Spectroscopic studies on the temperature-dependent molecular arrangements in hybrid chitosan/1,3-β-D-glucan polymeric matrices

• Published in: International journal of biological macromolecules Vol. 159; pp. 911 - 921
• Main Authors: Gieroba, Barbara, Sroka-Bartnicka, Anna, Kazimierczak, Paulina, Kalisz, Grzegorz, Lewalska-Graczyk, Agnieszka, Vivcharenko, Vladyslav, Nowakowski, Robert, Pieta, Izabela S., Przekora, Agata
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 15.09.2020
• Subjects: Atomic force microscopy; ATR FT-IR spectroscopy; beta-Glucans - chemistry; Biomaterials; Chitosan - chemistry; Microscopy, Atomic Force; Molecular Structure; Polymers - chemistry; Polysaccharide matrix; Raman spectroscopy; Spectroscopy, Fourier Transform Infrared; Spectrum Analysis; Spectrum Analysis, Raman; Temperature; X-ray photoelectron spectroscopy; Atomic force microscopy; ATR FT-IR spectroscopy; Raman spectroscopy; X-ray photoelectron spectroscopy; Polysaccharide matrix; Biomaterials
• ISSN: 0141-8130; 1879-0003
• DOI: 10.1016/j.ijbiomac.2020.05.155

Chitosan/1,3-β-D-glucan matrices have been recently used in various biomedical applications. Within this study, the structural changes in hybrid polysaccharide chitosan/1,3-β-D-glucan matrices cross-linked at 70 °C and 80 °C were detected with Attenuated Total Reflection Fourier Transform Infrared spectroscopy (ATR FT-IR) and Raman spectroscopy enabled thorough insights into molecular structure of studied biomaterials, whereas X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM) provided their surface characteristics with confirmation of their effective and non-destructive properties. There are temperature-dependent differences in the chemical interactions between 1,3-β-D-glucan units and N-glucosamine in chitosan, resulting in surface polarity changes. The second order derivatives and deconvolution revealed the alterations in the secondary structure of studied matrices, along with different sized grain-like structures revealed by AFM. Since surface physicochemical properties of biomaterials have great impact on cell behavior, abovementioned techniques may allow to optimize and modify the preparation of polymeric matrices with desired features. [Display omitted] •Different temperatures were used in cross-linking of chitosan/1,3-β-D-glucan matrices.•The formation of the hybrid chitosan/1,3-β-D-glucan system has been proven.•Scaffold matrix surface was investigated with FT-IR, Raman spectroscopy, XPS and AFM.