Poly(Amide-imide) aerogel materials produced via an ice templating process
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...
| Autores: | , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2018 |
| País: | España |
| Recursos: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/113784 |
| Acesso em linha: | https://hdl.handle.net/2117/113784 https://dx.doi.org/10.3390/ma11020233 |
| Access Level: | acceso abierto |
| Palavra-chave: | Aerogels Clay Composite materials Materials--Mechanical properties Polyamides Aerogel Composite Poly(amide-imide) Mechanical properties Argila Materials compostos Materials -- Propietats mecàniques Poliamides Àrees temàtiques de la UPC::Enginyeria dels materials |
| Resumo: | 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 |
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