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Flexible Polyimide Aerogels with Dodecane Links in the Backbone Structure

Polyimide aerogels using 1,12-dodecyldiamine (DADD), 3,3′-dimethylbenzidine (DMBZ), and 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BPDA) and cross linked using 1,3,5-triaminophenoxybenzene (TAB) were synthesized. Substitution of the aromatic diamine, DMBZ, with varying amounts of the aliphatic d...

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Bibliographic Details
Published in:ACS applied materials & interfaces 2020-07, Vol.12 (29), p.33288-33296
Main Authors: Guo, Haiquan, Meador, Mary Ann B, Cashman, Jessica L, Tresp, David, Dosa, Bushara, Scheiman, Daniel A, McCorkle, Linda S
Format: Article
Language:English
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Summary:Polyimide aerogels using 1,12-dodecyldiamine (DADD), 3,3′-dimethylbenzidine (DMBZ), and 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BPDA) and cross linked using 1,3,5-triaminophenoxybenzene (TAB) were synthesized. Substitution of the aromatic diamine, DMBZ, with varying amounts of the aliphatic diamine, DADD, increases the flexibility in the backbone structure of the prepared aerogel. These aerogels are also lightweight, low density, have a low dielectric constant, and high modulus. Their overall properties (density, shrinkage, porosity, dielectric constant, water uptake, and modulus) and potential use as a conformal substrate for lightweight, high-performance antennas are discussed.
ISSN:1944-8244
1944-8252
DOI:10.1021/acsami.0c09321