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Polymers
Volume 16
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10.3390/polym16070975
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Article

Improvement in Crystallization, Thermal, and Mechanical Properties of Flexible Poly(L-lactide)-b-poly(ethylene glycol)-b-poly(L-lactide) Bioplastic with Zinc Phenylphosphate

by
Kansiri Pakkethati
1,
Prasong Srihanam
1,
Apirada Manphae
1,2,
Wuttipong Rungseesantivanon
3,
Natcha Prakymoramas
3,
Pham Ngoc Lan
4 and
Yodthong Baimark
1,*
1
Biodegradable Polymers Research Unit, Department of Chemistry and Centre of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham University, Mahasarakham 44150, Thailand
2
Scientific Instrument Academic Service Unit, Faculty of Science, Mahasarakham University, Mahasarakham 44150, Thailand
3
National Metal and Materials Technology Centre (MTEC), 114 Thailand Science Park (TSP), Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
4
Faculty of Chemistry, University of Science, Vietnam National University-Hanoi, 19 Le Thanh Tong Street, Phan Chu Trinh Ward, Hoan Kiem District, Hanoi 10000, Vietnam
*
Author to whom correspondence should be addressed.
Polymers 2024, 16(7), 975; https://doi.org/10.3390/polym16070975
Submission received: 25 February 2024 / Revised: 30 March 2024 / Accepted: 31 March 2024 / Published: 3 April 2024
(This article belongs to the Special Issue Development and Application of Bio-Based Polymers)
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Abstract

Poly(L-lactide)-b-poly(ethylene glycol)-b-poly(L-lactide) (PLLA-PEG-PLLA) shows promise for use in bioplastic applications due to its greater flexibility over PLLA. However, further research is needed to improve PLLA-PEG-PLLA’s properties with appropriate fillers. This study employed zinc phenylphosphate (PPZn) as a multi-functional filler for PLLA-PEG-PLLA. The effects of PPZn addition on PLLA-PEG-PLLA characteristics, such as crystallization and thermal and mechanical properties, were investigated. There was good phase compatibility between the PPZn and PLLA-PEG-PLLA. The addition of PPZn improved PLLA-PEG-PLLA’s crystallization properties, as evidenced by the disappearance of the cold crystallization temperature, an increase in the crystallinity, an increase in the crystallization temperature, and a decrease in the crystallization half-time. The PLLA-PEG-PLLA’s thermal stability and heat resistance were enhanced by the addition of PPZn. The PPZn addition also enhanced the mechanical properties of the PLLA-PEG-PLLA, as demonstrated by the rise in ultimate tensile stress and Young’s modulus. We can conclude that the PPZn has potential for use as a multi-functional filler for the PLLA-PEG-PLLA composite due to its nucleating-enhancing, thermal-stabilizing, and reinforcing ability.
Keywords: poly(lactic acid); poly(ethylene glycol); block copolymer; nucleating agent; thermal stabilizer; reinforcing filler poly(lactic acid); poly(ethylene glycol); block copolymer; nucleating agent; thermal stabilizer; reinforcing filler

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MDPI and ACS Style

Pakkethati, K.; Srihanam, P.; Manphae, A.; Rungseesantivanon, W.; Prakymoramas, N.; Lan, P.N.; Baimark, Y. Improvement in Crystallization, Thermal, and Mechanical Properties of Flexible Poly(L-lactide)-b-poly(ethylene glycol)-b-poly(L-lactide) Bioplastic with Zinc Phenylphosphate. Polymers 2024, 16, 975. https://doi.org/10.3390/polym16070975

AMA Style

Pakkethati K, Srihanam P, Manphae A, Rungseesantivanon W, Prakymoramas N, Lan PN, Baimark Y. Improvement in Crystallization, Thermal, and Mechanical Properties of Flexible Poly(L-lactide)-b-poly(ethylene glycol)-b-poly(L-lactide) Bioplastic with Zinc Phenylphosphate. Polymers. 2024; 16(7):975. https://doi.org/10.3390/polym16070975

Chicago/Turabian Style

Pakkethati, Kansiri, Prasong Srihanam, Apirada Manphae, Wuttipong Rungseesantivanon, Natcha Prakymoramas, Pham Ngoc Lan, and Yodthong Baimark. 2024. "Improvement in Crystallization, Thermal, and Mechanical Properties of Flexible Poly(L-lactide)-b-poly(ethylene glycol)-b-poly(L-lactide) Bioplastic with Zinc Phenylphosphate" Polymers 16, no. 7: 975. https://doi.org/10.3390/polym16070975

APA Style

Pakkethati, K., Srihanam, P., Manphae, A., Rungseesantivanon, W., Prakymoramas, N., Lan, P. N., & Baimark, Y. (2024). Improvement in Crystallization, Thermal, and Mechanical Properties of Flexible Poly(L-lactide)-b-poly(ethylene glycol)-b-poly(L-lactide) Bioplastic with Zinc Phenylphosphate. Polymers, 16(7), 975. https://doi.org/10.3390/polym16070975

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