Polyaniline cryogels supported with poly(vinyl alcohol): soft and conducting

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F17%3A00471010" target="_blank" >RIV/61389013:_____/17:00471010 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/17:10367411

Výsledek na webu

<a href="http://dx.doi.org/10.1021/acs.macromol.6b02526" target="_blank" >http://dx.doi.org/10.1021/acs.macromol.6b02526</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.macromol.6b02526" target="_blank" >10.1021/acs.macromol.6b02526</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Polyaniline cryogels supported with poly(vinyl alcohol): soft and conducting

Popis výsledku v původním jazyce

The present contribution reports the single-step preparation of new type of soft macroporous conducting cryogels, a special type of hydrogels. Polyaniline/poly(vinyl alcohol) cryogel was prepared by the oxidation of aniline hydrochloride in frozen reaction mixtures, in ice, containing a supporting polymer, poly(vinyl alcohol). The cryogel used for illustration contained of polyaniline, poly(vinyl alcohol) and 93 wt % of aqueous phase. It was macroscopically homogeneous and it had macroporous structure with average pore size of approximate to 100 mu m. The conducting polyaniline phase was fibrillary. The molecular structure of polyaniline was confirmed by Raman spectroscopy. The conductivity of cryogel was 0.004 S cm(-1) in water and 0.105 S cm(-1) in 0.1 M sulfuric acid. It still increased to 0.29 S cm(-1) when the content of monomer increased five times. Because of the contribution of electronic transport, the conductivity of cryogel was always higher than the ionic conductivity of aqueous phase used for its penetration. The conductivity of freeze-dried cryogel was 0.003 S cm(-1). Viscoelastic and mechanical properties, controlled mainly by the conducting polymer phase, have been assessed and demonstrated good mechanical integrity and feasibility of potential applications.

Název v anglickém jazyce

Polyaniline cryogels supported with poly(vinyl alcohol): soft and conducting

Popis výsledku anglicky

The present contribution reports the single-step preparation of new type of soft macroporous conducting cryogels, a special type of hydrogels. Polyaniline/poly(vinyl alcohol) cryogel was prepared by the oxidation of aniline hydrochloride in frozen reaction mixtures, in ice, containing a supporting polymer, poly(vinyl alcohol). The cryogel used for illustration contained of polyaniline, poly(vinyl alcohol) and 93 wt % of aqueous phase. It was macroscopically homogeneous and it had macroporous structure with average pore size of approximate to 100 mu m. The conducting polyaniline phase was fibrillary. The molecular structure of polyaniline was confirmed by Raman spectroscopy. The conductivity of cryogel was 0.004 S cm(-1) in water and 0.105 S cm(-1) in 0.1 M sulfuric acid. It still increased to 0.29 S cm(-1) when the content of monomer increased five times. Because of the contribution of electronic transport, the conductivity of cryogel was always higher than the ionic conductivity of aqueous phase used for its penetration. The conductivity of freeze-dried cryogel was 0.003 S cm(-1). Viscoelastic and mechanical properties, controlled mainly by the conducting polymer phase, have been assessed and demonstrated good mechanical integrity and feasibility of potential applications.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

<a href="/cs/project/GA16-02787S" target="_blank" >GA16-02787S: Vodivé polymerní kryogely</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Macromolecules

ISSN

0024-9297

e-ISSN

—

Svazek periodika

50

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

972-978

Kód UT WoS článku

000394410200028

EID výsledku v databázi Scopus

2-s2.0-85012916478