INVESTIGATION OF BIO-BASED PAPER COATINGS CONTAINING NATURAL PIGMENT AND THEIR HEAT RESISTANCE PROPERTIES

Cellulosic paper which is created from cellulose-rich wood fibers has a highly flammable property and can easily catch fire. Some studies are being conducted to improve and increase the flame-retardant properties of paper, but there are currently very few studies that apply flame retardant coatings on sheet paper. By coating the paper surface using some bio-based coating materials containing natural pigments, oxygen can be prevented from reaching cellulose and the rapid ignition of the paper can be delayed. In this study, paper coating materials were prepared using three different types of pigments (PCC, zeolite and bentonite) and coated on 80 g/m2 base paper. Thermogravimetric analysis (TGA) measurements were performed on the coatings. Prints were made on the coatings with an Epson Stylus Photo R3000 digital printing machine, and printing color measurements were made using an X-Rite eXact spectrophotometer. The surface morphology of the coatings was examined, and the limited oxygen index (LOI) was determined. As a result of the investigations, it has been determined that the coatings created increase their flame retardancy and have a good hydrophilia. At the same time, when the printing parameters were examined, it was determined that the measured values were in accordance with ISO 12647-2 standards.