Positively and negatively charged xylan films

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F11%3A43891601" target="_blank" >RIV/60461373:22310/11:43891601 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Positively and negatively charged xylan films
Original language description
Xylan was 2-hydroxypropylsulfonated and/or 2-hydroxypropylquaternized for film application All the products were water soluble with molar masses of the derivatives between M(n) of 3 8 and 948 9 kg/mol with polydispersity index D from 1 7 to 268 At the range from 100 to 250 mu m of thickness the material developed reproducible mechanical properties When mixed solutions of quaternized and sulfonated samples were used for film preparation they disrupted although their thickness was 234+/-18 mu m as determined by SEM The thermal and thermo-oxidative stability of the mixed derivative increased in comparison to unmodified xylan film as determined by TG and DTA analysis The measured tensile strength values were the best on quaternized films (64 3 MPa) while the Young s modulus values were higher on hydroxypropylsulfonated xylan film (3350 MPa) The mixed derivative gave values close to average between the two derivatives and according to SEM observation also the smoothest surface on the fractu
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CD - Macromolecular chemistry
OECD FORD branch
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Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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