Thermal stability of cellulose nanocrystals prepared by succinic anhydride assisted hydrolysis
Authors:
- Agnieszka Leszczyńska,
- Paulina Radzik,
- Katarzyna Haraźna,
- Krzysztof Pielichowski
Abstract
A variety of techniques have recently been developed that enable manufacturing of cellulose nanomaterials with optimal properties for certain applications. Acid catalyzed hydrolysis is currently the most popular method for the synthesis of cellulose nanocrystals (CNCs). However, the type of acids and hydrolysis conditions influence the CNCs thermal stability which is crucial parameter in polymer composite technology. In this work thermally stable CNCs were prepared by two step method − (i) hydrolysis in phosphoric acid solutions to produce fine microcrystalline cellulose (MCC), (ii) followed by modification of MMC with succinic anhydride (SA). The method allowed manufacturing CNC-SA material that showed higher thermal stability than the reference cellulose material (UFC-raw) both in the inert gas and air atmosphere. The kinetic parameters of the thermal degradation process of produced cellulose materials were determined by Friedman and Ozawa-Flynn-Wall model-free methods and compared with CNCs prepared in sulfuric acid. On the basis of changes of apparent activation energy Ea a plausible mechanism of stabilization was discussed. The presented results showed the technological potential of organic acid anhydride application for manufacturing and thermal stabilization of CNCs.
- Record ID
- CUT73a461176ee44db7b8915989aba31860
- Publication categories
- ;
- Author
- Journal series
- Thermochimica Acta, ISSN 0040-6031, e-ISSN 1872-762X
- Issue year
- 2018
- Vol
- 663
- Pages
- 145-156
- Other elements of collation
- fot.; schem.; tab.; wykr.; Bibliografia (na s.) - 155-156; Bibliografia (liczba pozycji) - 58; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 663
- Keywords in English
- cellulose nanocrystals, whiskers, thermal stability, kinetics of degradation
- DOI
- DOI:10.1016/j.tca.2018.03.015 Opening in a new tab
- URL
- https://www.sciencedirect.com/science/article/pii/S0040603118300947 Opening in a new tab
- Related project
- Wpływ modyfikowanych nanokryształów celulozy na strukturę oraz właściwości termiczne i mechaniczne inżynierskich kompozytów poliamidowych z surowców odnawialnych. . Project leader at PK: , ,
Projects financed by NSC [Projekty finansowane przez NCN] - Language
- eng (en) English
- Score (nominal)
- 30
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT73a461176ee44db7b8915989aba31860/
- URN
urn:pkr-prod:CUT73a461176ee44db7b8915989aba31860
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.