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Natural rubber composites using hydrothermally carbonized hardwood waste biomass as a partial reinforcing filler-Part II: mechanical, thermal and ageing (chemical) properties
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SYSNO ASEP 0573543 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Natural rubber composites using hydrothermally carbonized hardwood waste biomass as a partial reinforcing filler-Part II: mechanical, thermal and ageing (chemical) properties Tvůrce(i) Lubura, J. (RS)
Kočková, Olga (UMCH-V) RID, ORCID
Strachota, Beata (UMCH-V) RID
Bera, O. (RS)
Pavlova, Ewa (UMCH-V) RID
Pavličević, J. (RS)
Ikonić, B. (RS)
Kojić, P. (RS)
Strachota, Adam (UMCH-V) RID, ORCIDČíslo článku 2397 Zdroj.dok. Polymers. - : MDPI
Roč. 15, č. 10 (2023)Poč.str. 30 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova natural rubber composites ; bio-sourced raw materials ; hydrochar Vědní obor RIV CD - Makromolekulární chemie Obor OECD Polymer science CEP TN02000020 GA TA ČR - Technologická agentura ČR Způsob publikování Open access Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000996878300001 EID SCOPUS 85149695345 DOI 10.3390/polym15102397 Anotace Natural rubber composites were reinforced by the co-fillers ‘hydrochar’ (HC), obtained by hydrothermal carbonization of hardwood sawdust and commercial carbon black (CB). The content of the combined fillers was kept constant while their ratio was varied. The aim was to test the suitability of HC as a partial filler in natural rubber. Due to its larger particle size and hence smaller specific surface area, large amounts of HC reduced the crosslinking density in the composites. On the other hand, due to its unsaturated organic character, HC was found to display interesting chemical effects: if it was used as the exclusive filler component, it displayed a very strong anti-oxidizing effect, which greatly stabilized the rubber composite against oxidative crosslinking (and hence embrittlement). HC also affected the vulcanization kinetics in different ways, depending on the HC/CB ratio. Composites with HC/CB ratios 20/30 and 10/40 displayed interesting chemical stabilization in combination with fairly good mechanical properties. The performed analyses included vulcanization kinetics, tensile properties, determination of density of permanent and reversible crosslinking in dry and swollen states, chemical stability tests including TGA, thermo-oxidative aging tests in air at 180 °C, simulated weathering in real use conditions (‘Florida test’), and thermo-mechanical analyses of degraded samples. Generally, the results indicate that HC could be a promising filler material due to its specific reactivity. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2024 Elektronická adresa https://www.mdpi.com/2073-4360/15/10/2397
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