Blend Modification Of Polycaprolactone

Poly( ε -caprolactone) (PCL) is a kind of well biodegradable and biocompatible polymer material. After PCL undergoes degradation in body, the finally metabolized resultants are carbon dioxide and water and there is no residue remaining in main organs. Therefore, PCL has important applications in the field of biomedical engineering and issue engineering. But it also has disadvantage. For example, its strength is too lower to be used effectively in issue engineering. So, it is very necessary to investigate the ways to improve its intensity.Novel biomedical composites have been made from CaSO₄, CaCO₃ and polycaprolactone (PCL). The influence of content and particulate size of particle and coupling agent on the mechanical properties of blends were investigated.It was concluded that the mechanical property of the blends deteriorated rapidly with the increasing of particle content. And in case that the particle was treated by coupling agent, the mechanical properties of modified blends were obviously better than that of non-modified blends. It was found that the PCL/CaSO₄ blends could be well enhanced with CaSO₄ treated by JH-0187, and the best content of JH-0187 was 2%. And the PCL/CaCO₃ blends also could be well enhanced with CaCO₃ treated by NDZ-101. The result of dispersion and activity experiment showed that the particle had been changed during this course. Furthermore, the mechanical properties of the blends became better with the decreasing of particulate scale. Simple degradation test showed that the loss weight of the samples increased with the time but not very obviously. The tensile strength and the elongation at break of the samples decreased with the increase of time, the trend was obvious but the variety was not big in the provision of time.