Positively and negatively charged xylan films

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Positively and negatively charged xylan films

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

Positively and negatively charged xylan films

Popis výsledku anglicky

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

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Carbohydrate Polymers

ISSN

0144-8617

e-ISSN

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Svazek periodika

83

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

769-775

Kód UT WoS článku

000285437000062

EID výsledku v databázi Scopus

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