| Project/Area Number |
62470096
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
高分子物性
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| Research Institution | Osaka University |
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Principal Investigator |
TAKAHASHI Yasuhiro Japan Osaka University Fuculty of Science assistant Professor, 理学部, 講師 (10028194)
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| Project Period (FY) |
1987 – 1988
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| Project Status |
Completed (Fiscal Year 1988)
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| Budget Amount *help |
¥6,500,000 (Direct Cost: ¥6,500,000)
Fiscal Year 1988: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1987: ¥5,600,000 (Direct Cost: ¥5,600,000)
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| Keywords | X-ray Crystal Structure Analysis / Crystal Structure / Statistical Structure / Disorder / Cellulose / Silk / Konjak Glucomannan / HVJ / Sendai Virus / セルロース / シゾフィラン |
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| Research Abstract |
1. Crystal structure of native cellulose X-ray crystal structure analysis was carried out by using ramie cellulose. Integrated intensities of 50 independent reflections could be estimated by a drum scanner. The finally obtained structure gives R = 16.9 % in which the up- and down-molecules statistically occupied two crystal sites with almost equal probabilityin a unit cell with parameters A = 8.34 A, B = 7.91 A, C(fiber identity period) = 10.37 A, = 97.6^o and the space group P2<@21<@D2. The structure, refined by using the intensity data measured for valonia cellulose by gardner ＆ blackwell, gave the ratio of 0.7 to 0.3 for the probability of up- and down-molecules.
2. Crystal structure of silk X-ray crystal structure analysis results in the statistical structure
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