A study on properties of PLA/PBAT from blown film process

2015 Global Conference on Polymer and Composite Materials

材料科学;化学

Hongdilokkul, P.^1 ; Keeratipinit, K.^1 ; Chawthai, S.^1 ; Hararak, B.^2 ; Seadan, M.^3 ; Suttiruengwong, S.^1

Department of Materials Science and Engineering, Faculty of Engineering and Industrial Technology, Silpakorn University, Sanamchandra Palace Campus, Nakhon Pathom

73000, Thailand^1

National Metal and Material Technology Center (MTEC), National Science and Technology Development Agency, Pathum Thani

12120, Thailand^2

Department of Physics, Faculty of Science, Silpakorn University, Nakhon Pathom

73000, Thailand^3

关键词: Film characteristics;    Interface adhesion;    Optical transparent;    Reactive compounding;    Rheological property;    Temperature profiles;    Toughness properties;    Twin screw extruders;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/87/1/012112/pdf
DOI  :  10.1088/1757-899X/87/1/012112

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The aim of this work was to study the properties of films based on PLA/PBAT blend prepared by the reactive compounding. PLA/PBAT blends were prepared at the weight ratio of 80:20 together with peroxide as a reactive agent in a twin screw extruder with temperature profile of 160/170/180/210/220/190/175/150°C from feed to die zone. All blended samples, neat PLA, and neat PBAT were characterized for morphology, mechanical and rheological properties. SEM micrographs showed finely dispersed phases of PBAT in PLA in all cases. The particle sizes of PBAT were around 1 μm. The results indicated that the drawability and toughness properties of PLA were greatly improved when blended with 20%wt PBAT. The interface adhesion, and mechanical properties of PLA/PBAT blends were also improved when adding a very small quantity of peroxide. PLA/PBAT blends were then used to produce films. The film characteristics and mechanical properties were examined. Tensile strength of films was significantly improved in the machine direction in PLA/PBAT/peroxide blends whereas the good optical transparent property were remained the same compared with neat PLA.