Molecular Orientation Distribution of Regenerated Cellulose Fibers Investigated with Polarized Raman Spectroscopy
Artikel i vetenskaplig tidskrift, 2019

The molecular orientation distribution of polymeric fibers influences physical properties. We present a novel method of analyzing polarized Raman experiments to determine molecular orientation, which is based on exchanging the Legendre polynomial approach with a wrapped Lorentzian function, as determined from a prescreening of X-ray scattering patterns. This method removes the need for performing right angle scattering experiments while avoiding common approximations. The molecular orientation of regenerated cellulose fibers, using the presented method, is shown to correlate well with X-ray scattering and an analogous experiment using solid-state NMR spectroscopy. Challenges of quantitatively measuring molecular anisotropy occur with semi-crystalline, partially modified, or composite materials. As such, a plethora of techniques, each with a unique chemical selectivity, is paramount for material characterization.

Författare

Leo Svenningsson

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Lars Nordstierna Group

Yuan-Chih Lin

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi 2

Maths Karlsson

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi 2

Anna Martinelli

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Anna Martinelli Group

Lars Nordstierna

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Lars Nordstierna Group

Macromolecules

00249297 (ISSN) 15205835 (eISSN)

Vol. 52 10 3918-3924

Ämneskategorier

Fysikalisk kemi

Polymerteknologi

Annan kemi

DOI

10.1021/acs.macromol.9b00520

Mer information

Senast uppdaterat

2019-07-15