The effect of natural modifiers for starch hydrophobization on performance of composite based on ethylene acrylic acid copolymer

Marinković, Аleksandar; Vuksanović, Marija M.; Karić, Nataša; Djokić, Veljko; Popović, Mina; Heinemann, Radmila Jančić; Tomić, Nataša Z.

doi:10.1002/pc.25903

Cited by 6 publications

(2 citation statements)

References 57 publications

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“…The Charpy method was used to test the toughness of composite in accordance with the standard EN ISO 179-1/1fU (EN ISO 179-1:2000) using the device Zwick & Co. KG. Germany [ 49 ]. Dynamic-mechanical analysis of cured composites was performed using the Modular Compact Rheometer MCR–302 (Anton Paar GmbH, Ashland, VA, USA) in the torsion deformation mode [ 50 ].…”

Section: Methodsmentioning

confidence: 99%

Synthesis, Characterization and Application of Biobased Unsaturated Polyester Resin Reinforced with Unmodified/Modified Biosilica Nanoparticles

Embirsh,

Stajčić,

Gržetić

et al. 2023

Polymers

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This paper presents sustainable technology for environmentally friendly composite production. Biobased unsaturated polyester resin (b-UPR), synthesized from waste polyethylene terephthalate (PET) glycosylate and renewable origin maleic anhydride (MAnh) and propylene glycol (PG), was reinforced with unmodified and vinyl-modified biosilica nanoparticles obtained from rice husk. The structural and morphological properties of the obtained particles, b-UPR, as well as composites, were characterized by Fourier-transform infrared spectroscopy (FTIR), nuclear magnetic resonance spectroscopy (NMR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) techniques. The study of the influence of biosilica modification on the mechanical properties of composites was supported by hardness modeling. Improvement of the tensile strength of the b-UPR-based composite at 2.5 wt.% addition of biosilica modified with vinyl silane, named “b-UPR/SiO2-V” composite, has been achieved with 88% increase. The thermal aging process applied to the b-UPR/SiO2-V composite, which simulates use over the product’s lifetime, leads to the deterioration of composites that were used as fillers in commercial unsaturated polyester resin (c-UPR). The grinded artificially aged b-UPR composites were used as filler in c-UPR for the production of a table top layer with outstanding mechanical properties, i.e., impact resistance and microhardness, as well as fire resistance rated in the V-0 category according to the UL-94 test. Developing sustainable composites that are chemically synthesized from renewable sources is important from the aspect of preserving the environment and existing resources as well as the extending their life cycle.

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Section: Methodsmentioning

confidence: 99%

Synthesis, Characterization and Application of Biobased Unsaturated Polyester Resin Reinforced with Unmodified/Modified Biosilica Nanoparticles

Embirsh,

Stajčić,

Gržetić

et al. 2023

Polymers

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“…The third endothermic event ranging from approximately 240 to 340 C in Figure 9 is associated with the thermal degradation process of the polymer matrix that is characterized by a significant loss of mass in Figure 10, and also to the degradation of the BSG fibers, which is in accordance with the TGA results. [62] TGA curves and their first derivative (DTG) for TPS, C35-2.5, and C100-1 samples are shown in Figure 10, where the occurrence of three main stages of mass loss can be observed.…”

Section: Thermal Propertiesmentioning

confidence: 99%

Developing thermoplastic corn starch composites filled with brewer's spent grain for applications in biodegradable films

2021

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Despite the growing interest in utilizing starch-based biodegradable films, their low mechanical properties generally limit them from being widely used. On the other hand, brewer's spent grain (BSG) is an abundant by-product thatdoes not yet have high added-value industrial use. This study proposes the development of starch-based composites filled with BSG for applications in biodegradable films. Different contents (1-5 wt%) of BSG fibers of different sizes (35, 60, and 100 mesh) were used aiming to identify the film compositions with better mechanical and thermal properties. The composites were produced by casting and had their mechanical, morphological, and thermal properties evaluated. The composites with the most promising mechanical properties

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An Assessment of the Properties of Green Composites Utilizing a Variety of Bio‐Based Crosslinkers

Baishya,

Maji

2024

ChemistrySelect

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Bio‐based materials as crosslinkers for composites have gained attention for their nontoxic, cost‐effective benefits. Using eco‐friendly crosslinkers enhances the properties of the composites and promotes sustainable manufacturing practices too. This study aimed to compare the efficacy of citric acid (CA), itaconic acid (IA), and tannic acid (TA), derived from plant‐based sources, as crosslinkers in the creation of green composites. In this work, compression molding technique was employed for producing composites using coconut fiber as the reinforcing agent and methacrylic anhydride modified epoxidized linseed soybean oil (MAELSO) as the resin. The amount of crosslinkers was varied between 5, 10, and 15 (wt%) to achieve this. Nuclear magnetic resonance spectroscopy confirmed the successful modification of the resin. Fourier transform infrared spectroscopy revealed interactions between components of the composites. Biocomposites loaded with 5 wt% of CA showed 1268 and 92% increase in tensile strength and 1098 and 49% increase in flexural strength compared to those of similar wt% of TA‐ and IA‐based composites respectively. Similarly, the impact strength for CA‐based composite was 84.94 J/m against 168.74 J/m for IA and 330.85 J/m for TA‐based composites. Additionally, composites containing 5 wt% CA exhibited the highest levels of chemical resistance, flame retardancy, and thermal stability. Thus the results suggest that citric acid can serve as an effective crosslinker to fabricate environmentally acceptable composite materials that are suitable for long‐term use. This is noteworthy as it can pave the way for the production of sustainable and eco‐friendly materials, which can be used in various industrial and commercial applications.

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The effect of natural modifiers for starch hydrophobization on performance of composite based on ethylene acrylic acid copolymer

Cited by 6 publications

References 57 publications

Synthesis, Characterization and Application of Biobased Unsaturated Polyester Resin Reinforced with Unmodified/Modified Biosilica Nanoparticles

Synthesis, Characterization and Application of Biobased Unsaturated Polyester Resin Reinforced with Unmodified/Modified Biosilica Nanoparticles

Developing thermoplastic corn starch composites filled with brewer's spent grain for applications in biodegradable films

An Assessment of the Properties of Green Composites Utilizing a Variety of Bio‐Based Crosslinkers

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