Rheology of poly(lactic acid)/poly(trimethylene terephthalate) blends compatibilized by clay or maleic anhydride-grafted poly(ethylene-octene) elastomer

doi:10.1515/polyeng-2018-0256

淡江大學機構典藏 > 工學院 > 化學工程與材料工程學系暨研究所 > 期刊論文 > Item 987654321/116000

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題名:	Rheology of poly(lactic acid)/poly(trimethylene terephthalate) blends compatibilized by clay or maleic anhydride-grafted poly(ethylene-octene) elastomer
作者:	Lin, Gwo-Geng;Song, Yi-Hu;Huang, Chao-Tsai;Sipos, Marek;Tu, Zhaokang
關鍵詞:	compatibilization;mPOE;organoclay;PLA/PTT blend;rheology
日期:	2019-01-12
上傳時間:	2019-03-16 12:11:06 (UTC+8)
摘要:	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.
關聯:	Journal of Polymer Engineering 39(3), p.248-253
DOI:	10.1515/polyeng-2018-0256
顯示於類別:	[化學工程與材料工程學系暨研究所] 期刊論文

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