Thermo-mechanical, antimicrobial and biocompatible properties of PVC blends based on imidazolium ionic liquids

Zampino, Daniela; Mancuso, Monique; Zaccone, Renata; Ferreri, Tiziana; Borzacchiello, Assunta; Zeppetelli, S.; Dattilo, Sandro; Ussia, Martina; Ferreri, Loredana; Carbone, Domenico Carmelo; Recca, Giuseppe; Puglisi, Concetto

doi:10.1016/j.msec.2021.111920

Cited by 16 publications

(33 citation statements)

References 54 publications

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“…The glass transition temperatures ( T g ) of soft PVC composite films are shown in Figure 8. The T g values of KH570@TP/PVC composite films are lower than that of pure PVC film, indicating that KH570 has a plasticizing effect 31 . The lowest T g value is observed in the 7.5 phr KH570@TP/PVC composite film that has the best tensile properties 32 .…”

Section: Resultsmentioning

confidence: 96%

Preparation and properties of transparent powder filled soft poly(vinyl chloride) composite film with high transparency

Wang

2021

J of Applied Polymer Sci

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In this study, transparent powder (TP) with a refractive index similar to that of poly(vinyl chloride) (PVC) was used as inorganic filler to prepare PVC composite film with high transparency. TP was modified with γ‐methylacryloxypropyl trimethoxy silane (KH570) and characterized by Fourier transform infrared spectroscopy, X‐ray diffraction, and Zeta potential analysis. Then, KH570 modified TP was incorporated into PVC, and its effects on the mechanical, transparent, and thermal properties of soft PVC composite film were investigated by tensile test, transmittance measurement and thermogravimetric analysis. The results show that the optimum loading of modified TP is 7.5 phr (mass), at which the breaking strength (18.5 MPa) and elongation at break (669.5%) of the composite film are 60.9% and 54.0% higher than that of pure PVC film, respectively. The highest light transmittance is 85.6% at a filler loading of 5 phr. Thus, TP filled PVC composite film has excellent mechanical transparent properties and high transparency.

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Section: Resultsmentioning

confidence: 96%

Preparation and properties of transparent powder filled soft poly(vinyl chloride) composite film with high transparency

Wang

2021

J of Applied Polymer Sci

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“…We suppose that a specific orientation of the hydrophobic side chains toward the Pebax Ò matrix and of the hydrophilic quaternary ammonium groups towards the polymer surface could occur, as previously observed in Pebax Ò Rnew and in PVC loaded with different concentrations of Ionic Liquids bearing long alkyl chains on the imidazolium ring in the cation [21,40].…”

Section: Surface Wettabilitymentioning

confidence: 87%

A novel material based on an antibacterial choline-calixarene nanoassembly embedded in thin films

et al. 2022

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Supramolecular chemistry is one of the current strategies for producing advanced materials. With the aim to develop new Thin-Films with antibacterial activity, we embedded an amphiphilic choline-calix[4]arene possessing antibacterial properties in polymeric Thin-Films based on polyether-co-amide matrix (Pebax®2533). The loading of the calix[4]arene derivative in the film was performed by solution casting. The amount of calixarene additive in the films was in the range of 0.5–5 wt%. The self-supported Thin-Films were characterized by investigating phase miscibility, morphology, spectral properties, and gas transport. The release of the calixarene derivative from the films was studied in a biomimetic medium as PBS (10 mM, pH 7.4). The presence of the additive did not affect the thermal stability of the copolymer, whereas it induced an increase in crystallinity, wettability, and gas permeability of the blend films according to its concentration. The antibacterial activity of the films was evaluated in vitro against Escherichia coli and Staphylococcus aureus strains, representative of Gram-negative and Gram-positive bacteria. The developed films displayed antibacterial activity against both strains. In particular, Pebax® − 5 wt% Chol-Calix caused within 10 h a reduction in E. coli and S. aureus of 2.57 and 2 log CFU/mL, respectively. The potential toxicity of the films was also tested on mouse embryonic fibroblasts NIH/3T3. Pebax®2533/calixarene derivative combination appears a promising approach for the development of novel flexible antibacterial materials. Graphical abstract

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“…The World Health Organization of the United Nations (WHO-UN) has reported an increase in bacterial resistance in SSTIs, highlighting that the phenomenon regards Gram-negative pathogens such as E. coli [ 4 ]. In order to avoid the excessive use of antibiotics, research on alternative biocides, both natural [ 5 , 6 , 7 ] and synthetic with original structures [ 8 , 9 , 10 , 11 , 12 , 13 , 14 ], has recently been increasing.…”

Section: Introductionmentioning

confidence: 99%

Polymer Blends Based on 1-Hexadecyl-3-methyl Imidazolium 1,3-Dimethyl 5-Sulfoisophthalate Ionic Liquid: Thermo-Mechanical, Surface Morphology and Antibacterial Properties

et al. 2023

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In this study, antibacterial polymer blends based on Polyvinyl Chloride (PVC) and Polystyrene-Ethylene-Butylene-Styrene (SEBS), loaded with the ionic liquid (IL) 1-hexadecyl-3-methyl imidazolium 1,3-dimethyl 5-sulfoisophthalate (HdmimDMSIP) at three different concentrations (1%, 5%, and 10%), were produced. The IL/blends were characterized by their thermo-mechanical properties, surface morphology, and wettability. IL release from the blends was also evaluated. The agar diffusion method was used to test the antibacterial activity of the blends against Staphylococcus epidermidis and Escherichia coli. Results from thermal analyses showed compatibility between the IL and the PVC matrix, while phase separation in the SEBS/IL blends was observed. These results were confirmed using PY-GC MS data. SEM analyses highlighted abundant IL deposition on PVC blend film surfaces containing the IL at 5–10% concentrations, whereas the SEBS blend film surfaces showed irregular structures similar to islands of different sizes. Data on water contact angle proved that the loading of the IL into both polymer matrices induced higher wettability of the blends’ surfaces, mostly in the SEBS films. The mechanical analyses evidenced a lowering of Young’s Modulus, Tensile Stress, and Strain at Break in the SEBS blends, according to IL concentration. The PVC/IL blends showed a similar trend, but with an increase in the Strain at Break as IL concentration in the blends increased. Both PVC/IL and SEBS/IL blends displayed the best performance against Staphylococcus epidermidis, being active at low concentration (1%), whereas the antimicrobial activity against Escherichia coli was lower than that of S. epidermidis. Release data highlighted an IL dose-dependent release. These results are promising for a versatile use of these antimicrobial polymers in a variety of fields.

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Thermo-mechanical, antimicrobial and biocompatible properties of PVC blends based on imidazolium ionic liquids

Cited by 16 publications

References 54 publications

Preparation and properties of transparent powder filled soft poly(vinyl chloride) composite film with high transparency

Preparation and properties of transparent powder filled soft poly(vinyl chloride) composite film with high transparency

A novel material based on an antibacterial choline-calixarene nanoassembly embedded in thin films

Polymer Blends Based on 1-Hexadecyl-3-methyl Imidazolium 1,3-Dimethyl 5-Sulfoisophthalate Ionic Liquid: Thermo-Mechanical, Surface Morphology and Antibacterial Properties

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