How Does Methyl Orange's Color Intensity Vary on Cotton, Nylon, and Wool?

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SUMMARY

The discussion focuses on predicting the color intensity of methyl orange on three different fabrics: cotton, nylon, and wool. It establishes that cotton, being a natural polymer with hydrophilic groups, will exhibit the highest color intensity due to stronger hydrogen bonding. Nylon, a synthetic polymer with weaker hydrogen bonds, will show a lower intensity. Wool's protein structure may lead to varying results, but it is suggested that its color intensity is likely less than that of cotton but potentially greater than nylon.

PREREQUISITES
  • Understanding of polymer chemistry, specifically natural vs. synthetic polymers.
  • Knowledge of hydrogen bonding and its effects on color intensity in dyes.
  • Familiarity with the chemical structure of methyl orange and its interaction with different materials.
  • Basic principles of protein structure and amino acid properties.
NEXT STEPS
  • Research the chemical interactions between dyes and various fabric types, focusing on cotton and wool.
  • Explore the properties of synthetic polymers, specifically nylon, and their interaction with dyes.
  • Study the role of hydrogen bonding in color intensity for different dye-fabric combinations.
  • Investigate the molecular structure of methyl orange and its behavior in different environments.
USEFUL FOR

Chemistry students, textile scientists, and anyone interested in the interactions between dyes and various fabric types will benefit from this discussion.

RoboNerd
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Homework Statement


I have a methyl orange molecule.

Then my problem says that "wool is a protein, a naturally occurring polymer made up of amino acids with ionized side chains. cotton is a naturally occurring polymer made up of glucose units with hydrophillic groups surrounding each glucose unit. nylon is a synthetic polymer made of hydrocarbon repeating chains joined together by highly polar amide groups."

Using this hypothesis, predict the relative color intensity that would be produced by methyl orange on cotton, nylon, and wool from least to greatest.

Homework Equations



no equations

The Attempt at a Solution


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So I believe that a H-N bond is less polar than H-O bond, so the hydrogen bonding caused by nylon's amide groups will be weaker than that caused by the glucose's hydrophillic groups. So I believe that the color intensity of cotton > that of nylon.

However, I am confused as to whether amino acids in wool will form more electronegative/polar hydrogen bonds than cotton does and how to rank them.

Please advise on how to solve this problem.

Thanks in advance. Anything is appreciated!
 
I honestly do not have any new information and/or conclusions. Sorry..
 

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