Podcast
Questions and Answers
What contributes to the good dye absorption properties of standard rayon?
What contributes to the good dye absorption properties of standard rayon?
- The longitudinal striated shape
- The addition of liquid during coagulation
- Serrated circular cross-section (correct)
- The presence of zinc in the fiber
Which type of rayon has a rounder cross-section, allowing for different properties?
Which type of rayon has a rounder cross-section, allowing for different properties?
- HWM rayon (correct)
- Standard rayon
- Viscose rayon
- Filament rayon
What chemical property makes rayon resistant to dilute alkalis and organic solvents?
What chemical property makes rayon resistant to dilute alkalis and organic solvents?
- Presence of crystalline areas
- Shorter molecular chains (correct)
- Longitudinal striated shape
- High molecular weight
What is the effect of stretching on viscose rayon after spinning?
What is the effect of stretching on viscose rayon after spinning?
Which of the following damages rayon?
Which of the following damages rayon?
What biological factor can destroy rayon?
What biological factor can destroy rayon?
What is the main factor responsible for the serrated circular shape of standard rayon?
What is the main factor responsible for the serrated circular shape of standard rayon?
What distinguishes the molecular structure of viscose rayon from that of cotton or flax?
What distinguishes the molecular structure of viscose rayon from that of cotton or flax?
How does the molecular structure of HWM rayon differ from standard rayon?
How does the molecular structure of HWM rayon differ from standard rayon?
What contributes to the bright appearance of viscose rayon?
What contributes to the bright appearance of viscose rayon?
Which type of rayon has an indented shape that aids in good dye absorption?
Which type of rayon has an indented shape that aids in good dye absorption?
How does the alkali cellulose and viscose rayon aging process affect the molecular structure?
How does the alkali cellulose and viscose rayon aging process affect the molecular structure?
What kind of acids damage rayon?
What kind of acids damage rayon?
What can destroy rayon due to biological factors?
What can destroy rayon due to biological factors?
What role does stretching play in enhancing the strength of viscose rayon?
What role does stretching play in enhancing the strength of viscose rayon?
What can cause a decrease in the brightness of viscose rayon?
What can cause a decrease in the brightness of viscose rayon?
