Design and synthesis of waterborne light-responsive cellulose nanocrystal/fluorinated polyacrylate films toward oil/water repellent and self-healing properties

The development of environmentally friendly waterborne polymeric materials is becoming critical today. In this study, a kind self-healing cellulose nanocrystal/fluorinated polyacrylate based on the reversible photo-induced dimerization coumarin groups was prepared via RAFT-mediated Pickering emulsion polymerization using nanocrystal (CNC) particles modified with light-responsive amphiphilic copolymers as stabilizers. Emulsion and latex film properties were significantly varied in dependence amount 7-(2-methacryloyloxyethoxy)-4-methylcoumarin (CMA) monomer. Hydrophobic, oleophobic mechanical dynamic response to UV light. maximum water contact angle CH2I2 increased by 6.1° 2.3°on irradiation light at 365 nm, respectively. tensile strength initially increasing CMA increased, from 0 up 4 wt%, then decreased. value 3.0 MPa 6.4 after reaction activated nm Results atomic force microscope (AFM) energy dispersive X-ray spectrometer (EDX) revealed that possessed roughness structure fluorine had remarkable enrichment film-air interface. Moreover, films showed an excellent surface scratch ability owing groups, within polymer extensively investigated FT-IR differential scanning calorimetry (DSC). fruitful outcomes indicated exhibited greatly potential application smart material.