A polymer in which the repeating units form a three-dimensional network is classified as a:
Correct answer: C. Cross-linked polymer
- A. Linear polymer
- B. Branched polymer
- C. Cross-linked polymer
- D. Homopolymer
Explanation
The correct answer is Cross-linked polymer. Cross-linked polymers are characterized by their three-dimensional network structure, where polymer chains are linked together by covalent bonds. This structure provides the polymer with enhanced mechanical properties like strength and resistance to deformation.Linear polymers, on the other hand, consist of long, unbranched chains, resulting in a two-dimensional structure without cross-links. Branched polymers have side chains off the main chain, but they do not form a three-dimensional network. Homopolymers are made of one type of repeating unit, but this term does not describe the structural complexity of a three-dimensional network.
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Industrial chemistry applies chemical reactions and material properties to the manufacture of adhesives, dyes and polymers. Coverage includes addition and condensation polymerisation, thermoplastics and thermosetting polymers, the structural basis of colour in dyes, and how adhesive composition enables bonding between surfaces.
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