NDLI: Stoichiometry and stability of cellulose-hydrazine complexes

Content Provider	Springer Nature Link
Author	Su, Xiaobo Kimura, Satoshi Wada, Masahisa Kuga, Shigeri
Copyright Year	2011
Abstract	Highly crystalline cellulose samples from green algae (cellulose I) and mercerized ramie (cellulose II) were treated with anhydrous hydrazine and the resulting complexes were analyzed by synchrotron X-ray diffraction and thermogravimetry. Cellulose I-hydrazine complex could be fully described by a two-chain monoclinic unit cell, a = 0.879 nm, b = 1.076 nm, c = 1.038 nm, and γ = 122.0°, with space group P21. Cellulose II-hydrazine complex prepared from mercerized ramie gave a different two-chain monoclinic unit cell, a = 1.042 nm, b = 1.046 nm, c = 1.038 nm, γ = 129.7°, also with space group P21. Though having different crystal structures, the number of hydrazine molecules per glucopyranoside residue was 0.82 for cellulose I-complex and 0.93 for cellulose II-complex, probable stoichiometric value of 1.0. Hydrazine could be extracted from the complexes by organic solvents retaining the crystalline orders, resulting in the allomorphic conversion to cellulose IIII and cellulose IIIII, both having non-staggered chain arrangements. These features are similar to those of cellulose-ethylenediamine complexes.
Starting Page	531
Ending Page	537
Page Count	7
File Format	PDF
ISSN	09690239
Journal	Cellulose
Volume Number	18
Issue Number	3
e-ISSN	1572882X
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-02-05
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cellulose-hydrazine complex Stoichiometry Synchrotron X-ray diffraction Thermogravimetry Mercerization Bioorganic Chemistry Polymer Sciences Organic Chemistry Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Polymers and Plastics

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