15.1 Development of a Novel Biobased Hybrid Resin System for Hygienic Coating
(Room 237-239)
11 Apr 18
9:30 AM
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10:00 AM
Tracks:
Session 15: Bio-Based Coatings, Session 15: Experimental Designs & Concepts
Design and development of organic-inorganic hybrid materials has been the attention of paint researchers to balance aesthetics and performance requirement. In recent years, nano based coating systems is getting importance to develop hygienic coating.
In the present study, a special type of acrylic resin was synthesised via conventional solution polymerization technique. The resin was neutralized with a base to develop the resin in water based system for wider application and VOC control. This acrylic resin was further modified with nanostructured silica in presence of chitosan by a novel technique to form organic-inorganic hybrid polymer matrix. Chitosan based biopolymers are well known for several outstanding features like antimicrobial activity and deodorizing property. However, incorporation of chitosan into any polymer matrix is quite challenging due to its low reactivity. In the current work, chitosan was incorporated in the polymer matrix through the formation of an ion complex by suitable organic acid. The presence of chitosan in the polymer backbone was confirmed by spectroscopic analysis.
This hybrid polymer based coating exhibited hydrophobicity, water repellency, antimicrobial activity as well as formaldehyde adsorption ability. The degree of hydrophobicity and water repellency was controlled by the concentration of nanoparticles which was revealed through the surface morphology analysis of the film. The coating performance clearly showed significant influence of nano silica as well as chitosan in the hybrid polymer matrix.
Applications of such a facile and environmentally benign route would play a key role for the development of self-cleaning, anti-icing, anti-microbial and fouling release water-borne coating to fulfil general hygiene, safety and sustainability requirements of coating.