What is a monomer that joins different polymer chains together called?

A monomer that joins different polymer chains together is referred to as a cross-linker. Cross-linkers are essential in polymer chemistry because they facilitate the formation of a three-dimensional network by connecting various polymer chains. This connection leads to enhanced properties of the resulting material, such as increased strength, resilience, and thermal stability. Cross-linking plays a significant role in many applications, including the creation of durable nail products where improved structural integrity is desired.

In contrast, a polymerizer typically refers to substances that initiate or promote the polymerization process, resulting in the formation of polymers from monomers. A condensate pertains to a substance formed from the condensation reaction, often leading to the release of a small molecule, such as water. A binder usually serves to hold materials together but does not specifically refer to the monomeric components linking polymer chains. Thus, the term cross-linker is the most accurate and specific for describing a monomer that links different polymers.