Surface morphological characteristics of a copolyimide film prepared from a fluorine-based dianhydride combined with an aliphatic siloxane-based diamine and an aromatic containing ether linkages one, were studied before and after oxigen plasma treatment using atomic force microscopy (AFM). The three-dimensional texture parameters calculated from the AFM data …
Get MoreAbstract. The present study was aimed at investigating bactericidal properties of polylactide (PLA) films containing three different polyhexamethylene guanidine hydrochloride (PHMG) derivatives and effect of the derivatives on extracellular hydrolytic enzymes and intracellular dehydrogenases.All PHMG derivatives had a slightly stronger …
Get MoreInfluence of the unit energy (E u) of corona discharge used for modification of pure polylactide (PLA) and polylactide nanocomposite (PLAC) containing 5 wt% of an aluminosilicate nanofiller (Cloisite 30B) on water (Θ W) and diiodomethane (Θ D) contact angles as well as on surface free energy (γ s) of these polymers was studied.Θ W and Θ D as advancing contact angles were …
Get MoreThe films were cut into 95 mm x 12.5 mm strips using a hydraulic press and a custom-made metal die for tensile testing. A minimum of 10 samples was prepared for each CNC composite loading and type of surfactant. The thicknesses of the films were taken at 4 different sections of the films, and an average of 0.18 [+ or -] 0.02 mm was obtained.
Get MoreFor pristine polylactide films the OPC was reported to be in the range between 1.94 × 10 −18 and 4.85 × 10 −18 m 3 m(STP) m −2 s −1 Pa −1. In contrast, in this paper we have adopted an approach based on the stability of food stored under a seal made of studied material.
Get MoreSilver nanoparticles were deposited on the surface of an extruded film of linear low density polyethylene/cyclo olefin copolymer (LLDPE/COC) blend by an ultrasound-assisted method. A series of LLDPE/COC/silver nanocomposites, containing 0.02, 0.05, 0.08 and 0.1 mol/L of AgNO3 were prepared and characterized. The effect of ultrasound method on …
Get Moretine PLA to produce nanocomposite films containing 1–3 wt.% ZnO. By comparison to the more traditional multi‐step process, the approach allowed the production of nanocomposites (films)
Get MoreThere is a great interest in incorporating catechol moieties into polymers in a controlled manner due to their interesting properties, such as the promotion of adhesion, redox activity or bioactivity. One possibility is to incorporate the catechol as end-group in a polymer chain using a functional initiator by means of controlled polymerization strategies.
Get MoreVarious PLA–ZnO MBs containing high contents of silane-treated ZnO nanoparticles (up to 40 wt.% nanofiller specifically treated with triethoxycaprylylsilane) were produced by melt-compounding using twin-screw extruders. Subsequently, the selected MBs were melt blended with pristine PLA to produce nanocomposite films containing 1–3 wt.% ZnO.
Get MoreUS5631066A US08/427,635 US42763595A US5631066A US 5631066 A US5631066 A US 5631066A US 42763595 A US42763595 A US 42763595A US 5631066 A US5631066 A US 5631066A Authority US United States Prior art keywords poly acid film metalized packaging film Prior art date Legal status (The legal status is an assumption and is not a legal …
Get MoreThe bioactive packaging polyvinyl alcohol PVA/starch (PSt) films were prepared by incorporating green synthesized silver nanoparticles (AgNPs). The effect of oregano essential oil (OEO) content on the green synthesis of AgNPs in PSt film was studied. The PSt-AgNPs containing 5 wt% OEO showed minimum inhibitory concentration against Escherichia coli (E. …
Get MoreAmr Zeid, Ioannis K. Karabagias, Madonna Nassif, Michael G. Kontominas, Preparation and evaluation of antioxidant packaging films made of polylactic acid containing thyme, rosemary, and oregano essential oils, Journal of Food Processing and Preservation, 10.1111/jfpp.14102, 43, 10, (2019).
Get MorePoly (L-lactide) (PLA) fiber film containing silver nanorods were prepared via electrospinning. Morphology of the PLA/Ag fibers and distribution of the silver nanoparticles were characterized. These fibers showed antimicrobial activities against Gram-negative E. coli, because of the presence of a small amount of silver nanorods.
