Polyamide-6/Poly(lactic acid) Blends Compatibilized by the Maleic Anhydride Grafted Polyethylene-Octene Elastomer

Wang, Yuling; Hu, Xiao; Li, Hai; Ji, Xu; Li, Zhong‐Ming

doi:10.1080/03602559.2010.496418

Cited by 39 publications

(23 citation statements)

References 21 publications

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“…Moreover, attaining high performance properties of the former by the latter is not yet possible. To overcome these limitations, partially degradable polymers have been developed with a negotiation between cost and performance [20][21][22]. Therefore, the investigations concerning the total or partial substitution of synthetic plastics by biodegradable materials have proven to be very useful in solving the problem of plastic waste management to a significant extent [8,14,15,[23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and morphological properties of high density polyethylene and polylactide blends

Madhu

Bhunia

Bajpai

et al. 2014

Journal of Polymer Engineering

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Polyblend films were prepared from high-density polyethylene (HDPE) and poly(l-lactic acid) (PLLA) up to 20% PLLA by the melt blending method in an extrusion mixer with post-extrusion blown film attachment. The 80/20 (HDPE/PLLA) blend was compatibilized with maleic anhydride grafted polyethylene (PE-g-MA) in varying ratios [up to 8 parts per hundred of resin (phr)]. Tensile properties of the films were evaluated to obtain optimized composition for packaging applications of both non-compatibilized and compatibilized blends. The compositions HDPE80 (80% HDPE and 20% PLLA) and HD80C4 (80% HDPE, 20% PLLA and 4 phr compatibilizer) were found to be optimum for packaging applications. However, better tensile strength (at yield) and elongation (at break) of 80/20 (HDPE/PLLA) blend were noticed in the presence of PE-g-MA. Further, thermal properties and morphologies of these blends were evaluated. Differential scanning calorimetry (DSC) study revealed that blending does not much affect the crystalline melting point of HDPE and PLLA, but heat of fusion of 80/20 (HDPE/PLLA) blend was decreased as compared to that of neat HDPE. Spectroscopy studies showed evidence of the introduction of some new groups in the blends and gaining compatibility in the presence of PE-g-MA. The compatibilizer influenced the morphology of the blends, as apparent from scanning electron microscopy (SEM) and supported by Fourier transform infrared (FTIR).

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Section: Introductionmentioning

confidence: 99%

Mechanical and morphological properties of high density polyethylene and polylactide blends

Madhu

Bhunia

Bajpai

et al. 2014

Journal of Polymer Engineering

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“…Anderson and Hillmyer [20] investigated PLLA/PE blends and found that the impact properties of the composites were highly dependent on the dispersed-phase properties. Wang et al [21] studied polyamide 6 (PA6)/PLA/maleic anhydride-grafted poly (orthoester) (POE-g-MAH) blends and found that they were an effective compatibilizer for PA6/ PLA, which improved the impact strength of the blends significantly. Except for biocompatibility and biodegradability, thermoplastic polyolefin is more preponderant in many aspects, such as cost, mechanical properties and processibility, compared with many other biodegradable polymers in modifying PLA.…”

Section: Introductionmentioning

confidence: 98%

Poly(lactic acid)/polypropylene and compatibilized poly(lactic acid)/polypropylene blends prepared by a vane extruder: analysis of the mechanical properties, morphology and thermal behavior

Chen

Zou

Zhang

et al. 2015

Journal of Polymer Engineering

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Poly(lactic acid)/polypropylene and compatibilized poly(lactic acid)/polypropylene blends prepared by a vane extruder: analysis of the mechanical properties, morphology and thermal behavior Abstract: Poly(lactic acid) (PLA)/polypropylene (PP) blends with different weight fractions were prepared by a novel vane extruder. The mechanical properties, morphology, crystallization behavior and thermal stability of the blends were investigated. The tensile strength, flexural strength and elongation at break decreased nonlinearly when the PP content was not more than 50 wt% and then increased with an increase in the PP content. The flexural modulus decreased with increasing PP weight fraction. The PLA/PP 90:10 blend exhibited the optimum impact strength. Scanning electron microscopy measurements revealed that the PLA/PP blends were immiscible. Phase separation occurred significantly at a blend ratio of 50:50. Regarding the PLA/PP 90:10 blend, the mean diameter of the disperse-phase PP particles was the smallest at 1.11 μ m. Differential scanning calorimetry measurements showed that low content of PP enhanced the crystallization of PLA. The PLA component in the blends impeded the crystallization of PP when PP was used as the matrix. The thermogravimetric analysis measurement involved a two-step decomposition process of the blends. The thermal resistance of the blends was improved by compounding with PP. As compatibilizers, both the maleic anhydride-grafted PP and the ethylene/ n -butyl acrylate/ glycidyl methacrylate terpolymer helped improve the mechanical properties, crystallization property and thermal resistance of the PLA/PP blends.

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“…Previously, attempts were made to produce such materials via blending of PLA with polyamide-6 (PA-6) [9][10][11] through the introduction of a compitibilizing copolymer into the blend [12,13] and via blending of PLA with PA-11 and PA-12 [14,15]. Nevertheless, there were no macromolecular reactions between PLA (Bioflex ® ) and PA-6 in [9,10]; that is, the reactive compatibilization did not start, as evidenced by the selective extraction.…”

Section: Introductionmentioning

confidence: 99%

Biodegradable blends obtained via reactive blending of polylactide and polyamide-6

et al. 2016

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Blends of polyamide-6 and polylactide are prepared via reactive compatibilization. Their phase morphologies and compositions are characterized by the methods of IR spectroscopy, optical and scanning electron microscopy, NMR, dynamic mechanical analysis, and continuous extraction in a boiling solvent. It is shown that the formation of hydrogen bonds between polylactide and polyamide-6 substantially improves the compatibility of components. A large proportion of a copolymer is formed as a result of interchain exchange between polyamide-6 and polylactide molecules. The results open new possibilities to produce commercially attractive biodegradable materials with high mechanical and thermophysical characteristics.

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Polyamide-6/Poly(lactic acid) Blends Compatibilized by the Maleic Anhydride Grafted Polyethylene-Octene Elastomer

Cited by 39 publications

References 21 publications

Mechanical and morphological properties of high density polyethylene and polylactide blends

Mechanical and morphological properties of high density polyethylene and polylactide blends

Poly(lactic acid)/polypropylene and compatibilized poly(lactic acid)/polypropylene blends prepared by a vane extruder: analysis of the mechanical properties, morphology and thermal behavior

Biodegradable blends obtained via reactive blending of polylactide and polyamide-6

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