Influence of a novel laboratory endoglucanase on the reactivity and accessibility of dissolving pulp
2008 (English)In: ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2008Conference paper (Refereed)
Cellulose is the most abundant biorenewable material, constitutes an important polymer since it is used as raw material for several products, e.g. cellulose derivs. which have many important applications in the fiber, paper, membrane, polymer, and paints industries. A raw material with high cellulose content is required for the prodn. of cellulose derivs., e.g. cotton and dissolving pulp are used. Cellulose forms a network structure of fibrils and fibrilar aggregations. Intermol. hydrogen bonds, dipole interactions, and van der Waals interactions bind the cellulose mols. intensively together. The accessibility and reactivity of the cellulose in wood pulps to solvents and reactive agents is usually limited. In this respect, different types of pre-treatments have been assayed to increase the reactivity of cellulose, among them the use of enzymes such as monocomponent cellulases and cellulase mixt. In this work, was investigated the influence of a novel lab. enzyme, from Paenibacillus sp. Strain BP-23, on a com. dissolving pulp from Eucalyptus globulus, in terms of enzyme dosage and incubation time. Evaluation of these parameters in terms of accessibility and reactivity, according to Fockxs method, were investigated. Structural characterization and mol. wt. distribution were carried out using 13C-CP/MAS NMR (Cross-Polarisation Magic Angle Spinning Carbon-13 Nuclear Magnetic Resonanse) and SEC (Size Exclusion Chromatog.), resp.
Place, publisher, year, edition, pages
, Abstracts of papers of the american chemical society, ISSN 0065-7727
Polymer Technologies Polymer Chemistry
IdentifiersURN: urn:nbn:se:kth:diva-80532ISI: 000271775101379OAI: oai:DiVA.org:kth-80532DiVA: diva2:498163
235th ACS National Meeting, New Orleans, LA, United States, April 6-10, 2008