Unsaturated Polyester Resins

Fink, Johannes Karl

doi:10.1016/b978-081551515-9.50003-2

Cited by 3 publications

(1 citation statement)

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“…Among the various synthetic polymers, unsaturated polyester resins are the most commonly known in preparing composites and exceed 80% of all components [ 1 , 2 ]. The global unsaturated polyester resin market will grow at a steady 5.3% CAGR over the forecast period (2019–2029) [ 3 , 4 , 5 ]. Greater concern about health as a result of industrial activities enhances the demand for unsaturated polyester resins.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Testing of Antimicrobial Activity of Composites of Unsaturated Polyester Resins with Wood Flour and Silver Nanoparticles

et al. 2021

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This paper presents the properties of the wood-resin composites. For improving their antibacterial character, silver nanoparticles were incorporated into their structures. The properties of the obtained materials were analyzed in vitro for their anti-biofilm potency in contact with aerobic Gram-positive Staphylococcus aureus and Staphylococcus epidermidis; and aerobic Gram-negative Escherichia coli and Pseudomonas aeruginosa. These pathogens are responsible for various infections, including those associated with healthcare. The effect of silver nanoparticles incorporation on mechanical and thermomechanical properties as well as gloss were investigated for the samples of composites before and after accelerating aging tests. The results show that bacteria can colonize in various wrinkles and cracks on the composites with wood flour but also the surface of the cross-linked unsaturated polyester resin. The addition of nanosilver causes the death of bacteria. It also positively influences mechanical and thermomechanical properties as well as gloss of the resin.

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Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Testing of Antimicrobial Activity of Composites of Unsaturated Polyester Resins with Wood Flour and Silver Nanoparticles

et al. 2021

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Synthesis and characterization of unsaturated polyester/carborundum composites

Asaad

2012

J of Applied Polymer Sci

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Two unsaturated polyesters, one based on phthalic anhydride PE P and the other based on isophthalic acid PE I, were synthesized. The chemical structure of the two polyesters was characterized by IR and 1 H and 13 C NMR spectroscopy. The effect of styrene concentration on the curing of polyesters was also studied. It has been found that the percent of polyester/styrene (70/30 wt %) gave the highest percent of curing. Different concentrations of carborundum (0-70 wt %) were used to prepare polyester composites. A comparative study was done on the properties of the two prepared polyesters PE P and PE I and their composites in term of their thermal, mechanical, electrical, and physical properties. The results indicate that the polyester based on isophthalic acid (PE I ) and its composites gave higher compressive strength values and lower water absorption than those based on phthalic anhydride (PE P ). The presence of carborundum improved the thermal stability than the cured polyesters and electrical properties.

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