Chain Extension of Poly(butylene adipate) with 2,2’-(1,4- Phenylene)-bis(2-oxazoline)


Article Preview

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.



Advanced Materials Research (Volumes 11-12)

Main Theme:

Edited by:

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

Online since:

February 2006




[1] R. Hasegawa and K. Fukunaga: Jpn. Pat. (Kokai Tokyo Koho) 06, 256461 (1994).

[2] Y. Iwaya and M. Nishinohara: Jpn. Pat. (Kokai Tokyo Koho) 06, 322091 (1994).

[3] K. Kawamoto and M. Chino: Jpn. Pat. (Kokai Tokyo Koho) 09, 71638.

[4] J.A. Loontjens and B.J.M. Plum: WO 9847940 (1997).

[5] T. Loontjens, K. Pauwels and F. Derks: J. Appl. Polym. Sci. Vol. 65 (1997), p.1813.

[6] M.K. Akkapeddi and J. Gervasi: Polym. Prepr. Vol. 29 (1988), P. 567.

[7] J. Tuominen and J. V. Seppälä: Macromolecules Vol. 33 (2000), p.3530.

[8] L. Nēry, H. Lefbvre and A. Fradet: Macromol. Chem. Phys. Vol. 204 (2003), p.1755. Fig. 1. 1H NMR spectrum (a) and IR spectrum (b) of the chain-extended PBA-2 (b).