Nylon 610/functionalized multiwalled carbon nanotube composite prepared from in-situ interfacial polymerization
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- Nylon 610/functionalized multiwalled carbon nanotube composite prepared from in-situ interfacial polymerization
- Jeong, Jae-Yong; Lee, Hwa-Jeong; Kang, Sang-Wook; Tan, Loon-Seng; Baek, Jong-Beom
- Carbon nanotubes; Composites; Functionalization; Interfacial polymerization; Multiwalled carbon nanotube; Nanotechnology; Nylon; Nylon 610
- Issue Date
- JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, v.46, no.18, pp.6041 - 6050
- Pristine multiwalled carbon nanotubes (P-MWNTs) were functionalized with 4-chlorobenzoic acid via "direct" Friedel-Crafts acylation in polyphosphoric acid (PPA)/phosphorous pentoxide (P2O5) medium. The resultant 4-chlorobenzoyl-functionalized MWNTs (F-MWNTs) were soluble in chlorinated solvents such as dichloromethane, chloroform, and carbon tetrachloride. A large scale of nylon 610/F-MWNT composite could be conveniently prepared by in situ interfacial polymerization of 1, 6-hexamethylenediamine (HMDA) in an aqueous phase, and sebacoyl chloride with F-MWNTs in an organic phase. Similarly, nylon 610/P-MWNT composite was also prepared for comparison. The state of F-MWNTs dispersion in nylon 610 matrix was distinctively better than that of P-MWNTs, which could be clearly discerned by both naked eye and scanning electron microcopy (SEM). As a result, the tensile strength of nylon 610/F-MWNT composite was 4.9-fold higher than that of nylon 610/P-MWNT composite.
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