Natural Rubber Latex (NRL) obtained from Hevea brasiliensis is a biocompatible electrically insulating material with exceptional mechanical properties. Poly(3,4-ethylene dioxythiophene) poly(styrene sulfonate), PEDOT:PSS, on the other hand, is a biocompatible highly conductive organic material with poor flexibility. We hereby introduce a blend of NRL/PEDOT:PSS (N/P). This study involved different N/P volume ratios and temperatures of curing aiming at an optimal combination of good flexibility and conductivity. Low-temperature annealing, at 60 °C, dries and cures the blend in a few minutes and improves its tensile strength and conductivity. The blend can stretch more than 700% of its initial length and presents a good gauge factor and small resistance variation (R/R₀) for ΔL/L₀ of up to 100%. Among the different N/P concentrations, the membranes of an N/P ratio of 1/4 and those thermally cured have the most promising conductive flexible properties for bioelectronic applications.

中文翻译：

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天然橡胶胶乳与PEDOT：PSS的柔性导电混合物

得自巴西橡胶树的天然橡胶胶乳（NRL）是具有出色机械性能的生物相容性电绝缘材料。另一方面，聚（3,4-乙撑二氧噻吩）聚苯乙烯磺酸盐，PEDOT：PSS是生物相容性高，导电性差的有机材料。我们在此介绍NRL / PEDOT：PSS（N / P）的混合物。这项研究涉及不同的N / P体积比和固化温度，旨在获得良好的柔韧性和导电性的最佳组合。60°C的低温退火可在几分钟内干燥和固化共混物，并提高其拉伸强度和导电率。共混物可以拉伸其初始长度的700％以上，并且具有良好的应变系数和较小的ΔL/ L电阻变化（R / R ₀）₀，最高为100％。在不同的N / P浓度中，N / P比为1/4的膜和经热固化的膜在生物电子应用中具有最有希望的导电挠性。