mucilages

Question 1

mucilage

Answer 1

thich, viscous solution most commonly produced by dispering gum in water. colloidal dispersion of natural gums

Question 2

use in suspension and emulsions

Answer 2

s suspending agen

e emulsifying agent

Question 3

what is negatives of emulsions

Answer 3

microbial contamination and decomposition as velocity decreases when left to store, thus need to referigerat

Question 4

what is the major component in changing viscosity

Answer 4

shape of macromolecules; changes in macromolecule solvent interaction leads to changes in shape

Question 5

what is property of good solvent

Answer 5

linear molecule extends as polar groups solvate onto it increasing viscosity

Question 6

what is property of poor solvent

Answer 6

coil up or fold up, and intramolecular attraction becomes greater than macromolecular interaction

Question 7

what is effect of ionisation and counterions on viscosity

Answer 7

max ionisation leads to stretching of polymers leading to increased viscosity
counterions reduces effective overall charge thus decreasing viscosity

Question 8

what is acacia

Answer 8

high mx polysaccharide that is a polyelectron due to COO- which coacervates in presence of gelatin or +ve polyelectrons

Question 9

what is the effect of ph and salts on viscosity

Answer 9

if ph is high then high viscosity excluding if counterion are there.
ionised group then high

Question 10

how to make mucilage

Answer 10

wet gum with glycerol, pg and ethanol sift powder slowly into the vortex of virgously stirring vehicle