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- Title
Coagulation using organic carbonates opens up a sustainable route towards regenerated cellulose films.
- Authors
Nguyen, Mai N.; Kragl, Udo; Barke, Ingo; Lange, Regina; Lund, Henrik; Frank, Marcus; Springer, Armin; Aladin, Victoria; Corzilius, Björn; Hollmann, Dirk
- Abstract
Due to their biodegradability, biocompatibility and sustainable nature, regenerated cellulose (RC) films are of enormous relevance for green applications including medicinal, environmental and separation technologies. However, the processes used so far are very hazardous to the environment and health. Here, we disclose a simple, fast, environmentally friendly, nontoxic and cost-effective processing method for preparing RC films. High quality non-transparent and transparent RC films and powders can be produced by dissolution with tetrabutylphosphonium hydroxide [TBPH]/[TBP]+[OH]− followed by coagulation with organic carbonates. Investigations on the coagulation mechanism revealed an extremely fast reaction between the carbonates and the hydroxide ions. The high-quality powders and films were fully characterized with respect to structure, surface morphology, permeation and selectivity. This method represents a future-oriented green alternative to known industrial processes. Regenerated cellulose is a natural, renewable and biodegradable material but is commonly obtained via environmentally hazardous processes. Here, a simple, environmentally friendly route is presented involving rapid coagulation of dissolved cellulose by nontoxic organic carbonates.
- Subjects
CELLULOSE; CARBONATES; SURFACE morphology; BIODEGRADABLE materials; COST effectiveness
- Publication
Communications Chemistry, 2020, Vol 3, Issue 1, p1
- ISSN
2399-3669
- Publication type
Article
- DOI
10.1038/s42004-020-00360-7