Modified polycarbonate with high anticoagulant activity
A polycarbonate, blood-based technology, applied in the field of polycarbonate modification, can solve the problems of inability to provide reaction sites, low PC grafting rate, unsatisfactory, etc., to achieve improved anticoagulant ability, wide derivatization performance, Research Potential for High Effects
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[0015] Example 1
[0016] a. Synthesis of 5-methyl-5-allyloxycarbonyl-1,3-dioxan-2-one (MAC)
[0017] Using 2,2-(bis-hydroxymethyl)propionic acid (bis-HPA) as raw material, 5-methyl-5-allyloxycarbonyl-1,3-dioxan-2-one (MAC) was synthesized. This monomer provides a functionalized double bond for the side chain of the polycarbonate.
[0018] b. Preparation of TMC and MAC random copolymer
[0019] Weigh a certain amount of TMC and MAC monomers (molar ratio of 3:1) and a clean and dry magnetic stirrer into a special dry single-necked flask sealed with a rubber stopper, and pump the reaction device with an oil pump for half an hour After vacuuming, the catalyst and initiator were dissolved in dry n-hexane to dilute, and stannous octoate (4×10 - 4 mol catalyst), n-octanol (2×10 -5 After the mol initiator is injected into the reaction device, pull out the syringe and seal it with vacuum ester. After continuing to evacuate for one hour, stop evacuation and seal. Then, the reaction device wa...
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