Which outcome occurs when a high-energy electron beam is directed onto a polymer sample with weak covalent cross-links?

💡 Explanation

When a high-energy electron beam strikes a polymer, chain scission occurs because incident electrons break covalent bonds directly, leading to degradation of chains and smaller molecular weight. Therefore, chain scission occurs, rather than increased crystallinity, enhanced cross-linking or polymerization, which require thermal activation or specific catalysts.

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