Engineering of films of disperse red 19 based polyurethanes containing poly(ethylene glycol) or polydimethylsiloxane segments with controlled morphology. Issue 6 (18th August 2021)

• Record Type: Journal Article
• Authors: Caldera-Villalobos, Martín; Álvarez-Venicio, Violeta; Arcos-Ramos, Rafael; Rivera, Margarita; Carreón-Castro, María del Pilar
• Is Part Of: International journal of polymer analysis and characterization. Volume 26:Issue 6(2021)
• Page Start: 532
• Page End: 543
• Publication Date: 2021-08-18
• Subjects: Spin-coating -- azo dyes -- push-pull molecules -- morphology characterization; Polymers -- Analysis -- Periodicals; 547.705
• DOI: 10.1080/1023666X.2021.1917902
• Languages: English
• ISSNs: 1023-666X

Abstract

Abstract: In this work, we report the synthesis of polyurethane derivatives from Disperse Red 19 and hexamethylene diisocyanate as well as polyurethanes containing poly(ethylene glycol) and polydimethylsiloxane segments. Polyurethanes were incorporated as films on glass substrates by spin-coating. The polyurethane containing poly(ethylene glycol) fragments formed the best quality films with a height value of 206 nm, and roughness of 25.6 nm. Films of polyurethane containing polydimethylsiloxane segments exhibit quasi-spherical agglomerates on the surface with an approximate size of 0.6 μm. The polyurethane obtained from Disperse Red 19 and hexamethylene diisocyanate formed rose-like agglomerates with a size of 10 μm.