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Fabrication and characterization of polysaccharide ion gels with ionic liquids and their further conversion into value-added sustainable materials.

Takada A, Kadokawa J - Biomolecules (2015)

Bottom Line: The resulting ion gels have been characterized by suitable analytical measurements.Characterization of a pregel state by viscoelastic measurement provided the molecular weight information.Furthermore, the polysaccharide ion gels have been converted into value-added sustainable materials by appropriate procedures, such as exchange with other disperse media and regeneration.

View Article: PubMed Central - PubMed

Affiliation: Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga Koen 6-1, Kasuga, Fukuoka 816-8581, Japan. takada@mm.kyushu-u.ac.jp.

ABSTRACT
A review of the fabrication of polysaccharide ion gels with ionic liquids is presented. From various polysaccharides, the corresponding ion gels were fabricated through the dissolution with ionic liquids. As ionic liquids, in the most cases, 1-butyl-3-methylimidazolium chloride has been used, whereas 1-allyl-3methylimidazolium acetate was specifically used for chitin. The resulting ion gels have been characterized by suitable analytical measurements. Characterization of a pregel state by viscoelastic measurement provided the molecular weight information. Furthermore, the polysaccharide ion gels have been converted into value-added sustainable materials by appropriate procedures, such as exchange with other disperse media and regeneration.

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Procedure for fabrication of binary ion gels with BMIMCl.
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biomolecules-05-00244-f014: Procedure for fabrication of binary ion gels with BMIMCl.

Mentions: The preparation procedure for the cellulose ion gel with BMIMCl was extended to fabricate some binary gelling systems with the other polysaccharides (Figure 14). For example, when a solution of cellulose and potato starch (9.1 and 4.8 wt%, respectively) in BMIMCl, which was prepared by heating a mixture at 100 °C for 24 h, was left standing at room temperature for several days, a binary ion gel was fabricated with excluding excess BMIMCl [64]. The XRD profile of the resulting gel did not show the obvious diffraction peaks assignable to crystalline structures of cellulose and starch, suggesting that crystalline structures of the polysaccharides were mostly disrupted in the gel. The analytical data of the gel indicated to conceive the similar gelation process as that for the aforementioned cellulose ion gel with BMIMCl.


Fabrication and characterization of polysaccharide ion gels with ionic liquids and their further conversion into value-added sustainable materials.

Takada A, Kadokawa J - Biomolecules (2015)

Procedure for fabrication of binary ion gels with BMIMCl.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4384121&req=5

biomolecules-05-00244-f014: Procedure for fabrication of binary ion gels with BMIMCl.
Mentions: The preparation procedure for the cellulose ion gel with BMIMCl was extended to fabricate some binary gelling systems with the other polysaccharides (Figure 14). For example, when a solution of cellulose and potato starch (9.1 and 4.8 wt%, respectively) in BMIMCl, which was prepared by heating a mixture at 100 °C for 24 h, was left standing at room temperature for several days, a binary ion gel was fabricated with excluding excess BMIMCl [64]. The XRD profile of the resulting gel did not show the obvious diffraction peaks assignable to crystalline structures of cellulose and starch, suggesting that crystalline structures of the polysaccharides were mostly disrupted in the gel. The analytical data of the gel indicated to conceive the similar gelation process as that for the aforementioned cellulose ion gel with BMIMCl.

Bottom Line: The resulting ion gels have been characterized by suitable analytical measurements.Characterization of a pregel state by viscoelastic measurement provided the molecular weight information.Furthermore, the polysaccharide ion gels have been converted into value-added sustainable materials by appropriate procedures, such as exchange with other disperse media and regeneration.

View Article: PubMed Central - PubMed

Affiliation: Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga Koen 6-1, Kasuga, Fukuoka 816-8581, Japan. takada@mm.kyushu-u.ac.jp.

ABSTRACT
A review of the fabrication of polysaccharide ion gels with ionic liquids is presented. From various polysaccharides, the corresponding ion gels were fabricated through the dissolution with ionic liquids. As ionic liquids, in the most cases, 1-butyl-3-methylimidazolium chloride has been used, whereas 1-allyl-3methylimidazolium acetate was specifically used for chitin. The resulting ion gels have been characterized by suitable analytical measurements. Characterization of a pregel state by viscoelastic measurement provided the molecular weight information. Furthermore, the polysaccharide ion gels have been converted into value-added sustainable materials by appropriate procedures, such as exchange with other disperse media and regeneration.

Show MeSH