Abstract
The synthesis of epoxy resins in the presence of Bi as bismuth acrylate (BiA3) showed that the properties such as epoxide equivalent weight (eq/100 g), molecular weight, and viscosity (ηsp) increased; whereas hydrolyzable chlorine content, hydroxyl content, and refractive index decreased in the presence of BiA3. The metal forms a complex with ether linkage of epoxy resins, as evidenced from infrared spectroscopy. The presence of Bi in epoxy resins has been confirmed by scanning electron microscopy (SEM) and qualitative analysis. The glass transition temperature (Tg) of epoxy resins containing 1.18 × 10−5 and 2.8 × 10−5 molar equivalent of BiA3 is 131.58 and 190°C, respectively, and is greater than that of blank (130°C). The heat of reactions for epoxy resins containing 1.18 × 10−5 molar equivalent of BiA3, calculated by differential scanning calorimetry, is 4.75 J g. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 66: 1359–1365, 1997
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
