Training Polymer Chemistry-CT-homework 2 by Qian Zhou https://padlet.com/qianzhou1975/itwrx61je6q5 Made with a stroke of good luck en-us 2016-11-18 08:44:58 UTC 2025-11-03 01:30:58 UTC hello@padlet.com qianzhou1975 https://padlet.com/qianzhou1975/itwrx61je6q5/wish/138632199 2016-11-18 08:48:01 UTC https://padlet.com/qianzhou1975/itwrx61je6q5/wish/138632199 https://padlet.com/qianzhou1975/itwrx61je6q5/wish/138936416 2016-11-20 15:14:15 UTC https://padlet.com/qianzhou1975/itwrx61je6q5/wish/138936416 Rowan https://padlet.com/qianzhou1975/itwrx61je6q5/wish/138942323 2016-11-20 16:32:59 UTC https://padlet.com/qianzhou1975/itwrx61je6q5/wish/138942323 Rick: Glass transition temperature ski boot https://padlet.com/qianzhou1975/itwrx61je6q5/wish/139073154 Assignment: Estimate the range of Tg of an polymeric ski boot that is elastic at room temperature, and stiff when it’s cold.

Answer: 
 Let’s say room temperature is 19 degrees Celsius , and cold is 0 degrees
 The Tg is the glass transition temperature. That means that Tg is the process (in temperature) that the polymer has to go from stiff till elastic.

So the range of the Tg of the polymeric ski boot will be from +/- 3 degrees till 15 degrees. Because the boot still has to be stiff at 0 degrees , and the boot already has to be elastic at 19 degrees

]]> 2016-11-21 13:19:35 UTC https://padlet.com/qianzhou1975/itwrx61je6q5/wish/139073154 Tom Melkert https://padlet.com/qianzhou1975/itwrx61je6q5/wish/139743288 2016-11-24 11:36:50 UTC https://padlet.com/qianzhou1975/itwrx61je6q5/wish/139743288 Hi Qian! Here is my assignment! See you soon. https://padlet.com/qianzhou1975/itwrx61je6q5/wish/141961992 2016-12-06 10:24:06 UTC https://padlet.com/qianzhou1975/itwrx61je6q5/wish/141961992