“Self-Foaming” Poly(phenylquinoxaline)s for the Designing of Macro and Nanoporous Materials

• Published in: Macromolecules Vol. 41; no. 12; pp. 4205 - 4215
• Main Authors: Merlet, Samuel, Marestin, Catherine, Romeyer, Olivier, Mercier, Régis
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 24.06.2008
• Subjects: Applied sciences; Chemical Sciences; Exact sciences and technology; Organic polymers; Physicochemistry of polymers; Polycondensation; Polymers; Preparation, kinetics, thermodynamics, mechanism and catalysts; Film; Aromatic polymer; Nanoporous materials; Thermal reaction; Diphenols; Porous material; Sulfone copolymer; Pore size; Aromatic copolymer; Sulfone polymer; Solution polycondensation; Cyclopolymerization; Quinoxaline derivative copolymer; Experimental study; Functional polymer; Structure processing relationship; Random copolymer; Chemical modification; Cyclopolymer; Quinoxaline derivative polymer; Aminosulfone; Decarboxylation; Morphology; Preparation; Copolycondensation; Carbonation; Block copolymer; Macroporosity
• ISSN: 0024-9297; 1520-5835
• DOI: 10.1021/ma800228u

This work concerns the investigation of porous poly(phenylquinoxaline)s (PPQ) films. The approach described relies on the in situ generation of foaming agents during the thermal curing of dense thin films of PPQ-containing thermolabile groups. For this purpose, a series of phenol-containing PPQ has been previously synthesized and then modified by grafting thermolabile tert-butyl carbonate groups (Boc) via a reaction involving the phenol groups. Thin dense films obtained by a solution casting method were thermally treated at different temperatures. The morphology of the resulting porous materials, characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), is discussed in relation with the chemical structure of the polymers and to the thermal treatment conditions as well.