The deformation behavior of semicrystalline polymers associated with polymorphic transformations under tensile deformation is discussed in the case of syndiotactic polypropylene. We report a phase diagram of this polymer where the regions of stability of the different polymorphic forms are defined as a function of the degree of stereoregularity and deformation. The values of critical strain corresponding to the structural transformations depend on the stereoregularity that affects the relative stability of the involved polymorphic forms and the state of the entangled amorphous phase.
A microscopic insight into the deformation behavior of semicrystalline polymers: the role of phase transitions / DE ROSA, Claudio; Auriemma, Finizia; RUIZ DE BALLESTEROS, Odda. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 96:(2006), pp. 167801-1-167801-4. [10.1103/PhysRevLett.96.167801]
A microscopic insight into the deformation behavior of semicrystalline polymers: the role of phase transitions
DE ROSA, CLAUDIO;AURIEMMA, FINIZIA;RUIZ DE BALLESTEROS, ODDA
2006
Abstract
The deformation behavior of semicrystalline polymers associated with polymorphic transformations under tensile deformation is discussed in the case of syndiotactic polypropylene. We report a phase diagram of this polymer where the regions of stability of the different polymorphic forms are defined as a function of the degree of stereoregularity and deformation. The values of critical strain corresponding to the structural transformations depend on the stereoregularity that affects the relative stability of the involved polymorphic forms and the state of the entangled amorphous phase.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
