- A shape-memory poly(ε-caprolactone) hybridized TiO2/poly(L-lactide) composite with antibacterial properties
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- 所属单位：化学工程学院
- 发表刊物：International Journal of Biological Macromolecules
- 项目来源：省、市、自治区科技项目
- 关键字：shape memory composites
- 摘要：Organic-inorganic composites as an efficient strategy to upgrade the structural and functional properties of synthetic polymers are attracting extensive attentions. However, there are few studies on the shape memory (SM) behavior of organic-inorganic composites. In the work, poly(ε-caprolactone) hybridized TiO2 nanomaterial (PCLTiO2) is made as the switching phase and integrated into poly (L-lactide) (PLLA) to construct an SM composite. PCL-TiO2/PLLA shows “sea-island” structure and better interfacial adhesion than PCL/PLLA, which facilitates the transmission of elastic power between the switching phase and the fixing phase. PCL-TiO2 as switching phase exhibits lower enthalpy at 57 ◦C than PCL, and PCL-TiO2 also acts as “heat dispersion pump station”, which builds a dynamically responsive system and initiates shape change. The shape fixing and recovery ratio of PCLTiO2/PLLA are 93.9 % and 94.4 %, respectively, and go back to the original shape within 15 s at 57 ◦C. At the same time, PCL-TiO2 endows SMP with good antibacterial properties. Then this work provides a well-placed way for developing SM materials with structure-function integration.
- 合写作者：胡晓红,宋晓峰
- 第一作者：宋晓峰
- 论文类型：期刊论文
- 卷号：253
- 页面范围：1
- 是否译文：否
- 发表时间：2023-08-27
