Isotactic polypropylene nonisothermal crystallization

Finally, poly(a-PIN) was used in the nonisothermal crystallization of isotactic polypropylene from blends containing up to 30 per cent of this polyterpene [110-112]. [Pg.34]

Presence of TCL changes the properties of crystalline matrix. Transcrystallization of isotactic polypropylene in the presence of different fibers has been thoroughly analyzed. Gray as the first one provided detailed description of isotactic polypropylene behavior in the presence of wood fibers using polarized light microscopy. He observed that when melted polymer is cooled down, it crystallizes in spherulite forms in nonisothermal and isothermal conditions, creating additionally a TCL. [Pg.273]

Quan H, Li Z M, Yang M B and Lu Z Y (2005) Nonisothermal crystallization nucleation of in situ fibrillar and spherical inclusions in poly (phenylene sulfide)/isotactic polypropylene blends, J Macromol Sci Part B Phys 44 761-778. [Pg.562]

Lamellar habit is also known for crystallization from the melt under isothermal and nonisothermal conditions. Typical views of lamellae in isotactic polypropylene or isotactic sequences in elastomeric polypropylene are shown in Figure 6.15, also for comparison with data discussed in Chapter 3. The typical cross-hatched morphology with angles of 80° agrees well with the theoretically predicted and experimentally confirmed value [26]. Independent of the AFM mode (contact mode, intermittent contact mode, pulsed force mode) consistent observations were made. [Pg.109]