Transparent and ductile poly(lactic acid)/poly(butyl acrylate) (PBA) blends: Structure and properties

Meng, Bing; Deng, Jingjing; Liu, Qing; Wu, Zhihua; Yang, Wei

doi:10.1016/j.eurpolymj.2011.10.009

Cited by 125 publications

(81 citation statements)

References 41 publications

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“…where DH o m is the enthalpy for a theoretical 100% crystalline polymer (146 JÁg À1 [3] and 93 JÁg À1 [10] for PHA and PLA, respectively). DH m is the measured enthalpy of fusion.…”

Section: Differential Scanning Calorimetrymentioning

confidence: 99%

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Thermal Characterization of Polyhydroxyalkanoates and Poly(lactic acid) Blends Obtained by Injection Molding

Loureiro

Ghosh

Viana

et al. 2014

Polymer-Plastics Technology and Engineering

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In this work we present the thermal characterization of the full scope of polyhydroxyalcanoate and poly(lactic acid) blends obtain by injection molding. Blends of polyhydroxyalcanoate and poly(lactic acid) (PHA/PLA) were prepared in different compositions ranging from 0-100% in steps of 10%. The blends were injection molded and then characterized by differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and wide angle X-ray diffraction (WAXD). The increment of PHA fraction increased the degree of crystallinity of the blend and the miscibility of the base polymers as verified by the Fox model. The WAXD analysis indicates that the presence of PHA hindered the PLA crystallization. The crystallization evolution trough PHA weight fraction (wf) shows a phase inversion around 50-60%. SEM analyses confirmed that the miscibility of PHA/PLA blends increased with the incorporation of PHA and became total for values of PHA higher that 50%.

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“…where DH o m is the enthalpy for a theoretical 100% crystalline polymer (146 JÁg À1 [3] and 93 JÁg À1 [10] for PHA and PLA, respectively). DH m is the measured enthalpy of fusion.…”

Section: Differential Scanning Calorimetrymentioning

confidence: 99%

“…PLA has been blended with other polymers in order to obtain better mechanical properties and=or cost reduction. For instance, studies have been made on blends of PLA with poly(e-caprolactone), PCL [2] , poly(butylacrylate), PBA [3] , and acrylonitrile butadiene styrene, ABS [4] .…”

Section: Introductionmentioning

confidence: 99%

Thermal Characterization of Polyhydroxyalkanoates and Poly(lactic acid) Blends Obtained by Injection Molding

Loureiro

Ghosh

Viana

et al. 2014

Polymer-Plastics Technology and Engineering

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“…the network continues to lose mass), the network’s toughness begins to decrease as more of the PBAE departs from the system and the network transitions to a more glassy, brittle state. Comparatively, these PBAE-MMA networks have toughness similar to the initial toughness of nondegradable crosslinked acrylic polymers, 0.14 to 50 MJ/m 3 , crosslinked polyurethanes, 50.2 MJ/m 3 , swollen chitosan-PVA hydrogels, 1.76 MJ/m 3 , and PLA, 2.13 MJ/m 3 [22, 39–43]. To the authors’ knowledge, there are few comparable studies of degradable polymers that examine the toughness of degradable polymers over the degradation time course.…”

Section: Discussionmentioning

confidence: 99%

Semi-degradable poly(β-amino ester) networks with temporally controlled enhancement of mechanical properties

et al. 2014

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Biodegradable polymers are clinically used in numerous biomedical applications, and classically show a loss in mechanical properties within weeks of implantation. This work demonstrates a new class of semi-degradable polymers that show an increase in mechanical properties through degradation via a controlled shift in a thermal transition. Semi-degradable polymer networks, poly(β-amino ester)-co-methyl methacrylate, were formed from a low glass transition temperature crosslinker, poly(β-amino ester), and high glass transition temperature monomer, methyl methacrylate, which degraded in a manner dependent upon the crosslinker chemical structure. In vitro and in vivo degradation revealed changes in mechanical behavior due to the degradation of the crosslinker from the polymer network. This novel polymer system demonstrates a strategy to temporally control the mechanical behavior of polymers and to enhance the initial performance of smart biomedical devices.

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“…Figures 6a-d depicts nonspherical particles of SBS dispersed in the PLA matrix, indicating excellent interfacial adhesion. As the SBS content increased, the dispersed SBS phase exhibited an elongated structure, which can be attributed to the interfacial tension between the hydrophilic polymer and the hydrophobic polymer [28] . When the SBS content exceeded 50 wt.%, a bicontinuous structure formed, indicating that the two phases in the blend were immiscible but compatible because of the n-π interaction.…”

Section: Morphologymentioning

confidence: 98%

Enhancing the PLA Crystallization Rate and Mechanical Properties by Melt Blending with Poly(styrene-butadiene-styrene) Copolymer

Wang

Chen

2015

Polymer-Plastics Technology and Engineering

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Poly(styrene-butadiene-styrene) (SBS) copolymer was used to enhance the crystallization ability and mechanical properties of poly(L-lactic acid) (PLA) through melt mixing. The thermogravimetric analysis and Fourier transform infrared results revealed the n-π interaction between PLA and SBS. Differential scanning calorimetry and X-ray diffraction analysis indicated that the crystallization ability of the PLA improved substantially. The PLA crystallized completely during the cooling process when the SBS content in the blend was above 20 wt.%. The elongation at break and the impact resistance were significantly improved compared with that of neat PLA when the SBS content was above 50 wt.%.

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Transparent and ductile poly(lactic acid)/poly(butyl acrylate) (PBA) blends: Structure and properties

Cited by 125 publications

References 41 publications

Thermal Characterization of Polyhydroxyalkanoates and Poly(lactic acid) Blends Obtained by Injection Molding

Thermal Characterization of Polyhydroxyalkanoates and Poly(lactic acid) Blends Obtained by Injection Molding

Semi-degradable poly(β-amino ester) networks with temporally controlled enhancement of mechanical properties

Enhancing the PLA Crystallization Rate and Mechanical Properties by Melt Blending with Poly(styrene-butadiene-styrene) Copolymer

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