Dextran-grafted EVAL

The large hysteresis of contact angle, together with the noticeable influence of drying on the contact angle, suggests that the density of graft dextran chains at the EVAL surface... 

Figure 6. Effect of duration of urethanation with 10% HMD1 in toluene on the contact angles of EVAL films grafted with dextran for 4 min at a polymer concentration of 10 wt%. Key O, advancing , receding.

Figure 8 shows the zeta potentials against pH of the flowing electrolyte solution for the virgin EVAL and grafted with pure dextran after urethanation with 100% HMD I. The -pH of... 

EVAL urethanated for 3 h with 100% grafted with dextran for 1 h. 

Figure 10. Ex vivo evaluation of blood compatibility of urethanation with 100% HMDI. Key O, glass , virgin EVAL A, EVAL urethanated for 3 h with 100% HMDI grafted with dextran for 1 h.

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