Biodegradable trays of thermoplastic starch/poly (lactic acid) coated with beeswax

Reis, Mônica Oliveira; Olivato, Juliana Bonametti; Bilck, Ana Paula; Zanela, Juliano; Grossmann, Maria Victória Eiras; Yamashita, Fábio

doi:10.1016/j.indcrop.2017.12.045

Cited by 60 publications

(56 citation statements)

References 41 publications

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“…The identified compounds have previously been described as substances in beeswax obtained from various countries [15][16][17]. In fabric samples impregnated with beeswax and dried at room temperature, some fine beeswax particles of a few micrometers, in the form of thin flakes of irregular shapes and sizes, are visible on the surface of the fibers (Figures 1b, 2b and 3b).…”

Section: Sem Analysis Of the Distribution Of Beeswax In The Fabric Stmentioning

confidence: 87%

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Beeswax-Modified Textiles: Method of Preparation and Assessment of Antimicrobial Properties

et al. 2020

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In this work, beeswax was used for the first time for finishing polyester/Cotton/Viscose blend fabric and polyester fabric. The aims of the study were: (1) to characterize the composition of beeswax (using Gas Chromatography Mass Spectrometry, GC-MS and 109AgNPET laser desorption/ionization mass spectrometry (LDI MS); (2) to develop a laboratory method for applying beeswax; (3) to assess the antimicrobial activity of beeswax fabrics against bacteria and fungi (AATCC 100–2004 test); and (4) to assess the properties of textiles modified by beeswax. Beeswax was composed of fatty acids, monoacyl esters, glyceride esters and more complex lipids. The bioactivity of modified fabrics was from −0.09 to 1.55. The highest biocidal activity (>1) was obtained for both fabrics against A. niger mold. The beeswax modification process neither affected the morphological structure of the fibers (the wax evenly covered the surface of the fibers) nor their color. The only statistically significant changes observed were in the mechanical properties of the fabrics. The results obtained indicate that modification of fabrics with beeswax may endow them with biocidal properties against molds, which has practical applications, for example, for the prevention of skin mycoses in health and social care facilities.

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Section: Sem Analysis Of the Distribution Of Beeswax In The Fabric Stmentioning

confidence: 87%

“…The identified compounds have previously been described as substances in beeswax obtained from various countries [15][16][17].…”

Section: Analysis Of the Chemical Composition Of Beeswaxmentioning

confidence: 99%

Beeswax-Modified Textiles: Method of Preparation and Assessment of Antimicrobial Properties

et al. 2020

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“…Amylopectin is the major component of starch grain and has a low rate of retrogradation and higher paste and gel clarity compared to amylose. These properties make waxy starches attractive to the food industry, encouraging studies aimed at clarifying the influence of structure on the properties of these starches (REIS et al, 2018;MERCI et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Waxy maize, corn and cassava starch: Thermal degradation kinetics

2019

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O uso de amidos na área de alimentos e materiais requer processamento a temperaturas elevadas. O estudo da cinética de degradação térmica dos amidos e sua relação com o teor de amilose, cristalinidade, viscosidade e propriedades térmicas podem ajudar a projetar as condições de processamento. A cristalinidade e o ordenamento de amidos de milho, mandioca e ceroso foram determinados por difração de raios X (DRX) e espectroscopia no infravermelho por transformada de Fourier (FTIR), respectivamente. Correlação entre cristalinidade, viscosidade e teor de amilose foi encontrada. Os parâmetros cinéticos (energia de ativação (Ea), ordem e fator pré-exponencial (A)) foram determinados através de três modelos: Coats-Redfern, Broido e van Klevelen, utilizando o método de melhor ajuste linear. A ordem global do processo de degradação térmica de todos os amidos foi determinada como de primeira ordem. O valor da Ea aumenta seguindo a ordem: milho < mandioca < milho ceroso. Os maiores valores de A e Ea encontrados para o amido ceroso indicam que as diferenças estruturais influenciam o processo de degradação térmica.

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“…A thorough review is provided in [7]. The most common components to blend with starch are the aliphatic bio-polyesters such as PLA, PCL, and PHA [33]. The resultant material achieves improved properties and cost competitiveness.…”

Section: Blendingmentioning

confidence: 99%

“…Such composites are also commonly known as "green composites," and as the focus in this chapter is sustainability, the use of natural fibers as fillers will be the only class investigated [34]. Several researchers have demonstrated a high compatibility between starch-and natural-based fibers such as cellulose derivatives [2,14,16,18,28,29,33]. Considerable improvement in the mechanical properties of starch-based composites coupled with a reduction in water permeability has been reported.…”

Section: Biodegradable Starch-based Compositesmentioning

confidence: 99%

Design for Sustainability with Biodegradable Composites

Fouad¹,

Farag²

2020

Design and Manufacturing

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Many of the petroleum-based materials and products are causing problems with sustainability of resources and disposal at the end of their lives. Such problems can be solved if biodegradable materials from renewable resources are used in product design. For a material to be fully biodegradable, all its constituents must be biodegradable and should come from renewable resources if it is to be sustainable. Starchplant fiber composites satisfy both conditions. In addition to their environmental benefits, materials from renewable resources can also be economically advantageous in certain applications, such as motorcar and packaging industries. This chapter starts with a review of the characteristics of biodegradable materials and uses case studies to illustrate their use in the design of sustainable products. The concept of design for a life (DFL), in which the material used in making a given product that will biodegrade at the end of its useful life, will also be explored.

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Biodegradable trays of thermoplastic starch/poly (lactic acid) coated with beeswax

Cited by 60 publications

References 41 publications

Beeswax-Modified Textiles: Method of Preparation and Assessment of Antimicrobial Properties

Beeswax-Modified Textiles: Method of Preparation and Assessment of Antimicrobial Properties

Waxy maize, corn and cassava starch: Thermal degradation kinetics

Design for Sustainability with Biodegradable Composites

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