This topic contains a solution. Click here to go to the answer

Author Question: Discuss how you would expect the glass transition to be affected if a large, pendent group were ... (Read 106 times)

EAugust

  • Hero Member
  • *****
  • Posts: 550
Discuss how you would expect the glass transition to be affected if a large, pendent group were added to the monomer unit.
 
  What will be an ideal response?

Question 2

Explain why the properties of a polymer below the glass transition temperature are different from the same properties in the same polymer above the glass transition temperature.
 
  What will be an ideal response?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

vickybb89

  • Sr. Member
  • ****
  • Posts: 347
Answer to Question 1

Most large pendent groups will require more thermal energy to achieve long-range chain movements. Therefore, the glass transition temperature would be expected to increase.

Answer to Question 2

Below the glass transition temperature polymers are hard. This occurs because the polymer structure is relatively fixed in space. Energy input at temperatures below the glass transition temperature can generally only result in small vibrations and rotations which do not lend movement to the polymer structure. Above the glass transition temperature much more movement




EAugust

  • Member
  • Posts: 550
Reply 2 on: Aug 19, 2018
:D TYSM


jackie

  • Member
  • Posts: 324
Reply 3 on: Yesterday
Gracias!

 

Did you know?

The horizontal fraction bar was introduced by the Arabs.

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

For a complete list of videos, visit our video library