Now showing items 1-5 of 5
Polypropylene/filler nanocomposites by melt compounding and in situ polymerization
(Stellenbosch : University of Stellenbosch, 2010-12)
ENGLISH ABSTRACT: The properties of polymer nanocomposites depend greatly on the chemistry of the polymer matrices, the nature of the nanofillers, and the way in which they are prepared. Understanding the synthesis–str ...
The effect of in-process ethylene incorporation on the evolution of particle morphology and molecular characteristics of commercial heterophasic ethylene propylene copolymers (HEPCs)
(Stellenbosch : Stellenbosch University, 2014-04)
ENGLISH ABSTRACT: Impact copolymers or heterophasic polypropylene-ethylene-co-propylene copolymers (HEPCs) commonly produced in industry are valued for their good mechanical properties, combining the rigidity of the ...
The effect of molecular architecture on the properties of propylene impact copolymers
(Stellenbosch : University of Stellenbosch, 2010-03)
ENGLISH ABSTRACT: Impact polypropylene copolymers (IPPC) are important commercial materials, but their morphology and molecular architecture are not yet fully understood. In this study the focus was on selectively removing ...
Molecular weight effects on crystallization of polypropylene
(Stellenbosch : University of Stellenbosch, 2011-03)
ENGLISH ABSTRACT: The crystallization of polyolefins is an important parameter in determining the properties of such materials. The crystallization phenomenon generally depends on the molecular symmetry (tacticity) and ...
Novel multidimensional fractionation techniques for the compositional analysis of impact polypropylene copolymers
(Stellenbosch : Stellenbosch University, 2013-03)
ENGLISH ABSTRACT: Impact Polypropylene Copolymers (IPCs) are extremely complex materials, consisting of a mixture of polypropylene homopolymer and copolymers having different comonomer (ethylene) contents and chemical ...