Get MoreTorres-Giner, S., Martinez-Abad, A., & Lagaron, J. M. (2014). Zein-based ultrathin fibers containing ceramic nanofillers obtained by electrospinning. II. Mechanical properties, gas barrier, and sustained release capacity of biocide thymol in multilayer polylactide films. Journal of Applied Polymer Science, 131(18), n/a-n/a. doi:10.1002/app.40768
Get Morenanocomposite films containing the nanoclays Cloisite 93A a nd C loisite 30B and found that these nanoclays successfully reduced the growth of E. c oli, P. aeruginos a,
Get MoreHydrolytic degradation of porous polylactide (PLA) films with various porosity and morphology has been thoroughly investigated. It has been found that the structural and mechanical modification of PLA films by the environmental crazing mechanism results in the formation of a porous structure, is accompanied by the change in molecular-weight …
Get MorePolylactide can be processed, like most thermoplastic polymers, into fibers and films for various biomedical applications, including sutures, dialysis media, and drug delivery devices. PLA is also attractive as a sustainable alternative to petrochemical-derived products, since it can be produced from a more economic resource such as corn starch.
Get Moreproduction and characterization of polylactide/silver nanowire nanocomposite films a thesis submitted to the graduate school of natural and applied sciences of middle east technical university by doĞa doĞanay in partial fulfillment of the requirements for the degree of master of science in metallurgical and materials engineering september 2016
Get MoreAntimicrobial beeswax coated polylactide films with silver control release capacity Int J Food Microbiol. 2014 Mar 17;174:39-46. doi: 10.1016/j.ijfoodmicro.2013.12.028. Epub 2014 Jan 4. Authors Antonio Martínez-Abad 1, Jose Maria Lagarón 1, María Jose Ocio 2 Affiliations 1 ...
Get MoreAbstract. melt-compounded polylactide films containing silver-based engineered clays Marı́a A Busolo1,2 and Jose ́ M Lagaron1 This article reports on two polylactide composites obtained by melt compounding containing two silver-based biocide montmorillonites.
Get MoreIn this work, polymeric films of polylactide acid with biosynthetically prepared silver nanoparticles, commercial multiwall carbon nanotubes and organovermiculite with hexadecyltrimethylammonium bromide in various concentrations were prepared to get polylactide composite with antibacterial properties.
Get MoreFilms containing 1.0 and 0.1% silver completely inactivated Salmonella after 5 washings, except the PLA films containing 0.01% silver. In addition, Salmonella counts were reduced by > 6 log CFU when in contact with PLA–THF with 0.01% silver films after 1 washing, but antimicrobial activity was progressively reduced along the subsequent washings.
Get MoreProcessing polylactide as a monolayer film is not recommended. Processing Requirements for Polylactide High Heat Films Polylactide extrusion grade can be converted into a biaxially oriented film at up to 150°C (300°F). PLA resins can be successfully dried using most standard drying systems. In-line drying is required:
Get MoreBiodegradable, Flexible, and Transparent Conducting Silver Nanowires/Polylactide Film with High Performance for Optoelectronic Devices Polymers (Basel). 2020 Mar 6;12(3):604. doi: 10.3390/polym12030604. Authors Junjun Wang 1 ...
Get MoreAntimicrobial biocomposites of melt-compounded polylactide films containing silver-based engineered clays ... This article reports on two polylactide composites obtained by melt compounding ...
Get MoreThe addition of surface-modified cellulose nanocrystals (CNCs) to polymeric matrices can lead to an enhancement of the mechanical and optical properties of host polymers. The use of surfactants can provide an easy and effective way to change the CNC functionality and to evaluate the effects of surface chemistry in the reinforcement mechanisms. In this work, …
Get MoreReduction of the (2013). Evaluation of silver-infused polylactide films for spoilage-related microflora in absorbent pads by silver inactivation of Salmonella and feline calicivirus in vitro and nanotechnology during modified atmosphere packaging of on fresh-cut vegetables.
Get Moreactive packaging containing biocides. Martínez-Abad and colleagues published a study on silver-containing and beeswax coated polylactide films. The thickness of the coating controlled the release rate of silver into the food or food simulant. Bacterial growth was found to be inhibited by this kind of active packaging [13].
Get MoreEvaluation of silver-infused polylactide films for inactivation of Salmonella and feline calicivirus in vitro and on fresh-cut vegetables Int J Food Microbiol. 2013 Mar 1;162(1):89-94. doi: 10.1016/j.ijfoodmicro.2012.12.024. Epub 2013 Jan 7. Authors A Martínez-Abad 1 ...
Get MoreNovel antimicrobial and antiviral silver-containing nanocomposites (PLA-Ag-PEI) based on polylactide (PLA) have been created by the thermochemical reduction of Ag + ions in the polymer films. Structure-properties relationships of nanocomposites were investigated using FTIR, WAXS, TEM, DSC, TGA.
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