TY  - JOUR
PY  - 2023//
TI  - Bio-based chitosan-based film as a bifunctional fire-warning and humidity sensor
JO  - International journal of biological macromolecules
A1  - Li, Xiaolu
A1  - Del Río Sáez, José Sánchez
A1  - Du, Shuanglan
A1  - Díaz, Raquel Sánchez
A1  - Ao, Xiang
A1  - Wang, De-Yi
SP  - ePub
EP  - ePub
VL  - ePub
IS  - ePub
N2  - Early fire detection is an efficient method to mitigate disastrous fire loss. However, developing smart low-temperature fire-warning sensors that better diminish fire hazards, especially those caused by household appliances, is still challenging. Herein, a salts-modified chitosan (salts-modified CS) based sensor with integrated fire-warning and humidity-monitoring capability is proposed using an easy assembling method. This sensor can respond to temperatures as low as 50 °C and a flame within 2 s quickly and detect relative humidity (RH) range above 50 % at 50 °C and 75 °C sensitively. This system can be reusable for multiple ignitions and works in high-humidity environments (>50 %). Furthermore, the comparison between different salts-modified CS films is carried out to elucidate the mechanism of the formation of electric current under the joint driven by temperature and humidity. Moreover, real-time temperature and RH monitoring can be achieved with a wireless transmission section. This design shows a promising approach for multifunctional CS-based sensors and paves a path to developing a new generation of smart fire-warning detectors.<p />  <p>Language: en</p>
LA  - en
SN  - 0141-8130
UR  - http://dx.doi.org/10.1016/j.ijbiomac.2023.126466
ID  - ref1
ER  -