A new type poly(AA‐co‐β‐CD‐A‐co‐TPEG) (PACD) copolymer was prepared by the copolymerization of a novel monovinyl β‐cyclodextrin monomer (β‐CD‐A), acrylic acid, and isoprenyl oxy poly(ethylene glycol) (TPEG‐2400). This copolymer could be used as dispersant for multiwalled carbon nanotubes (MWCNTs), which exhibit an excellent dispersion ability. This study mainly investigated the dispersing behavior of the PACD as well as the best ratio between these dispersants and MWCNTs. Transmission electron microscopy was employed to observe the morphology of the dispersed of MWCNTs. ultraviolet–visible–near infrared spectra were utilized to determine the dispersion of MWCNTs and the optimum concentration of PACD. It was found that the polycarboxylate superplasticizer decreased MWCNTs aggregative tendency in water but not as well as PACD. Moreover, the optimum mass ratio of the PACD to the MWCNTs is 5:1. In addition, the effect of PACD on the dispersion ability of MWCNTs was evaluated in cement samples. Our results indicated that MWCNTs could still disperse well with the help of PACD even with the presence of cement.
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Meng et al. (2018) studied this question.
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