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We report an infrared study of the deuteration of highly crystalline α- and β-chitin. With exposure to D 2 O vapor, the deuteration of α-chitin progressed on surface molecules, in contrast with β-chitin, which is partially deuterated on the inner part of the crystal. The intracrystalline deuteration occurred with high-temperature annealing in liquid D 2 O for α- and β-chitin. In α-chitin,...
Crystalline, orientated fibers of α-chitin were obtained from the tendons of a snow crab (Chionoecetes opilio). The elastic modulus of the crystalline region along the fiber axis (E l ) and the thermal expansion coefficients (TECs) of α-chitin were measured using synchrotron X-ray diffraction. The E l value of α-chitin was 59.3±11.3GPa, which was slightly larger than the value reported...
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