NONSPECIFIC INTERACTIONS BETWEEN HEPARIN AND POLY-L-LYSINE SURFACES

被引:17
作者
HARTLEY, PG [1 ]
BAILEY, AI [1 ]
LUCKHAM, PF [1 ]
BATTS, G [1 ]
机构
[1] KODAK LTD, HARROW HA1 4TY, MIDDX, ENGLAND
关键词
HEPARIN SURFACES; NONSPECIFIC INTERACTIONS; POLY-L-LYSINE SURFACES;
D O I
10.1016/0927-7757(93)80116-V
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The surface force apparatus has been used to study the force law between mica surfaces modified with the biopolymers heparin and poly-L-lysine by direct adsorption from solution. Between identical surfaces the interactions were well described by the DLVO theory for repulsive double-layer overlap. Between dissimilar surfaces, strong attractive forces were measured which were consistent with the Hogg-Healy-Fuerstenau approximation to the Poisson-Boltzmann distribution for asymmetric double layers, suggesting a non-specific electrostatic basis for the measured long-range forces.
引用
收藏
页码:191 / 198
页数:8
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