The Polymeric Materials Encyclopedia presents state-of-the-art research and development
on the synthesis, properties, and applications of polymeric materials. This groundbreaking …

Isotactic polypropylene (IPP) was the first and is still the most important type of stereoregular
polymer [1-3]. IPP is a semicrystalline polymer; its high tendency to crystallization is due to …

The growth rate of isotactic polypropylene is deduced from microscopic observations during
isothermal crystallizations. A change in the growth regime is observed at 138‡ C and …

The effect of crystallinity on the fracture behaviour of polypropylene was studied under
impact conditions. The crystallinity was varied by taking low-and high-isotactic …

The year 2000 challenges plastic producers to prepare polymers that:(1) originate from
unique, easily-recyclable base-materials,(2) cover a large application-property range, and …

Isotactic polypropylene bars were exposed to ultraviolet radiation (UV) in the laboratory for
periods up to 48 weeks causing a reduction in molecular size and the build-up of chemical …

Five isotactic polypropylenes, produced by different polymerization processes and with
different heterogeneous catalyst systems, were fractionated according to stereoregularity …

Studies of the temperature dependence of spherulitic growth rates, in the context of the
Lauritzen− Hoffman secondary nucleation theory, and investigations of the crystallization …

The effect of both a thermoplastic elastomer (EPDM) and short aramid fibres on
polypropylene (PP) crystallization kinetics and tensile behaviour has been investigated. The …

1. INTRODUCTION The prediction of polymer crystallization behavior at a reasonable
semiquantitative level of accuracy is important in assessing processability and performance …