Details

Autor(en) / Beteiligte

• Semerci, E.
• Bedri, T. Erdogan
• Kizilcan, N.

Titel

Preparation of thermal conductive Poly(methyl methacrylate)/Silicon nitride nanocomposites via click chemistry

Ist Teil von

• Polymer (Guilford), 2021-01, Vol.212, p.123285, Article 123285

Ort / Verlag

Kidlington: Elsevier Ltd

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A new polymer nanocomposite consisting of silicon nitride (Si3N4) nanoparticle as a conductive filler and poly(methyl methacrylate) (PMMA) as a polymer matrix was synthesized using “click” chemistry. The synthesis of this nanocomposite is a three-step procedure including (i) the preparation of silicon nitride nanosheet (SNNS) by mechanical exfoliation, (ii) the modification of SNNS with successive chemical modification processes, (iii) performing click reaction between alkyne functionalized PMMA and azide functional SNNS. Characterization results confirmed the functionalization of SNNS surface and the successful “grafting to” method using click reaction. Furthermore, the new thermal conductive nanocomposite was formulated as a thermal interface material (TIM) and its performance as a TIM material was investigated using Thermal Conductivity Analysis (DTC). It has been found that the thermal conductivity of the chemically modified nanocomposite (PMMA-SNNS) based TIM is considerably higher than that of TIM prepared with physically blended nanocomposite (PMMA+SNNS) having the same composition. [Display omitted] •The nano-size silicon nitride in nanosheet morphology (SNNS) was obtained via mechanical exfoliation method using ball-milling.•The surface of SNNS was successfully functionalized by performing three-step chemical modification process.•The PMMA-SNNS nanocomposite was prepared using “click” chemistry through the “grafting to” approach and fabricated in thermal interface material (TIM) morphology.•The TIM involving chemical modification (PMMA-SNNS) exhibited higher thermal conductivity than that of the TIM obtained by physical blend (PMMA + SNNS).