Thermal properties of extruded/injection-molded poly(lactic acid) and biobased composites

2007 ◽  
Vol 107 (2) ◽  
pp. 898-908 ◽  
Author(s):  
Abdellatif A. Mohamed ◽  
V. L. Finkenstadt ◽  
D. E. Palmquist
Keyword(s):  
Lactic Acid ◽  
Thermal Properties ◽  
Poly Lactic Acid ◽  
Injection Molded

Thermal properties of extruded and injection-molded poly(lactic acid)-based cuphea and lesquerella bio-composites

2009 ◽  
Vol 111 (1) ◽  
pp. 114-124 ◽  
Author(s):  
Abdellatif Mohamed ◽  
V. L. Finkenstadt ◽  
P. Rayas-Duarte ◽  
Palmquist Debra E ◽  
Sherald H. Gordon
Keyword(s):  
Lactic Acid ◽  
Thermal Properties ◽  
Poly Lactic Acid ◽  
Injection Molded

Effects of Processing Parameters and Nanofillers on Mechanical and Thermal Properties and Morphology of Impact Modified Poly (lactic acid)

2013 ◽  
Vol 1499 ◽  
Author(s):  
Eda Acik ◽  
Ulku Yilmazer
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Thermal Properties ◽  
Impact Strength ◽  
Random Copolymer ◽  
Processing Parameters ◽  
Poly Lactic Acid ◽  
Mechanical And Thermal Properties ◽  
Injection Molded ◽  
The Impact

ABSTRACTTernary nanocomposites of poly (lactic acid) (PLA) were produced by melt blending with two types of elastomers and five types of organoclays to obtain improved mechanical properties such as tensile strength, modulus and impact strength. One of the elastomers is a random copolymer of ethylene and glycidyl methacrylate (E-GMA) and the other one is a random terpolymer of ethylene-butyl acrylate-maleic anhydride (E-BA-MAH). Organically modified montmorillonites (OMMT) were utilized as nanofillers. XRD, DSC, tensile and impact tests were done on the injection molded samples. FTIR, SEM and TEM analyses are still in progress. As preliminary results, thermal analysis showed that the addition of compatibilizers and organoclays does not have a distinct effect on the thermal properties of the composites, and no evidence of nucleation activity of compatibilizers or organoclays was found. For all types of organoclays, the nanocomposites produced with E-GMA exhibited better mechanical properties in comparison to nanocomposites containing E-BA-MAH, especially for the impact strength.

The mechanical/thermal properties of microcellular injection-molded poly-lactic-acid nanocomposites

2008 ◽  
Vol 30 (11) ◽  
pp. 1625-1630 ◽  
Author(s):  
Shyh-Shin Hwang ◽  
Peming P. Hsu ◽  
Jui-Ming Yeh ◽  
Kung-Chin Chang ◽  
Ying-Zhong Lai
Keyword(s):  
Lactic Acid ◽  
Thermal Properties ◽  
Poly Lactic Acid ◽  
Injection Molded

Influence of extrusion screw speed on the properties of halloysite nanotube impregnated polylactic acid nanocomposites

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Chaitra Venkatesh ◽  
Yuanyuan Chen ◽  
Zhi Cao ◽  
Shane Brennan ◽  
Ian Major ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Thermal Properties ◽  
Composite Films ◽  
Polymer Melt ◽  
Poly Lactic Acid ◽  
Mechanical And Thermal Properties ◽  
Screw Speed ◽  
Halloysite Nanotube ◽  
The Past

Abstract Poly (lactic acid)/halloysite nanotube (PLA/HNT) nanocomposites have been studied extensively over the past few years owing to the interesting properties of the polymer, PLA, and the nanoclay, HNT, individually and as composites. In this paper, the influence of the screw speed during extrusion was investigated and was found to have a significant impact on the mechanical and thermal performance of the extruded PLA/HNT nanocomposites. To determine the effect of screw speed on PLA/HNT nanocomposites, 5 and 10 wt% of HNTs were blended into the PLA matrix through compounding at screw speeds of 40, 80, and 140 rpm. Virgin PLA was compounded for comparison. The resultant polymer melt was quench cooled onto a calendar system to produce composite films which were assessed for mechanical, thermal, chemical, and surface properties. Results illustrate that in comparison to 40 and 80 rpm, the virgin PLA when compounded at 140 rpm, indicated a significant increase in the mechanical properties. The PLA/HNT 5 wt% nanocomposite compounded at 140 rpm showed significant improvement in the dispersion of HNTs in the PLA matrix which in turn enhanced the mechanical and thermal properties. This can be attributed to the increased melt shear at higher screw speeds.

scholarly journals Thermal Properties, Crystallinity, and Oxygen Permeability of Na-montmorillonite Reinforced Plasticized Poly(lactic acid) Film

2016 ◽  
Vol 20 (1) ◽  
pp. 1
Author(s):  
Kurniawan Yuniarto ◽  
Yohanes Aris Purwanto ◽  
Setyo Purwanto ◽  
Bruce A. Welt ◽  
Hadi Karia Purwadaria ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Thermal Properties ◽  
Oxygen Permeability ◽  
Poly Lactic Acid
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