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Chinese Journal of Materials Research  2014, Vol. 28 Issue (7): 555-560    DOI: 10.11901/1005.3093.2014.118
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Preparation and Characterization of Polytriazole/Carbon Nanotube Composites
Cunchao ZHANG,Liqiang WAN(),Jianwen XU,Bing GUO,Farong HUANG
Key Laboratory for Specially Functional Polymeric Materials and Related Technology of the Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237
Cite this article: 

Cunchao ZHANG,Liqiang WAN,Jianwen XU,Bing GUO,Farong HUANG. Preparation and Characterization of Polytriazole/Carbon Nanotube Composites. Chinese Journal of Materials Research, 2014, 28(7): 555-560.

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Abstract  

Azido-carbon nanotube (ACNT) was prepared by the reaction of azide group with carbon nanotube (CNT). The azidation of CNT was proved by FTIR, XPS and so on. Under the effect of ultrasonic wave, ACNT was uniformly dispersed into monomers of polytriazole (PTA), and then PTA/ACNT composites were prepared via in situ polymerization. The dispersion status of ACNT in the matrix resin and the microstructure of PTA/ACNT composites were observed by TEM. The influence of ACNT addition on glass transition temperature (Tg), thermostability parameter (Td5) and thermal conductivity (λ) of PTA/ACNT composites were also examined. The results showed that in comparison with the blank PTA resin, Tg increased 33℃, Td5 increased 15℃ in nitrogen atmosphere and 8℃ in air for the PTA/ACNT composite with 1.0% ACNT; while λ increased by 45% at 30℃ and 30% at 150℃ for the PTA/ACNT composite with 5.0% ACNT.

Key words:  composites      polytriazole      CNT      azidation      thermal properties     
Received:  13 March 2014     
Fund: *Supported by Shanghai Leading Academic Discipline Project No. B502.

URL: 

https://www.cjmr.org/EN/10.11901/1005.3093.2014.118     OR     https://www.cjmr.org/EN/Y2014/V28/I7/555

Fig.1  Preparation of the PTA/ACNT composites
Fig.2  FTIR spectra of PCNT (a) and ACNT (b)
Sample C1s /% O1s /% N1s /%
Pure CNT 97.61 2.39 0
Azido CNT 85.85 3.47 10.68
表1  PCNT和ACNT表面元素含量分析
Fig.3  XPS N1s spectrum of ACNT surface
Fig.4  DSC curves of mixtures, (a) A2/B4, (b) A2/B4/ACNT
Fig.5  Influence of ACNT loading on the Tg of PTA/ACNT composites
ACNT loading/% 0 0.1 0.3 0.5 0.8 1.0 1.5 2.0 3.0 4.0 5.0
Tg/℃ 210 233 235 235 236 243 237 234 234 235 235
表2  不同ACNT含量PTA/ACNT复合材料的Tg数据
Fig.6  TEM images of the PTA/ACNT composites, (a) 1.0 %, (b) 2.0 %
Fig.7  Comparation of TGA (air) curves of PTA/ACNT composite and PTA resin
Fig.8  Comparation of TGA (N2) curves of PTA/ACNT composite and PTA resin
Sample/ condition PTA/air PTA/N2 PTA/ACNT/air PTA/ACNT/N2
Td5 /℃ 303 315 315 330
Table3  TGA data of PTA resin and PTA/ACNT composite
ACNT loading/% 0 1.0 2.0 3.0 4.0 5.0
30℃ 0.206 0.218 0.255 0.261 0.287 0.300
150℃ 0.254 0.261 0.280 0.280 0.301 0.329
表4  PTA/ACNT复合材料的导热系数
Fig.9  Influence of ACNT loading on the conductivity of PTA/ACNT composites
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