Conductive elastomers by a new latex process

Authors: McMahan, Colleen; MALMONGE, JOSE - Sao Paulo State University (UNESP)

Submitted to: Meeting Abstract
Publication Type: Proceedings
Publication Acceptance Date: 3/8/2015
Publication Date: 8/11/2015
Citation: Mcmahan, C.M., Malmonge, J.A. 2015. Conductive elastomers by a new latex process. Meeting Abstract. International Latex Conference, Akron, Ohio, August 11-12, 2015.

Interpretive Summary:

Technical Abstract: Electrically conductive polymers such as polyaniline can be used to in production of light-emitting diodes, printed circuit board components, antistatic materials, etc. Highly filled elastomers, such as those filled with metallic powders, can also conduct electricity. However, limitations due to cost, instability, and poor processability have precluded broad market use for conductive organic polymers in many applications. Here, we describe in situ polymerization of aniline in a latex rubber matrix. This novel approach can be used to produce elastomeric conductive materials as blends of polyaniline (and its derivatives such as poly(ortho-ester aniline) (POEA) and poly(ortho-methoxyaniline) (POMA)) with natural rubber. These materials exhibit excellent polyaniline dispersion, high electrical conductivity, good cohesive strength, and flexibility. The in situ polymerization creates a material with a co-continuous two-phase morphology for optimal and tunable electrical and mechanical properties. The use of natural rubber offers a major biobased component in a low energy, low VOC process. When formulated from guayule natural rubber latex , conductive materials free of Type I latex allergens can be developed for medical applications and wearable electronics.