6Andersson S, Sefimaa R, Paakkari T, et al. Crystallinity of wood and the size of cellulose crystallites in Norway spruce ( Picea abies) [J]. Journal of Wood Science,2003,49(6) :531-537.
7Lee C L. Crystallinity of wood cellulose fibers studies by X-ray methods[ J ]. Forest Products Journal, 1961,11 : 108- 1 12.
8Ahtee M, Hattula T, Mangs J, et al. An X-ray diffraction meth- od for determination of crystallinity in wood pulp [ J ]. Paperi Ja Puu, 1988,8:475-480.
9Newman R H, Hemmingson J A. Determination of tb.e degree of crytallinity of crystallinity of cellulose in wood by carbon-13 NMR spectroscopy [ J]. Holzforschung, 1990,44:351-355.
10Wolcott M P, Yin S, Rials T G. Using dynamic mechanical spec- troscopy to monitor the crystallization of PP/MAPP blends in the oresence of wood[J]. Composite Interface.2000.7( 1 ):3-12.