Environmentally degradable starch filled low density polyethylene

Shah, Piyush B.; Bandopadhyay, Sukumar; Bellare, Jayesh

doi:10.1016/0141-3910(94)00088-p

Cited by 75 publications

(39 citation statements)

References 6 publications

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“…Besides, the addition of antioxidants and stabilizers during their manufacture keeps these materials from atmospheric oxidation. Other structural characteristics such as high molecular weight, high packing density and low surface area make polyolefins non susceptible to biodegradation [4][5][6][7] . There is no single definition of biodegradation.…”

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%

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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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Section: Introductionmentioning

confidence: 99%

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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“…The different types of starch were supplied by Corn Products of Brazil (Table 1). Few works used modified starches to obtain films from polyethylene blends with starch (Shah, Bandopadhyay and Bellare, 1995;Zuchowska et al 1998;Thakore et al 2001;Rodríguez-Gonzalez et al 2003). The amphoteric starch with the N + and P -ions and the starch Fox 5814 with cation N + were chosen.…”

Section: Polymermentioning

confidence: 99%

Evaluation of the types of starch for preparation of LDPE/starch blends

Vinhas

Lima

Santos

et al. 2007

Braz. arch. biol. technol.

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“…In this scenario, studies have been conducted in order to develop, at least, partially biodegradable plastics by blending the fossil-fuel-based conventional polymers with biodegradable polymers, such as starch or cellulose. There are evidences that the degradability of LDPE has been improved when native starch or thermoplastic starch is added to it, although the pure LDPE is not biodegradable [1][2][3][4] . Poly (3-hydroxybutyrate) (PHB) is aliphatic polyester produced by several microorganisms that presents very good mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

“…This polymer has good properties, such as: high flexibility, good processability, excellent resistance to dilute and concentrated acids, alcohols, bases and esters, impact resistance and dimensional stability. However, the use of this polymer causes serious environmental concerns because it is a bioinert polymer, which means that it is highly resistant to assimilation by microorganisms, such as fungi and bacteria [1,2] .…”

Section: Introductionmentioning

confidence: 99%

Low Density Polyethylene (LDPE) blends based on Poly(3-Hydroxi-Butyrate) (PHB) and Guar Gum (GG) biodegradable polymers

Rocha

Moraes

2015

Polímeros

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SbstractLDPE blends based on PHB and GG biodegradable polymers were prepared by melt mixing in a twin screw extruder. The mechanical properties of the materials were evaluated. Preliminary information about the biodegradation behavior of the specimens was obtained by visual observation of samples removed from the simulated soil in 90 days. The results indicated that LDPE/PHB blends may be used for designing LDPE based materials with increased susceptibility to degradation, if elongation at break and impact properties are not determinant factors of their performance. LDPE based materials on GG present values of flexural and mechanical strength lower than those of LDPE/PHB blends. LDPE/PHB/GG blends exhibit unsatisfactory properties. Apparently, the effect of addition of GG to LDPE on the biodegradation behavior of LDPE/GG blends was less intense than the effect caused by addition of PHB to the blends. Similar observation has occurred with the partial replacement of GG by PHB in the ternary blends.

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Environmentally degradable starch filled low density polyethylene

Cited by 75 publications

References 6 publications

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

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

Evaluation of the types of starch for preparation of LDPE/starch blends

Low Density Polyethylene (LDPE) blends based on Poly(3-Hydroxi-Butyrate) (PHB) and Guar Gum (GG) biodegradable polymers

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