Effect of copper nanoparticles on the properties of SEBS/PP compounds

Ribeiro, Vanda Ferreira; Simões, Douglas Naue; Pittol, Michele; Tomacheski, Daiane; Santana, Ruth Marlene Campomanes

doi:10.1016/j.polymertesting.2017.07.033

Cited by 19 publications

(10 citation statements)

References 25 publications

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“…Several publications report studies about the use of polymer/cooper formulations in antimicrobial applications 3, [5][6][7][8][9][10][11][12] . However, except for previous work published by our research group on the use of copper nanoparticles 13 , publications based on SEBS/PP blends were not found in the literature. Compounds based on SEBS/PP do not have inherent biocidal properties.…”

Section: Introductionmentioning

confidence: 86%

Use of Copper Microparticles in SEBS/PP Compounds. Part 1: Effects on Morphology, Thermal, Physical, Mechanical and Antibacterial Properties

et al. 2019

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An alternative for producing thermoplastic elastomers (TPEs) with antibacterial properties is to add copper to the polymeric matrices. This study investigates the effects of the addition of copper microparticles on the morphological, thermal, physical and mechanical behavior and antibacterial properties of a blend composed by styrene-(ethylene-butylene)-styrene triblock copolymer (SEBS) and polypropylene (PP) homopolymer. The cooper microparticles used (commercial grade, produced by electrolytical process) were dispersed in a TPE matrix composed by SEBS/PP. Two bacterial species associated with infections (Escherichia coli and Staphylococcus aureus) were used in the antibacterial assays. The incorporation of copper microparticles in TPE matrix did not promote expressive changes in the thermal, physical and mechanical properties of the compounds. The findings from antibacterial assays showed a reduction of 99.99% in bacterial counts.

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Section: Introductionmentioning

confidence: 86%

Use of Copper Microparticles in SEBS/PP Compounds. Part 1: Effects on Morphology, Thermal, Physical, Mechanical and Antibacterial Properties

et al. 2019

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“…[7][8][9] Currently, the most widely used commercially valuable HSBCs are the poly(styrene-b-ethylene-b-butene-b-styrene) (SEBS), poly(styrene-bethylene-b-ethylene-b-propylene-b-styrene) (SEEPS), and poly(styreneb-ethylene-b-propylene-b-styrene) (SEPS), which can beused in the production of high-end elastomers, resin modification, and sheathing materials for wires and cables, etc. [10][11][12] Despite the excellent performance, HSBC presents a poor processing fluidity, especially for some grades of HSBC with high molecular weight. 13 In practice, the high molecular weight HSBC cannot be processed without adding additional plasticizers such as extender oil and Polypropylene (PP).…”

Section: Introductionmentioning

confidence: 99%

“…Comparing with the traditional non‐hydrogenated SBC, the HSBC exhibits much better physical and chemical stability, aging properties, and thermal stability since the elimination of double‐bonds 7–9 . Currently, the most widely used commercially valuable HSBCs are the poly(styrene‐b‐ethylene‐b‐butene‐b‐styrene) (SEBS), poly(styrene‐b‐ethylene‐b‐ethylene‐b‐propylene‐b‐styrene) (SEEPS), and poly(styrene‐b‐ethylene‐b‐propylene‐b‐styrene) (SEPS), which can beused in the production of high‐end elastomers, resin modification, and sheathing materials for wires and cables, etc 10–12 . Despite the excellent performance, HSBC presents a poor processing fluidity, especially for some grades of HSBC with high molecular weight 13 .…”

Section: Introductionmentioning

confidence: 99%

Structure and performance of hydrogenated styrenic block copolymers/polypropylene/oil (HSBCs/PP/oil) composites

Liu

Xiong

et al. 2021

Polymers for Advanced Techs

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In the past few decades, considerable attention has been paid to the thermoplastic elastomer (TPE). Among them, hydrogenated styrenic block copolymers (HSBCs) have attracted extensive interest because of outstanding ozone resistance, remarkable aging properties, and environmental friendliness. Therefore, theoretical and experimental investigations on the HSBCs/PP/oil composites have been reported many times, but the influence of molecular structure on the structure and properties of composites has yet to be identified. In this study, three HSBCs with different molecular structures were used as the research object to systematically study the effects of their molecular structural differences on the aggregate structure, microstructural, mechanical, and thermal properties of HSBCs/PP/oil composites. It was found thatthe content of side groups in the molecular chain was the main factor affecting the structure and performance of the HSBCs/PP/oil composites. This research can provide theoretical guidance for the molecular design and structural control of the new HSBC, so it has obvious theoretical significance and practical value.

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“…Silver-coated yarns have been reported to have a low impedance, good biocompatibility and high conductivity [38,48]. The most widely used inorganic antimicrobial additives are based on silver and copper [49], which together with biocompatibility makes silver a good candidate for skin contact. There are already commercially available silver-coated fibres and fabrics for electrode fabrication.…”

Section: Introductionmentioning

confidence: 99%

Surface modification of textile electrodes to improve electrocardiography signals in wearable smart garment

Soroudi

Hernández

Wipenmyr

et al. 2019

J Mater Sci: Mater Electron

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Recording high quality biosignals by dry textile electrodes is a common challenge in medical health monitoring garments. The aim of this study was to improve skin-electrode interface and enhance the quality of recorded electrocardiography (ECG) signals by modification of textile electrodes embedded in WearItMed smart garment. The garment has been developed for long-term health monitoring in patients suffering from epilepsy and Parkinson's disease. A skin-friendly electro-conductive elastic paste was formulated to coat and modify the surface of the knitted textile electrodes. The modifications improved the surface characteristics of the electrodes by promoting a more effective contact area between skin and electrode owing to a more even surface, fewer pores, greater surface stability against touch, and introduction of humidity barrier properties. The modifications decreased the skin-electrode contact impedance, and consequently improved the recorded ECG signals obviously when low pressure was applied to the electrodes, therefore contributed to greater patient comfort. The created contact surface allowed the natural humidity of the skin/sweat to ease the signal transfer between the electrode and the body, while introducing a shorter settling time and retaining moisture over a longer time. Microscopic images, ECG signal measurements, electrode-skin contact impedance at different pressures and times, and water absorbency were measured and reported.

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Effect of copper nanoparticles on the properties of SEBS/PP compounds

Cited by 19 publications

References 25 publications

Use of Copper Microparticles in SEBS/PP Compounds. Part 1: Effects on Morphology, Thermal, Physical, Mechanical and Antibacterial Properties

Use of Copper Microparticles in SEBS/PP Compounds. Part 1: Effects on Morphology, Thermal, Physical, Mechanical and Antibacterial Properties

Structure and performance of hydrogenated styrenic block copolymers/polypropylene/oil (HSBCs/PP/oil) composites

Surface modification of textile electrodes to improve electrocardiography signals in wearable smart garment

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