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© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

In this study, cellulose acetate (CA)/cellulose nanofibril (CNF) film was prepared via solvent casting. CNF was used as reinforcement to increase tensile properties of CA film. CNF ratio was varied into 3, 5, and 10 phr (parts per hundred rubbers). Triacetin (TA) and triethyl citrate (TC) were used as two different eco-friendly plasticizers. Two different types of solvent, which are acetone and N-methyl-2-pyrrolidone (NMP), were also used. CA/CNF film was prepared by mixing CA and CNF in acetone or NMP with 10% concentration and stirred for 24 h. Then, the solution was cast in a polytetrafluoroethylene (PTFE) dish followed by solvent evaporation for 12 h at room temperature for acetone and 24 h at 80 °C in an oven dryer for NMP. The effect of solvent type, plasticizers type, and CNF amount on film properties was studied. Good dispersion in NMP was evident from the morphological study of fractured surface and visible light transmittance. The results showed that CNF has a better dispersion in NMP which leads to a significant increase in tensile strength and elastic modulus up to 38% and 65%, respectively, compared with those of neat CA. CNF addition up to 5 phr loading increased the mechanical properties of the film composites.

Details

Title
Preparation and Characterization of Cellulose Acetate Film Reinforced with Cellulose Nanofibril
Author
Cindradewi, Azelia Wulan 1 ; Bandi, Rajkumar 2   VIAFID ORCID Logo  ; Chan-Woo, Park 2   VIAFID ORCID Logo  ; Ji-Soo, Park 3 ; Lee, Eun-Ah 1 ; Jeong-Ki, Kim 1 ; Gu-Joong Kwon 4 ; Song-Yi, Han 2 ; Lee, Seung-Hwan 5   VIAFID ORCID Logo 

1  Department of Forest Biomaterials Engineering, Kangwon National University, Chuncheon 24341, Korea; [email protected] (A.W.C.); [email protected] (J.-S.P.); [email protected] (E.-A.L.); [email protected] (J.-K.K.) 
2  Institute of Forest Science, Kangwon National University, Chuncheon 24341, Korea; [email protected] (R.B.); [email protected] (C.-W.P.); [email protected] (G.-J.K.); [email protected] (S.-Y.H.) 
3  Department of Forest Biomaterials Engineering, Kangwon National University, Chuncheon 24341, Korea; [email protected] (A.W.C.); [email protected] (J.-S.P.); [email protected] (E.-A.L.); [email protected] (J.-K.K.); National Institute of Forest Science, Seoul 02455, Korea 
4  Institute of Forest Science, Kangwon National University, Chuncheon 24341, Korea; [email protected] (R.B.); [email protected] (C.-W.P.); [email protected] (G.-J.K.); [email protected] (S.-Y.H.); Kangwon Institute of Inclusive Technology, Kangwon National University, Chuncheon 24341, Korea 
5  Department of Forest Biomaterials Engineering, Kangwon National University, Chuncheon 24341, Korea; [email protected] (A.W.C.); [email protected] (J.-S.P.); [email protected] (E.-A.L.); [email protected] (J.-K.K.); Institute of Forest Science, Kangwon National University, Chuncheon 24341, Korea; [email protected] (R.B.); [email protected] (C.-W.P.); [email protected] (G.-J.K.); [email protected] (S.-Y.H.) 
First page
2990
Publication year
2021
Publication date
2021
Publisher
MDPI AG
e-ISSN
20734360
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.3390/polym13172990
ProQuest document ID
2571466103
Copyright
© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.