STUDIES ON THE POLYMERIZATION OF FUNCTIONAL MONOMERS CONTAINING AMINO GROUP XV. ACRYLIC MONOMERS HAVING MORPHOLINO-MOIETY ACT AS A COMPONENT FOR REDOX INITIATION SYSTEM AND HYDROGELS PREPARED THEREFROM
ZHANG Zhen-yu, YU Chun-mei, ZHANG Yong, LI Fu-mian. STUDIES ON THE POLYMERIZATION OF FUNCTIONAL MONOMERS CONTAINING AMINO GROUP XV. ACRYLIC MONOMERS HAVING MORPHOLINO-MOIETY ACT AS A COMPONENT FOR REDOX INITIATION SYSTEM AND HYDROGELS PREPARED THEREFROM[J]. Acta Polymerica Sinica, 1991,(4):415-423.
ZHANG Zhen-yu, YU Chun-mei, ZHANG Yong, LI Fu-mian. STUDIES ON THE POLYMERIZATION OF FUNCTIONAL MONOMERS CONTAINING AMINO GROUP XV. ACRYLIC MONOMERS HAVING MORPHOLINO-MOIETY ACT AS A COMPONENT FOR REDOX INITIATION SYSTEM AND HYDROGELS PREPARED THEREFROM[J]. Acta Polymerica Sinica, 1991,(4):415-423.DOI:
Polymerization of acrylamide initiated by the combination of 2-N-morpholinoethyl me-thacrylate (MPEMA) or 2-N-morpholinoisopropyl methacrylate (MPIPMA) with potassium persulfate were studied kinetically. The rate equations for AAM polymerization were given asRp=Kp[K2S2O8]0.5[MPEMA]0.5[AAM]
Rp=Kp[K2S2O8]0.5[MPIPMA]0.5[AAM] and the overall activation energies for the above polymerizations were obtained to be 11.1 Kcal/ mol and 13.6 KCal/mol respectively. The UV analysis for the AAM polymer initiated by the above initiation systems showed that the polymerizable amines
MPEMA and MPIPMA not only join the redox initiation but also incorporate to the acrylamide polymer chains. A super high molecular weight
107 of PAAM were obtained by using these initiation systems. The water-absorptivity of hydrogels prepared from MPEMA and methylenebisacrylamide as cross-linking agent was undertaken. It was also observed that the transparency f concentrated PMPEMA aqueous solution was sensitively depended on the tempeerature. Under room temperatu-re the sollution was transparent
when the temperature raised to 60℃
the solution became opa-que and completely lost its transparence when temperature raised to upper 80℃.