Thermal analysis of soil-buried oxo-biodegradable polyethylene based blends

Martelli, Sílvia Maria; Fernandes, Elizabeth Grillo; Chiellini, Emo

doi:10.1007/s10973-009-0355-2

Cited by 21 publications

(30 citation statements)

References 13 publications

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“…In this scenario, numerous studies have been conducted in order to: (1) Enhance the biodegradability of fossil-fuel-based conventional polymers by blending them with biodegradable natural polymers such as starch or cellulose; (2) Mixing with pro-oxidants so that they are more easily degraded; and (3) Isolate and improve microorganisms that can efficiently degrade these polymers [1][2][3][4] . Polyolefins are considered bioinert polymers which mean that they are highly resistant to assimilation by microorganisms such as fungi and bacteria.…”

Section: Introductionmentioning

confidence: 99%

“…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%

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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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“…Therefore, the addition of PHB to conventional thermoplastics can be used to reduce the huge amount of packaging wastes in landfills [5][6][7][8][9][10][11][12][13] . There are few papers published concerning the biodegradation properties of the LDPE/PHB blends.…”

Section: Introductionmentioning

confidence: 99%

“…There are few papers published concerning the biodegradation properties of the LDPE/PHB blends. According to Martelli et al [5] , the literature for this type of blend is very modest mainly regarding blends of polyethylene/PHB without pro-oxidants.…”

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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“…One of such methods of modifying high-molecular compounds consists in preparing polymer blends [1][2][3][4][5][6][7][8][9][10][11]. The properties of elastomeric materials obtained by non-conventional cross-linking elastomer blends have been examined for a long time at the Technical University of Łódź [1].…”

Section: Introductionmentioning

confidence: 99%

Thermal properties and combustibility of cross-linked XNBR/CSM blends

Janowska

Kucharska-Jastrząbek

Rzymski

et al. 2011

J Therm Anal Calorim

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The article describes the measurements results of the thermal properties of cross-linked blends of butadiene-acrylonitrile rubber (XNBR, Krynac X.7.50) and chlorosulfonated polyethylene containing different quantity of combined chlorine (CSM24-Hypalon 48, CSM29-Hypalon 20, CSM35-Hypalon 40, and CSM43-Hypalon 30) under inert gas (DSC) and in air (derivatography). The blends were non-conventionally cross linked at a temperature of 150°C by means of MgO in the presence of stearic acid. The thermal curves obtained were interpreted from the point of view of phase transitions and chemical reactions of the macromolecular components used. It has been found that the elastomers investigated show a good compatibility brought about by the formation of both interpolymeric covalent bonds and interpolymeric and intrapolymeric ionic bridges, which play the role of a chemical compatibilizer. The results of the examinations performed show that the non-conventional cross-linked XNBR/CSM blends prove very good mechanical properties and are self-extinguished in air. Their flammability defined with the value of OI and combustion time in air clearly depends on the type of CSM.

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Thermal analysis of soil-buried oxo-biodegradable polyethylene based blends

Cited by 21 publications

References 13 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

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

Thermal properties and combustibility of cross-linked XNBR/CSM blends

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