Elsevier

Scripta Materialia

Volume 61, Issue 1, July 2009, Pages 32-35
Scripta Materialia

Enhancement of adhesion between carbon nanotubes and polymer substrates using microwave irradiation

https://doi.org/10.1016/j.scriptamat.2009.02.060Get rights and content

This paper reports the enhancement of adhesive strength between single-walled carbon nanotubes (SWNTs) and polymer substrates using microwave irradiation of 0–5 min duration at 2.45 GHz and 800 W. Field emission scanning electron microscopy images, ultraviolet–visible data and four-point probe sheet resistance measurement data indicate that microwave irradiation is effective for enhancement of adhesion between SWNTs and polymer substrates. SWNTs could be locally welded onto a polymer substrate due to their active response to microwave irradiation.

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    Moreover, spark discharges from conductors under microwave irradiation is very interesting and useful. Shim et al. reported tensile strength of CNT-PET fabricated via microwave irradiation is enhanced about 16% compared to a pristine sample [7]. Qu et al. demonstrated the tensile strength of BPs (non-woven CNT membranes)/PE with microwave irradiation showed 1.6 times greater than that of BPs/PE [8].

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    It had reported that the intense heats releasing from a carbon nanotube under microwave irradiation led to its temperature sharply increasing to nearly 2000 °C [28]. Under this condition, part of PE molecules and residual dispersants on the surface of MWCNT can firstly oxidized and then carbonize to form the disordered or amorphous carbons [16,29,30], and thus results in an increase in the value of ID/IG. These phenomena can be confirmed by the TG results of neat PE resin and BPs-n/PE composites as shown in Fig. 8.

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