Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Roland Adden"'
Autor:
Peter W. Schmidt, Roland Adden, Svetlana Morozova, Paige M. Owens, Frank S. Bates, Timothy P. Lodge, Yongfu Li
Publikováno v:
Macromolecules
Gelation of aqueous methylcellulose (MC) solutions upon heating has been shown to result from the formation of a network of semiflexible fibrils, with diameters of 15 ± 2 nm. Here, we investigate the impact of MC molecular weight on the elasticity a
Publikováno v:
Macromolecular Chemistry and Physics. 214:1363-1374
Hydroxyethylmethyl celluloses (MSHE 0.15–0.26, DSMe 1.49–1.82) and hydroxyethyl celluloses (MSHE 1.89–3.03) are analyzed with respect to their substituent distribution in the polymer chains. The cellulose ethers are peralkylated and partially h
Publikováno v:
Food Hydrocolloids. 29:317-325
Rheological properties of aqueous solutions of a novel methyl cellulose has been compared to the performance of a conventional methyl cellulose. Gel formation of these materials is trigged only by increased temperatures. The low gelation temperature
Publikováno v:
Cellulose. 19:993-1004
The alditol acetate method is a common procedure for sugar analysis, also applied to determine the substituent distribution in monomer units of polysaccharide ethers like methyl cellulose by gas liquid chromatography. Consisting of several preparatio
Autor:
Roland Adden, Petra Mischnick, Juergen Engelhardt, Claes Melander, Matthias Knarr, Gunnar Brinkmalm
Publikováno v:
Macromolecular Symposia. 280:36-44
Six methyl cellulose (MC) samples, one with a IDS Of 1.32 and five with a DS between 1.83 and 1.88, were degraded with five different enzymes or enzyme preparations containing endoglucanases. The main goal was to investigate whether enzymes could be
Autor:
Roland Adden, Petra Mischnick
Publikováno v:
Macromolecular Symposia. 262:1-7
A set of methyl celluloses of DS 1.8 has been fractionated by stepwise solvent extraction. All fractions have been investigated with respect to their monomer composition and methyl distribution in the polymer chains. Deviation from the random model a
Publikováno v:
Macromolecular Chemistry and Physics. 207:954-965
A set of four MCs (DS 1.80-1.95) has been analyzed with regard to their substituent pattern in the glucosyl units and along the polymer chain. The average heterogeneity of methylation observed for the entire material was analyzed in more detail after
Publikováno v:
Biomacromolecules. 7:1410-1421
In this part of our studies, dealing with new approaches to the analysis of enzymatically hydrolyzed methyl cellulose, five different enzymes or enzyme preparations containing endoglucanases (from Bacillus agaradhaerens Cel 5A, Trichoderma reesei, Tr
Publikováno v:
Cellulose. 13:459-476
Three hydroxypropylmethyl celluloses (HPMC 1, 2, 3; DSMe=2.06, 1.99, 2.04; MSHP=0.21, 0.19, 0.21) have been analyzed with respect to their methyl and hydroxypropyl pattern in the glucosyl units and along the polymer chain. The determination of the me