What type of monomer is responsible for joining different polymer chains together?

The type of monomer responsible for joining different polymer chains together is known as a cross-linking monomer. Cross-linking monomers have multiple reactive sites that allow them to bond with two or more polymer chains, forming a network that provides structural integrity and strength to the material.

This network enhances the overall properties of the polymer, such as its resistance to solvents, heat, and deformation. In the context of nail technology, cross-linking agents can improve the durability and longevity of nail products, making them more effective for use in manicures and other nail applications.

Other types of monomers mentioned do not fulfill the specific role of creating cross-links between polymer chains. Polymer chain formation typically involves simple or complex monomers, which contribute to the length of the polymer but do not provide the necessary functionality for cross-linking. Thus, a cross-linking monomer is essential for creating robust, interlinked structures in various materials, including those used in nail technology.