Electrospun Fibers Containing Bio‐Based Ricinoleic Acid: Effect of Amount and Distribution of Ricinoleic Acid Unit on Antibacterial Properties

Totaro, Grazia; Paltrinieri, Laura; Mazzola, Giuseppe; Vannini, Micaela; Sisti, Laura; Gualandi, Chiara; Ballestrazzi, Antonio; Valeri, Sergio; Pollicino, Antonino; Celli, Annamaria; Gioia, Diana Di; Focarete, Maria Letizia

doi:10.1002/mame.201500129

Cited by 10 publications

(9 citation statements)

References 56 publications

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“…PVDF is a rather inert and chemically stable fossil-based polymer that we intend to modify with the addition of the bio-based PCADE to confer to the final product a partial bio-based content and as well as new chemical groups for further functionalisation. For the preparation of PVDF/PCADE fibres, we intentionally employed a low molecular weight PCADE ( M n = 2800 g mol −1 , Ð = 1.5) to exploit the tendency of low-molecular-weight compounds to migrate towards the jet surface during electrospinning and thus to obtain epoxy-enriched fibre surface [ 29 , 30 , 43 , 44 , 45 ].…”

Section: Resultsmentioning

confidence: 99%

Functionalisable Epoxy-rich Electrospun Fibres Based on Renewable Terpene for Multi-Purpose Applications

et al. 2021

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New bio-based polymers capable of either outperforming fossil-based alternatives or possessing new properties and functionalities are of relevant interest in the framework of the circular economy. In this work, a novel bio-based polycarvone acrylate di-epoxide (PCADE) was used as an additive in a one-step straightforward electrospinning process to endow the fibres with functionalisable epoxy groups at their surface. To demonstrate the feasibility of the approach, poly(vinylidene fluoride) (PVDF) fibres loaded with different amounts of PCADE were prepared. A thorough characterisation by TGA, DSC, DMTA and XPS showed that the two polymers are immiscible and that PCADE preferentially segregates at the fibre surface, thus developing a very simple one-step approach to the preparation of ready-to-use surface functionalisable fibres. We demonstrated this by exploiting the epoxy groups at the PVDF fibre surface in two very different applications, namely in epoxy-based carbon fibre reinforced composites and membranes for ω-transaminase enzyme immobilisation for heterogeneous catalysis.

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Section: Resultsmentioning

confidence: 99%

Functionalisable Epoxy-rich Electrospun Fibres Based on Renewable Terpene for Multi-Purpose Applications

et al. 2021

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“…Different antimicrobial compounds such as silver, ricinoleic acid [ 13 ], and others have been used to develop active food packaging materials either incorporated into the polymer matrix or directly copolymerized with the electrospun fibers. Due to their strong antimicrobial properties and thermal stability, silver nanoparticles (AgNPs) have so far been one of the most researched nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

On the Use of the Electrospinning Coating Technique to Produce Antimicrobial Polyhydroxyalkanoate Materials Containing In Situ-Stabilized Silver Nanoparticles

et al. 2016

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Electro-hydrodynamic processing, comprising electrospraying and electrospinning techniques, has emerged as a versatile technology to produce nanostructured fiber-based and particle-based materials. In this work, an antimicrobial active multilayer system comprising a commercial polyhydroxyalkanoate substrate (PHA) and an electrospun PHA coating containing in situ-stabilized silver nanoparticles (AgNPs) was successfully developed and characterized in terms of morphology, thermal, mechanical, and barrier properties. The obtained materials reduced the bacterial population of Salmonella enterica below the detection limits at very low silver loading of 0.002 ± 0.0005 wt %. As a result, this study provides an innovative route to generate fully renewable and biodegradable materials that could prevent microbial outbreaks in food packages and food contact surfaces.

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“…RA [(9 Z ,12 R )-12-hydroxyoctadec-9-enoic acid] takes up of approximately 90% of castor oil, which is low cost and commercially available. RA could form the polyester by the condensation reaction of hydroxyl and carboxylic groups; meanwhile, the unsaturated bonds render RA with cross-linkable properties. , The antibacterial properties of RA have also been verified by previous reports. , In recent years, the polyesters from RA have been widely studied. − It was found that poly(ricinoleic acid) (PRA) with good mechanical properties was difficult to obtain, due to the poor reactivity of RA. − Although a elastomer was successfully prepared from pure methyl ricinoleate using high loading of lipase as catalyst, , the high cost of monomer and lipase would inevitably hamper the practical applications. RA as a minor component often copolymerized with other monomers to tune the properties of materials. ,,− On the other hand, hyperbranched polymers attract many researchers’ attention due to their unique properties such as low viscosity, good film-forming and easy cross-linking properties. − There were some papers concerning the synthesis of hyperbranched polymers based on castor oil, ,, in which the content of castor oil was low.…”

Section: Introductionmentioning

confidence: 86%

Biomimic Plant Cuticle from Hyperbranched Poly(ricinoleic acid) and Cellulose Film

Zhang

Uyama

2015

ACS Sustainable Chem. Eng.

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Plant cuticle is an ideal biobased packaging material with well-balanced performance. However, it could not be extracted from plants for practical applications. In this work, we successfully fabricated a biomimic plant cuticle from hyperbranched poly(ricinoleic acid) (HBPRA, biobased content > 96%) and cellulose film through UV-initiated thio-ene click reaction. This biomimic cuticle possessed excellent transparency (transmittance ≈ 90% in the visible light range). The SEM observation showed that the biomimic cuticle was composed of two layers, which were perfectly attached. The properties of two surfaces of biomimic cuticle displayed significant differences. Cellulose side was hydrophilic with contact angle (CA) around 44° and pencil hardness > 6H. On the contrary, the HBPRA side was hydrophobic with CA about 91° and pencil hardness ≈ B. With respect to the slippery cellulose side, HBPRA side could attach to various substrates under gentle force. In addition, the tensile test showed good mechanical properties. The elongation at break and maximum stress of biomimic cuticle were 44% and 29 MPa, respectively. The above results suggest that the biomimic cuticle may have potential applications for packaging and displaying materials.

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Electrospun Fibers Containing Bio‐Based Ricinoleic Acid: Effect of Amount and Distribution of Ricinoleic Acid Unit on Antibacterial Properties

Cited by 10 publications

References 56 publications

Functionalisable Epoxy-rich Electrospun Fibres Based on Renewable Terpene for Multi-Purpose Applications

Functionalisable Epoxy-rich Electrospun Fibres Based on Renewable Terpene for Multi-Purpose Applications

On the Use of the Electrospinning Coating Technique to Produce Antimicrobial Polyhydroxyalkanoate Materials Containing In Situ-Stabilized Silver Nanoparticles

Biomimic Plant Cuticle from Hyperbranched Poly(ricinoleic acid) and Cellulose Film

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