Biocatalytic Yarn for Peroxide Decomposition with Controlled Liquid Transport. Issue 7 (16th February 2021)

• Record Type: Journal Article
• Authors: Yuan, Yue; Zhang, Yuxuan; Bilheux, Hassina; Salmon, Sonja
• Is Part Of: Advanced materials interfaces. Volume 8:Issue 7(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-02-16
• Subjects: biocatalytic yarn -- constrained liquid transport -- enzyme immobilization -- flexible flow‐through reactors -- textile; Materials science -- Periodicals; 620.11
• DOI: 10.1002/admi.202002104
• Languages: English
• ISSNs: 2196-7350

Abstract

Abstract: A robust biocatalytic yarn with controllable liquid transport properties is created by coating thin layers of chitosan containing catalase onto a cellulosic yarn. The resulting material integrates enzyme catalytic functionality with protective coating properties of chitosan and structural functionality of the textile. Mild immobilization conditions and good affinity between the two polysaccharides minimize enzyme inactivation during the preparation steps and prevent enzyme from leaching during peroxide decomposition testing and washing, providing a novel and versatile enzyme immobilization strategy. The catalytic efficiency of enzymes in a reaction containing solid, liquid, and gas phases is facilitated when dissolved enzyme substrate is transported by liquid flowing through the coated textile structure. The flow‐through configuration decomposes at least two times more peroxide in a twenty‐times smaller reaction zone volume compared to a stirred tank configuration. Liquid transport through the yarn and liquid spatial distribution within the yarn are investigated by in situ neutron radiography and neutron computed tomography, revealing a constrained wicking mechanism that benefits biocatalytic yarn performance. This new class of sustainable and flexible biocatalytic textile matrices has beneficial multifunctional properties, not previously described, that are applicable for numerous small‐ and large‐scale applications including controlled flow reactors and reactive filtration. Abstract : A multifunctional biocatalytic yarn is developed by coating a thin chitosan layer with entrapped catalase onto cellulosic fibers, yielding a flexible reactive pipe with improved enzyme longevity. Water distribution inside the yarn characterized by neutron computed tomography reveals a mechanism where at least two times more peroxide decomposes in a 20‐times smaller reaction zone volume by this flow‐through configuration.