Submitted to: Industrial Crops and Products International Conference Proceedings
Publication Type: Review Article
Publication Acceptance Date: October 23, 1994
Publication Date: N/A
Technical Abstract: Printing ink vehicles that did not require petroleum components were prepared from modified vegetable oil. The apparent weight average molecular weight (Mw) of vehicles made from representative vegetable oils, such as soybean, sunflower, cottonseed, safflower and canola oils were compared by gel-permeation chromatography (GPC), and a correlation between viscosity and apparent Mw of these vehicles was established. Nearly 150 paste news inks were formulated using modified vegetable oils. Physical properties of these inks meet or exceed the industry standards for lithographic and letterpress newsprint applications. Elimination of petroleum-based resin and reduced pigment requirements, due to the light vehicle color, provide a competitively priced alternative to petroleum- based inks. These ink vehicles along with the commercial ones were subjected to biodegradation. Results show that the vegetable oil vehicles degrade faster and more completely than commercial soy or mineral oil base vehicles. Fermentations were allowed to proceed for 5, 12 and 25 days. Both mono- and mixed cultures of microorganisms which are commonly found in soil were used. Greater increase in biodegradation with time was observed for our vehicles than the commercial vehicles. In 25 days commercial mineral oil based vehicles degrade 17-27%, while commercial partial soy oil based vehicles degrade 58-68% and our 100% soy oil based vehicles degrade 82-92%.