Polymer Cross Linking and Viscosity

Polymer Cross Linking and Viscosity - but more viscous than...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Polymer Cross Linking and Viscosity Lab Instructor: Dan Mack November 8, 2007
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Results: The effect of cross-linking on the viscosity of a Poly(vinyl alcohol) solution was determined. Viscosity was measured qualitatively and compared to common things in life. The data collected is shown in Table 1. Table 1: Qualitative Analysis of Viscosity of PVA solution Mixture Original PVA solution Borax Added Sulfuric Acid Added Sodium Hydroxide Added Viscosity More viscous than water; similar to tea with honey Became greatly more viscous, like silly putty Became less viscous,
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: but more viscous than original solution. Similar to cough syrup. Became most viscous. Similar in viscosity to crumpled gelatin Conclusion: It was concluded that cross-linking increases the viscosity of the polymer solution, and it is proportional to the extent of cross-linking. It was determined that breaking the cross-linking by adding sulfuric acid does not restore the viscosity of the non-cross linked solution. It was also determined that neutralizing the acid does not completely restore the viscosity of the cross-linked solution....
View Full Document

This lab report was uploaded on 02/14/2008 for the course CHEM 2070 taught by Professor Chirik,p during the Fall '05 term at Cornell.

Page1 / 2

Polymer Cross Linking and Viscosity - but more viscous than...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online