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← ScienceWhich consequence results when thermal stress causes chain scission?
A)Weaker polymer material properties✓
B)Increased degree of polymerization
C)Enhanced cross-linking density
D)Greater resistance to solvents
💡 Explanation
Thermal stress may break covalent bonds in the polymer chains, a mechanism called chain scission; because chains shorten, causing reduction in entanglement leads to loss of mechanical strength and making the material weaker, therefore (A). Rather than (B), polymerization will not increase at lower temperatures.
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