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Polymers
Volume 16
Issue 23
10.3390/polym16233391
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Article

Study on the Mechanical and Thermal Properties and Shape Memory Behaviors of Blends of Bio-Based Polybenzoxazine and Polycaprolactone with Different Molecular Weights

by
Sunan Tiptipakorn
1,*,
Naritsara Chaipakdee
1,
Sarawut Rimdusit
2,
Kasinee Hemvichian
3 and
Pattra Lertsarawut
3
1
Department of Physical and Material Sciences, Faculty of Liberal Arts and Science, Kasetsart University, Nakhon Pathom 73140, Thailand
2
Center of Excellence in Polymeric Materials for Medical Practice Devices, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
3
Thailand Institute of Nuclear Technology (Public Organization), Ongkarak District, Nakornnayok 26120, Thailand
*
Author to whom correspondence should be addressed.
Polymers 2024, 16(23), 3391; https://doi.org/10.3390/polym16233391
Submission received: 8 October 2024 / Revised: 18 November 2024 / Accepted: 28 November 2024 / Published: 30 November 2024
(This article belongs to the Special Issue Advances in Sustainable Polymers: Processing, Modeling, Properties and Applications, 2nd Edition)
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Abstract

In this research, blends of bio-based polybenzoxazine (V-fa) and polycaprolactone (PCL) with different molecular weights (Mn) (14,000, 45,000, and 80,000 Da) were prepared with varying PCL content from 10 to 95 wt%. The spectra measured using Fourier Transform Infrared Spectroscopy (FTIR) may indicate the presence of hydrogen bonding between two polymeric components. The thermograms obtained using a Differential Scanning Calorimeter (DSC) and dynamic mechanical analyzer (DMA) exhibited a shift in glass transition temperature (Tg), which indicated partial miscibility between V-fa and PCL. The thermograms obtained using a thermogravimetric analyzer (TGA) revealed that the addition of PCL led to an increase in the maximum decomposition temperature (Tdmax). The tensile strength and modulus decreased with an increase in PCL, thus indicating a decrease in brittleness. Interestingly, only the samples with an Mn of 80,000 Da were bendable. The blends with 80 wt% PCL were revealed to have shape memory behaviors with a shape fixity of approximately 81%. The shape recovery ratio of the blends with 95 wt% PCL was approximately 78%.
Keywords: shape memory systems; bio-based polybenzoxazine; polycaprolactone; different molecular weights shape memory systems; bio-based polybenzoxazine; polycaprolactone; different molecular weights

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MDPI and ACS Style

Tiptipakorn, S.; Chaipakdee, N.; Rimdusit, S.; Hemvichian, K.; Lertsarawut, P. Study on the Mechanical and Thermal Properties and Shape Memory Behaviors of Blends of Bio-Based Polybenzoxazine and Polycaprolactone with Different Molecular Weights. Polymers 2024, 16, 3391. https://doi.org/10.3390/polym16233391

AMA Style

Tiptipakorn S, Chaipakdee N, Rimdusit S, Hemvichian K, Lertsarawut P. Study on the Mechanical and Thermal Properties and Shape Memory Behaviors of Blends of Bio-Based Polybenzoxazine and Polycaprolactone with Different Molecular Weights. Polymers. 2024; 16(23):3391. https://doi.org/10.3390/polym16233391

Chicago/Turabian Style

Tiptipakorn, Sunan, Naritsara Chaipakdee, Sarawut Rimdusit, Kasinee Hemvichian, and Pattra Lertsarawut. 2024. "Study on the Mechanical and Thermal Properties and Shape Memory Behaviors of Blends of Bio-Based Polybenzoxazine and Polycaprolactone with Different Molecular Weights" Polymers 16, no. 23: 3391. https://doi.org/10.3390/polym16233391

APA Style

Tiptipakorn, S., Chaipakdee, N., Rimdusit, S., Hemvichian, K., & Lertsarawut, P. (2024). Study on the Mechanical and Thermal Properties and Shape Memory Behaviors of Blends of Bio-Based Polybenzoxazine and Polycaprolactone with Different Molecular Weights. Polymers, 16(23), 3391. https://doi.org/10.3390/polym16233391

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