由芳香族系的二苯基甲烷二異氫酸鹽(MDI) 與聚氧四亞甲基二醇(PTMG),
聚乙二醇(PEG) 與氧基乙基丙烯酸酯(HEMA),合成聚胺基甲酸酯(PU)與甲
基丙烯酸酯改質之聚胺基甲酸酯 (HPU)之預聚物,在依不同重量比例，以
溶液聚合法合成同時型HPU/PU互穿型網狀高分子。合成之IPNs薄膜具有較
高的吸水性，隨著HPU 含量的增加而增加,膨潤率及溶膠分率亦隨HPU 含
量的增加而增加，機械性質則先上升後下降,在HPU 含量為10wt% 時最佳.
血液適合性以恆溫動態凝血測試的相對血小板吸附量為依據.血液適合性
較優的薄膜，其HPU 的含量約在10 wt%，合成之IPNs薄膜均較玻璃有較佳
之血液適合性,而表面張力之極性項(γsp)略大於分散項(γsd) 者有較佳
的血液適合性。

The HPU/PU IPNs were synthesized simultaneously by solution
po- lymerization from different weight ratio of poly(
oxytetramethyle- ne) glycol-based PU prepolymer and
polyethylene oxide-based HPU prepolymer. As increasing the
HPU content in the IPN membranes , the water adsorption of the
membrane was increased rapidly. The swelling ratio and sol
fraction of IPN membrane increased. The tensile strength
increases initially and then decreases,the maxi- mun value in
tensile strength is at the 10 wt% of the HPU content The blood
compatibility of IPN membranes were measured by means of the
relative index of platelet adsorption (RIPA) which were
determined from dynamic clotting method at constant shaking
speed and temperature. The IPN membranes with 10 wt% HPU
content are more compatible to the blood.In general,all
membranes have better blood compatibility than the glass. It
was found the good blood compatibility for the membrane when
the polar term (γsp) of the surface tension is little higher
than the dispersion term (γsd) for the membrane .