Dielectric elastomers based on SEBS gel: The impact of adding kraft lignin on electro-mechanical performance

• DOI: 10.3144/expresspolymlett.2024.42
• Publication Date: 2024-04-10T08:20:36Z
• Authors: Rogerio Ramos de ...; Guilherme Elias S...; Leonardo Dalseno ...; Júlia Rocha Gouveia; Demetrio Jackson ...; Danilo Justino Ca...
• Keywords: Dielectric Elastomers

Thermoplastic elastomer gels based on styrenic triblock copolymers have been increasingly used as dielectric elastomers, particularly due to the possibility of tailoring their properties composition.However, these materials a low relative permittivity, primarily attributed dipole moment.Consequently, this characteristic poses challenge for application elastomers.In work, we aim assess impact adding kraft lignin thermoplastic gels.Additionally, investigate effects dispersion viscoelastic and mechanical properties.For purpose, two types lignin: acidic alkaline (ac-KL alk-KL).The alk-KL demonstrated higher dispersibility in polymer, mainly deprotonation its structure during production process.As result, with showed 50% increase permittivity compared pristine polymer without compromising properties.Moreover, samples greater actuation strain capability response an electrical stimulus.Thus, incorporation demonstrates promise valuable reinforcement development advanced materials, enhancing electro-mechanical performance.