维普资讯 http://www.cqvip.com
第22卷第3期 肖 青:CP/MAS”一NMR在研究二次纤维衰变机理中的应用 39 [12] Smith B G,Harris P J,Melton L D,et a1.Crystalline cellulose in hydrated primary cell walls of three monocotyledons and one dicot— yledon[J].Plant Cell Physiol,1998,39(7):711—720. [13] Heux L.Dinand E,Vignon M R.Structural aspects of ultrathin cellulose microifbrils followed by”C CP—MAS NMR[J].Carbohyd Polym,1999(40):115—124. [14] Duchesne I,Huh E L,Moll U,et a1.The influence of hemicellulose on fibril aggregation of kraft pulp fibres as revealed by FE—SEM and CP/MAS CNMR[J].Cellulose,2001,8(2):103—111. [15] son P T.Wickholm K,Iversen T.A CP/MAS”C NMR investigation of molecular ordering in celuloses[J].Carbohyd Res, 1997(302):19~25. [16] Yamamoto H,Horii F.CP/MAS”C NMR analysis of the transformation induced for Valonia cellulose by annealing at high tempera— tures[J].Macromolecules,1993(26):1313—1317, [17] At aIla R H.VanderHart D L。Studies of microsturcture of native celluloses using solid—state13 C NMR[J].Maeromolecules,1984, 17(8):1465—1472. [18] Newman R H.Estimation of the lateral dimensions of cellulose crystallizes usingl3 C NMR signal strengthsl J].Solid State Nuclear Magnetic Resonance,1999,15(1):21—29. [19] Clrak J A.Pulp technology and treatment for paper[M J.San Francisco:Miler Freeman Publication,2005:615. [20] Ioelovich M Y,Treimanis A,Klevinska V,et a1.Changes in cyrstalline structure of celulose during its separation from wood[J]. Khimiya Drevesiny,1989(5):10—13. [21] Nazhad M M,Paszner L.Fundamentals of strength loss in recycled paper[J].Tappi,1994,77(9):171—179. [22] Newman R H,Hemnfingson J A.Celulose cocrystallisation in horniifcation of kraft pulp[C].Montreal,Canada:ISWPC,1997. [23] Newman R H.Carbon~13 NMR evidence ofr cocyrstallizatiou of cellulose as a mechanism for horniifeation of bleached krfat pulp[JJ. Cellulose,2004(11):45—52. [24] Oksanen T.Buehea J,Viikari L.The role of hemicelluloses in the horniifeation of bleached kraft pulps[JJ.Holzforschung,1997 (51):355—360. E25] Hult E L,Larsson P T,Iversen T.Cellulose ifbril aggregation—an inherent property of krfat pulps[J].Polymer,2001(42):3309— 33l4. (责任编辑李亚青)