Xylan sulphate films

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F11%3A43891599" target="_blank" >RIV/60461373:22310/11:43891599 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Xylan sulphate films

Popis výsledku v původním jazyce

Xylan sulphate derivatives with degree of substitution (DS) up to 1.40 at 90% yield for film applications were prepared. The structure and substitution were confirmed by 2D NMR spectroscopy and elemental analysis. The highest DS was obtained by sulphation with sulphur trioxide pyridine complex in N,N-dimethylformamide (DMF) when the least degradative conditions were used. The samples at high DS did not form a compact film. The best mechanical properties of xylan sulphate film were achieved on the partially water soluble derivate with DS 0.07 when sulphated in dimethylsulfoxide (DMSO). It was observed that partially soluble films with low DS and high molar mass of soluble component exhibited better mechanical properties than films with higher DS and lowmolar mass. This could be explained by adhesion of insoluble components with solubilized xylan sulphate. This was supported also by the shapes of images of samples observed by scanning electron microscopy (SEM). The thermal and thermo-ox

Název v anglickém jazyce

Xylan sulphate films

Popis výsledku anglicky

Xylan sulphate derivatives with degree of substitution (DS) up to 1.40 at 90% yield for film applications were prepared. The structure and substitution were confirmed by 2D NMR spectroscopy and elemental analysis. The highest DS was obtained by sulphation with sulphur trioxide pyridine complex in N,N-dimethylformamide (DMF) when the least degradative conditions were used. The samples at high DS did not form a compact film. The best mechanical properties of xylan sulphate film were achieved on the partially water soluble derivate with DS 0.07 when sulphated in dimethylsulfoxide (DMSO). It was observed that partially soluble films with low DS and high molar mass of soluble component exhibited better mechanical properties than films with higher DS and lowmolar mass. This could be explained by adhesion of insoluble components with solubilized xylan sulphate. This was supported also by the shapes of images of samples observed by scanning electron microscopy (SEM). The thermal and thermo-ox

Druh

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

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

—

Projekt

—

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

—

Svazek periodika

86

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

5

Strana od-do

214-218

Kód UT WoS článku

000293114900028

EID výsledku v databázi Scopus

—