Coating of polyamide 12 by sol-gel methodology

Author(s)

de Campos, Beatriz M. ^[1] ; Calefi, Paulo S. ^[1] ; Ciuffi, Katia J. ^[1] ; de Faria, Emerson H. ^[1] ; Rocha, Lucas A. ^[1] ; Nassar, Eduardo J. ^[1] ; Silva, Jorge V. L. ^[2] ; Oliveira, Marcelo F. ^[2] ; Maia, Izaque A. ^[2]

Affiliation

^[1] Univ Franca, BR-14404600 Franca - Brazil

^[2] Ctr Tecnol Informacao Renato Archer, BR-13069901 Campinas, SP - Brazil

• Document type: Journal article
• Source: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY; v. 115, n. 2, p. 1029-1035, FEB 2014.
• Web of Science Citations: 5

Abstract

The combination of sol-gel methodology with rapid prototyping (RP) produces functionalized 3D structures with potential applications in various fields. However, this combination has been little explored. In this paper, we used the sol-gel method to deposit vanadium isopropoxide onto polyamide (PA12) constructed by RP and pretreated with acetic acid, to obtain a functionalized substrate with new thermal, physical, and chemical properties. Vanadium isopropoxide (one, five, or ten layers) was deposited onto the PA12 piece by dip-coating. We characterized the coated PA12 by thermal analyses, X-ray diffraction, and infrared spectroscopy, which revealed that V=O and Si-O-Si groups exist on the PA12 surface. PA12 coating with vanadium isopropoxide enhanced the decomposition temperature. Differential scanning calorimetry revealed increased fusion and decomposition enthalpy as a function of the PA12 coating. Therefore, deposition of vanadium isopropoxide onto PA12 pretreated with acetic acid improves the thermal stability of PA12 prepared by RP. (AU)

• FAPESP's process: 08/09695-3 - Coating on materials by rapid prototyping using sol-gel methodology
• Grantee: Beatriz Morante de Campos
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• FAPESP's process: 12/11673-3 - Thin films obtained by spin and dip-coating using sol-gel methodology
• Grantee: Eduardo José Nassar
• Support Opportunities: Regular Research Grants