PAPERmaking! FROM THE PUBLISHERS OF PAPER TECHNOLOGY Volume 3, Number 2, 2017
Synthesis of bromo-cardanol novolac resins and evaluation of their effectiveness as flame retardants and adhesives for particleboard, Oleg Shishlov et al , Journal of Applied Polymer Science , online. The synthesis of bromo derivatives cardanolic novolac resins (BCNR) using infrared, thermogravimetric analysis, differential scanning calorimetry, gel permeation chromatography, nuclear magnetic resonance 1H and 13C methods was studied. The mechanism of thermal degradation of BCNR is proposed. It is shown, that particleboards manufactured using PU-(BCNR) as an adhesive are materials with enhanced flame retardant properties, meeting the requirements of P7 class to EN 312 (especially durable moisture-resistant particleboards) and the requirements of the emission class Super E0. The bromine in the structure of the cardanol-containing polyurethane binder allows achieving both high physical and mechanical characteristics of the particleboards and resistance to flame. Improving Water Resistance of Soy-Based Adhesive by Vegetable Tannin, Saman Ghahri et al , Journal of Polymers and the Environment , online. In this research tannic acid was used to prepare soy-based adhesives for making plywood and fibre board. The different resin formulations were analyzed by Differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and its derivative as a function of temperature (DTG) and Fourier Transform Infra-red (FTIR) spectroscopy. The results showed that the addition of tannic acid to soy-based adhesive decreased soy-based adhesive viscosity and its pH. The mechanical and physical properties such as MOR, MOE, IB, and water resistance of fiberboard were improved, by adding tannic acid to the soy-based adhesive.
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Technical Abstracts
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