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Imaging and quantifying the different crystalline structures of polypropylene with the atomic force microscope
(Stellenbosch : University of Stellenbosch, 2006-03)
Isotactic polypropylene (iPP) exists in four different crystalline phases: α-, β-, γ- and the mesomorphic (smectic) form. The α-phase is probably the most predominant form of iPP with a monoclinic unit cell, whereas the ...
Localisation and quantification of chemical functional groups on pulp fibres
(Stellenbosch : University of Stellenbosch, 2010-12)
ENGLISH ABSTRACT: The distribution of different free chemical functional groups on wood and pulp fibres was determined by means of atomic force microscopy (AFM) with chemically modified tips. Because these functional ...