The branch chains and the cyclic structure inside the polymer was introduced by decreasing the use level of the extender, hence the polyurethane with high intensity had been synthesized. The strain at break and the Stress at break were 1914% and 4303 N/cm 2 respectively. The antithrombogenic experiment indicated that it may provide the hard segments with shielding effect by introducing the alkyl side chain with appropriate length to the hard segments. By this way, the structure of micro-phase separation is...
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