Details

Autor(en) / Beteiligte

• Zhu, Li-Ping
• Yi, Zhuan
• Liu, Fu
• Wei, Xiu-Zhen
• Zhu, Bao-Ku
• Xu, You-Yi

Titel

Amphiphilic graft copolymers based on ultrahigh molecular weight poly(styrene- alt-maleic anhydride) with poly(ethylene glycol) side chains for surface modification of polyethersulfone membranes

Ist Teil von

• European polymer journal, 2008-06, Vol.44 (6), p.1907-1914

Ort / Verlag

Oxford: Elsevier Ltd

Erscheinungsjahr

2008

Quelle

ScienceDirect

Beschreibungen/Notizen

• Amphiphilic graft copolymers having ultrahigh molecular weight poly(styrene- alt-maleic anhydride) (SMA) backbones and methoxyl poly(ethylene glycol) (MPEG) grafts were synthesized via the esterification between anhydride groups with hydroxyl groups. The synthesized graft copolymers, SMA- g-MPEGs, were used as additives in the preparation of polyethersulfone (PES) membranes via phase inversion process. X-ray photoelectron spectroscopy (XPS) analysis showed the comb-like graft copolymers spontaneously segregated to membrane surface during membrane formation. Water contact angle measurements and water absorbance experiments indicated the PES/SMA- g-MPEG blend membranes were much more hydrophilic than pure PES membrane. The blend membranes had stronger protein adsorption resistance than pure PES membrane did. After washed using de-ionized water for 25 days, the blend membranes exhibited higher hydrophilicity and stronger protein adsorption resistance. This phenomenon was attributed to the further accumulation of SMA- g-MPEG additives on membrane surface in aqueous conditions. SMA- g-MPEGs can be well preserved in membrane near-surface and not lost during membrane washing due to their high molecular weight and comb-like architecture.