Highly conducting and biocompatible polypyrrole/poly(vinyl alcohol) cryogels

0504158 - ÚMCH 2020 RIV CH eng J - Journal Article
Bober, Patrycja - Capáková, Z. - Acharya, Udit - Zasońska, Beata Anna - Humpolíček, P. - Hodan, Jiří - Hromádková, Jiřina - Stejskal, Jaroslav
Highly conducting and biocompatible polypyrrole/poly(vinyl alcohol) cryogels.
Synthetic Metals. Roč. 252, June (2019), s. 122-126. ISSN 0379-6779. E-ISSN 0379-6779
R&D Projects: GA ČR(CZ) GA17-05095S
Institutional support: RVO:61389013
Keywords : polypyrrole * cryogel * conductivity
OECD category: Polymer science
Impact factor: 3.286, year: 2019
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S0379677919301936?via%3Dihub

Conducting macroporous soft cryogels were prepared by the oxidation of pyrrole within the frozen aqueous solutions of 5–8 wt.% poly(vinyl alcohol) at −24 °C. Mechanical properties of cryogels were independent of poly(vinyl alcohol) concentration, Young moduli were ≈20 kPa. The conductivity of compressed freeze-dried composites reached 18 S cm−1 thus exceeding the conductivity of polypyrrole alone. This level of conductivity was also preserved after long-term treatment with water, i.e. close to physiological conditions. In-vitro determined cytotoxicity demonstrated high potential applications due to low cytotoxicity. Moreover, compared to the steel based materials, the cryogels mimic the properties of soft tissues. All these properties are a prerequisite for the utilization in biomedical applications.
Permanent Link: http://hdl.handle.net/11104/0296292