Polymer Processing I

Polymer Processing I

University

11 Qs

quiz-placeholder

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Polymer Processing I

Polymer Processing I

Assessment

Quiz

Other

University

Hard

Created by

Yamuna Munusamy

Used 12+ times

FREE Resource

11 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Polymer processing method can be used to change the microstructure of polymer chains.

True

False

2.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Which of the followings are the criteria for Newtonian Fluid?

Viscosity is constant at all shear rate

Macromolecules

Does not have any interaction between between the molecules

Does not have entanglement

3.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Which of the followings are TRUE statement about entanglement?

Entanglement is cause by cross linking

Entanglement is cause by physical hook

Net changes in entanglement upon application of shear will result in changes in viscosity

Entanglement is caused by Van der Waal forces

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In shear thickening solutions, the shear thickening behavior is influenced by the followings EXCEPT

Interparticle forces stability

Shear value

Entanglement

Concentration of suspended particles

5.

FILL IN THE BLANK QUESTION

1 min • 1 pt

In Bingham plastic the flow could only observed when the shear stress applied exceed ----------------------

6.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

The following regions could be observed for polymer melts subjected to a range of shear.

Low shear regions

Constant shear region

High shear region

Shear thinning regions

7.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Select the correct answers.

The viscosity vs shear rate graph was plotted for LDPE and HDPE. Which of the followings are true.

At low shear region, LDPE shows higher viscosity compared to HDPE

At shear thinning region, drop of viscosity is more for HDPE

At high shear region both HDPE and LDPE behaves as Newtonian fluid.

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