Abstract:
:Crystal conversion of beta-chitin to alpha-chitin by aq. NaOH treatment was studied for a highly crystalline beta-chitin sample from diatom spine. The minimum NaOH concentration to cause swelling was between 25% and 30% w/w. The alkali-swollen material was poorly crystalline and was regenerated as alpha-chitin on washing with water. This conversion caused total collapse of the original microfibrillar morphology. These features are similar to those of 7 N-8 N HCl treatment reported earlier, but alkali treatment was free from depolymerization or deacetylation.
journal_name
Biomacromoleculesjournal_title
Biomacromoleculesauthors
Noishiki Y,Takami H,Nishiyama Y,Wada M,Okada S,Kuga Sdoi
10.1021/bm0257513keywords:
subject
Has Abstractpub_date
2003-07-01 00:00:00pages
896-9issue
4eissn
1525-7797issn
1526-4602journal_volume
4pub_type
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