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Röhrl, Maximilian ; Ködel, Justus F. ; Timmins, Renee ; Callsen, Christoph ; Aksit, Merve ; Fink, Michael F. ; Seibt, Sebastian ; Weidinger, Andy ; Battagliarin, Glauco ; Ruckdäschel, Holger ; Schobert, Rainer ; Breu, Josef ; Biersack, Bernhard:
New Functional Polymer Materials via Click Chemistry-Based Modification of Cellulose Acetate.
In: ACS Omega.
Bd. 8
(2023)
Heft 11
.
- S. 9889-9895.
ISSN 2470-1343
DOI: https://doi.org/10.1021/acsomega.2c06811
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Angaben zu Projekten
| Projekttitel: |
Offizieller Projekttitel Projekt-ID SFB 840: Von partikulären Nanosystemen zur Mesotechnologie 79971943 SFB 1357: MIKROPLASTIK – Gesetzmäßigkeiten der Bildung, des Transports, des physikalisch-chemischen Verhaltens sowie der biologischen Effekte: Von Modell- zu komplexen Systemen als Grundlage neuer Lösungsansätze 391977956 Open Access Publizieren Ohne Angabe |
|---|---|
| Projektfinanzierung: |
Deutsche Forschungsgemeinschaft |
Abstract
Cellulose acetate (CA) was partially acrylated, and the resulting cellulose acetate acrylate (acryl-substitution degree of 0.2) underwent quantitative thio-Michael click reactions with various thiols. A toolbox of functional CA polymers was obtained in this way, and their properties were studied. The modification with fatty alkyl thiols led to hydrophobic materials with large water drop contact angles. Octadecylthio-, butoxycarbonylpropylthio-, and furanylthio-modifications formed highly transparent materials. The new derivative CAASFur disintegrated completely under industrial composting conditions. Films of modified CA polymers were cast and investigated in terms of barrier properties. The nanocomposite of CAAS18 compounded with a synthetic layered silicate (hectorite) of a large aspect ratio showed permeabilities as low as 0.09 g mm m–2 day–1 for water vapor and 0.16 cm3 mm m–2 day–1 atm–1 for oxygen. This portfolio of functional CA polymers opens the door to new applications.