ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Graft copolymerization was carried out onto a poly(methyl methacrylate) (PMMA) plate for surface modification. The following treatments were conducted to introduce peroxides into the PMMA surface prior to graft copolymerization: UV irradation, corona discharge, glow discharge, and ozone exposure. The static contact angle of the PMMA plate toward water decreased from 66° to 45 and 38° by the pre-treatment with corona and glow discharge for 5 min, respectively, whereas the pre-treatment with UV irradiation and ozone exposure caused no appreciable decrease in contact angle. When graft copolymerization of acrylamide (AAm) was carried out onto the pre-treated PMMA plates by near-UV light irradiation to decompose the peroxides in the presence of riboflavin, the contact angle further decreased to approximately 20° and the amount of AAm polymer grafted was 20-25 μg · cm-2 for the pre-treatments with corona discharge, glow discharge and UV irradiation. However, graft copolymerization was practically not achieved onto the PMMA plate pre-treated with ozone exposure. On the other hand, when graft copolymerization was performed at 50°C after degassing without UV irradiation, the amount of AAm polymer grafted was always less than 10 μg · cm-2, independent of the pre-treatment methods.
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1991.021920520
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