ICCAS OpenIR
Dynamic Self-Assembly Induced Rapid Dissolution of Cellulose at Low Temperatures
Cai, Jie1; Zhang, Lina1; Liu, Shilin1; Liu, Yating1; Xu, Xiaojuan1; Chen, Xuming2; Chu, Benjamin2; Guo, Xinglin3; Xu, Jian3; Cheng, He3; Han, Charles C.3; Kuga, Shigenori4
2008-12-09
Source PublicationMACROMOLECULES
ISSN0024-9297
Volume41Issue:23Pages:9345-9351
AbstractCellulose can be dissolved in precooled (-12 degrees C) 7 wt % NaOH-12 wt % urea aqueous solution within 2 min. This interesting process, to our knowledge, represents the most rapid dissolution of native cellulose. The results from (13)C NMR, (15)N NMR, (1)H NMR, FT-IR, small-angle neutron scattering (SANS), transmission electron microscopy (TEM), and wide-angle X-ray diffraction (WAXD) suggested that NaOH "hydrates" could be more easily attracted to cellulose chains through the formation of new hydrogen-bonded networks at low temperatures, while the urea hydrates could not be associated directly with cellulose. However, the urea hydrates could possibly be self-assembled at the surface of the NaOH hydrogen-bonded cellulose to form an inclusion complex (IC), leading to the dissolution of cellulose. Scattering experiments, including dynamic and static light scattering, indicated that most cellulose molecules, with limited amounts of aggregation, could exist as extended rigid chains in dilute solution. Further, the cellulose solution was relatively unstable and could be very sensitive to temperature, polymer concentration, and storage time, leading to additional aggregations. TEM images and WAXD provided experimental evidence on the formation of a wormlike cellulose IC being surrounded with urea. Therefore, we propose that the cellulose dissolution at - 12 degrees C could arise as a result of a fast dynamic self-assembly process among solvent small molecules (NaOH, urea, and water) and the cellulose macromolecules.
DOI10.1021/ma801110g
Indexed BySCI
Language英语
WOS IDWOS:000261335100056
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:236[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/64982
Collection中国科学院化学研究所
Corresponding AuthorZhang, Lina
Affiliation1.Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China
2.SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA
3.Chinese Acad Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China
4.Univ Tokyo, Grad Sch Agr & Life Sci, Tokyo, Japan
Recommended Citation
GB/T 7714
Cai, Jie,Zhang, Lina,Liu, Shilin,et al. Dynamic Self-Assembly Induced Rapid Dissolution of Cellulose at Low Temperatures[J]. MACROMOLECULES,2008,41(23):9345-9351.
APA Cai, Jie.,Zhang, Lina.,Liu, Shilin.,Liu, Yating.,Xu, Xiaojuan.,...&Kuga, Shigenori.(2008).Dynamic Self-Assembly Induced Rapid Dissolution of Cellulose at Low Temperatures.MACROMOLECULES,41(23),9345-9351.
MLA Cai, Jie,et al."Dynamic Self-Assembly Induced Rapid Dissolution of Cellulose at Low Temperatures".MACROMOLECULES 41.23(2008):9345-9351.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Cai, Jie]'s Articles
[Zhang, Lina]'s Articles
[Liu, Shilin]'s Articles
Baidu academic
Similar articles in Baidu academic
[Cai, Jie]'s Articles
[Zhang, Lina]'s Articles
[Liu, Shilin]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Cai, Jie]'s Articles
[Zhang, Lina]'s Articles
[Liu, Shilin]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.