Towards Tailored Dialdehyde Cellulose Derivatives: A Strategy for Tuning the Glass Transition Temperature

Jonas Simon, Inge Schlapp-Hackl, Janak Sapkota, Matti Ristolainen, Thomas Rosenau*, Antje Potthast*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The derivatization of dialdehyde cellulose (DAC) has received increasing attention in the development of sustainable thermoplastics. In this study, a series of dialcohol celluloses were generated by borohydride reduction, which exhibited glass transition temperature (Tg) values ranging from 23 to 109 °C, depending on the initial degree of oxidation (DO) of the DAC intermediate. However, the DAC derivatives did not exhibit thermoplastic behavior when the DO of the modified DAC was below 26 %. The influence of introduced side chains was highlighted by comparing DAC-based thermoplastic materials obtained by either oximation or borohydride reduction. Our results provide insights into the generation of DAC-based thermoplastics and highlight a strategy for tailoring the Tg by adjusting the DO during the periodate oxidation step and selecting appropriate substituents in subsequent modifications.

Original languageEnglish
Article numbere202300791
JournalChemSusChem
DOIs
Publication statusE-pub ahead of print - 17 Nov 2023
MoE publication typeA1 Journal article-refereed

Keywords

  • glass transition temperature
  • material science
  • periodate oxidation
  • renewable resources
  • thermoplastic polymers

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