Affordable Access

Crystalline morphology ofβ-nucleated controlled-rheology polypropylene

Authors
Journal
Polymer Testing
0142-9418
Publisher
Elsevier
Publication Date
Volume
27
Issue
5
Identifiers
DOI: 10.1016/j.polymertesting.2008.04.004
Keywords
  • Controlled Rheology
  • Polypropylene (Pp)
  • β-Nucleating Agent (β-Na)
  • Crystalline Morphology

Abstract

Abstract A series of controlled-rheology polypropylenes (CRPPs) were prepared through reactive extrusion of polypropylene (PP) and dicumyl peroxide (DCP). Differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXD) were used to evaluate the ability of three different kinds of nucleating agents (NAs), E3B, WBG-II, and TMB-5, to induce β-crystals in the CRPPs. The results indicate that TMB-5 shows the best nucleation effect and can induce the highest relative content of β-crystals. For the effect of DCP content on the β-crystal of CRPP, it was found that with 0.3 wt% TMB-5 incorporated, the critical DCP content emerged at 0.1 wt%. For the effect of NA content on the β-crystal of CRPPs, the total β-crystallinity index and relative β-crystal content were found to reach a maximum value at a content of 0.5 wt% β-NA, with a 0.1 wt% DCP content incorporated.

There are no comments yet on this publication. Be the first to share your thoughts.