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Medientyp:
E-Artikel
Titel:
Fractionation and Analysis of an Impact Poly(propylene) Copolymer by TREF and SEC‐FTIR
Beteiligte:
de Goede, Elana;
Mallon, Peter;
Pasch, Harald
Erschienen:
Wiley, 2010
Erschienen in:
Macromolecular Materials and Engineering, 295 (2010) 4, Seite 366-373
Sprache:
Englisch
DOI:
10.1002/mame.200900336
ISSN:
1438-7492;
1439-2054
Entstehung:
Anmerkungen:
Beschreibung:
AbstractTREF fractionation was combined with SEC‐FTIR analysis to measure the compositional heterogeneity within a commercial impact PP copolymer. The chemical composition of all fractions was determined as function of their molecular weight distribution. This approach proved to be highly successful at identifying different constituents within fractions exhibiting bimodal molecular weight distributions. Furthermore, the determination of ethylene and propylene crystallinity distribution across the molecular weight distribution confirmed the morphological nature of each of the components of the bimodal distribution. It is demonstrated that the combination of TREF and SEC‐FTIR provides a simple alternative to more time‐consuming conventional ways of characterising impact PP copolymers of complex heterogeneity.magnified image