Coagulation using organic carbonates opens up a sustainable route towards regenerated cellulose films.

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

SUBMITTER: Nguyen MN 

PROVIDER: S-EPMC9814763 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature