X. Qu et al., POLYMERIZATION OF CHITOSAN-ACRYLIC SALT FOR USE IN DENTISTRY, Journal of macromolecular science. Pure and applied chemistry, A34(5), 1997, pp. 881-899
Polymerization of chitosan-acrylic acid salt (CHI(+-)AA) has been stud
ied in the presence of UV irradiation or by heat produced by Nd:YAG la
ser radiation. The polymer obtained photochemically, CHI-PAA, is solub
le in water or saliva whereas the polymer obtained thermally, poly-CHI
-AA, is strongly crosslinked by amide links and is insoluble in both w
ater and saliva. Thermal polymerization of CHI(+-)AA allows for its ap
plication in the blocking of microchannels in dentin. Crosslinked poly
-CHI-AA is much more resistant to enzymatic lysozyme degradation than
CHI(+-)AA or CHI.