Sensitivity toward humidity, response and recovery time, and reproducibility behaviors of a novel copolymer sensor, obtained by oxidative chemical polymerization of o-phenylenediamine and aniline using D-camphor-10-sulfonic acid dopant, were reported. It is a novel copolymer, and there are very few studies available concerning its synthesis and humidity sensing applications. Humidity-sensitive properties of the copolymer were tested by measuring the resistance of the fabricated films, and good humidity sensitivity was obtained. Moreover, a decrease in resistance with the increase in humidity was observed. Compared to polyaniline (PANI), the humidity sensing property of the copolymer was found to show quicker response and recovery time, higher reproducibility, and higher sensitivity. However, PANI alone exhibited relatively poor sensing property. The response time for the copolymer films at the relative humidity ranging from 11 to 97% was about 38 s, and the corresponding recovery time was about 11 s. The value of sensitivity was about 10. These results indicate excellent sensing character of the new type of copolymer humidity sensors. The obtained sensor is expected to exhibit good humidity sensing behavior in moisture-containing environment.

中文翻译：

---

基于聚（邻苯二胺-共-苯胺）球形纳米颗粒的快速湿度传感器

报道了使用 D-樟脑-10-磺酸掺杂剂通过邻苯二胺和苯胺的氧化化学聚合获得的新型共聚物传感器的湿度敏感性、响应和恢复时间以及再现性行为。它是一种新型共聚物，关于其合成和湿度传感应用的研究很少。通过测量制备的薄膜的电阻测试共聚物的湿敏性能，获得了良好的湿敏性。此外，观察到电阻随着湿度的增加而降低。与聚苯胺 (PANI) 相比，发现共聚物的湿度传感特性显示出更快的响应和恢复时间、更高的重现性和更高的灵敏度。然而，单独的 PANI 表现出相对较差的传感性能。共聚物薄膜在相对湿度范围为 11% 至 97% 时的响应时间约为 38 s，相应的恢复时间约为 11 s。灵敏度值约为10。这些结果表明新型共聚物湿度传感器具有优良的传感特性。所获得的传感器有望在含湿环境中表现出良好的湿度传感性能。