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

Reactively extruded ecocomposites based on poly(lactic acid)/bisphenol A polycarbonate blends reinforced with regenerated cellulose microfibers

2017 ◽  
Vol 139 ◽  
pp. 127-137 ◽  
Author(s):  
Vu Thanh Phuong ◽  
Vito Gigante ◽  
Laura Aliotta ◽  
Maria-Beatrice Coltelli ◽  
Patrizia Cinelli ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Bisphenol A ◽  
Poly Lactic Acid ◽  
Regenerated Cellulose ◽  
Bisphenol A Polycarbonate ◽  
Cellulose Microfibers

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.

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
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