In a cross linked polymer, the monomeric units are linked together to constitute a three dimensional network. Which of the following is a cross-linked polymer ?
Correct answer: A. Bakelite (phenol formaldehyde)
- A. Bakelite (phenol formaldehyde)
- B. Polyester
- C. Polythene
- D. Nylon-6
Explanation
Bakelite is formed by extensive phenol-formaldehyde cross-linking, producing a rigid three-dimensional network. Polyester, polythene, and Nylon-6 are generally linear or branched polymers rather than thermoset network polymers.
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