Preparation, Structure, and Properties of PVA–AgNPs Nanocomposites
The aim of the work was to prepare a polymer matrix composite doped by silver nanoparticles and analyze the influence of silver nanoparticles (AgNPs) on polymers’ optical and toxic properties. Two different colloids of AgNPs were prepared by chemical reduction. The first colloid, a blue one, contain...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/15/2/379 |
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| author | Oksana Velgosova Lívia Mačák Erika Múdra Marek Vojtko Maksym Lisnichuk |
| author_facet | Oksana Velgosova Lívia Mačák Erika Múdra Marek Vojtko Maksym Lisnichuk |
| author_sort | Oksana Velgosova |
| collection | DOAJ |
| description | The aim of the work was to prepare a polymer matrix composite doped by silver nanoparticles and analyze the influence of silver nanoparticles (AgNPs) on polymers’ optical and toxic properties. Two different colloids of AgNPs were prepared by chemical reduction. The first colloid, a blue one, contains stable triangular nanoparticles (the mean size of the nanoparticles was ~75 nm). UV–vis spectrophotometry showed that the second colloid, a yellow colloid, was very unstable. Originally formed spherical particles (~11 nm in diameter) after 25 days changed into a mix of differently shaped nanoparticles (irregular, triangular, rod-like, spherical, decahedrons, etc.), and the dichroic effect was observed. Pre-prepared AgNPs were added into the PVA (poly(vinyl alcohol)) polymer matrix and PVA–AgNPs composites (poly(vinyl alcohol) doped by Ag nanoparticles) were prepared. PVA–AgNPs thin layers (by a spin-coating technique) and fibers (by electrospinning and dip-coating techniques) were prepared. TEM and SEM techniques were used to analyze the prepared composites. It was found that the addition of AgNPs caused a change in the optical and antibiofilm properties of the non-toxic and colorless polymer. The PVA–AgNPs composites not only showed a change in color but a dichroic effect was also observed on the thin layer, and a good antibiofilm effect was also observed. |
| first_indexed | 2024-03-09T11:22:58Z |
| format | Article |
| id | doaj.art-0de84af768924cc0a002d5e777d0787d |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T11:22:58Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-0de84af768924cc0a002d5e777d0787d2023-12-01T00:09:05ZengMDPI AGPolymers2073-43602023-01-0115237910.3390/polym15020379Preparation, Structure, and Properties of PVA–AgNPs NanocompositesOksana Velgosova0Lívia Mačák1Erika Múdra2Marek Vojtko3Maksym Lisnichuk4Institute of Materials and Quality Engineering, Faculty of Materials Metallurgy and Recycling, Technical University of Kosice, Letná 9/A, 042 00 Kosice, SlovakiaInstitute of Materials and Quality Engineering, Faculty of Materials Metallurgy and Recycling, Technical University of Kosice, Letná 9/A, 042 00 Kosice, SlovakiaDivision of Ceramic and Non-Metallic Systems, Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Kosice, SlovakiaDivision of Ceramic and Non-Metallic Systems, Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Kosice, SlovakiaFaculty of Science, Institute of Physics, Pavol Jozef Šafárik University in Košice, Park Angelinum 9, 040 01 Košice, SlovakiaThe aim of the work was to prepare a polymer matrix composite doped by silver nanoparticles and analyze the influence of silver nanoparticles (AgNPs) on polymers’ optical and toxic properties. Two different colloids of AgNPs were prepared by chemical reduction. The first colloid, a blue one, contains stable triangular nanoparticles (the mean size of the nanoparticles was ~75 nm). UV–vis spectrophotometry showed that the second colloid, a yellow colloid, was very unstable. Originally formed spherical particles (~11 nm in diameter) after 25 days changed into a mix of differently shaped nanoparticles (irregular, triangular, rod-like, spherical, decahedrons, etc.), and the dichroic effect was observed. Pre-prepared AgNPs were added into the PVA (poly(vinyl alcohol)) polymer matrix and PVA–AgNPs composites (poly(vinyl alcohol) doped by Ag nanoparticles) were prepared. PVA–AgNPs thin layers (by a spin-coating technique) and fibers (by electrospinning and dip-coating techniques) were prepared. TEM and SEM techniques were used to analyze the prepared composites. It was found that the addition of AgNPs caused a change in the optical and antibiofilm properties of the non-toxic and colorless polymer. The PVA–AgNPs composites not only showed a change in color but a dichroic effect was also observed on the thin layer, and a good antibiofilm effect was also observed.https://www.mdpi.com/2073-4360/15/2/379nanoparticlessilverpolymer matrix nanocompositePVA“ex situ” preparing |
| spellingShingle | Oksana Velgosova Lívia Mačák Erika Múdra Marek Vojtko Maksym Lisnichuk Preparation, Structure, and Properties of PVA–AgNPs Nanocomposites Polymers nanoparticles silver polymer matrix nanocomposite PVA “ex situ” preparing |
| title | Preparation, Structure, and Properties of PVA–AgNPs Nanocomposites |
| title_full | Preparation, Structure, and Properties of PVA–AgNPs Nanocomposites |
| title_fullStr | Preparation, Structure, and Properties of PVA–AgNPs Nanocomposites |
| title_full_unstemmed | Preparation, Structure, and Properties of PVA–AgNPs Nanocomposites |
| title_short | Preparation, Structure, and Properties of PVA–AgNPs Nanocomposites |
| title_sort | preparation structure and properties of pva agnps nanocomposites |
| topic | nanoparticles silver polymer matrix nanocomposite PVA “ex situ” preparing |
| url | https://www.mdpi.com/2073-4360/15/2/379 |
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