Synthesis of Dispersed and Self-Assembled Metal Particles in Epoxy via Aqueous to Organic Phase Transfer Technique

Bakar, M. Abu; Akib, Noorul Ain Mohd; Hirmizi, Nor Hashila Mohd.; Tan, Wei; Bakar, Noor Hana Hanif Abu; Jusoh, Ismail; Teoh, Cheng Hoon; See, Chun Hwa

doi:10.11159/ijtan.2015.002

Cited by 1 publication

(1 citation statement)

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“…Akib et al [ 8 ] performed the synthesis of metal nanoparticles (Au, Ag, and Cu) in an aqueous phase and their subsequent transfer to an epoxy resin. Close-packed particle arrangements (especially for gold nanoparticles, AuNP) and increments of the glass transition temperature of the epoxy resin due to the presence of nanoparticles were observed.…”

Section: Introductionmentioning

confidence: 99%

Effect of Gold Nanoparticles on the Physical Properties of an Epoxy Resin

Fraga

Carrillo

Vázquez-Tato

et al. 2023

IJMS

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The effect of doping the bisphenol A diglycidyl ether (DGEBA)/m-xylylenediamine (mXDA) system with gold nanoparticles (AuNP) has been studied with differential scanning calorimetry (DSC), thermogravimetric analysis, dynamic mechanical analysis (DMA), and dielectric analysis (DEA). The evolved heat (ΔHt), the glass transition temperature (Tg), and the associated activation energies of this relaxation process have been determined. Below a certain concentration of AuNPs (=8.5%, in mg AuNP/g epoxy matrix), Tg decreases linearly with the concentration of AuNPs, but above it, Tg is not affected. The degree of conversion α of this epoxy system was analyzed by the semiempirical Kamal’s model, evidencing that diffusion correction is required at high values of α. Activation energy values suggest that AuNPs can cause some impediments at the beginning of the crosslinking process (n-order mechanism). The slight difference between the initial decomposition temperature, as well as the temperature for which the degradation rate is at a maximum, for both systems can be accepted to be within experimental error. Mechanical properties (tension, compression, and bending tests) are not affected by the presence of AuNPs. Dielectric measurements show the existence of a second Tg at high temperatures, which was analyzed using the Tsagarapoulos and Eisenberg model of the mobility restrictions of network chains bound to the filler.

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Section: Introductionmentioning

confidence: 99%