Why Does Paper Stick to Hot Bowls?

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SUMMARY

The discussion centers on the phenomenon of paper adhering to hot bowls, particularly when using newspaper. The primary factors identified are cohesive forces between the paper and the bowl's surface, which can be influenced by temperature and moisture. High temperatures typically reduce adhesive forces due to thermal agitation; however, if the paper becomes damp, surface tension from moisture can increase adhesion. This duality of factors explains why paper may stick to hot bowls under certain conditions.

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  • Understanding of cohesive forces in materials
  • Basic knowledge of thermal dynamics and temperature effects
  • Familiarity with surface tension concepts
  • Experience with material properties of paper and ceramics
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mkbh_10
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What is the reason for paper getting stuck to a hot bowl when it is kept on paper for a certain period . I hve seen particularly that newspaper when placed under a hot bowl gets stuck to the bottom of bowl when the bowl is lifted ?

I think the cohesive forces b/w the the two surfaces must playing some part but at high temp shudn't the magnitude of force b/w the two be less due to thermal agitation.
 
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I don't know if this is the correct answer in your situation, but my experience is that the paper frequently becomes damp. In that case, it would be the surface tension of the water causing adhesion.
 

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