## Abstract Isothermal radial growth rates (__G__) of isotactic polypropylene (iPP) spherulites in immiscible blends with a polyethylene based ionomer (1) partially neutralized with Zn^+2^, (2) completely acidified, and (3) completely esterified have been determined at crystallization temperatures
Spherulite growth rates in binary polymer blends
โ Scribed by Maria Laura Di Lorenzo
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- English
- Weight
- 610 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0079-6700
No coin nor oath required. For personal study only.
โฆ Synopsis
This contribution provides an overview of the current state of art of spherulite growth rate in binary polymer blends. A detailed analysis of the various factors that contribute to increase or decrease the growth rate of spherulites is reported and supported by several examples. The reported results are discussed mainly with regard to miscibility of the components. Below the melting point, blends containing crystallizable polymers are heterogeneous systems, as the components separate from each other during solidification. However, miscibility within the remaining amorphous phase may still be possible and the homogeneity or heterogeneity of the amorphous phase affects the crystallization process.
๐ SIMILAR VOLUMES
An analytical model for the isothermal crystallization of fiber reinforced polymers is presented. The model is based on approximate expressions for the volume of intersection between a sphere and cylinder. These expressions are used to account for the effect of the fibers on the overall crystallizat
Particle coarsening was investigated in polymer blends containing a minor phase volume of 23% produced by compositional quenching. The scaling exponents for three binary blends (polystyrene/polybutadiene, polystyrene/polyisoprene, and polystyrene/S-B random copolymer) were in reasonable agreement wi