Study On The Preparation And Anticoagulation Property Of Poly (Lactic Acid)/TiO₂ Hybrid Material

The synthesis and anticoagulation property of poly (lacticacid) /TiO₂ hybrid material was studied in this paper.The polylactic acid (PLA)was prepared from lactic acid with stannous octoate as the catalyst; Using tetrabutyl titanate (TBT) and PLA as the raw materials, the PLA/TiO₂ was synthesized by sol-gel method. The relative result products were characterized by FT-IR, XPS. The results show that hybrid reaction was occurred between PLA and TiO₂ sol resulting in forming Ti-O-C bonds. Compared with pure PLA, the anticoagulation property has been improved because of the introduction of TiO₂ and the best content of TiO₂ is 4 wt %.PLA/TiO₂ hybrid material doped with Sm was prepared by the introduction of Sm during the preparation process. The anticoagulation property of hybrid material increases with increase the content of Sm and reached the maximum value for 0.6 wt % TiO₂, and then decreases.