caa a22 4500 37888722X CHVBK 20180305123445.0 cr unu---uuuuu 161128e20040205xx s 000 0 eng 10.1515/HF.2004.012 doi (NATIONALLICENCE)gruyter-10.1515/HF.2004.012 Newman R. H. Homogeneity in cellulose crystallinity between samples of Pinus radiata wood [Elektronische Daten] [R. H. Newman] Wood was sampled from 22 locations in 3 Pinus radiata trees and characterized by solid-state 13C NMR spectroscopy. Values of a cellulose crystallinity index were confined to the range 0.486 to 0.541 despite inclusion of earlywood and latewood, compression wood and opposite wood, juvenile wood and mature wood. The mean value was 0.515 and the standard deviation was 0.015. Highest crystallinity was associated with relatively slow radial growth, with a correlation coefficient of R=−0.79 for a linear least-squares fit against ring width. The NMR results were consistent with published studies based on X-ray peak widths. Crystallinity indices based on X-ray peak heights or areas have shown wider ranges of variation, attributed to differences in cellulose content rather than cellulose crystallinity. Copyright © 2004 by Walter de Gruyter GmbH & Co. KG Timber & wood processing nationallicence Biotechnology nationallicence Materials science nationallicence Holzforschung Walter de Gruyter 58/1(2004-02-05), 91-96 0018-3830 58:1<91 2004 58 hfsg https://doi.org/10.1515/HF.2004.012 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1515/HF.2004.012 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Newman R. H. NATIONALLICENCE 773 0- Holzforschung Walter de Gruyter 58/1(2004-02-05), 91-96 0018-3830 58:1<91 2004 58 hfsg CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter