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← ScienceWhich consequence results when sulfur molecules replace hydrocarbons?
A)Increased polymer chain flexibility improves processing
B)Oxidation stability decreases due to weakening
C)Glass transition temperatures will shift higher✓
D)The coefficient of thermal expansion lowers
💡 Explanation
Increased dipole-dipole interactions from C-S bonds (relative to C-H) via induced dipole-dipole leads to a higher glass transition temperature. This is because the increased intermolecular interactions resist chain movement, therefore, more thermal energy must be added, rather than chain slippage.
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