MICROPHASE SEPARATED STRUCTURES AND PROPERTIES OF PDMS-MDI-PEG COPOLYMER SURFACE

Hong-xia Fang a; b; Li-bang Feng b

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MICROPHASE SEPARATED STRUCTURES AND PROPERTIES OF PDMS-MDI-PEG COPOLYMER SURFACE

Papers | Updated：2021-06-21

- MICROPHASE SEPARATED STRUCTURES AND PROPERTIES OF PDMS-MDI-PEG COPOLYMER SURFACE
- Vol. 27, Issue 3, Pages: 327-334(2009)
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- Published：20 May 2009
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Hong-xia Fang a, b, Li-bang Feng b. MICROPHASE SEPARATED STRUCTURES AND PROPERTIES OF PDMS-MDI-PEG COPOLYMER SURFACE[J]. 2009, 27(3): 327-334.
DOI：

Hong-xia Fang a, b, Li-bang Feng b. MICROPHASE SEPARATED STRUCTURES AND PROPERTIES OF PDMS-MDI-PEG COPOLYMER SURFACE[J]. 2009, 27(3): 327-334. DOI：

摘要

A series of poly(dimethylsiloxane) (PDMS)-4

4’-diphenylmethanediisocyanate(MDI)-poly(ethylene glycol) (PEG) multiblock copolymers were synthesized by employing two-step growth polymerization and investigated by AFM

XPS

contact angle system

protein adsorption and platelets adhesion measurements

respectively. It was found that as the molecular weight of PDMS increased

the surface of copolymers had increasing phase separation

while the increase in the molecular weight of PEG decreased the phase separation extents of the copolymer surface. XPS and contact angle measurements showed that the greater the phase separation extent was

the lower both the surface enrichment of PDMS and the surface free energy of the copolymer film were. The protein adsorption experiments indicated that the best phase separation did not exhibit the best biocompatibility.

Abstract

A series of poly(dimethylsiloxane) (PDMS)-4

4’-diphenylmethanediisocyanate(MDI)-poly(ethylene glycol) (PEG) multiblock copolymers were synthesized by employing two-step growth polymerization and investigated by AFM

XPS

contact angle system

protein adsorption and platelets adhesion measurements

respectively. It was found that as the molecular weight of PDMS increased

the surface of copolymers had increasing phase separation

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