Impact Testing of a Commercial Poly-Lactic Acid

2021 ◽  
pp. 5-8
Author(s):  
George N. Khawly ◽  
Nicolas R. Fabbri ◽  
Amber J. W. McClung ◽  
Juan D. Ocampo
Keyword(s):  
Lactic Acid ◽  
Impact Testing ◽  
Poly Lactic Acid

Studies on Processing Rheological and Mechanical Properties of Poly(lactic acid)/Sesbania Gum/Nano-silica Composites

2017 ◽  
Vol 25 (5) ◽  
pp. 395-404
Author(s):  
Qing Zhang
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Rheological Properties ◽  
Testing Machine ◽  
Silica Content ◽  
Impact Testing ◽  
Poly Lactic Acid ◽  
Nano Silica ◽  
Bending Tests ◽  
Sesbania Gum

Processing rheological properties of poly(lactic acid) (PLA)/sesbania gum (SG)/nano-silica composites were investigated with a torque rheometer, and mechanical properties were researched by a universal testing machine and a cantilever-beam impact testing machine. Effects of SG content, nano-silica content, the types of plasticisers, the plasticiser content and the rotor speed of a torque rheometer on the properties of composites were discussed. The results indicated that polyethylene glycol (PEG)20000 exhibited the best plasticising effect on the composites, and at the same time, did not increase energy consumption of the systems compared with other four plasticisers. As for the aspect of processing rheological properties, the optimum formulation for PLA/SG/ nano-SiO2/PEG20000 composites was: 100 parts of PLA, 8 parts of SG, 2 parts of nano-SiO2, and 5–10 parts of PEG20000. Comparing with unmodified PLA, the comprehensive mechanical properties of the composites improved greatly, based on the results of the tensile, impact and bending tests.

Properties of Poly(Lactic Acid) Blended with Natural Rubber-Graft- Poly(Acrylic Acid)

2020 ◽  
Vol 845 ◽  
pp. 45-50
Author(s):  
Thamolwan Udomkitpanya ◽  
Kawee Srikulkit
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Acrylic Acid ◽  
Natural Rubber ◽  
Impact Testing ◽  
Poly Lactic Acid ◽  
Scanning Calorimetry ◽  
Ft Ir ◽  
Internal Mixer ◽  
Poly Acrylic Acid

Poly(acrylic acid) (PAA) was grafted onto natural rubber (NR) to improve the compatibility of NR and poly(lactic acid) (PLA). Polymer blend between PLA and NR-g-PAA was prepared by an internal mixer. Fourier-transform infrared spectroscopy (FT-IR), tensile testing, impact testing, thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were employed to determine the functional group, mechanical properties and thermal properties of blends, respectively. Results showed that the addition of NR-g-PAA significantly improved the elongation, impact strength and thermal stability of blends. The P70N30 was the optimum composition to obtain improved mechanical properties of PLA.

Electrical Properties of Heat-Treated Poly-Lactic Acid

2011 ◽  
Vol 131 (5) ◽  
pp. 395-400 ◽  
Author(s):  
Toru Oi ◽  
Katsuyoshi Shinyama ◽  
Shigetaka Fujita
Keyword(s):  
Lactic Acid ◽  
Electrical Properties ◽  
Poly Lactic Acid ◽  
Heat Treated

Dielectric Breakdown Properties of Poly-Lactic Acid with Spherulites Growth

2014 ◽  
Vol 134 (4) ◽  
pp. 237-242
Author(s):  
Naru Matsugasaki ◽  
Katsuyoshi Shinyama ◽  
Shigetaka Fujita
Keyword(s):  
Lactic Acid ◽  
Dielectric Breakdown ◽  
Poly Lactic Acid

Characterizing Attapulgite-Reinforced Nanocomposites of Poly(lactic acid)

2020 ◽  
Vol 62 (6) ◽  
pp. 732-743
Author(s):  
Chi-Hui Tsou ◽  
Jipeng Guo ◽  
Ji-Ang Lei ◽  
Manuel Reyes De Guzman ◽  
Maw-Cherng Suen
Keyword(s):  
Lactic Acid ◽  
Poly Lactic Acid

Improvement of the antifouling properties of poly (lactic acid) hollow fiber membranes with poly (lactic acid)–polyethylene glycol–poly (lactic acid) copolymers

Desalination ◽  
2013 ◽  
Vol 325 ◽  
pp. 37-39 ◽  
Author(s):  
Peng Shen ◽  
Akihito Moriya ◽  
Saeid Rajabzadeh ◽  
Tatsuo Maruyama ◽  
Hideto Matsuyama
Keyword(s):  
Lactic Acid ◽  
Polyethylene Glycol ◽  
Hollow Fiber ◽  
Poly Lactic Acid ◽  
Hollow Fiber Membranes ◽  
Fiber Membranes

Effect of Polyethylene Glycol in Nanocellulose/PLA Composites

2019 ◽  
Vol 821 ◽  
pp. 89-95
Author(s):  
Wanasorn Somphol ◽  
Thipjak Na Lampang ◽  
Paweena Prapainainar ◽  
Pongdhorn Sae-Oui ◽  
Surapich Loykulnant ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Lactic Acid ◽  
Polyethylene Glycol ◽  
Aspect Ratio ◽  
Mechanical Performance ◽  
Tensile Modulus ◽  
Poly Lactic Acid ◽  
Solvent Casting ◽  
Casting Method ◽  
Mediated Oxidation

Poly (lactic acid) or PLA was reinforced by nanocellulose and polyethylene glycol (PEG), which were introduced into PLA matrix from 0 to 3 wt.% to enhance compatibility and strength of the PLA. The nanocellulose was prepared by TEMPO-mediated oxidation from microcrystalline cellulose (MCC) powder and characterized by TEM, AFM, and XRD to reveal rod-like shaped nanocellulose with nanosized dimensions, high aspect ratio and high crystallinity. Films of nanocellulose/PEG/PLA nanocomposites were prepared by solvent casting method to evaluate the mechanical performance. It was found that the addition of PEG in nanocellulose-containing PLA films resulted in an increase in tensile modulus with only 1 wt% of PEG, where higher PEG concentrations negatively impacted the tensile strength. Furthermore, the tensile strength and modulus of nanocellulose/PEG/PLA nanocomposites were higher than the PLA/PEG composites due to the existence of nanocellulose chains. Visual traces of crazing were detailed to describe the deformation mechanism.

scholarly journals Poly(lactic acid)—Mass production, processing, industrial applications, and end of life

2016 ◽  
Vol 107 ◽  
pp. 333-366 ◽  
Author(s):  
E. Castro-Aguirre ◽  
F. Iñiguez-Franco ◽  
H. Samsudin ◽  
X. Fang ◽  
R. Auras
Keyword(s):  
Lactic Acid ◽  
End Of Life ◽  
Mass Production ◽  
Industrial Applications ◽  
Poly Lactic Acid
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