LI Wenjun, WANG Hanfu, LU Yuhua, WANG Zhiliang, ZHONG Wei. CHITOSAN·POLYACRYLIC ACID COMPLEX FORMING SEMI INTERPENETRATING POLYMER NETWORK MEMBRANE AND ITS STIMULATING RESPONSE FOR pH AND IONS[J]. Acta Polymerica Sinica, 1997,(1):111-110.
LI Wenjun, WANG Hanfu, LU Yuhua, WANG Zhiliang, ZHONG Wei. CHITOSAN·POLYACRYLIC ACID COMPLEX FORMING SEMI INTERPENETRATING POLYMER NETWORK MEMBRANE AND ITS STIMULATING RESPONSE FOR pH AND IONS[J]. Acta Polymerica Sinica, 1997,(1):111-110.DOI:
A novel semi interpenetrating polymer network (semi IPN) membrane composed of crosslinked chitosan (cr CS) and polyacrylic acid (PAA) was prepared.The IR spectra confirmed that CS and PAA can form polyelectrolyte complex (PEC) through electrostatic interaction between NH + 3 group from CS and COO - group from PAA.The semi IPN membrane exhibited a typical pH sensitivity
and its degree of swelling in different salt solutions with equal metal ionic valence and ionic strength were on the same level.Under certain ionic strength(I=1.5mol/L)
the degree of swelling increased with increasing metal ionic valence.Furthermore
the elongation of the semi-IPN membrane could vary reversibly by addition of CaCl2 solution and KCL solution altermately.