New biomedical polyurethane ureas with high tear strengths

被引：42

作者：

deGroot, JH ^{[1
]}

deVrijer, R ^{[1
]}

Wildeboer, BS ^{[1
]}

Spaans, CS ^{[1
]}

Pennings, AJ ^{[1
]}

机构：

[1] UNIV GRONINGEN,DEPT POLYMER CHEM,NL-9747 AG GRONINGEN,NETHERLANDS

来源：

POLYMER BULLETIN | 1997年 / 38卷 / 02期

关键词：

Hard Segment; Soft Segment; Melting Enthalpy; Hexamethylene Diisocyanate; Hard Block;

D O I：

10.1007/s002890050040

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Biodegradable polyurethanes ureas (PUU) were synthesized by a two step polymerization. First a poly (epsilon-caprolactone) prepolymer was terminated with three different diisocyanates: lysinediisocyanate (LDI), 1,6-hexanediisocyanate (HDI) and 1,4-butanediisocyanate (BDI). Second the prepolymers were chain extended with 1,4-butanediamine. The degradation products of these polymers are non-toxic. The mechanical properties of the PUU are compared with those of three PU's. Compared to these PU's, the HDI and BDI based PUU showed a very high resistance to tearing.

引用

页码：211 / 218

页数：8