TY - JOUR
T1 - Synthesis and properties of a novel high temperature pyridine-containing phthalonitrile polymer
AU - Xi, Zhenjie
AU - Chen, Xinggang
AU - Yu, Xiaoyan
AU - Ma, Yuanhui
AU - Ji, Puguang
AU - Naito, Kimiyoshi
AU - Ding, Huili
AU - Qu, Xiongwei
AU - Zhang, Qingxin
N1 - Publisher Copyright:
© 2016 Wiley Periodicals, Inc.
PY - 2016/12/15
Y1 - 2016/12/15
N2 - A novel pyridine-containing aromatic phthalonitrile monomer, 2,6-bis[4-(3,4-dicyanophenoxy)benzoyl]pyridine (BCBP) was synthesized from the nitro displacement of 4-nitrophthalonitrile by the phenoxide of 2,6-bis (4-hydroxybenzoyl)pyridine (BHBP). 4-(Aminophenoxy) phthalonitrile (APPH) was selected to promote the curing reaction, and the curing behavior has been investigated by differential scanning calorimetric (DSC), suggesting a wide processing window about 64 °C. Different curing additive concentrations resulted in polymers with different crosslinking degrees and subsequently influenced the performance of resins. The resulting BCBP polymer exhibited high glass transition temperatures exceeding 400 °C, outstanding thermo-oxidative stability with weight retention of 95% at 530 °C, indicating a significant improvement in thermal properties endowed by pyridine units. Additionally, it also showed a lower overall water absorption after submersion in boiling water for 50 hours.
AB - A novel pyridine-containing aromatic phthalonitrile monomer, 2,6-bis[4-(3,4-dicyanophenoxy)benzoyl]pyridine (BCBP) was synthesized from the nitro displacement of 4-nitrophthalonitrile by the phenoxide of 2,6-bis (4-hydroxybenzoyl)pyridine (BHBP). 4-(Aminophenoxy) phthalonitrile (APPH) was selected to promote the curing reaction, and the curing behavior has been investigated by differential scanning calorimetric (DSC), suggesting a wide processing window about 64 °C. Different curing additive concentrations resulted in polymers with different crosslinking degrees and subsequently influenced the performance of resins. The resulting BCBP polymer exhibited high glass transition temperatures exceeding 400 °C, outstanding thermo-oxidative stability with weight retention of 95% at 530 °C, indicating a significant improvement in thermal properties endowed by pyridine units. Additionally, it also showed a lower overall water absorption after submersion in boiling water for 50 hours.
KW - high performance polymers
KW - thermal properties
KW - thermosets
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U2 - 10.1002/pola.28278
DO - 10.1002/pola.28278
M3 - Article
AN - SCOPUS:84992520674
SN - 0887-624X
VL - 54
SP - 3819
EP - 3825
JO - Journal of Polymer Science, Part A: Polymer Chemistry
JF - Journal of Polymer Science, Part A: Polymer Chemistry
IS - 24
ER -