The effect of extended polymer chains on the properties of transparent multi-walled carbon nanotubes/poly(methyl methacrylate/acrylic acid) film.
Optically transparent and electrically conductive thin films composed of multi-walled carbon nanotube (MWCNT) reinforced polymethyl methacrylate/acrylic acid (PMMA/AA) were fabricated using a wire coating technique. Poly(acrylic acid) controls the level of MWCNT dispersion in aqueous mixtures and retains the well-dispersed state in the polymer matrix after solidification resulting from extended polymer chains by adjusting the pH value. The exfoliating the MWCNT bundles by extended polymer chains results in the excellent dispersion of MWCNT. It causes a lower surface electrical resistance at the same MWCNT content. The hydrophilic functional groups (-COO( - )NA( + )) also caused a decrease in the crystallization of PMMA and led to an increase in the transmittance.
Huang
Yuan-Li
YL
Department of Chemical Engineering, National Tsing-Hua University, Hsin-Chu 30043, Taiwan.
Tien
Hsi-Wen
HW
Ma
Chen-Chi M
CC
Yu
Yi-Hsiuan
YH
Yang
Shin-Yi
SY
Wei
Ming-Hsiung
MH
Wu
Sheng-Yen
SY
D017097:Electric Impedance; D006863:Hydrogen-Ion Concentration; D037742:Nanotubes, Carbon / Q000737:chemistry*; D056951:Photoelectron Spectroscopy; D011109:Polymethacrylic Acids / Q000737:chemistry*; D012972:Sodium Hydroxide / Q000737:chemistry; D013059:Spectrum Analysis, Raman; D013499:Surface Properties; D014961:X-Ray Diffraction
D037742:Nanotubes, Carbon; D011109:Polymethacrylic Acids; D012972:Sodium Hydroxide