Which method is used to achieve cross-linking during the polymerization of linear acrylic chains?

Show Answers

Introducing agents that refine grain structureUsing monomers with two reactive functional groupsRaising the polymerization temperature for linear chainsAdding substances that terminate the polymerization processApplying catalysts to speed up the reaction

Explanation

Cross-linking in acrylic polymerization is accomplished by incorporating difunctional monomers, which have two reactive sites allowing the formation of bridges between polymer chains. This process creates a networked structure rather than linear chains. Other methods like adding grain refining agents or increasing heat do not induce cross-linking, and terminating agents stop polymer growth rather than linking chains.