13C CPMAS NMR investigations of cellulose polymorphs in different pulps |
| |
| Authors: | Sirkka Maunu Tiina Liitiä Seppo Kauliomäki BO HORTLING JORMA SUNDQUIST |
| |
| Institution: | (1) Laboratory of Polymer Chemistry, University of Helsinki, P.O.Box 55, FIN-00014;(2) University of Helsinki, Finland;(3) Paper Science Centre, The Finnish Pulp and Paper Research Institute (KCL), P.O.Box 70, FIN-02151 Espoo, Finland |
| |
| Abstract: | In order to obtain information about the crystallinity and polymorphs of cellulose, and the occurrence of hemicelluloses in pulp fibers, wood cellulose, bacterial cellulose, cotton linters, viscose, and celluloses in different pulps were investigated by solid state 13C CPMAS NMR spectroscopy. A mixed softwood kraft pulp and a dissolving-grade pulp were treated under strongly alkaline and acidic conditions and the effect on cellulose crystallinity was studied. The presence of different crystalline polymorphs of cellulose and the amounts of hemicelluloses are considered. |
| |
| Keywords: | cellulose crystallinity polymorphs 13C CPMAS NMR parchmentising |
| 本文献已被 SpringerLink 等数据库收录！ |
|
