Preparation of high tensile strength modified cellulose-based strippable coating and its application on radioactive decontamination at low-temperature

In order to improve the mechanical properties of ethyl cellulose (EC) film, isophorone diisocyanate (IPDI) was used as a modifier to crosslink with hydroxyl groups on EC. Then castor oil was used to crosslink with unreacted and free -NCO to enhance the modification of EC film. The tensile strength and strain of modified EC (mEC) films were 48.54 MPa and 15.40%, which were 886% and 740% higher than those of EC film, respectively. The mEC formed a dense 3D network structure, and the film’s mechanical properties were improved comprehensively. The mEC film was completely decomposed at high temperatures with a small residual weight and high volume reduction rate. At − 10–10 ℃, the decontamination rate of 304stainless steel, glass, ceramic tiles, marbles, and cement contaminated with uranyl nitrate can reach 57.09∼91.25% without any decontamination aid.