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    Synergistic toughening and compatibilisation effect of Poly(butylene succinate) in PLA/poly-caprolactone blends

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    Publication date
    2019-03
    Author
    Kassos, Nikolaos
    Kelly, Adrian L.
    Gough, Timothy D.
    Gill, A.A.
    Keyword
    Polylactic acid
    Toughness
    Blends
    Bioplastics
    Biodegradable
    Mechanical properties
    Rheology
    Phase separation
    Rights
    This is an author-created, un-copyedited version of an article accepted for publication/published in Materials Research Express. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.1088/2053-1591/aaf7c1
    Peer-Reviewed
    Yes
    
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    Abstract
    Binary and ternary blends of a polylactic acid matrix with polycaprolactone (PCL) and polybutylene succinate (PBS) were produced by twin screw extrusion, containing up to 30 wt% loading. Mechanical, thermal and rheological characterisation techniques were used to quantify properties of the different blend formulations and miscibility was investigated using scanning electron microscopy. PCL is known to act as an impact modifier in PLA but to cause a corresponding reduction in strength. Results showed that addition of both PBS and PCL seperatly caused a reduction in melt viscosity, elastic modulus and tensile strength, but an increase in impact strength and strain at break. Analysis of morphology suggested that immiscibility was evident, particularly at higher PCL and PBS loadings. Results indicated that incorporation of a small loading of PBS had a synergistic effect on the PLA-PCL blend properties. Miscibility was improved and enhanced mechanical properties were observed for a ternary blend containing 5 wt% of both PBS and PCL compared to blends containing 10% of each polymer alone.
    URI
    http://hdl.handle.net/10454/16750
    Version
    Accepted manuscript
    Citation
    Kassos N, Kelly AL, Gough T et al (2019) Synergistic toughening and compatibilisation effect of Poly(butylene succinate) in PLA/poly-caprolactone blends. Materials Research Express. 6(3): 035313
    Link to publisher’s version
    https://doi.org/10.1088/2053-1591/aaf7c1
    Type
    Article
    Collections
    Engineering and Informatics Publications

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