Journal of Bionic Engineering ›› 2021, Vol. 18 ›› Issue (6): 1430-1438.doi: 10.1007/s42235-021-00086-9
Flexural and Dynamic Mechanical Properties of Alkali-Treated Coir/ Pineapple Leaf Fibres Reinforced Polylactic Acid Hybrid Biocomposites
Ramengmawii Siakeng 1,2, Mohammad Jawaid 2, Mohammad Asim 2, Hassan Fouad 3, Sameer Awad 4, Naheed Saba 2, Suchart Siengchin 1
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1 Department of Mechanical and Process Engineering , The
Sirindhorn International Thai-German, Graduate School
of Engineering (TGGS), King Mongkut’s University
of Technology North Bangkok , Bangkok 10800 , Thailand
2 Laboratory of Biocomposite Technology , Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia , 43400 UPM Serdang , Selangor , Malaysia
3 Applied Medical Science Department , Community College, King Saud University , P.O. Box 10219 , Riyadh 11433 , Saudi Arabia
4 Chemistry, School of Science and Technology , University of New England , Armidale , NSW 2351 , Australia
Flexural and Dynamic Mechanical Properties of Alkali-Treated Coir/ Pineapple Leaf Fibres Reinforced Polylactic Acid Hybrid Biocomposites
Ramengmawii Siakeng 1,2, Mohammad Jawaid 2, Mohammad Asim 2, Hassan Fouad 3, Sameer Awad 4, Naheed Saba 2, Suchart Siengchin 1
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1 Department of Mechanical and Process Engineering , The Sirindhorn International Thai-German, Graduate School of Engineering (TGGS), King Mongkut’s University of Technology North Bangkok , Bangkok 10800 , Thailand
2 Laboratory of Biocomposite Technology , Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia , 43400 UPM Serdang , Selangor , Malaysia
3 Applied Medical Science Department , Community College, King Saud University , P.O. Box 10219 , Riyadh 11433 , Saudi Arabia
4 Chemistry, School of Science and Technology , University of New England , Armidale , NSW 2351 , Australia
摘要： Polylactic acid (PLA) possesses good mechanical and biodegradability properties which make it a suitable material for polymer composites whereas brittleness and high costs limit its utilization in various applications. The reinforcement of natural fibres with biopolymers has been formed to be an efficient technique to develop composites having the ability to be fully biodegradable. This study concerns with the incorporation of various percentages of untreated and alkali-treated Coir Fibres (CF) and pineapple leaf fibres (PALF) in PLA biocomposites and characterizations of flexural, morphological and dynamic mechanical properties. Flexural properties showed that the treated C1P1 hybrid composites (C1P1A) displayed highest flexural strength (35.81 MPa) and modulus (5.28 GPa) among all hybrid biocomposites. Scanning Electron Microscopy (SEM) revealed a behaviour of fibre-matrix adhesion in untreated treated biocomposites. SEM observation revealed good dispersion of the fillers in PLA. Dynamic mechanical analysis revealed that C1P1A showed highest glass transition temperature ( Tg ) and storage modulus ( E ′) while untreated C3P7 displayed the least Tg and E ?. Overall findings showed that alkali-treated hybrid biocomposites (CF/PALF/PLA) especially C1P1A have improved flexural properties, dynamic and morphological properties over untreated biocomposites. Success of these findings will provide attracting consideration of these hybrid biocomposites for various lightweight uses in a broad selection of industrial applications such as biomedical sectors, automobile, construction, electronics equipment, and hardware tools.