Synthesis and characterization of new stabilizers with optimal molecular weight

Over 2 x 10(8) tons of polymers are produced every year, and a large portio n of polymers faces the degradation problem. There are many effective metho ds to protect polymers against degradation and the addition of stabilizers to polymer remains the most convenient and effective way of enhancing polym er life and performance. In this article, a series of effective stabilizers with optimal molecular weight (MW), including common, monomeric and polyme ric stabilizers (antioxidant and light stabilizer) were synthesized using i socyanation, controlled isocyanation, hydrosilylation, epoxide addition, ma croreaction of stabilizing functional compounds and polymerization of monom eric stabilizers. The structure and performance of these new stabilizers we re characterized by using IR, NMR, MS, UV-spectra, XPS and elemental analys is. The current development of stabilizer synthesis was also reviewed.