w]) or the presence of a small concentration of very long chains in enhancing changes in shear-induced crystallization is well documented for non-nucleated
polymers (38-45), but little is known about nucleated
Marlex HNZ-02, a 2-MFR nucleated
grade, looks promising as an alternative to random copolymers for 4-oz to 1-qt single-serve food containers.
PEIT copolymers are more effective above 120[degrees]C.
The relative [beta]-phase contents of PP and PP nucleated
by different nucleating agents obtained from the different zones of injection-molded bars are shown in Table 1.
Both the flexural strength and modulus decrease with increasing elastomer content, with the values for the nucleated
blends always superior to those of the corresponding non-nucleated
Figure 3a showed the relative crystallinity as a function of crystallization temperature for the virgin iPP and the nucleated
iPP with DHAA-K.
The difference between the crystallization temperature of a pure and nucleated
iPP, estimated as [DELTA]T = [T.
Isothermal crystallization was carried out in the sample pan of a Perkin-Elmer-2C Calorimeter with ~ 10 mg of patch cutting from nucleated
The neat isotactic polypropylene and filled and nucleated
polypropylenes were extruded at 200[degrees]C through a 1.
In the present work, the crystallization kinetics of a virgin and a nucleated
PA66 grades is studied, in isothermal and non-isothermal conditions and at atmospheric and high pressure.
To prevent cell coalescence and deterioration of the nucleated
cell density, one of these extrusion processes utilizes staged pressure drops to elimInate premature cell growth and maintain sufficiently small cell sizes (1, 3).
30] studied the isothermal and non-isothermal crystallization behavior of iPP nucleated
by [alpha]/[beta]-CNAs Zhao et al.