Membrane and Desalination Technologies - TCE Moodle Website

54 J. Ren and R. Wang
HO
HO
OH
O
OH
O
H 2C OCH 2CH 3
Cellulose acetate
O
HO
OH
OH
O
Cellulose
O
HO
CH O
CH O
* CH CH O *
* CH CH O *
CH CH
n CH CH
n
OH OCCH 3
O
OH
O
OH
O
n
HO
O
H 2C OCH 2CH 3
H3CC O OCCH3 O
Cellulose triacetate
Fig. 2.4 Chemical structures of cellulose, cellulose acetate and triacetate.
* O
O SO2 *
O
Udel polysulfone
SO 2
O SO2 O
Polysulfone cyclic dimer
Fig. 2.5 Chemical structure of polysulfone.
O
O
OH
OH
O
OH