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Synthesis and characterization of biodegradable poly(?-caprolactone-co-β-butyrolactone)-based polyurethane |
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| Authors: | Ji Hye Hong Jae Heung Yoo Ji Ho Youk |
| Institution: | a Department of Advanced Fiber Engineering and Intelligent Textile System Research Center, Inha University, Incheon, South Korea b TNB WorkGroup Co., Ltd., Park-View B/D, 91-6, Yangjae1-Dong, Seocho-Gu, Seoul, South Korea c Intelligent Textile System Research Center and School of Materials Science and Engineering, Seoul National University, Seoul, South Korea |
| Abstract: | Poly(?-caprolactone-co-β-butyrolactone) (PCLBL)-based polyurethane (PCLBL-PU) was synthesized and its tensile properties and hydrolytic degradability were investigated in an attempt to improve the degradability of poly(?-caprolactone)-based polyurethane (PCL-PU). PCLBL was synthesized by the ring-opening polymerization of ?-caprolactone (CL) and β-butyrolactone (BL) with stannous octoate as a catalyst. The introduction of a small amount of BL units significantly decreased the crystallinity of PCLBL. The crystallinity of the soft segment of PCLBL-PU also decreased with increasing BL content, and thus its hydrolytic degradation rate was dramatically increased. PCLBL-PU polymerized with PCLBL containing 5.7 mol% of BL units showed very similar tensile properties to PCL-PU, but its hydrolytic degradation rate increased by 100% at 45 °C. |
| Keywords: | Poly(?-caprolactone-co-β-butyrolactone) Poly(?-caprolactone) Polyurethane Hydrolytic degradation Crystallinity |
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