Synthesis of the strongly acidic sulfonated condensed polynuclear aromatic (S-COPNA) resins using aromatic aldehydes as cross-linking agents

Autor:	Kiyoshi Tanemura, Takaaki Horaguchi, Tsuneo Suzuki, Yoko Nishida
Rok vydání:	2011
Předmět:	Materials science integumentary system Polymers and Plastics chemistry.chemical_element Sulfuric acid General Chemistry Condensed Matter Physics Nitrogen Benzaldehyde chemistry.chemical_compound chemistry Materials Chemistry Organic chemistry Pyrene
Zdroj:	Polymer Bulletin. 68:705-719
ISSN:	1436-2449 0170-0839
DOI:	10.1007/s00289-011-0574-0
Popis:	In the presence of 5 wt% of p-toluenesulfonic acid (TsOH), the mixture (TPA/PR = 1.5/1.0) of pyrene (PR) and terephthalaldehyde (TPA) was heated at 160 °C for 1.5 h under nitrogen to give the condensed polynuclear aromatic (COPNA) resin. It was transformed to an infusible and insoluble solid by further heating at 300 °C for 1 h. The obtained material was treated with sulfuric acid at 80 °C for 15 h under nitrogen to give the sulfonated COPNA(PR,TPA) resin. The sulfonated COPNA(PR,BA/TPA) resin was prepared by heating the mixture of PR, benzaldehyde (BA), and a small amount of TPA in the presence of TsOH followed by the treatment with sulfuric acid. The sulfonated COPNA(PR,TPA) resin was reused without significant loss of activities, and exhibited the higher performance than conventional solid acids.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f651596f9ffd64bb1fdf3f6c8e870ff9 https://doi.org/10.1007/s00289-011-0574-0 Zobrazit plný text záznamu Full text from SpringerLink