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Antioxidant and antibacterial effects of natural phenolic compounds on green composite materials
Instituto de Tecnología de Materiales (ITM), Universitat Politècnica de València (UPV), Alcoy (Alicante), Spain.
Textile Research Institute (AITEX), Alcoy (Alicante), Spain.
Textile Research Institute (AITEX), Alcoy (Alicante), Spain.ORCID iD: 0000-0002-0252-337X
Instituto de Tecnología de Materiales (ITM), Universitat Politècnica de València (UPV), Alcoy (Alicante), Spain.
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2012 (English)In: Polymer Composites, ISSN 0272-8397, E-ISSN 1548-0569, Vol. 33, no 8, p. 1288-1294Article in journal (Refereed) Published
Abstract [en]

The aim of this study is to establish the thermal performance of a biocomposite (Arbofill kokos®), stabilized with different natural phenolic additives, to check the antioxidant capacity of the resulting compounds. Different phenolic compounds (thymol, carvacrol, α-tocopherol, and tannic acid) were used as biobased additives and the concentrations ranged between 0.5 wt% and 2 wt%. The results obtained were compared with formulations containing a typical industrial petroleum-based antioxidant agent (octadecyl-3-(3,5-di-tert- butyl-4-hydroxyphenyl) propionate). Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) were used to characterize the antioxidant performance of the selected natural additives. The antimicrobial effect of these natural phenolic compounds was also studied by analyzing the growth of bacterial colonies. The comparison between the natural phenolic compounds and the petroleum-based antioxidant compound showed good antioxidant action for natural phenolic compounds; in all the mixtures of biocomposite and antioxidant agent the oxidation onset temperature (OOT) increased in a remarkable way, but the highest stabilization effect was achieved with α-tocopherol with provides a % increase on OOT of about 45%. With regard to antibacterial activity of the different natural phenolic compounds, thymol, and carvacrol showed interesting antibacterial properties against Staphylococcus aureus. Copyright © 2012 Society of Plastics Engineers.

Place, publisher, year, edition, pages
2012. Vol. 33, no 8, p. 1288-1294
Keywords [en]
Anti-bacterial activity, Anti-microbial effects, Antibacterial effects, Antibacterial properties, Antioxidant action, Antioxidant capacity, Antioxidant compounds, Bacterial colonies, Biobased, Biocomposite, Natural additives, Oxidation onset temperature, Phenolic compounds, Stabilization effects, Staphylococcus aureus, Tannic acid, Thermal Performance, Bacteria, Composite materials, Differential scanning calorimetry, Thermogravimetric analysis, Phenols
National Category
Polymer Technologies
Identifiers
URN: urn:nbn:se:his:diva-15889DOI: 10.1002/pc.22254ISI: 000306359800004Scopus ID: 2-s2.0-84863985989OAI: oai:DiVA.org:his-15889DiVA, id: diva2:1229305
Available from: 2018-06-29 Created: 2018-06-29 Last updated: 2019-02-12Bibliographically approved

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Moriana, Rosana

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