A Comparative Study of Impact Fracture Toughness of Epoxidized Poly(1, 4 Cis-Isoprene) Compatibilized PLA Binary and Ternary Blends
Poly(lactic acid) (PLA) is a biodegradable polymer with limited application because of its intrinsic brittleness, low toughness, and low elongation at break. Melt blends were prepared by mixing a natural rubber (NR, poly(1,4-cis-isoprene) in the form of liquid NR (LNR), liquid-epoxidized NR (LENR),...
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| Language: | en |
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Wiley
2024
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| Online Access: | http://eprints.uthm.edu.my/12716/1/J19639_467f44ced5a15859e094d261e42980af.pdf http://eprints.uthm.edu.my/12716/ https://doi.org/10.1002/ceat.202400048 |
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| author | Bijarim, Mohd Ahmad, Sahrim La Ode, La Ode Mustaqeem, Mujahid Norazmi, M Normaya, Erna Jaafar, Jamiluddin |
| author_facet | Bijarim, Mohd Ahmad, Sahrim La Ode, La Ode Mustaqeem, Mujahid Norazmi, M Normaya, Erna Jaafar, Jamiluddin |
| author_sort | Bijarim, Mohd |
| building | UTHM Library |
| collection | Institutional Repository |
| content_provider | Universiti Tun Hussein Onn Malaysia |
| content_source | UTHM Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | Poly(lactic acid) (PLA) is a biodegradable polymer with limited application because of its intrinsic brittleness, low toughness, and low elongation at break. Melt blends were prepared by mixing a natural rubber (NR, poly(1,4-cis-isoprene) in the form of liquid NR (LNR), liquid-epoxidized NR (LENR), and polypropylene (PP) in the PLA matrix. Four blend systems were designed and prepared, i.e., PLA–PP, PLA–PP–LNR, and PLA–LNR or PLA–LENR. The composition of PP in the blend was fixed at 10 % PLAPP (90/10). Results showed that PLA–PP mixed with LNR improved impact and elongation at break. The binary blend of PLA–LNR (90/10) significantly enhanced impact strength and elongation at break properties. In contrast, the binary blends of PLA–LENR (90/10) showed a lower value of elongation at break (9.5 % vs. 37.3%) and impact strength (4.56 kJ m−2 vs. 6.44 kJ m−2). The melting temperature (Tm) and the glass transition temperature (Tg) were measured by differential scanning calorimetry, which recorded slight changes in the glass temperatures and melting temperatures. Scanning electron microscopy images of the tensile fracture of the PLA–LNR (90/10) blend showed the presence of large
fibrils associated with the ductile failure related to neat PLA. Finally, the fracture
toughness (KIC) of PLA–LNR (90/10) showed an increase of 39 % over neat PLA
(2.94 MPa.m1/2 vs. 4.08 MPa.m1/2). |
| format | Article |
| id | my.uthm.eprints-12716 |
| institution | Universiti Tun Hussein Onn Malaysia |
| language | en |
| publishDate | 2024 |
| publisher | Wiley |
| record_format | eprints |
| spelling | my.uthm.eprints-127162025-06-25T23:56:01Z http://eprints.uthm.edu.my/12716/ A Comparative Study of Impact Fracture Toughness of Epoxidized Poly(1, 4 Cis-Isoprene) Compatibilized PLA Binary and Ternary Blends Bijarim, Mohd Ahmad, Sahrim La Ode, La Ode Mustaqeem, Mujahid Norazmi, M Normaya, Erna Jaafar, Jamiluddin TP Chemical technology Poly(lactic acid) (PLA) is a biodegradable polymer with limited application because of its intrinsic brittleness, low toughness, and low elongation at break. Melt blends were prepared by mixing a natural rubber (NR, poly(1,4-cis-isoprene) in the form of liquid NR (LNR), liquid-epoxidized NR (LENR), and polypropylene (PP) in the PLA matrix. Four blend systems were designed and prepared, i.e., PLA–PP, PLA–PP–LNR, and PLA–LNR or PLA–LENR. The composition of PP in the blend was fixed at 10 % PLAPP (90/10). Results showed that PLA–PP mixed with LNR improved impact and elongation at break. The binary blend of PLA–LNR (90/10) significantly enhanced impact strength and elongation at break properties. In contrast, the binary blends of PLA–LENR (90/10) showed a lower value of elongation at break (9.5 % vs. 37.3%) and impact strength (4.56 kJ m−2 vs. 6.44 kJ m−2). The melting temperature (Tm) and the glass transition temperature (Tg) were measured by differential scanning calorimetry, which recorded slight changes in the glass temperatures and melting temperatures. Scanning electron microscopy images of the tensile fracture of the PLA–LNR (90/10) blend showed the presence of large fibrils associated with the ductile failure related to neat PLA. Finally, the fracture toughness (KIC) of PLA–LNR (90/10) showed an increase of 39 % over neat PLA (2.94 MPa.m1/2 vs. 4.08 MPa.m1/2). Wiley 2024 Article PeerReviewed text en http://eprints.uthm.edu.my/12716/1/J19639_467f44ced5a15859e094d261e42980af.pdf Bijarim, Mohd and Ahmad, Sahrim and La Ode, La Ode and Mustaqeem, Mujahid and Norazmi, M and Normaya, Erna and Jaafar, Jamiluddin (2024) A Comparative Study of Impact Fracture Toughness of Epoxidized Poly(1, 4 Cis-Isoprene) Compatibilized PLA Binary and Ternary Blends. Chemical Engenering Technologi. pp. 1-10. https://doi.org/10.1002/ceat.202400048 |
| spellingShingle | TP Chemical technology Bijarim, Mohd Ahmad, Sahrim La Ode, La Ode Mustaqeem, Mujahid Norazmi, M Normaya, Erna Jaafar, Jamiluddin A Comparative Study of Impact Fracture Toughness of Epoxidized Poly(1, 4 Cis-Isoprene) Compatibilized PLA Binary and Ternary Blends |
| title | A Comparative Study of Impact Fracture Toughness of Epoxidized Poly(1, 4 Cis-Isoprene) Compatibilized PLA Binary and Ternary Blends |
| title_full | A Comparative Study of Impact Fracture Toughness of Epoxidized Poly(1, 4 Cis-Isoprene) Compatibilized PLA Binary and Ternary Blends |
| title_fullStr | A Comparative Study of Impact Fracture Toughness of Epoxidized Poly(1, 4 Cis-Isoprene) Compatibilized PLA Binary and Ternary Blends |
| title_full_unstemmed | A Comparative Study of Impact Fracture Toughness of Epoxidized Poly(1, 4 Cis-Isoprene) Compatibilized PLA Binary and Ternary Blends |
| title_short | A Comparative Study of Impact Fracture Toughness of Epoxidized Poly(1, 4 Cis-Isoprene) Compatibilized PLA Binary and Ternary Blends |
| title_sort | comparative study of impact fracture toughness of epoxidized poly(1, 4 cis-isoprene) compatibilized pla binary and ternary blends |
| topic | TP Chemical technology |
| url | http://eprints.uthm.edu.my/12716/1/J19639_467f44ced5a15859e094d261e42980af.pdf http://eprints.uthm.edu.my/12716/ https://doi.org/10.1002/ceat.202400048 |
| url_provider | http://eprints.uthm.edu.my/ |