TY - JOUR
T1 - Ionic liquid induces flexibility and thermoplasticity in cellulose film
AU - Haq, Muhammad Abdul
AU - Habu, Yasuhiro
AU - Yamamoto, Kazuya
AU - Takada, Akihiko
AU - Kadokawa, Jun ichi
N1 - Funding Information:
This work was supported by Japanese Society for Promotion of Sciences ( FY2017 , P17347 ) and Iketani Science and Technology Foundation ( 0301018-A ).
Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/11/1
Y1 - 2019/11/1
N2 - It is still challenging to melt-process cellulose. In this paper, we proposed a method for the formation of thermally processable flexible cellulose films via gelation from its solution in ionic liquid (1-butyl-3-methylimidazolium chloride; BMIMCl). Cotton, as a source of cellulose, was dissolved (5 wt%) in BMIMCl and subsequently placed in different amounts of water. The obtained ion gels were dried at 60 °C for 24 h; during drying process, water was removed while BMIMCl was retained. It was found that the amount of retained BMIMCl had a critical role in determining the mechanical properties of the films. It was suspected that the processing conditions altered the degree of crystallinity of cellulose in the films as evidenced by X-ray diffraction measurement. The ionic liquid, i.e., BMIMCl induced the plasticity into the films, so that thermal processability to different shapes became possible.
AB - It is still challenging to melt-process cellulose. In this paper, we proposed a method for the formation of thermally processable flexible cellulose films via gelation from its solution in ionic liquid (1-butyl-3-methylimidazolium chloride; BMIMCl). Cotton, as a source of cellulose, was dissolved (5 wt%) in BMIMCl and subsequently placed in different amounts of water. The obtained ion gels were dried at 60 °C for 24 h; during drying process, water was removed while BMIMCl was retained. It was found that the amount of retained BMIMCl had a critical role in determining the mechanical properties of the films. It was suspected that the processing conditions altered the degree of crystallinity of cellulose in the films as evidenced by X-ray diffraction measurement. The ionic liquid, i.e., BMIMCl induced the plasticity into the films, so that thermal processability to different shapes became possible.
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U2 - 10.1016/j.carbpol.2019.115058
DO - 10.1016/j.carbpol.2019.115058
M3 - Article
C2 - 31426980
AN - SCOPUS:85068498150
SN - 0144-8617
VL - 223
JO - Carbohydrate Polymers
JF - Carbohydrate Polymers
M1 - 115058
ER -