Release of butylated hydroxytoluene (BHT) from Poly(lactic acid) films

Ortiz-Vazquez, Heberto; Shin, Joongmin; Soto‐Valdez, Herlinda; Auras, Rafael

doi:10.1016/j.polymertesting.2011.03.006

Cited by 65 publications

(53 citation statements)

References 34 publications

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“…75% of the initial thymol remained after processing. Active PLA‐based formulations containing butylated hydroxytoluene (BHT) underwent similar losses due to factors such as poor mixing in the extruder, evaporation and thermal degradation of BHT …”

Section: Resultsmentioning

confidence: 99%

Interaction and quantification of thymol in active PLA‐based materials containing natural fibers

Tawakkal

Cran

Bigger

2015

J of Applied Polymer Sci

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The quantification of thymol, a commercial essential oil extract that is an antimicrobial (AM) agent, in poly(lactic acid) (PLA) and PLA/kenaf composites was investigated to explore the potential of these systems as AM food packaging materials. Neat PLA and PLA/kenaf composites containing thymol (5-10 wt%) were prepared via melt blending and compression molding. The quantification of the thymol in PLA and PLA/kenaf composites after processing as well as the interactions between the PLA matrix, kenaf fibres and the AM agent were investigated. The PLA/kenaf composites in the range of 10 to 40 wt% fibre content retained less thymol upon processing than PLA alone and the composites containing the highest fibre loadings demonstrated the lowest thymol retention. The observed losses were attributed to the higher mechanical shear that exists during the mixing process as well as the creation of voids in the composites that facilitate the release of thymol from the system.

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Section: Resultsmentioning

confidence: 99%

Interaction and quantification of thymol in active PLA‐based materials containing natural fibers

Tawakkal

Cran

Bigger

2015

J of Applied Polymer Sci

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“…Ethanol as an aggressive simulant entering in polymer matrix and facilitating the diffusion of antioxidant both via providing more gaps and spaces in polymer matrix and also acting as an extractor for antioxidants. The influence of temperature can be observed in 10% ethanol where no release occurred at 20 C while BHA and PG as low volume molecules released at 40 C. Ortiz-Vazquez et al (2011) reported D values of 0.29 Â 10 À10 and 19.04 Â 10 À10 cm 2 s À1 at 23 and 43 C, respectively, for BHT release from PLA into 95% ethanol. In spite of a difference of one order of magnitude for their D value at 23 C with ours at 20 C (2.97 Â 10 À10 ), our D value at 40 C (24.1 Â 10 À10 ) is similar to their D value at 43 C. D coefficient of BHT was also studied for HDPE and LDPE in contact with food simulants.…”

Section: Antioxidants Release Into 10% Ethanolmentioning

confidence: 95%

Release of synthetic phenolic antioxidants from extruded poly lactic acid (PLA) film

Jamshidian¹,

Tehrany²,

Desobry³

2012

Food Control

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“…BHT is a fat-soluble antioxidant that has found wide application in industry: polymer, fuel, food and pharmaceutical [26]. The melting point of BHT is about 70 o C, solubility in the water 0.611 g/m 3 (at 20-25°C), and its density 1.03 g/cm 3 .…”

Section: Introductionmentioning

confidence: 99%

“…According to Directive 67/548/EWG on the classification of dangerous chemicals, BHT is flammable, toxic and irritant compound. This compound is considered as safe to use if the amount of the antioxidant in food does not exceed 0.02% of the total fats and oils [26]. BHT is also used to improve the stability of pharmaceuticals, fat-soluble vitamins and cosmetics [27].…”

Section: Introductionmentioning

confidence: 99%

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Application Of Numerical Modeling In Quantitative Assessment Of BHT Dispersion In PE-HD Pipes

Musz

Kowalska

2015

Ecological Chemistry and Engineering S

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PE-HD water pipes are exposed to adverse environmental conditions, both during production and their subsequent use in the civil engineering. Several organic compounds migrating into water may lead to deterioration of water quality, especially its taste and odour. Commonly used antioxidant BHT and its products of degradation are leached into water as a result of degradation of the PE-HD pipes material. This paper presents the results of laboratory tests of BHT concentration changes in water circulating in the PE-HD close loop pipe of 30 m length as well as of numerical studies based on data obtained by the laboratory measurements. Numerical calculations were performed using the commercial software Fluent, Ansys Inc., based on the computational fluid dynamics (CFD) principles. The analysis of water samples confirmed the migration of the antioxidant from the pipe material into the water. The results of numerical analysis gave good agreement with the measured values.

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Release of butylated hydroxytoluene (BHT) from Poly(lactic acid) films

Cited by 65 publications

References 34 publications

Interaction and quantification of thymol in active PLA‐based materials containing natural fibers

Interaction and quantification of thymol in active PLA‐based materials containing natural fibers

Release of synthetic phenolic antioxidants from extruded poly lactic acid (PLA) film

Application Of Numerical Modeling In Quantitative Assessment Of BHT Dispersion In PE-HD Pipes

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