Abstract
Polylactic acid (PLA) has made inroads in the commercial market segment with many unique characteristics. To list a few, such as tenacity, low flame rate, moisture regain percentage, loss of ignition percentage, combustion heat, UV resistance, elastic recovery, and higher melting point, make PLA a predominant material in the commercial market. This study is an attempt to test the feasibility of PLA’s mechanical property and strength aspects with cement mix. An article published on biodegradability aspects backed up by the essential preliminary strength and physical test results is discussed in detail in this manuscript. The work focuses on the multi-scale study along with mechanical properties and strengths to evaluate the elemental characteristics. Thermo gravimetric analysis revealed that PLA would hold inclusion into construction applications either in granular form or filament. Differential Scanning Calorimetry (DSC) found that PLA in filament form is the best inclusion material for construction applications. However, fiber’s tenacity has to be checked, as currently available filaments in the market do not have high tenacity value. From EDX(Energy-dispersive X-ray Spectroscopy) reports, 30% inclusion of PLA as a replacement for fine aggregate has constituent members as Calcium carbonate(CaCO3), Silica(SiO2), and Wollastonite (CaK) resulted in the best composition among the rest. FESEM images revealed that proper gradation in size, PLA granular form’s rough surface, or filament form would enhance the mechanical/physical behavior or even PLA’s chemical behavior.
Highlights
As per plastic insight [1], by 2020, the global polylactic acid (PLA) market will reach a milestone of more than US$ 5 billion
The slump test was being conducted according to IS: 1199-1959, and the results were mentioned in below Table 6
Since Polylactic acid (PLA) granules were coarser than fine aggregate and having lesser water absorption property than the river sand, water and paste will remain in excess in lower replacement percentages, leading to the formation of a fatty and cohesive mix, which provides better workability
Summary
As per plastic insight [1], by 2020, the global polylactic acid (PLA) market will reach a milestone of more than US$ 5 billion. As in India, the usage is limited to 1% of global utilization in 2015 [2]. In India, solid waste generation has opened a Pandora of opportunity boxes to recycle the dry solid waste with the best outputs. Material characterization has become part of the research for identifying the critical parameters such as micro/nanostructural study with SEM (Scanning Electron Microscopy/FESEM (Field Emission Scanning Electron Microscopy)/TEM (Transmission Electron Microscopy) help. Moisture, solvent, and monomers, decomposition, noticing the residue composition using Thermogravimetric analysis (TGA), Enthalpy, melting point and specific heat capacity by Differential Scanning Calorimetry (DSC), to arrive at an infrared spectrum of absorption or emission of all three phases such as a solid, liquid, or gaseous material using Fourier Transform Infrared Loss of volatile components viz. moisture, solvent, and monomers, decomposition, noticing the residue composition using Thermogravimetric analysis (TGA), Enthalpy, melting point and specific heat capacity by Differential Scanning Calorimetry (DSC), to arrive at an infrared spectrum of absorption or emission of all three phases such as a solid, liquid, or gaseous material using Fourier Transform Infrared
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