ether- block-amide) copolymers / Galen R. Hatfield*, Richard W. Bush, William E. Killinger andPaul M. Roubicek // Polymer. – 1994. – Vol 35. – P. 3943-3947.