Influence of the morphology and viscoelasticity on the thermomechanical properties of poly(lactic acid)/thermoplastic polyurethane blends compatibilized with ethylene‐ester copolymer

2020 ◽  
Vol 137 (31) ◽  
pp. 48926 ◽  
Author(s):  
Giordano Pierozan Bernardes ◽  
Nathália Rosa Luiz ◽  
Ruth Marlene Campomanes Santana ◽  
Maria Madalena Camargo Forte
Keyword(s):  
Lactic Acid ◽  
Thermoplastic Polyurethane ◽  
Thermomechanical Properties ◽  
Poly Lactic Acid

scholarly journals Feasibility of Reprocessing Natural Fiber Filled Poly(lactic acid) Composites: An In-Depth Investigation

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Sujal Bhattacharjee ◽  
Dilpreet S. Bajwa
Keyword(s):  
Lactic Acid ◽  
Natural Fiber ◽  
Environmental Concern ◽  
Wood Flour ◽  
Gel Permeation Chromatography ◽  
Thermomechanical Properties ◽  
Poly Lactic Acid ◽  
Filler Concentration ◽  
Scanning Calorimetry ◽  
Abrupt Decrease

Poly(lactic acid) (PLA) based composites are biodegradable; their disposal after single use may be needless and uneconomical. Prodigal disposal of these composites could also create an environmental concern and additional demand for biobased feedstock. Under these circumstances, recycling could be an effective solution, since it will widen the composite service life and prevent the excessive use of natural resources. This research investigates an in-depth impact of recycling on the mechanical and thermomechanical properties of oak wood flour based PLA composites. Two composite formulations (30 and 50 wt% filler), each with 3 wt% coupling agent (PLA-g-MA), were produced and reprocessed six times by extrusion followed by injection molding. Measurements of fiber length and molecular weight of polymer were, respectively, carried out by gel permeation chromatography (GPC). Scanning electron microscopy (SEM), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and Fourier transform infrared spectroscopy (FTIR) tools were used to study morphological and molecular alterations. With consecutive recycling, PLA composites showed a gradual decrease in strength and stiffness properties and an increase in strain properties. The 50% and 30% filler concentration of fibers in the composite showed an abrupt decrease in strength properties after six and two reprocessing cycles, respectively.

Composites of poly(lactic) acid/thermoplastic polyurethane/mica with compatibilizer: morphology, miscibility and interphase

RSC Advances ◽  
2015 ◽  
Vol 5 (120) ◽  
pp. 98915-98924 ◽  
Author(s):  
Shikui Jia ◽  
Zhong Wang ◽  
Yan Zhu ◽  
LiGui Chen ◽  
Lei Fu
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Thermoplastic Polyurethane ◽  
Poly Lactic Acid

Relationship between mechanical properties and morphology of poly(lactic) acid (PLA)/thermoplastic polyurethane (TPU)/mica composites.

Effects of thermoplastic polyurethane on the properties of poly(lactic acid)/organo-montmorillonite nanocomposites based on novel vane extruder

2013 ◽  
Vol 54 (10) ◽  
pp. 2292-2300 ◽  
Author(s):  
Shikui Jia ◽  
Jinping Qu ◽  
Rongyuan Chen ◽  
Chengran Wu ◽  
Zan Huang ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Thermoplastic Polyurethane ◽  
Poly Lactic Acid ◽  
Montmorillonite Nanocomposites

scholarly journals Analysis of thermomechanical properties of polymeric materials produced by a 3D printing method

2019 ◽  
Vol 13 (4) ◽  
pp. 343-348
Author(s):  
Adam Gnatowski ◽  
Rafał Gołębski ◽  
Piotr Sikora
Keyword(s):  
3D Printing ◽  
Ethylene Terephthalate ◽  
Dynamic Properties ◽  
Thermoplastic Polyurethane ◽  
Polymeric Materials ◽  
Acrylonitrile Butadiene Styrene ◽  
Thermomechanical Properties ◽  
Poly Lactic Acid ◽  
Thermoplastic Polyurethane Elastomer ◽  
Butadiene Styrene

A comparative analysis of the thermomechanical properties of semicrystalline and amorphous polymeric materials was carried out. Samples were produced by using a 3D printing technology on the SIGNAL printer - ATMAT. The following polymeric materials were used to make the samples: TPU-thermoplastic polyurethane elastomer, ABScopolymer acrylonitrile-butadiene-styrene, Nosewood, PET-ethylene terephthalate, PLA-poly (lactic acid). The research included a thermal analysis of the dynamic properties (DMTA) of manufactured materials.

Effects of aging on the thermomechanical properties of poly(lactic acid)

2010 ◽  
Vol 119 (1) ◽  
pp. 472-481 ◽  
Author(s):  
Michael Niaounakis ◽  
Evangelia Kontou ◽  
Menelaos Xanthis
Keyword(s):  
Lactic Acid ◽  
Thermomechanical Properties ◽  
Poly Lactic Acid ◽  
Effects Of Aging

Thermomechanical properties of poly(lactic acid) films reinforced with hydroxyapatite and regenerated cellulose microfibers

2014 ◽  
Vol 131 (20) ◽  
pp. n/a-n/a
Author(s):  
Arman Mahboubi Soufiani ◽  
Masoud Salehi ◽  
Mikael Skrifvars ◽  
Maria Persson ◽  
Sung-Woo Cho
Keyword(s):  
Lactic Acid ◽  
Thermomechanical Properties ◽  
Poly Lactic Acid ◽  
Regenerated Cellulose ◽  
Cellulose Microfibers
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