Ceramic Mugs: Differences in Chemical Composition and Benefits over Glass Mugs

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Discussion Overview

The discussion revolves around the differences in chemical composition between ceramic and glass mugs, particularly focusing on Starbucks ceramic mugs. Participants explore the advantages of ceramic mugs over glass mugs, including safety, aesthetics, and thermal properties.

Discussion Character

  • Debate/contested
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • Some participants question how Starbucks ceramic mugs differ chemically from other ceramics.
  • There is a suggestion that the preference for ceramic mugs may be more about custom and aesthetics rather than practical advantages.
  • One participant notes that certain glass formulations can shatter or crack due to heat shock, which may influence the choice of materials in restaurants.
  • Concerns are raised about the potential for ceramic mugs to leak chemicals, depending on the glaze used.
  • It is mentioned that ceramics have lower thermal conductivity than glass, making them easier to handle with hot liquids and potentially better at maintaining temperature.
  • Some participants assert that glass mugs do not leak chemicals, while others question the composition of glass and its safety.

Areas of Agreement / Disagreement

Participants express differing views on the advantages of ceramic versus glass mugs, with no consensus reached on the chemical safety of either material or the reasons behind their usage in restaurants.

Contextual Notes

There are unresolved questions regarding the specific chemical compositions of both ceramic and glass mugs, as well as the implications of these compositions for safety and performance.

Who May Find This Useful

This discussion may be of interest to individuals exploring material science, consumer product safety, and the practical applications of ceramics and glass in everyday items.

Blue Scallop
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How is starbucks ceramics mugs differed to other ceramics in the chemical composition?

What is the advantage of ceramics mug versus glass mug (and why don't I see the latter)?
 
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Blue Scallop said:
How is starbucks ceramics mugs differed to other ceramics in the chemical composition?

What is the advantage of ceramics mug versus glass mug (and why don't I see the latter)?
There might be a physical advantage but be open to the possibility that it's just custom, not any practical advantage. Personally, I think it's a much better aesthetic choice.

Are you saying you've never seen a glass beer mug?
 
Some glass formulations are prone to shatter/crack from heat shock - cold cup + boiling liquid. This is less likely to happen with other materials.

[opinion]
I think that restaurants are extremely accident averse - regarding customers and hot water. So if in the past they got great deals on glass mugs not meant for hot liquids, and they misused them, then they got 'burned'. Now they are glass-shy.

Most restaurants serve hot beverages in paper - in the places I can afford anyway.
[/opinion]
 
Glass mugs don't leak chemicals but could ceramic mugs leak chemicals?
 
Another comparison is that ceramics used in mugs have a lower thermal conductivity than glass and thus are easier to handle when hot liquids are placed into them. That property also gives them a small advantage for maintaining the temperature of the contents. This is not a generalization on ceramics just an observation of every ceramic mug I have ever encountered.

Blue Scallop said:
Glass mugs don't leak chemicals

Are you sure about that? What composition is the glass?

Blue Scallop said:
could ceramic mugs leak chemicals?

Depending on the glaze material it is possible. One would hope that a vessel designed for food use would have materials selected to not leach or be harmful.

BoB
 

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