bioplastics-2016_posters-accepted-abstracts

21 / 26

Page 77
Bioplastics 2016
November 10-11, 2016
Volume 7 Issue 6(Suppl) J Bioremediat Biodegrad
ISSN: 2155-6199 JBRBD, an open access journal
conferenceseries .com
November 10-11, 2016 Alicante, Spain
International Conference onSustainable Bioplastics
J Bioremediat Biodegrad 2016, 7:6(Suppl)
Highly efficient and versatile photoinduced thiol-ene crosslinking to prepare antibacterial and
antioxidant materials derived terpenes
Estelle Renard
Universite Paris Est, France
Bio-based networks derived from eugenol were prepared with an eco-friendly process by photoactivated thiol-ene reactions.
Allyl derivative eugenol, prepared by a nucleophilic substitution was combined with linalool, a monoterpene present in
the lavender essential oil, well known for its antibacterial activity, with eugenol, or carvacrol, sustainable antioxidant molecule
components of the essential oil of clove and oil of thyme, respectively. The photoactivated thiol-ene reaction is a quick room
temperature straightforward way to obtain renewable cross-linked networks. Several systems have been developed including,
covalent grafting of linalool, eugenol, or inclusion of carvacrol moieties to obtain functional materials. Two bacteria strains
were used in vitro to evaluate the resistance to bacterial adhesion and the DPPHmethod was used to determine the antioxidant
properties of the networks. As expected, the results showed a strong anti-adhesion activity against S. aureus and E. coli due
to the presence of eugenol moieties and carvacrol release. Moreover, the phenol groups of grafted eugenol or free carvacrol
provide an antioxidant activity characterized by a radical scavenging activity higher than 90%.
Thermal characterization of vegetable tannin reinforced TPU-based bio-composites
Hüseyin Ata Karavana, Fatma Erdoan, Arife Candaş Adiguzel Zengin, Onur Yilmaz and Fatma Akpolat
Ege University, Turkey
The aim of this study was to investigate the use of vegetable tannin as a potential reinforcement material in polymer
composites for the production of footwear sole material. For this purpose, the acorn cups and the waste of acorn obtained
after the tannin extraction was used as the reinforcement material for thermoplastic polyurethane (TPU) based composites.
Alkali treatments were applied for modifying the surface of acorn cups and pulps to increase the compatibility between the
filler and polymer matrix. The preparation of the composites with different filler loadings (10, 20 and 30 wt%) was performed
via hot melt extrusion. The effect of surface modification on the thermal and morphological characteristics of the bio-
composites was investigated in terms of Fourier transform infrared (FT-IR) spectroscopy, differential scanning calorimeter
(DSC), thermogravimetric analysis (TGA) and scanning electron microscopy (SEM) analyses. The FT-IR results showed that
the vegetable fillers were incorporated into the polyurethane matrix successfully and partial structural modifications were
occurred as a result of the alkali treatments. Although the thermal resistance of composite materials at low temperatures was
found slightly lower than the TPU, higher thermal resistance values were obtained at higher temperatures. Overall results
showed that the homogenous dispersion of vegetable fillers within the polymer matrix was achieved successfully and the
obtained bio-composite materials were found to be a good candidate to use as bio based footwear sole material.