Qualitative differences in the calculated THz absorption spectra of linear and branched polymers as exemplifed in amylose and amylopectin. (May 2020)

• Record Type: Journal Article
• Authors: Semenova, A V; Vaks, V L; Guseva, Yu S; Babarina, D A; Morunova, S S; Vilkov, A S
• Is Part Of: Journal of physics. Volume 1537(2020)
• Publication Date: 2020-05
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1537/1/012020
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: Qualitative absorption spectra of the amylose and the amylopectin molecules were calculated in the THz frequency range within the framework of a simple model of coupled oscillators. The simulations revealed that the absorption of the linear molecule (amylose) was approximately twice as strong as that of the branched molecule (amylopectin) with the same molecular weight. The differences in the fine structure of the obtained spectra were also described. The results can be used to determine the degree of polymer branching using THz spectroscopy.