Revolutionizing polymethyl methacrylate toughness: Achieving 190% improvement with nanocellulose reinforcement while maintaining optical clarity

Guan-Ting Liu; Shih-Chen Shi; Dieter Rahmadiawan

doi:10.24036/jptk.v7i4.39823

Authors

Guan-Ting Liu Department of Mechanical Engineering, National Cheng Kung University, Taiwan
Shih-Chen Shi Department of Mechanical Engineering, National Cheng Kung University, Taiwan
Dieter Rahmadiawan Department of Mechanical Engineering, National Cheng Kung University, Taiwan

DOI:

https://doi.org/10.24036/jptk.v7i4.39823

Keywords:

PMMA, Cellulose, Toughness, CNC, Transparency

Abstract

Polymethyl methacrylate (PMMA) is widely used in applications requiring high transparency and durability, such as optical lenses and protective coatings. However, its inherent brittleness limits its application in high-impact environments. This study investigates the incorporation of cellulose nanocrystals (CNCs) into PMMA to significantly enhance its toughness without compromising its optical clarity. By reinforcing PMMA with CNCs, the nanocomposites exhibited a remarkable 190% increase in toughness while maintaining 90% optical transparency. The innovation lies in achieving a balance between toughness and transparency through controlled CNC dispersion within the PMMA matrix, which minimizes excessive bonding that could lead to brittleness. Proper CNC dispersion was achieved through in-situ polymerization, allowing the nanocrystals to interact with the polymer matrix through van der Waals forces rather than covalent bonds. This approach reduces stress concentration and mitigates the formation of defects in the polymer matrix, ultimately leading to a tougher, more flexible material. In addition to enhancing mechanical properties, this study underscores the importance of controlling CNC content to preserve the intrinsic optical transparency of PMMA. These findings open new possibilities for CNC-reinforced PMMA in advanced applications that demand high mechanical performance coupled with excellent optical properties, extending its use in fields such as medical devices, protective coatings, and transparent structural materials.

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References

Akbar, I. M., Fauza, A. N., Abadi, Z., & Rahmadiawan, D. (2024). Study of the effective fraction of areca nut husk fibre composites based on mechanical properties. Journal of Engineering Researcher and Lecturer, 3(1), 19–34. https://doi.org/10.58712/jerel.v3i1.126

Ali Sabri, B., Satgunam, M., Abreeza, N., & N. Abed, A. (2021). A review on enhancements of PMMA Denture Base Material with Different Nano-Fillers. Cogent Engineering, 8(1). https://doi.org/10.1080/23311916.2021.1875968

Ash, B. J., Siegel, R. W., & Schadler, L. S. (2004). Mechanical Behavior of Alumina/Poly(methyl methacrylate) Nanocomposites. Macromolecules, 37(4). https://doi.org/10.1021/ma0354400

Ash, B. J., Stone, J., Rogers, D. F., Schadler, L. S., Siegel, R. W., Benicewicz, B. C., & Apple, T. (2001). Investigation into the thermal and mechanical behavior of PMMA/alumina nanocomposites. Materials Research Society Symposium - Proceedings, 661. https://doi.org/10.1557/proc-661-kk2.10

Fauza, A. N., Qalbina, F., Nurdin, H., Ambiyar, & Refdinal. (2023). The influence of processing temperature on the mechanical properties of recycled PET fibers. Teknomekanik, 6(1). https://doi.org/10.24036/teknomekanik.v6i1.21472

Fujisawa, S., Saito, T., Kimura, S., Iwata, T., & Isogai, A. (2014). Comparison of mechanical reinforcement effects of surface-modified cellulose nanofibrils and carbon nanotubes in PLLA composites. Composites Science and Technology, 90. https://doi.org/10.1016/j.compscitech.2013.10.021

Heux, L., Chauve, G., & Bonini, C. (2000). Nonflocculating and chiral-nematic self-ordering of cellulose microcrystals suspensions in nonpolar solvents. Langmuir, 16(21). https://doi.org/10.1021/la9913957

Iwamoto, S., Kai, W., Isogai, A., & Iwata, T. (2009). Elastic modulus of single cellulose microfibrils from tunicate measured by atomic force microscopy. Biomacromolecules, 10(9). https://doi.org/10.1021/bm900520n

Kausch, H. H., & Michler, G. H. (2007). Effect of nanoparticle size and size-distribution on mechanical behavior of filled amorphous thermoplastic polymers. Journal of Applied Polymer Science, 105(5). https://doi.org/10.1002/app.26570

Makruf, Z. I., Afnison, W., & Rahim, B. (2024). A Study on the utilization of areca nut husk fiber as a natural fibre reinforcement in composite applications: A systematic literature review. Journal of Engineering Researcher and Lecturer, 3(1), 18–28. https://doi.org/10.58712/jerel.v3i1.123

Mariano, M., El Kissi, N., & Dufresne, A. (2014). Cellulose nanocrystals and related nanocomposites: Review of some properties and challenges. In Journal of Polymer Science, Part B: Polymer Physics (Vol. 52, Issue 12). https://doi.org/10.1002/polb.23490

Mbarek, I. A., Matadi Boumbimba, R., Rusinek, A., Voyiadjis, G. Z., Gerard, P., & Samadi-Dooki, A. (2018). The dynamic behavior of poly (methyl methacrylate) based nano-rubbers subjected to impact and perforation: Experimental investigations. Mechanics of Materials, 122, 9–25. https://doi.org/10.1016/j.mechmat.2018.03.011

Nurdin, H., Waskito, W., Fauza, A. N., Siregar, B. M., & Kenzhaliyev, B. K. (2023). The investigation of physical dan mechanical properties of Nipah-based particle board. Teknomekanik, 6(2), 94–102. https://doi.org/10.24036/teknomekanik.v6i2.25972

Oksman, K., Mathew, A. P., Bondeson, D., & Kvien, I. (2006). Manufacturing process of cellulose whiskers/polylactic acid nanocomposites. Composites Science and Technology, 66(15). https://doi.org/10.1016/j.compscitech.2006.03.002

Oktaviani, A., Zulfia, A., & Rahmadiawan, D. (2023). Enhancing laminate composites: Investigating the impact of kevlar layering and titanium carbide nanoparticles. Teknomekanik, 6(2), 82–93. https://doi.org/10.24036/teknomekanik.v6i2.26572

Shi, S. C., Lin, C. F., Liu, C. F., & Chen, T. H. (2022). Tribological and mechanical properties of cellulose/PMMA composite. Polymers and Polymer Composites, 30. https://doi.org/10.1177/09673911221140935

Shi, S.-C., Cheng, S.-T., & Rahmadiawan, D. (2024). Developing biomimetic PVA/PAA hydrogels with cellulose nanocrystals inspired by tree frog structures for superior wearable sensor functionality. Sensors and Actuators A: Physical, 379, 115981. https://doi.org/10.1016/j.sna.2024.115981

Shi, S.-C., Hsieh, C.-F., & Rahmadiawan, D. (2024). Enhancing mechanical properties of polylactic acid through the incorporation of cellulose nanocrystals for engineering plastic applications. Teknomekanik, 7(1), 20–28. https://doi.org/10.24036/teknomekanik.v7i1.30072

Shi, S.-C., & Liu, G.-T. (2021). Cellulose nanocrystal extraction from rice straw using a chlorine-free bleaching process. Cellulose, 28(10), 6147–6158. https://doi.org/10.1007/s10570-021-03889-5