Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← ScienceWhich outcome arises when a semi-crystalline polymer is heated above its glass transition temperature under tensile load?
A)Increased chain mobility and creep✓
B)Immediate catastrophic brittle fracture
C)Significant bond length contraction occurs
D)Amorphous regions resist chain relaxation
💡 Explanation
Increased chain mobility promotes creep due to the increased kinetic energy available to overcome the van der Waals forces in the amorphous region, enabling chain slippage; therefore, creep increases rather than brittle fracturing, because crystalline regions remain intact unless heated much higher.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Science →- Which mechanism dictates electron transport through a quantum dot transistor leading to single-electron tunneling?
- Which consequence results when increasing the mass-energy density within a defined region of otherwise flat spacetime?
- Which outcome results when electron capture occurs in beryllium-7?
- Which outcome results when thin-film interference in high humidity?
- Which risk increases when a fluid's Reynolds number exceeds pipe design constraints?
- Which risk increases when a naval sonar array broadcasts at high intensity?
