Abstract:
:Natural cellulose molecules have a strong tendency of being aggregated into larger structures. Thus, the imaging of isolated individual cellulose molecules is hampered for a long time. In this work, we manage to observe, for the first time, the isolated individual natural cellulose chains on a sample surface by means of atomic force microscope. The advantage of the ionic liquid, in which natural cellulose can be molecularly dispersed, is considered to be the key point for the successful imaging. Moreover, we find that the surface charge can influence the morphology of the single cellulose chains upon adsorption. That is, on the positively charged surface, individual cellulose chains adopt an extended conformation; whereas on the negatively charged surface, a compact globule conformation is observed.
journal_name
Biopolymersjournal_title
Biopolymersauthors
Wan Z,Li L,Cui Sdoi
10.1002/bip.21070subject
Has Abstractpub_date
2008-12-01 00:00:00pages
1170-3issue
12eissn
0006-3525issn
1097-0282journal_volume
89pub_type
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