Adsorption Studies of Amino Cellulose on Cellulosics. Issue 7 (4th April 2017)

• Record Type: Journal Article
• Authors: Jedvert, Kerstin; Elschner, Thomas; Heinze, Thomas
• Is Part Of: Macromolecular materials and engineering. Volume 302:Issue 7(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-04-04
• Subjects: 6‐deoxy‐6‐(2‐aminoethyl)amino cellulose -- adsorption -- pH‐dependence -- QCM‐D -- SPR; Plastics -- Periodicals; Polymers -- Periodicals; Polymerization -- Periodicals; 547.705
• DOI: 10.1002/mame.201700022
• Languages: English
• ISSNs: 1438-7492

Abstract

Abstract : Adsorption of amino cellulose onto cellulose surfaces is investigated and an unexpected pH‐dependence is found. The adsorption is consistently higher at a higher pH‐value of 10. The findings indicate that solubility and conformation of the amino celluloses are potentially highly important. Novel amino cellulose derivatives possess amazing properties, e.g., antimicrobial. This work is another step toward advanced, functionalized cellulosic materials. Abstract : Adsorption of a typical example of a new class of amino cellulose, namely 6‐deoxy‐6‐(2‐aminoethyl)amino cellulose at different pH‐values and in the presence of electrolytes, onto cellulose model substrates is studied with surface plasmon resonance and quartz crystal microbalance with dissipation monitoring. Unexpectedly, adsorption is consistently higher at a higher pH‐value of 10, indicating that solubility and interactions between amine moieties and cellulose are more important than electrostatic interactions. The findings are highly relevant for the process to modify material surfaces with amino cellulose in water‐based systems as a universal tool for changing the surface properties and chemistry. Potential applications for an antimicrobial all biobased material could be found, e.g., as medical textiles or in the biotechnology sector.