Quaternized and sulfated xylan derivative films

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F14%3A00397368" target="_blank" >RIV/61389013:_____/14:00397368 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.carbpol.2013.08.075" target="_blank" >http://dx.doi.org/10.1016/j.carbpol.2013.08.075</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.carbpol.2013.08.075" target="_blank" >10.1016/j.carbpol.2013.08.075</a>

Result language
angličtina
Original language name
Quaternized and sulfated xylan derivative films
Original language description
Xylan quaternized sulfate films were prepared from beech xylan (X) and compared with fully sulfated xylan films (XS). When quaternized xylan (QX) was prepared in the first step (DSQ = 0.55), than by sulfation of QX in the second step the fully substituted ampholytic derivative (QXS; DSQ = 0.33; DSS = 1.67) could be obtained. By sulfation in first step, xylan sulphate (SX, DSS = 0.70) was obtained and by subsequent quaternization, SXQ film with DSQ = 0.55 and DSS = 0.33 which contained partially unsubstituted hydroxyls. The molar masses (Mn) of the film's soluble parts were increasing in order X < SX < SXQ < QX < XS < QXS. In all films there were some insoluble particles present as determined by the amount of recovered masses by SEC-MALS. The materialswere further characterized by AFM, XRD, TG/DTG/DTA, NMR and mechanical testing. QXS and SXQ could form mechanically more stable films than XS specimens.
Czech name
—
Czech description
—

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JI - Composite materials
OECD FORD branch
—

Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)