High-resolution solid-state carbon-13 NMR study of chitosan and its salts with acids: conformational characterization of polymorphs and helical structures as viewed from the conformation-dependent carbon-13 chemical shifts
1987 ◽
Vol 20
(10)
◽
pp. 2424-2430
◽
Hajime Saito
◽
Ryoko Tabeta
◽
Kozo Ogawa