A substance that represents an intermediate stage in polymerization, and can be usefully manipulated before polymerization is completed.
- ‘Artificial clays containing a catalyst can initiate polymerization when the particles are mixed with a prepolymer matrix.’
- ‘Siloxanes are prepolymers - the result of partial polymerization of silanes - in which the molecules are beginning to link, but only in sets of two or three, not yet in full chains.’
- ‘‘The ultimate resolution is correlated to the ability of the prepolymer to conform to the surface and the ability of the cross-linked polymer to retain the molded shape,’ Rogers said.’
- ‘Some researchers believe that prepolymers achieve better results.’
We take a look at several popular, though confusing, punctuation marks.