How about a plastic used in medicine?
Because the body has the natural coagulation function to prevent bleeding, when plastic material is used in the treatment or use of the human body, it immediately produces thrombosis due to the rejection of the body, resulting in tissue necrosis and surgical failure. According to the study, the most direct cause of thrombosis is platelet adhesion. The adhesion of platelets is related to the surface properties of the material. Such as the critical surface of the material, the hydrophilic surface of the material, the hydrophobic equilibrium, the smoothness of the material surface, and the charge properties of the material surface.
Generally speaking, medical plastic materials require stable chemical and physical properties, no toxicity, no allergy, no carcinogenicity, and can be sterilized, sterilized, easily molded, processed and antithrombotic. Antithrombotic is of paramount importance in many performance requirements.
Medical plastic materials need to be contacted with biological body, blood, body fluid for a long time, and some are even implanted in the body permanently. Thus, this class has excellent biological substitutability and biocompatibility.
