Electrically conductive biocomposites based on poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and wood-derived carbon fillers

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F22%3A00559891" target="_blank" >RIV/61389013:_____/22:00559891 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/2504-477X/6/8/228" target="_blank" >https://www.mdpi.com/2504-477X/6/8/228</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/jcs6080228" target="_blank" >10.3390/jcs6080228</a>

Result language

angličtina

Original language name

Electrically conductive biocomposites based on poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and wood-derived carbon fillers

Original language description

In this paper, biobased carbons were used as fillers in poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV). The mechanical and electrical properties of these 100% biocomposites were analyzed. First, biocarbons were prepared from wood dust and cellulose fibers using carbonization temperatures ranging 900–2300 °C. XRD revealed significant improvements of the graphitic structure with increasing temperatures for both precursors, with slightly higher ordering in wood-dust-based carbons. An increase of the carbon content with continuous removal of other elements was observed with increasing temperature. The carbonized cellulose fiber showed an accumulation of Na and O on the fiber surface at a carbonization temperature of 1500 °C. Significant degradation of PHBV was observed when mixed with this specific filler, which can, most probably, be attributed to this exceptional surface chemistry. With any other fillers, the preparation of injection-molded PHBV composites was possible without any difficulties. Small improvements in the mechanical performance were observed, with carbonized fibers being slightly superior to the wood dust analogues. Improvements at higher filler content were observed. These effects were even more pronounced in the electrical conductivity. In the range of 15–20 vol.% carbonized fibers, the percolation threshold could be reached, resulting in an electrical conductivity of 0.7 S/cm. For comparison, polypropylene composites were prepared using cellulose fibers carbonized at 2000 °C. Due to longer fibers retained in the composites, percolation could be reached in the range of 5–10 vol.%. The electrical conductivity was even higher compared to that of composites using commercial carbon fibers, showing a great potential for carbonized cellulose fibers in electrical applications.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10404 - Polymer science

Project

<a href="/en/project/LTAUSA19066" target="_blank" >LTAUSA19066: A study of polymeric memristors based on methacrylate polymers with pendant carbazole moieties</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

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

Name of the periodical

Journal of Composites Science

ISSN

2504-477X

e-ISSN

—

Volume of the periodical

6

Issue of the periodical within the volume

8

Country of publishing house

CH - SWITZERLAND

Number of pages

16

Pages from-to

228

UT code for WoS article

000846514100001

EID of the result in the Scopus database

2-s2.0-85136838957