Materials
A lampblack-type Chinese ink was purchased from Sino-Japanese
joint venture, Anhui Hongxing ink Co. Ltd. This Chinese ink
is very homogeneous without obvious coagula. MWCNTs, produced
by chemical vapor deposition, with an average length of
50 lm and diameters ranging from 8 to 15 nm were supplied
by Timesnano (Chendu Organic Chemicals, China). PVA powder
(Mw 70,000–100,000, Aldrich) was dissolved into deionized
water at 80 C and stirred for 4 h to obtain clear PVA solutions with
concentrations of 1.0, 2.5 and 5.0 wt%. All chemicals and the Chinese
ink were used as received without any purification or
pretreatment.
fabrication of CNT/polymer composites with high CNT
content is also a difficult task. Therefore, developing a low-cost
and simple method to utilize CNTs in on a practicable scale is
always desirable.