Synergetic effect of micro-hBN and nano-Al2O3 fillers on structural, surface, thermal, and mechanical properties of PLA/hBN/Al₂O₃ hybrid composites: experimental and theoretical investigation

J. Vishnu Chandara School of Mechanical Engineering, Universiti Sains Malaysia (USM), Nibong Tebal, MalaysiaCorrespondence[email protected]

https://orcid.org/0000-0003-0033-533X View further author information

D. Mutharasub Western Digital Corporation, MCoE, PTDI-SSD, Western Digital Corporation, Seberang Perai Selatan, MalaysiaView further author information

K. Mohameda School of Mechanical Engineering, Universiti Sains Malaysia (USM), Nibong Tebal, Malaysia

https://orcid.org/0000-0003-1074-7397 View further author information

K. I. K. Marsillac School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia (USM), Nibong Tebal, Malaysia

https://orcid.org/0000-0003-0684-9438 View further author information

S. Shanmugand School of Physics, Universiti Sains Malaysia (USM), Minden, MalaysiaView further author information

A. A. Azland School of Physics, Universiti Sains Malaysia (USM), Minden, Malaysia

https://orcid.org/0000-0002-7977-4249 View further author information

ABSTRACT

PLA/hBN/Al₂O₃ hybrid composites with 1–30% filler concentrations were prepared in which composites with 1–2% fillers exhibit high tensile strength & modulus (8–22%, 2–12%), flexural strength & modulus (10–21%, 5–16%), storage modulus (1–14%), T_g & thermal stability (4°C, 4%), scratch hardness (37–48%), with very low CTE (22–25% & 58–66%) & surface roughness (81–97%) compared to all other samples. This improved mechanical, thermal, and decreased CTE were due to synergetic effects of hybrid fillers in the PLA matrix. The extruded filaments with 1% hybrid fillers can be used for the mass production of future bio-based substrates and enclosures.

KEYWORDS:

Acknowledgments

Vishnu Chandar Janakiraman expresses gratitude to USM Fellowship for financial support. Authors wish to acknowledge NOR Laboratory in School of Physics, USM Main campus, Gelugor, Malaysia for providing equipments to study XRD & FESEM analysis and Western Digital Corporation (Sandisk Storage Malaysia (SDSM)), Batu Kawan, Malaysia for providing facilities to study FTIR, SEM, DSC, TGA, TMA, DMA, 3pt bending, and Tensile analysis.

Additional information

Notes on contributors

J. Vishnu Chandar

Corresponding Author: J. Vishnu Chandar

D. Mutharasu

Co Author 2: D. Mutharasu

K. Mohamed

Co Author 3: K. Mohamed

K. I. K. Marsilla

Co Author 4: K. I. K. Marsilla

S. Shanmugan

Co Author 5: S. Shanmugan

A. A. Azlan

Co Author 6: A. A. Azlan

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