Synthesis and characterization of biodegradable poly(-caprolactone-co-β-butyrolactone)-based polyurethane
- 作者：Ji Hye Hong ; Hyun Jeong Jeon ; Jae Heung Yoo ; Woong-Ryeol Yu ; Ji Ho Youk
- 关键词：Poly(<img src="http ; //www.sciencedirect.com/scidirimg/entities/25b.gif" alt="var epsilon" border=0>-caprolactone-co-β ; -butyrolactone) ; Poly(<img src="http ; //www.sciencedirect.com/scidirimg/entities/25b.gif" alt="var epsilon" border=0>-caprolac
- 刊名：Polymer Degradation and Stability
- 出版年：2007
- 期刊代码：85_01413910
- 类别：ms
- 出版时间：July 2007
- 卷：92
- 期：7
- 页码：1186-1192
- 文件大小：786 K
摘要
Poly(<img src="http://www.sciencedirect.com/scidirimg/entities/25b.gif" alt="var epsilon" border=0>-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(<img src="http://www.sciencedirect.com/scidirimg/entities/25b.gif" alt="var epsilon" border=0>-caprolactone)-based polyurethane (PCL-PU). PCLBL was synthesized by the ring-opening polymerization of <img src="http://www.sciencedirect.com/scidirimg/entities/25b.gif" alt="var epsilon" border=0>-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.