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5324920 
Journal Article 
ADSORPTIVE SURFACE MODIFICATION OF A MANGANIFERROUS ORE AND ITS EFFECT ON THE RADICAL POLYMERIZATION OF METHYL-METHACRYLATE 
Moustafa, AB; Radwan, FM; Emam, A 
1991 
Yes 
Acta Polymerica
ISSN: 0323-7648
EISSN: 1521-4044 
42 
10 
531-533 
WOS:A1991GU58200014 
The surface unmodified manganiferous ore catalyzed the radical polymerization of methyl methacrylate initiated by sodium bisulphite. An adsorptive surface modification of the ore with stearic acid was carried out to various extents. The influence of the surface coverage on the reaction parameters was investigated. The surface modification effectively retarded the catalytic action of the manganiferous ore and caused a drop of the viscosity average molecular weights of the polymers.