Effect of Processing Conditions on Properties of Poly(lactic acid) and Poly(butylene succinate) Blend Fibers

Transcription

1 Effect of Processing Conditions on Properties of Poly(lactic acid) and Poly(butylene succinate) Blend Fibers 1 1* o-charoen1@hotmail.com* Lalita Jompang 1 Narongchai Ocharoen 1* Natee Srisawat 2 Supaphorn Thumsorn 2 1 Department of Materials and Metallurgicall Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi, Pathumthani 12110, Thailand 2 Department of Textile Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi, Pathumthani 12110, Thailand o-charoen1@hotmail.com* PLA PBS PBS wt% PLA/PBS 50, m/min PLA/PBS PLA/PBS PLA PBS PLA/PBS PLA/PBS PBS 30 wt% 150 m/min Abstract Poly(lactic acid) (PLA) and poly(butylene succinate) (PBS) blend were compounded in a twin screw extruder at PBS contents of wt%. PLA/PBS blend fibers were fabricated using melt spinning technique with varied winding speed of 50, 100 and 150 m/min. The effects of blend ratios and wining speed on properties of the PLA/PBS blend fibers were investigated. From the results, crystallinity of PLA in the fiber decreased with increasing PBS contents. Therefore, shrinkage of the blend fibers decreased while tenacity and elongation of the PLA/PBS blends fibers increased. It can be noted that the maximum tenacity of the PLA/PBS blend fiber was found at PBS contents of 30 wt% at winding speed of 150 m/min. Keywords: shrinkage, crystallinity, polymer blend, fiber, winding speed

2 1. (PLA) (PBS) (PHA) PLA PBS PLA PBS PLA PBS [1-2] [3-4] 2007 Bhatia [1] PLA PBS PLA PBA PBS PLA PBS Yokohara Yamaguchi [2] PLA PBS (immiscible blend) PLA/PBS 80/20 PBS PLA PLA PBS (melt spinning) PLA PLA (continuous filament) PLA PBS 200 ºC PLA PBS PLA/PBS PLA 3052D (NatureWorks, LLC, USA.) (MFR) 14 g/10 min - PBS FZ91PD (MFR) 6 g/10 min 2.2 PLA:PBS 100:0, 90:10, 80:20, 70:30, 60:40, 50:50 0:100 wt% PLA/PBS (melt spinning) Lab scale bicomponent extruder fed spinning machine 80 ºC ºC 50, m/min

3 ºC Rheometer Gemini 200HR nano - Differential scanning calorimeter (DSC) ºC 10 ºC /min - Instron universal testing machine ASTM D (Fiber Shrinkage Testing) boiling shrinkage ASTM D PLA PBS 1 (T m ) PLA ºC T m PBS PBS PLA/PBS ºC 2 T m PLA PBS PBS PLA PBS (immiscible blend) (Pseudoplastic flow) [5] PLA PBS PLA PBS PBS PLA/PBS 1 PLA, PBS 230 ºC 1 PLA PLA PBS PLA:PBS % crystallinity of T ratio m ( C) H (J/g) PLA 100:0 (PLA) : : : : : PBS PLA PBS PLA:PBS % crystallinity of T ratio m ( C) H(J/g) PBS 90: : : : : :100 (PBS) Heat of fusion ( H) (Crystallinity) [6] crystallinity PLA PBS 1 2 PLA PBS PBS

4 PBS PLA (tenacity) PLA/PBS 50, mmin tenacity PLA, PBS PLA/PBS tenacity PBS PLA tenacity PLA/PBS PBS 2 PBS Fambri [7] tenacity PLA/PBS PBS 30 wt% 3 (Elongation) PLA, PBS PLA PBS PLA, PBS PLA/PBS 4 PLA PLA PLA PBS PBS [8] PBS PLA/PBS 2 (Tenacity) PLA, PBS PLA PBS 3 (Elongation) 3 PBS PLA PLA/PBS PBS 4 (%shrinkage) PLA PBS 4. PLA/PBS PBS PLA/PBS

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