Reinforcement of Stearic Acid Treated Egg Shell Particles in Epoxy Thermosets: Structural, Thermal, and Mechanical Characterization

• DOI: 10.3390/ma11101872
• Publication Date: 2018-10-02T12:23:50Z
• Authors: Ahmer Hussain Shah; Yuqi Zhang; Xiaodong Xu; Abdul Qadeer Dayo; Xiao Li; Shuo Wang; Wenbin Liu
• Keywords: Thermosetting polymer; Stearic acid; Characterization

This work reports the modification of egg shell (ES) particles by using stearic acid (SA) and their reinforcement in epoxy matrix. The ES treatment via SA was optimized, optimum conditions for concentration, temperature, time were found to be 2.5%, 85 °C, 50 min, respectively. untreated (UES) treated (TES) characterized Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), X-ray diffraction (XRD), electron microscope (SEM), particle size distribution, contact angle. FTIR confirmed chemical on surface DSC reflects an endothermic peak at 240 °C. XRD reveal a decrease crystal crystallinity, while angle increases 169° from 42°. SEM observations clearly reflect distinct separation small domains thus improving increased area. Afterwards, UES TES reinforced 15 20 weight (wt.) % loading. tensile tests 22% increase elongation as compared pure due hydrogen bonding between lowest brittleness recorded TES/epoxy composites wt TGA improved thermal stabilities loading matrix, improvements T5%, T10%, T20% values 33, 26, 21 °C higher than corresponding neat showed 41% storage modulus pristine epoxy, cross-link density reaches 2.71 × 10−3 1.29 mol/cm3 decline tan δ height improvement Tg also observed. best adhesion effectiveness composites. simple economical technique can enhance application various polymeric coating applications.