dc.creator | Spasojević, Pavle | |
dc.creator | Savić, Sanja | |
dc.creator | Panić, Vesna | |
dc.creator | Spasojević Savković, Milica | |
dc.creator | Marković, Maja | |
dc.creator | Pantić, Olga | |
dc.creator | Popović, Ivanka | |
dc.date.accessioned | 2023-11-21T20:52:16Z | |
dc.date.available | 2023-11-21T20:52:16Z | |
dc.date.issued | 2023 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6869 | |
dc.description.abstract | Emerging efforts in the field of biocomposites established novel combinations of biobased matrix
materials and reinforcements, as well as the optimization of curing conditions, to enhance their
properties and expand their range of applications. The curing conditions of nanocellulose
reinforced biobased unsaturated polyester resin (UPR) based on itaconic acid and it derivatives’
were examined within this work. Since the curing process of biobased UPR requires the presence
of both an initiator and an activator, the optimization was conducted in two phases. The first
phase investigated the effect of different concentrations of an activator, cobalt octoate, (0.5, 1.0
and 1.5 mass%) with a constant concentration of an initiator, a mixture of dibenzoyl peroxide
(DBP) and methyl ethyl ketone peroxide (MEKP) (DBP to MEKP ratio 1.5:1.0; 2.5 mass% total).
The ratios of DBP and MEKP were varied in the second phase of experiments in the following
manner: 2.5:0,1.75:0.75, 0.75:1.75 and 0:2.5 (keeping the total initiator mass% of 2.5). The effect
of the different curing conditions on the UPR properties was monitored via the gel content
analysis and the uniaxial tensile test. It was shown that the increase in activator concentration
led to the decrease in gel content, tensile strength and elongation at the break. On the other
hand, the increase in dibenzoyl peroxide concentration in the initiator mixture revealed
enhanced overall mechanical properties. The optimal curing conditions were found to be 0.5
mass% of activator, and 1.75:0.75 DBP to MEKP ratio in the initiator mixture. Thereby obtained
UPR biocomposite showed a significant increase in elastic attributes suggesting that these
materials can be used where high elasticity is needed. | sr |
dc.language.iso | en | sr |
dc.relation | info:eu-repo/grantAgreement/ScienceFundRS/Zeleni/6793/RS// | sr |
dc.rights | restrictedAccess | sr |
dc.source | Book of Abstracts / 29thPolyChar - World Forum on Advanced Materials, 26 - 29 September 2023, Nice, France | sr |
dc.title | OPTIMIZATION OF CURING CONDITIONS FOR NANOCELLULOSE REINFORCED BIOBASED UNSATURATED POLYESTER RESIN | sr |
dc.type | conferenceObject | sr |
dc.rights.license | ARR | sr |
dc.citation.spage | 56 | |
dc.identifier.rcub | https://hdl.handle.net/21.15107/rcub_technorep_6869 | |
dc.type.version | publishedVersion | sr |