Characterization and antimicrobial properties of fluorine-rich carbon films deposited on poly(lactic acid)

Boonyawan, Dheerawan; Sarapirom, S.; Tunma, Somruthai; Chaiwong, C.; Rachtanapun, Pornchai; Auras, Rafael

doi:10.1016/j.surfcoat.2011.03.095

Cited by 13 publications

(7 citation statements)

References 18 publications

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“…Poly(lactic acid) (PLA) is the most popular and investigated biopolymer since it can be used in short-term and disposable products, such as bottles, bags, films and disposable cutlery (Armentano, et al, 2013;Martino, Jimenez, Ruseckaite & Aveorus, 2011;Habibi, Aouadi, Raquez, & Dubois, 2013) as well as in flexible and rigid food packaging applications (Boonyawan, et al, 2011); PLA has been approved by the US Food and Drug Administration (FDA) for direct contact with food, showing high transparency and easy processability.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Combined effect of cellulose nanocrystals, carvacrol and oligomeric lactic acid in PLA_PHB polymeric films

Luzi

Armentano

Fortunati

et al. 2019

Carbohydrate Polymers

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Biodegradable multicomponent films based on poly(lactic acid) (PLA) and poly(3hydroxybutyrate) (PHB) plasticized with oligomeric lactic acid (OLA), reinforced with synthetized cellulose nanocrystals (CNC) and modified by a natural additive with antimicrobial activity (carvacrol) were formulated and processed by extrusion. Morphological, mechanical, thermal, migration and barrier properties were tested to determine the effect of different components in comparison with neat poly(lactic acid). Results showed the positive effect of CNC in the five components based films, with the increase of the Young's modulus of the PLA_PHB_10Carv_15OLA, associated with an increase in the elongation at break (from 130% to 410%), by showing an OTR reduction of 67%. Disintegrability in compost conditions and enzymatic degradation were tested to evaluate the post-use of these films. All formulations disintegrated in less than 17 days, while proteinase K preferentially degraded the amorphous regions, and crystallinity degree of the nanocomposite films increased as a consequence of enzyme action.

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Section: Accepted Manuscriptmentioning

confidence: 99%

Combined effect of cellulose nanocrystals, carvacrol and oligomeric lactic acid in PLA_PHB polymeric films

Luzi

Armentano

Fortunati

et al. 2019

Carbohydrate Polymers

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“…In this sense, poly(lactic acid) (PLA) is one of the most attractive biopolymers with many short-term or disposable applications, such as disposable cutlery (plates, cups, lids and drinking straws), bags and film packaging [4,5]. PLA is also widely used in rigid and flexible food packaging applications [6] since it has been approved by the US Food and Drug Administration (FDA) as a food contact substance [7,8].. However, the use of PLA for food packaging is somewhat limited because of its poor ductility, thermal and oxygen barrier properties [3].…”

Section: Introductionmentioning

confidence: 99%

Characterization of PLA-limonene blends for food packaging applications

Arrieta¹,

López²,

Bou³

et al. 2013

Polymer Testing

264

150

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Polymers derived from renewable resources are now considered as promising alternatives to traditional petro-polymers as they mitigate current environmental concerns (raw renewable materials/biodegradability). d-limonene can be found in a variety of citrus, indeed is the main component of citrus oils and one of most important contributors to citrus flavor. The incorporation of limonene in PLA matrix was evaluated and quantified by Pyrolysis Gas Chromatography Mass Spectrometry (Py-GC/MS). Transparent films were obtained after the addition of the natural compound. Mechanical properties were evaluated by tensile tests. The effect of limonene on mechanical properties of PLA films was characterized by an increase in the elongation at break and a decrease in the elastic modulus. The fracture surface structure of films was evaluated by scanning electron microscopy (SEM), and homogeneous surfaces were observed in all cases. Barrier properties were reduced due to the increase of the chain mobility produced by the d-limonene.

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“…A recent report on the structure activity relationships of antitubercular nitroimidazoles highlighted the high activity achieved by the inclusion of trifluoromethoxybenzyl substituents in the nitroimidazoles [18]. Carbon films with a high fluorine content exhibited excellent antibacterial properties against E. coli growth [19]. Furthermore, a simple super hydrophobic coating composed of nano-structured fluorinated silica colloids with fluoroalkoxysilane on a silane structure demonstrated that the adhesion of Staphylococcus aureus and Pseudomonas aeruginosa was reduced by 2.08 ± 0.25 and 1.76 ± 0.12 log over controls, respectively [20].…”

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confidence: 99%

A Study of Fluorinated β-Nitrostyrenes as Antimicrobial Agents

Cornell

Nicoletti

et al. 2012

Applied Sciences

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Abstract:The effect of variously fluorine-substituted β-methyl-β-nitrostyrenes on their antimicrobial activity was investigated. Their efficacy was determined by minimum inhibition concentration (MIC) in cultures of Gram positive and Gram negative bacteria and a fungus. Highest activity against the Gram negative bacterium, E.coli, was achieved with 4-fluorine-aryl substituted β-methyl-β-nitrostyrenes, while most compounds gave excellent results against gram positive bacteria. Importantly, the addition of the β-methyl group profoundly enhanced the antibacterial activity of the compounds tested. The comparative K D values for the most potent compounds against E.coli were much lower than those required for the gram positive and fungus counterparts. This investigation illustrated that fluorine substituted nitropropenylarenes have enhanced antimicrobial activity suitable for antibiotic applications.

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Characterization and antimicrobial properties of fluorine-rich carbon films deposited on poly(lactic acid)

Cited by 13 publications

References 18 publications

Combined effect of cellulose nanocrystals, carvacrol and oligomeric lactic acid in PLA_PHB polymeric films

Combined effect of cellulose nanocrystals, carvacrol and oligomeric lactic acid in PLA_PHB polymeric films

Characterization of PLA-limonene blends for food packaging applications

A Study of Fluorinated β-Nitrostyrenes as Antimicrobial Agents

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