Design, synthesis and characterization of novel poly(urethane-urea) based on a macrodiol from poly(lactic acid) and poly(p-dioxanone)

作者：Luo Yan Feng^*; Huang Mei Na; Wang Su Jun; Fu Ya; Wang Yuan Liang

来源：Chinese Chemical Letters, 2011, 22(2): 237-240.

DOI：10.1016/j.cclet.2010.10.026

• Poly(urethane-urea)
• Polylactic acid
• p-Dioxanone
• Butanediamine
• Shape memory polymer

A series of novel poly(urethane-urea) (PUU) was synthesized from poly(lactide-co-p-dioxanone) macrodiol (HO-P(LA-co-PDO)-OH), hexamethylene diisocyanate (HDI) and butanediamine (BDA). The obtained PUU, which is recorded as P(LA-co-PDO)-PUU here, may demonstrate enhanced phase separation and thus improved shape memory property. FTIR was employed to characterize the copolymers, and the effects of NCO/OH molar ratios on T(g) of PUU was investigated by means of differential scanning calorimetry (DSC). The results revealed the successful synthesis of P(LA-co-PDO)-PUU. In addition, the T(g) of P(LA-co-PDO)-PUU increased from 37.9 degrees C to 44.2 degrees C with the increase NCO/OH ratios from 1.1 to 1.2. The P(LA-co-PDO)-PUU with T(g) close to body temperature will have potential applications as shape memory polymers in biomedical fields, especially in minimally invasive surgery.

• 出版日期2011-2
• 单位重庆大学; 重庆科技学院