1. Poly(Amide-imide) Aerogel Materials Produced via an Ice Templating Process
- Author
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David A. Schiraldi, Eric M. Arndt, Matthew D. Gawryla, Miguel Sánchez-Soto, Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica, and Universitat Politècnica de Catalunya. POLY2 - Polyfunctional polymeric materials
- Subjects
Tertiary amine ,Argila ,Polyamides ,Mechanical properties ,02 engineering and technology ,mechanical properties ,01 natural sciences ,lcsh:Technology ,poly(amide-imide) ,Materials -- Propietats mecàniques ,chemistry.chemical_compound ,Copolymer ,General Materials Science ,Imide ,Aerogel ,lcsh:QC120-168.85 ,chemistry.chemical_classification ,Composite materials ,Polymer ,021001 nanoscience & nanotechnology ,Polyamide ,Amine gas treating ,0210 nano-technology ,Materials--Mechanical properties ,lcsh:TK1-9971 ,Materials science ,aerogel ,Composite ,Enginyeria dels materials [Àrees temàtiques de la UPC] ,010402 general chemistry ,Article ,composite ,clay ,lcsh:Microscopy ,Materials compostos ,lcsh:QH201-278.5 ,lcsh:T ,Poliamides ,Aerogels ,0104 chemical sciences ,Montmorillonite ,chemistry ,Chemical engineering ,lcsh:TA1-2040 ,Clay ,lcsh:Descriptive and experimental mechanics ,lcsh:Electrical engineering. Electronics. Nuclear engineering ,Poly(amide-imide) ,lcsh:Engineering (General). Civil engineering (General) - Abstract
Low density composites of sodium montmorillonite and poly(amide-imide) polymers have been created using an ice templating method, which serves as an alternative to the often-difficult foaming of high temperature/high performance polymers. The starting polymer was received in the poly(amic acid) form which can be cured using heat, into a water insoluble amide-imide copolymer. The resulting materials have densities in the 0.05 g/cm3 range and have excellent mechanical properties. Using a tertiary amine as a processing aid provides for lower viscosity and allows more concentrated polymer solutions to be used. The concentration of the amine relative to the acid groups on the polymer backbone has been found to cause significant difference in the mechanical properties of the dried materials. The synthesis and characterization of low density versions of two poly(amide-imide) polymers and their composites with sodium montmorillonite clay are discussed in the present work.
- Published
- 2018