Cellulose modified to host functionalities via facile cation exchange approach
Artikel i vetenskaplig tidskrift, 2024

Properties of cellulose are typically functionalized by organic chemistry means. We progress an alternative facile way to functionalize cellulose by functional group counter-cation exchange. While ion-exchange is established for cellulose, it is far from exploited and understood beyond the most common cation, sodium. We build on our work that established the cation exchange for go-to alkali metal cations. We expand and further demonstrate the introduction of functional cations, namely, lanthanides. We show that cellulose nanocrystals (CNCs) carrying sulfate-half ester groups can acquire properties through the counter-cation exchange. Trivalent lanthanide cations europium (Eu3+), dysprosium (Dy3+) and gadolinium (Gd3+) were employed. The respective ions showed distinct differences in their ability of being coordinated by the sulfate groups; with Eu3+fully saturating the sulfate groups while for Gd3+ and Dy3+, values of 82 and 41 % were determined by compositional analysis. CNCs functionalized with Eu3+ displayed red emission, those containing Dy3+ exhibited no optical functionality, while those with Gd3+revealed significantly altered magnetic relaxation times. Using cation exchange to alter cellulose properties in various ways is a tremendous opportunity for modification of the abundant cellulose raw materials for a renewable future.

Rheology

Lanthanides

Luminescence

Författare

Panagiotis Spiliopoulos

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Saül Llacer Navarro

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Eliott Orzan

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Reza Ghanbari

Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial

Rudolf Pietschnig

Universität Kassel

Clemens Stilianu

Technische Universität Graz

Stefan Spirk

Technische Universität Graz

Andreas Schaefer

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Roland Kádár

Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial

Tiina Nypelö

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Carbohydrate Polymers

0144-8617 (ISSN)

Vol. 332 121857

Ämneskategorier

Polymerkemi

Oorganisk kemi

Materialkemi

Annan materialteknik

Organisk kemi

Fusion, plasma och rymdfysik

Styrkeområden

Nanovetenskap och nanoteknik

Materialvetenskap

Infrastruktur

Chalmers materialanalyslaboratorium

DOI

10.1016/j.carbpol.2024.121857

Mer information

Senast uppdaterat

2024-04-02