Biodegradable films made from low-density polyethylene (LDPE), rice starch and potato starch for food packaging applications: Part 1

Psomiadou, Eleni; Arvanitoyannis, Ioannis S.; Βiliaderis, Costas G.; Ogawa, Hiroyasu; Kawasaki, Norioki

doi:10.1016/s0144-8617(98)00016-2

Cited by 239 publications

(133 citation statements)

References 40 publications

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“…• due to the change in coordinate property of PHB molecules when blended with starch [29]. Further, we also found from Fig.…”

Section: Xrd Analysissupporting

confidence: 65%

Performance of an acrylic-acid-grafted poly(3-hydroxybutyric acid)/starch bio-blend: characterization and physical properties

Liao

2007

Designed Monomers and Polymers

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Abstract-In this study, a fully biodegradable poly(3-hydroxybutyric acid) (PHB) and starch blend (PHB/starch) was prepared by means of a melt-blending method. In addition, the acrylic-acid-grafted PHB (PHB-g-AA) was studied as an alternative to PHB. It was found that the dispersion of starch in the polymer matrix and the water resistance of PHB-g-AA/starch were better those of PHB/starch, due to the formation of ester carbonyl function group via reaction between the -OH group of starch and the anhydride carbonyl group of PHB-g-AA. As the result of mechanical test, the PHB-g-AA/starch blends not only gave larger values of tensile strength than those of the PHB/starch blends, but also provided a plateau value of tensile strength when the starch content was up to 50 wt%. Furthermore, the PHB-g-AA/starch was more easily processed than the PHB/starch because the former had lower melt viscosity than the latter. Biodegradation tests of blends were also studied under the enzymatic environment, and the result showed that the mass of blends reduced by about the starch content within 6 weeks.

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“…• due to the change in coordinate property of PHB molecules when blended with starch [29]. Further, we also found from Fig.…”

Section: Xrd Analysissupporting

confidence: 65%

Performance of an acrylic-acid-grafted poly(3-hydroxybutyric acid)/starch bio-blend: characterization and physical properties

Liao

2007

Designed Monomers and Polymers

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“…. Biodegradable polymers, such as starch and poly (3-hydroxybutirate) (PHB) also have been used as degradable fillers in polyethylene based materials 8,9,13 . Incorporation of starch in LDPE was previously reported to impart biodegradability to LDPE/starch blends and resulted in commercial application of LDPE/starch blend (90/10) which was reported as being biodegradable.…”

Section: Introductionmentioning

confidence: 99%

“…The blending of biodegradable polymers, such as starch and bioinert polymers, has received a considerable attention for possible applications in the waste disposal of plastics 7,13,[22][23][24][25][26] . In the case of PHB based blends containing a bioinert polymer, a kind of biodeterioration may occur according to the morphology and surface properties of the samples.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and morphological properties of LDPE/ PHB blends filled with castor oil pressed cake

Burlein

Rocha

2013

Mat. Res.

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Blends of PHB and LDPE were prepared by melt mixing in a twin screw extruder. Castor oil cake (CC) was used as filler for the blends. The design of experiments (DOE) technique was used to evaluate the effect of the components proportion on the materials properties. The mechanical properties and morphology of the materials were evaluated. The LDPE Young's modulus increases but the other tensile properties and impact resistance deteriorate with the addition of PHB or CC. The tensile strength values of binary mixtures of LDPE lie in the range from 8.9 to 10 MPa. As some commercial grades of LDPE have mechanical strength in this range, it may be inferred that the addition of a certain amount of PHB or CC to LDPE may be considered as a possibility for obtaining LDPE based materials with increased susceptibility to biodegradation. The poor interfacial adhesion between the phases became visible in all samples.

