Full-text resources of CEJSH and other databases are now available in the new Library of Science.
Visit https://bibliotekanauki.pl

Results found: 1

first rewind previous Page / 1 next fast forward last

Search results

Search:
in the keywords:  polimery
help Sort By:

help Limit search:
first rewind previous Page / 1 next fast forward last
1
Publication available in full text mode
Content available

Wykorzystanie dyfraktometrii rentgenowskiej do badania morfologii polimerów stosowanych do produkcji geosyntetyków

100%
Bączek M., Ślusarczyk C.
Polish Journal of Materials and Environmental Engineering
|
2022
|
vol. 3(23)
10-20
EN
X-ray methods are very useful tools for the structural characterization of polymer systems. Considering the angular range in which X-ray scattering is registered, one can distinguish wide-angle (WAXS) and small-angle (SAXS) X-ray scattering techniques. WAXS method is most frequently used to characterize crystalline regions in semicrystalline polymers. By means of these method one can estimate the weight fraction of the crystalline regions (i.e. the degree of crystallinity), the mean sizes of crystallites and the orientation of crystallographic planes towards the chosen direction. WAXS can also be used to determination of polymorphism in polymers. Application of SAXS method to the investigation of two-phase polymer systems yields information about the long period of the lamellar structure, the thickness of crystalline regions in lamellar stacks and the thickness of the transition layer between crystalline and amorphous regions. For amorphous two-phase polymers SAXS permits determination of the correlation lenght which is connected with mean sizes one of the phase. In the case of fractal systems SAXS is used to estimate the fractal dimension. This paper will briefly discuss individual X-ray methods and present specific examples of their applications in the evaluation of the supermolecular structure of several selected types of fibers made of polymers used for the production of geosynthetics, i.e. polyester (PES) and polyacrylonitrile (PAN).
first rewind previous Page / 1 next fast forward last
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.