Acrylate-Modified Aqueous Polyurethane Based on Oxime–Carbamate Structure with Transparent, Healable, and Fluorescent Properties

Abstract

Acrylate-modified aqueous polyurethane has become a widely used material due to its good physical and versatile chemical properties. However, owing to damage resulting from daily use, which often limits polymer performance, it is important to prepare a transparent and repairable polyurethane material. In this work, an acrylate-modified aqueous polyurethane based on the reversible structure of oxime–carbamate of butanedione oxime (POU) was prepared. The visible-light transmittance of the POU film could exceed 70%; its tensile strength and elongation at break could reach 3.0 MPa and 493%, respectively, and the POU film had a tensile strength of 3.9 MPa and elongation at break of 589% after repair. In addition, the POU has adjustable fluorescence properties, which makes this material suitable for potential application in the field of information encryption.

Rosin-Modified Polyurethane Elastomers with Room-Temperature Self-Healing Ability, High Strength, and Recyclability Based on Oxime Dynamic Bonds

“…Meanwhile, it is interesting to note that no cross-linking agent was added during the preparation of BPU- X % AP. It can be clearly distinguished that the BPU- X % AP of this work is higher than those materials with or without cross-linkers both in stress and strain. − …”

“…(b) Stress–strain curves of BPU- X % AP elastomers. (c) Comparison of the stress and strain for BPU- X % AP and other PU elastomers with oxime-urethane bonds was recently reported in the literature: S1; S2; S3; S4; S5; S6; S7; S8; S9 (d) Images of the notched BPU-10% AP during stretching. (e) Stress–strain curves of the unnotched and notched BPU-10% AP sample.…”