Synthesis and evaluation of catalytic curing behavior of novel nitrile-functionalized benzoxazine for phthalonitrile resins
| Autor: | Shailendra Kumar Shukla, D. N. Tripathi, Arvind Kumar Pandey, Ajit Shankar Singh, N. Eswara Prasad |
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| Rok vydání: | 2017 |
| Předmět: |
Polymers and Plastics
Nitrile technology industry and agriculture 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Catalysis Phthalonitrile chemistry.chemical_compound Nucleophile chemistry Polymer chemistry Water uptake Materials Chemistry Molecule Addition polymer 0210 nano-technology Curing (chemistry) |
| Zdroj: | Polymer Bulletin. 75:3781-3800 |
| ISSN: | 1436-2449 0170-0839 |
| DOI: | 10.1007/s00289-017-2235-4 |
| Popis: | In the present embodiment, bisphthalonitrile resin has been cured using synthesized novel bisphenyl nitrile-containing benzoxazine (NBZ) vis-a-vis traditional curing agents such as 4-(3′aminophenoxy)diphenyl sulphone (m-DDS) and amino-functionalized phthalonitrile (APN) to study the curing efficacy coupled with processing window and mechanism of curing. It has been established by FT-IR and DSC that NBZ molecules cure the bisphthalonitrile resin matrix by formation of free phenolic groups which act as nucleophile triggering the curing reaction through nitrile–nitrile addition polymerization reaction. Additionally, it has been seen that NBZ-catalyzed phthalonitrile resin curing system showed better processing window in comparison to m-DDS- and APN-catalyzed system. Considering the end-user applications, the NBZ- and m-DDS-cured resins have also been studied for their TG, DMA, water uptake, thermo-oxidative and dielectric properties. |
| Databáze: | OpenAIRE |
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