Chain Extension of Poly(butylene adipate) with 2,2’-(1,4- Phenylene)-bis(2-oxazoline)
Low molecular weight poly(butylene adipate) (PBA) was synthesized by melt polycondensation. The chain extension of the prepolymers was carried out using 2,2’-(1,4-phenylene)-bis(2-oxazoline) (PBOX) as chain-extender. The influencing factors including reaction temperature, oxazoline/-COOH molar ratio, and the molecular weight of prepolymers were studied. At the optimal chain-extending condition, PBA with Mn of 38583 and Mw of 125497 was prepared. The structure of the chain-extended PBA was also characterized by the FTIR and 1H NMR.
Masayuki Nogami, Riguang Jin, Toshihiro Kasuga and Wantai Yang
S. Y. Luo et al., "Chain Extension of Poly(butylene adipate) with 2,2’-(1,4- Phenylene)-bis(2-oxazoline)", Advanced Materials Research, Vols. 11-12, pp. 387-390, 2006