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Description
This research addresses the synthesis and characterization of geopolymer–PA12 composites developed to enhance material performance. Two systems were developed: geopolymer–PA 2200 (GP_2200) and geopolymer–PA 3200 GF reinforced with glass beads (GP_3200 GF). Structural and morphological characterization was performed using XRD, FTIR, and SEM techniques. XRD confirmed the amorphous nature of the geopolymer and the semi-crystalline structure of PA12, while composite patterns exhibited features of both phases. FTIR spectra indicated the presence of characteristic functional groups of each component with no significant chemical changes.
The results indicate that the geopolymer and PA12 phases remain chemically distinct, interacting only at their interfaces through physical and morphological effects. In the glass bead–modified composite (GP_3200 GF), the silicon content increased, but no major structural changes were observed in either the matrix or the composite. A key challenge, however, is the poor compatibility between the inorganic geopolymer matrix and the organic PA12 phase. To improve interfacial bonding and achieve better phase integration, adjustments to processing conditions and the use of compatibilizers or surface treatments may be necessary.
Keywords: Geopolymer composites; Polyamide 12; Hybrid materials; Glass bead reinforcement; Interfacial bonding; Morphological analysis
References:
(1) M. Dojčinović, O. Erić-Cekić, I. Svetel, S. Ćirić-Kostić, N. Bogojević, Cavitation resistance of the material PA 3200 GF produced by selective laser sintering, Science of Sintering, 55(00): 11-11 (2023), DOI: 10.2298/SOS220522011D
(2) Y. Liu, L. Zhu, L. Zhou, Y. Li, Microstructure and mechanical properties of reinforced polyamide 12 composites prepared by laser additive manufacturing, Rapid Prototyping Journal, 25(6), (2019) 1127–1134. https://doi.org/10.1108/RPJ-08-2018-0220