Chemical modification of nanocellulose with canola oil fatty acid methyl ester

Carbohydrate Polymers
Liqing WeiNicole M Stark

Abstract

Cellulose nanocrystals (CNCs), produced from dissolving wood pulp, were chemically functionalized by transesterification with canola oil fatty acid methyl ester (CME). CME performs as both the reaction reagent and solvent. Transesterified CNC (CNCFE) was characterized for their chemical structure, morphology, crystalline structure, thermal stability, and hydrophobicity. Analysis by Fourier transform infrared (FTIR) and FT-Raman spectroscopies showed that the long chain hydrocarbon structure was successfully grafted onto CNC surfaces. After transesterification the crystal size and crystallinity of nanocrystals were not changed as determined by Raman spectroscopy and wide angle X-ray diffraction (XRD). CNCFE showed higher thermal stability and smaller particle size than unmodified CNCs. Water contact angle measurement indicated the CNCFE surface has significantly higher hydrophobicity than unmodified CNCs. The transesterified CNCs could be potentially used as hydrophobic coatings and reinforcing agents to hydrophobic polymer for nanocomposites.

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Citations

Apr 17, 2018·Chemical Society Reviews·E Johan FosterJeff Youngblood
Sep 10, 2020·Advanced Materials·Xianpeng YangHiroyuki Yano
May 1, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Umesh P Agarwal
Oct 15, 2019·Human & Experimental Toxicology·C A OtuechereI A Ebigwei
May 22, 2020·Frontiers in Chemistry·Djalal TracheM Hazwan Hussin
Jan 1, 2020·Carbohydrate Polymers·Mahdi RahimiHossein Samadi Kafil
Oct 20, 2020·International Journal of Biological Macromolecules·A G SouzaD S Rosa
Jun 17, 2021·Chemical Record : an Official Publication of the Chemical Society of Japan ... [et Al.]·Syed Shaheen ShahMd Abdul Aziz
Jul 3, 2021·Materials·Katarzyna UramJoanna Ryszkowska
Jul 21, 2021·Environmental Science & Technology·Benjamin P FrankD Howard Fairbrother

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