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Babicka M, Woźniak M, Szentner K, Bartkowiak M, Peplińska B, Dwiecki K, Borysiak S, Ratajczak I. Nanocellulose Production Using Ionic Liquids with Enzymatic Pretreatment. MATERIALS (BASEL, SWITZERLAND) 2021; 14:3264. [PMID: 34204804 PMCID: PMC8231636 DOI: 10.3390/ma14123264] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 06/08/2021] [Accepted: 06/10/2021] [Indexed: 01/08/2023]
Abstract
Nanocellulose has gained increasing attention during the past decade, which is related to its unique properties and wide application. In this paper, nanocellulose samples were produced via hydrolysis with ionic liquids (1-ethyl-3-methylimidazole acetate (EmimOAc) and 1-allyl-3-methylimidazolium chloride (AmimCl)) from microcrystalline celluloses (Avicel and Whatman) subjected to enzymatic pretreatment. The obtained material was characterized using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), dynamic light scattering (DLS), scanning electron microscopy (SEM), and thermogravimetric analysis (TG). The results showed that the nanocellulose had a regular and spherical structure with diameters of 30-40 nm and exhibited lower crystallinity and thermal stability than the material obtained after hydrolysis with Trichoderma reesei enzymes. However, the enzyme-pretreated Avicel had a particle size of about 200 nm and a cellulose II structure. A two-step process involving enzyme pretreatment and hydrolysis with ionic liquids resulted in the production of nanocellulose. Moreover, the particle size of nanocellulose and its structure depend on the ionic liquid used.
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Affiliation(s)
- Marta Babicka
- Department of Chemistry, Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 75, 60625 Poznań, Poland; (M.B.); (M.W.); (K.S.)
| | - Magdalena Woźniak
- Department of Chemistry, Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 75, 60625 Poznań, Poland; (M.B.); (M.W.); (K.S.)
| | - Kinga Szentner
- Department of Chemistry, Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 75, 60625 Poznań, Poland; (M.B.); (M.W.); (K.S.)
| | - Monika Bartkowiak
- Department of Chemical Wood Technology, Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 38/42, 60627 Poznań, Poland;
| | - Barbara Peplińska
- NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61614 Poznań, Poland;
| | - Krzysztof Dwiecki
- Department of Food Biochemistry and Analysis, Faculty of Food Science and Nutrition, Poznań University of Life Sciences, Mazowiecka 48, 60623 Poznań, Poland;
| | - Sławomir Borysiak
- Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60965 Poznań, Poland;
| | - Izabela Ratajczak
- Department of Chemistry, Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 75, 60625 Poznań, Poland; (M.B.); (M.W.); (K.S.)
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