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“…O amido é adicionado como aditivo, sendo degradado facilmente por microrganismos, provocando a degradação parcial da matriz 28 . Amido de batata adicionado a filmes de polietileno de baixa densidade (PEBD) melhorou a biodegradabilidade destes filmes 29 . A adição de amido a resinas de isocianatos reduziu o custo de produção e melhorou sua resistência à solventes 21 .…”

Section: Polissacarídeosunclassified

Polímeros biodegradáveis - uma solução parcial para diminuir a quantidade dos resíduos plásticos

Franchetti¹,

Marconato²

2006

Quím. Nova

107

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Recebido em 13/12/04; aceito em 21/10/05; publicado na web em 24/3/06 BIODEGRADABLE POLYMERS -A PARTIAL WAY FOR DECREASING THE AMOUNT OF PLASTIC WASTE. The large use of plastics has generated a waste deposit problem. Today plastic wastes represent 20% in volume of the total waste in the municipal landfills. To solve the disposal problem of plastics methods have been employed such as incineration, recycling, landfill disposal, biodegradation and the use of biodegradable polymers. Incineration of plastic wastes provokes pollution due to the production of poisonous gases. Recycling is important to reduce final costs of plastic materials, but is not enough in face of the amount of discarded plastic. In landfills plastic wastes remain undegraded for a long time, causing space and pollution problems. Biodegradation is a feasible method to treat some plastics, but intensive research is necessary to find conditions for the action of microorganisms. All of these methods are important and the practical application of each one depends on the type and amount of the plastic wastes and the environmental conditions. Therefore, a great deal of research has focused on developing biodegradable plastics and its application because it is an important way for minimizing the effect of the large volume of plastic waste discarded in the world.Keywords: biodegradable polymers; plastic waste; biodegradation. INTRODUÇÃOAté pouco tempo atrás era importante descobrir materiais cada vez mais duráveis para utilização diária no mercado e dentre estes estavam os plásticos, com grande variedade de aplicações, devido a suas propriedades, versatilidade de uso e preço 1 . Como o uso dos plásticos vem aumentando muito no mundo todo (mais de 100 milhões de t/ano de plásticos produzidos) 2 , conseqüentemente é grande a quantidade de resíduos plásticos descartados no meio ambiente, isto é, 20% do volume total [3][4][5] . Os plásticos sintéticos, materiais formados de macromoléculas, denominados polímeros (do grego: polimuitos, meros-partes, unidades), são muito resistentes à degradação natural, quando descartados no meio ambiente, isto é, em aterros ou lixões municipais, daí seu acúmulo cada vez mais crescente 6,7 . Os plásticos mais utilizados na vida diária, desde 1940, têm sido polietileno (PE), polipropileno (PP), poliestireno (PS), poli(tereftalato de etileno) (PET) e poli(cloreto de vinila) (PVC) que, apesar do avanço no processamento e fabricação, geram dois grandes problemas: o uso de fonte não-renovável (como o petróleo) para obtenção de sua matéria-prima e a grande quantidade de resíduos gerada para descarte 10 . Além disso, é sabido que muitos plásticos exigem mais de 100 anos para degradação total, tendo em vista que sua alta massa molar média e hidrofobicidade dificultam a ação dos microrganismos e de suas enzimas na superfície do polímero 11,12 . Para tratar de tanto resíduo plástico tem sido empregadas, usualmente, quatro tipos de estratégias: IncineraçãoEste processo apresenta a vantagem de diminuir rapidamente o volume de material des...

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Biodegradable films made from low-density polyethylene (LDPE), rice starch and potato starch for food packaging applications: Part 1

Cited by 239 publications

References 40 publications

Performance of an acrylic-acid-grafted poly(3-hydroxybutyric acid)/starch bio-blend: characterization and physical properties

Performance of an acrylic-acid-grafted poly(3-hydroxybutyric acid)/starch bio-blend: characterization and physical properties

Mechanical and morphological properties of LDPE/ PHB blends filled with castor oil pressed cake

Polímeros biodegradáveis - uma solução parcial para diminuir a quantidade dos resíduos plásticos

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