Performance of Cow Dung Reinforced Biodegradable Poly(Lactic Acid) Biocomposites for Structural Applications

In this work, performance of cow dung (CD) reinforced poly(lactic acid) (PLA) biocomposites was investigated for the potential use in load bearing application. CD of average 4 mm size was blended with PLA at different CD ratios (0–50 wt%) and their effects on the biocomposite properties were studied...

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Bibliographic Details
Published in:Journal of polymers and the environment 2018-02, Vol.26 (2), p.474-486
Main Authors: Yusefi, Mostafa, Khalid, Mohammad, Yasin, Faizah Md, Abdullah, Luqman Chuah, Ketabchi, Mohammad Reza, Walvekar, Rashmi
Format: Article
Language:English
Subjects:
ADHESION
Biodegradability
BIODEGRADATION
BIOLOGICAL MATERIALS
Biomedical materials
Cattle manure
Chemistry
Chemistry and Materials Science
COMPOSITE MATERIALS
COWS
Cracking (fracturing)
Dung
Dynamic mechanical properties
Dynamic stability
Environmental Chemistry
Environmental Engineering/Biotechnology
Fracture mechanics
Fractures
IMPACT STRENGTH
Industrial Chemistry/Chemical Engineering
LACTIC ACID
MATERIALS SCIENCE
Mechanical properties
Original Paper
Polylactic acid
Polymer Sciences
SCANNING ELECTRON MICROSCOPY
SOILS
Tensile strength
Thermal stability
THERMODYNAMIC PROPERTIES
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Summary:In this work, performance of cow dung (CD) reinforced poly(lactic acid) (PLA) biocomposites was investigated for the potential use in load bearing application. CD of average 4 mm size was blended with PLA at different CD ratios (0–50 wt%) and their effects on the biocomposite properties were studied. The results showed an improvement in the flexural properties, while the tensile and impact strength dropped by 20 and 28% with the addition of 50% CD. The decline in the tensile and impact strength was due to micro-cracking and voids formation at higher CD content. Also, the incorporation of CD slightly decreased the thermal stability of the biocomposite. However, dynamic mechanical properties of the biocomposites generally improved. SEM analysis of tensile and impact fractured surfaces indicated that the CD had a reasonable adhesion with matrix. Moreover, the SEM micrographs of soil burial studies showed an accelerated degradation of higher CD wt% biocomposites.
ISSN:1566-2543
1572-8919
1572-8900
DOI:10.1007/s10924-017-0963-z