Apparent Properties Characterization for PMMA/ Solid Lubricant, PMMA/ MWCNT Composites via in Situ Polymerization

In situ bulk polymerization of methyl methacrylate was studied in the presence of multi-walled carbon nanotubes (MWCNT) and a lubricant (calcium stearate, polyethylene wax, and beeswax). Both the heat released over time and the isothermal temperature were calculated. The in situ bulk polymerization of methyl methacrylate was characterized using DSC and FTIR to evaluate the thermal behavior. It showed improved chemical miscibility, and it was observed that the large particle sizes of both beeswax and calcium stearate hindered the polymerization and delayed the reaction time. As for the very small nanoparticles on the microscopic scale, they lead to fast polymerization reactions. The glass transition temperature (Tg) and entropy were measured using DSC. A significant improvement in the polymerization rate, an increasing in Tg of nanocomposites and self-lubricating composites compared to pure PMMA and produces ductile and less rough structures.

self-lubricating composites, Nano-composites, plasticizer, in situ polymerization, chemical miscibility.

1. Y.-W. Mai and Z.-Z. Yu, “Polymer nanocomposites,” 2006. [Google Scholar] [Crossref]

2. P. M. Ajayan, L. S. Schadler, C. Giannaris, and A. Rubio, “Single‐walled carbon nanotube–polymer composites: strength and weakness,” Adv. Mater., vol. 12, no. 10, pp. 750–753, 2000. [Google Scholar] [Crossref]

3. Y. Li, B. Zhao, S. Xie, and S. Zhang, “Synthesis and properties of poly (methyl methacrylate)/ montmorillonite (PMMA/MMT) nanocomposites,” Polym. Int., vol. 52, no. 6, pp. 892–898, 2003. [Google Scholar] [Crossref]

4. T. Xie, G. Yang, X. Fang, and Y. Ou, “Synthesis and characterization of poly (methyl methacrylate)/montmorillonite nanocomposites by in situ bulk polymerization,” J. Appl. Polym. Sci., vol. 89, no. 8, pp. 2256–2260, 2003. [Google Scholar] [Crossref]

5. C. Zeng, N. Hossieny, C. Zhang, and B. Wang, “Synthesis and processing of PMMA carbon nanotube nanocomposite foams,” Polymer (Guildf)., vol. 51, no. 3, pp. 655–664, 2010. [Google Scholar] [Crossref]

6. L. Xu et al., “Preparation and Study on the Flame-Retardant Properties of CNTs/PMMA Microspheres,” ACS Omega, vol. 7, no. 1, pp. 1347–1356, 2022, doi: 10.1021/acsomega.1c05606. [Google Scholar] [Crossref]

7. K. Zhang, J. Y. Lim, and H. J. Choi, “Amino functionalization and characteristics of multi-walled carbon nanotube/poly (methyl methacrylate) nanocomposite,” Diam. Relat. Mater., vol. 18, no. 2–3, pp. 316–318, 2009. [Google Scholar] [Crossref]

8. A. Laachachi, M. Cochez, E. Leroy, P. Gaudon, M. Ferriol, and J.-M. Lopez Cuesta, “Effect of Al2O3 and TiO2 nanoparticles and APP on thermal stability and flame retardance of PMMA,” Polym. Adv. Technol., vol. 17, no. 4, pp. 327–334, 2006. [Google Scholar] [Crossref]

9. J. Zheng, R. Zhu, Z. He, G. Cheng, H. Wang, and K. Yao, “Synthesis and characterization of PMMA/ SiO2 nanocomposites by in situ suspension polymerization,” J. Appl. Polym. Sci., vol. 115, no. 4, pp. 1975–1981, 2010. [Google Scholar] [Crossref]

10. X.-L. Xie, R. K.-Y. Li, Q.-X. Liu, and Y.-W. Mai, “Structure-property relationships of in-situ PMMA modified nano-sized antimony trioxide filled poly (vinyl chloride) nanocomposites,” Polymer (Guildf)., vol. 45, no. 8, pp. 2793–2802, 2004. [Google Scholar] [Crossref]

11. F. Román, S. Montserrat, and J. M. Hutchinson, “On the effect of montmorillonite in the curing reaction of epoxy nanocomposites,” J. Therm. Anal. Calorim., vol. 87, pp. 113–118, 2007. [Google Scholar] [Crossref]

12. R. Peila, G. Malucelli, and A. Priola, “Preparation and characterization of UV-cured acrylic nanocomposites based on modified organophilic montmorillonites,” J. Therm. Anal. Calorim., vol. 97, no. 3, pp. 839–844, 2009. [Google Scholar] [Crossref]

13. M. Shang et al., “Fabrication and Characterization of PMMA/MWCNTs Composite Materials,” J. Wuhan Univ. Technol. Sci. Ed., vol. 38, no. 5, pp. 1190–1197, 2023. [Google Scholar] [Crossref]

14. F. G. Granados-Martínez et al., “MWCNTs-polymer composites characterization through spectroscopies: FTIR and Raman,” MRS Adv., vol. 3, no. 63, pp. 3757–3762, 2018. [Google Scholar] [Crossref]

15. M. F. L. De Volder, S. H. Tawfick, R. H. Baughman, and A. J. Hart, “Carbon nanotubes: present and future commercial applications,” Science (80-. )., vol. 339, no. 6119, pp. 535–539, 2013. [Google Scholar] [Crossref]

16. M. A. Aldosari, A. A. Othman, and E. H. Alsharaeh, “Synthesis and characterization of the in situ bulk polymerization of PMMA containing graphene sheets using microwave irradiation,” Molecules, vol. 18, no. 3, pp. 3152–3167, 2013. [Google Scholar] [Crossref]

17. S. Chen, W. Shen, G. Wu, D. Chen, and M. Jiang, “A new approach to the functionalization of single-walled carbon nanotubes with both alkyl and carboxyl groups,” Chem. Phys. Lett., vol. 402, no. 4–6, pp. 312–317, 2005. [Google Scholar] [Crossref]

18. S.-Y. Lee and S.-J. Park, “Hydrogen adsorption of acid-treated multi-walled carbon nanotubes at low temperature,” Bull. Korean Chem. Soc., vol. 31, no. 6, pp. 1596–1600, 2010. [Google Scholar] [Crossref]

19. R. Yudianti, H. Onggo, Y. Saito, T. Iwata, and J. Azuma, “Analysis of functional group sited on multi-wall carbon nanotube surface,” Open Mater. Sci. J., vol. 5, no. 1, 2011. [Google Scholar] [Crossref]

20. N. L. McCook, B. Boesl, D. L. Burris, and W. G. Sawyer, “Epoxy, ZnO, and PTFE nanocomposite: friction and wear optimization,” Tribol. Lett., vol. 22, no. 3, pp. 253–257, 2006. [Google Scholar] [Crossref]

21. C. DI BENEDETTA, R. BALAZS, G. GOMBOS, and G. PORCELLATI, “DM 285, $168.20.,” Nature, vol. 287, p. 877, 1980. [Google Scholar] [Crossref]

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