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Bionic design for surface optimization combining hydrophilic and negative charged biological macromolecules.

Abstract：

:While polyethersulfone (PES) membrane represents a promising option for blood purification, the blood compatibility must be dramatically enhanced to meet today's ever-increasing demands for many emerging application. In this study, we report a bionic design for optimization and development of a modified PES membrane combining hydrophilic and negative charged biological macromolecules on its surface. The hydrophilic and ionic charged biological macromolecules sulfonated poly(styrene)-b-poly(methyl methacrylate)-b-poly-(styrene) (PSSMSS) and poly(vinyl pyrrolidone)-b-poly(methyl methacrylate)-b-poly-(vinyl pyrrolidone) were synthesized via reversible addition-fragmentation chain transfer polymerization and used together to modify PES membranes by blending method. A hydrophilic membrane surface with negative charged surface coating was obtained, imitating the hydrophilic and negatively charged structure feature of heparin. The modified PES membranes showed suppressed platelet adhesion, and a prolonged blood clotting time, and thereby improved blood compatibility. In addition, the blood clotting time of the modified membranes increased with the blended PSSMSS amounts increment, indicating that both the hydrophilic and negative charged groups play important roles in improving the blood compatibility of PES membranes.

journal_name

Int J Biol Macromol

journal_title

International journal of biological macromolecules

authors

Ran F,Song H,Niu X,Yang A,Nie S,Wang L,Li J,Sun S,Zhao C

doi

10.1016/j.ijbiomac.2014.03.034

subject

Has Abstract

pub_date

2014-06-01 00:00:00

pages

260-9

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(14)00187-1

journal_volume

67

pub_type

杂志文章

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