淡江大學機構典藏:Item 987654321/116000
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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/116000


    Title: Rheology of poly(lactic acid)/poly(trimethylene terephthalate) blends compatibilized by clay or maleic anhydride-grafted poly(ethylene-octene) elastomer
    Authors: Lin, Gwo-Geng;Song, Yi-Hu;Huang, Chao-Tsai;Sipos, Marek;Tu, Zhaokang
    Keywords: compatibilization;mPOE;organoclay;PLA/PTT blend;rheology
    Date: 2019-01-12
    Issue Date: 2019-03-16 12:11:06 (UTC+8)
    Abstract: Blends of two biobased polymers, poly(lactic acid) and poly(trimethylene terephthalate) (PTT), were compatibilized with either maleic anhydride-grafted poly(ethylene-octene) (mPOE) or organically modified clay (Cloisite 30B). Dynamic rheological measurements revealed that the mPOE inclusion resulted in a four-fold increase in viscosity relative to the noncompatibilized blends. By loading 3 wt% Cloisite 30B, the storage moduli of the blends showed a distinct solid-like behavior and high complex viscosity in the low-frequency region, which can be interpreted by the reduced sizes of the PTT phase evidenced from the scanning electron microscopy (SEM) micrography. A temperature sweep of the viscosity of the blends starting from 180°C revealed that the existence of an unmelted PTT dispersed phase might impede the decline in viscosity with increasing temperature near the melting point of PTT. The introduced compatibilizers can restrict the temperature-dependent morphology evolution, and the use of the 3 wt% 30B clay can prohibit the morphology evolution during the temperature sweep.
    Relation: Journal of Polymer Engineering 39(3), p.248-253
    DOI: 10.1515/polyeng-2018-0256
    Appears in Collections:[Graduate Institute & Department of Chemical and Materials Engineering] Journal Article

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