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प्रश्न
Why are cross-linked polymers very hard and rigid?
लघु उत्तर
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उत्तर
- Cross-links join polymer chains into a three-dimensional network, creating strong covalent bonds between chains.
- These connections prevent chains from sliding or bending, greatly reducing molecular mobility.
- Restricted mobility and strong interchain bonds make the material stiff, hard, and often brittle.
- Cross-linked polymers show high rigidity and strong resistance to deformation.
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