Paper Title
IN SITU FUNCTIONALIZATION OF BIO-BASED POLYMER NANOCAPSULES CONTAINING ESSENTIAL OIL BY MINIEMULSION POLYMERIZATION USING POLYMERIZABLE SURFACTANT FOR ANTIBACTERIAL COATING

Abstract
Significant accumulations of fossil-based polymer particles, often not biodegradable or biocompatible, constitute a severe worldwide issue. As a result, biopolymers derived from renewable monomers have gained an immense amount of attention.Here, the bio-based polymer is implemented to encapsulate essential oil inminiemulsion polymerization. The polymerizable surfactant was used insteadof the commercial emulsifier, which can be further polymerized and mainly anchored on the polymer particle surface. Poly(2-methacryloyloxy dodecyl dimethyl ammonium chloride-4-methacryloyloxy benzophenone)-iodide (P(QAC12-BP)-I) contains quaternary ammonium and benzophenone groups for antibacterial and UV-activated coating, respectively, was synthesized via solution iodine transfer polymerization.Eugenol methacrylate (EuMA) was created before miniemulsion polymerization by esterifying eugenol and methacrylic anhydride. Then, EuMA was utilized as a biopolymer shell of nanocapsules containing linalool, an essential oil model. The miniemulsion polymerization progressed smoothly and without coagulation, and the polymerization reached high conversion (90%) after 8 h. The linalool nanocapsules with excellent encapsulation effectiveness (over 70%) were spherical, with a size range of approximately 400 nm and a high positive charge (+80 mV). Because of the BP segment on nanocapsule surfaces, they can be coated with several substrates via a UV-activated covalent bond. Furthermore, the nanocapsules have a significant antibacterial potential due to the presence of the QAC12 segment on particle surfaces. Keywords: Bio-Based Polymer Nanocapsules, Miniemulsion Polymerization, Antibacterial Coating