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RSC Advances
Page 6 of 6
DOI: 10.1039/C5RA15321B
Journal Name
ARTICLE
11 K. Jia, M. Xu, R. Zhao and X. Liu, Polym. Int., 2011, 60, 414-
421.
12 H. Guo, Y. Zhan, Z. Chen, F. Meng, J. Wei and X. Liu, J. Mater.
Conclusions
Chem. A, 2013, 1, 2286-2296.
A series of phthalonitrile monomers with o, m, p-dihydroxybenzene 13 M.Z. Xu, J.Q. Hu, X.Q. Zou, M.D. Liu, S.H. Dong, Y.K. Zou and
X.B. Liu , J. Appl. Polym. Sci., 2013, 129, 2629-2637.
14 M. Laskoski, D.D. Dominguez and T.M. Keller, J. Polym. Sci.
Pol. Chem., 2013, 51, 4774-4778.
isomers were synthesized by a nucleophilic displacement reaction.
The XRD results show that the unit cells of the o-, m-, p- monomers
are monoclinic, triclinic and monoclinic, respectively. The melting
temperatures of o-BDB and m-BDB polymers are around 183 oC,
15 Z. Brunovska, R. Lyon and H. Ishida, Thermochim. Acta, 2000,
357, 195-203.
lower than p-BDB polymers by 68 oC. Curing behaviors of three 16 G.P. Cao, W.J. Chen, J.J. Wei, W.T. Li and X.B. Liu, Express
Polym. Lett., 2007, 1, 512-518.
17 R. Du, W. Li and X. Liu, Polym. Degrad. Stabil., 2009, 94
2178-2183.
18 H.T. Sheng, X.G. Peng, H. Guo, X.Y. Yu, C.C. Tang, X.W. Qu
and Q.X. Zhang, Mater. Chem. Phys., 2013, 142, 740-747.
monomers with 4,4′-diaminodiphenyl ether indicate that o-BDB and
,
m-BDB monomers have lower curing temperatures and broader
processing windows compared with the p-BDB monomer. Thermal
and dynamic mechanical analyses reveal that o-BDB and m-BDB
polymers exhibit more excellent thermal and thermal-oxidative 19 T.M. Keller and D.D. Dominguez, Polymer, 2005, 46, 4614-
4618.
stability and mechanical property than p-BDB polymers. All the
three polymers have a high glass-transition temperature (> 380 oC).
Therefore, based on excellent processability, superior thermal
stability and outstanding mechanical property, o-BDB and m-BDB
polymers are good candidates as high-temperature phthalonitrile
polymers for applications such as structural components, high-
temperature adhesives and packing materials in aerospace and
microelectronic industries.
20 Y. Yang, Z. Min and L. Yi, Polym. Bull., 2007, 59, 185-194.
21 D. Augustine, D. Mathew and C. P. R. Nair, Polym. Int., 2012,
62, 1068-1076.
22 J.G. Young and W. Onyebuagu, J. Org. Chem., 1990, 55, 2155-
2159.
23 S.B. Sastri and T. M. Keller, J. Polym. Sci. Pol. Chem., 1999,
37, 2105-2111.
24 F.H. Zhao, R.J. Liu, C. Kang, X.Y. Yu, K. Naito, X.W. Qu and
Q.X. Zhang, RSC Adv., 2014, 4, 8383.
25 T.M. Keller, J. Polym. Sci. Pol. Chem., 1988, 26, 3199-3212.
26 X. Yang, Y. Lei, J. Zhong, R. Zhao and X. Liu, J. Appl. Polym.
Sci., 2011, 119, 882-887.
27 A. Badshah, M.R. Kessler, Z. Heng and A. Hasan, Polym. Int.,
2014, 63, 465-469.
Acknowledgements
This work was supported by Program for Changjiang Scholars
and Innovative Research Team in University (IRT13060) and
Natural Science Foundation of Hebei Province, China
(E2014202033).
28 D.D. Dominguez and T.M. Keller, Polymer, 2007, 48, 91-97.
29 X.G. Peng, H.T. Sheng, H. Guo, K. Naito, X.Y. Yu, H.L. Ding,
X.W. Qu and Q.X. Zhang, High Perform. Polym., 2014, 26
837-845.
,
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