Quaternized and sulfated xylan derivative films

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Quaternized and sulfated xylan derivative films

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Quaternized and sulfated xylan derivative films

Popis výsledku anglicky

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.

Druh

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

CEP obor

JI - Kompositní materiály

OECD FORD obor

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Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

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

99

Číslo periodika v rámci svazku

2 January

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

356-364

Kód UT WoS článku

000329256600046

EID výsledku v databázi Scopus

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