Training
Learning to Work Efficiently and
Accurately
APPLICATIONS
OF COLLOIDS
BAZLA SIDDIQUI
OVERVIEW
What are colloids?
 Applications of colloids
 Pharmaceutical apllications.
 Industrial applications
 Other ap...
INTRODUCTION
DEFINITION
Colloidal System is
 the heterogenous biphasic system
 dispersed phase ranges within 1-10
angstrom to few mic...
APPLICATIONS OF
COLLOIDS
Colloids play an important role in
pharmacy,in our daily life and in
industries.
 A few of the i...
PHARMACEUTICAL
APPLICATIONS
PHARMACEUTICAL
APPLICATIONS
THERAPY
 Colloidal system are used as therapeutic
agents in different areas.
 Colloidal medi...
PHARMACEUTICAL APPLICATIONS
COLLOIDAL SULPHUR:
Absorbed efficiently in colloidal forms.
COLLOIDAL COPPER:
In treatment of ...
PHARMACEUTICAL APPLICATIONS
NATURAL COLLOIDS
 Plasma protein.
COLLOIDAL ELECTROLYTES.
 Increase solubility,stability and...
gelatin coating over tablets
and granules.
 For protection.
DISSOLUTION AND
ABSORBTION:
 Both enhance due to huge
surfac...
PHARMACEUTICAL APPLICATIONS
TARGETED DRUG DELIVERY:
 Liposomes.
 Vessicles of phospholipids.
 As a drug carrier to prom...
APPLICATIONS IN FOOD
INDUSTRY:








Many of our foods
are colloidal in
nature.
Milk is an emulsion
of butterfat in ...
INDUSTRIAL
APPLICATIONS
NON-DRIP PAINTS:
 All paints are colloidal
dispersions of solid
pigments in a liquid
medium.
 paints also contain longch...
INDUSTRIAL APPLICATIONS
Sewage disposal:
 Colloidal particles of the dirt, mud etc.
carry electric charge.
 the colloida...
INDUSTRIAL APPLICATIONS




Cleansing action of
soap:
Soap solution is
colloidal in nature.
It removes the dirt
particle...
OTHER APPLICATIONS


Photography:
A colloidal solution
of silver bromide in
gelatin is applied on
glass plates or
cellulo...
OTHER
APPLICATIONS
OTHER APPLICATIONS
Clarification of Municipal water:
 The municipal water contains colloidal
particles.
 Alum which yiel...
OTHER APPLICATIONS
Artificial Kidney machine:
 The human kidneys purify the blood by
dialysis through natural membranes.
...
OTHER APPLICATIONS


The phenomenon
of the scattering
of light by the sol
particles is called
Tyndall effect.
CONCLUSION:
A knowledge of colloid chemistry is
essential to understand some of the various
natural phenomena around us.
...
QUESTIONS?
Applications of colloids
Applications of colloids
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Applications of colloids

  1. 1. Training Learning to Work Efficiently and Accurately
  2. 2. APPLICATIONS OF COLLOIDS BAZLA SIDDIQUI
  3. 3. OVERVIEW What are colloids?  Applications of colloids  Pharmaceutical apllications.  Industrial applications  Other applications  Conclusion. 
  4. 4. INTRODUCTION
  5. 5. DEFINITION Colloidal System is  the heterogenous biphasic system  dispersed phase ranges within 1-10 angstrom to few micrometres in dimensions.  differs from other heterogenous and homogenous solutions in terms of the size of dispersed phase.
  6. 6. APPLICATIONS OF COLLOIDS Colloids play an important role in pharmacy,in our daily life and in industries.  A few of the important applications of colloids are listed below. 
  7. 7. PHARMACEUTICAL APPLICATIONS
  8. 8. PHARMACEUTICAL APPLICATIONS THERAPY  Colloidal system are used as therapeutic agents in different areas.  Colloidal medicines being finely divided, are more effective and are easily absorbed in our system.  Penicillin and streptomycin . EYE LOTIONS:  Argyrol and protargyrol
  9. 9. PHARMACEUTICAL APPLICATIONS COLLOIDAL SULPHUR: Absorbed efficiently in colloidal forms. COLLOIDAL COPPER: In treatment of cancer. COLLOIDAL GOLD: Diagnostic agent for paresis. COLLOIDAL MERCURY: In treatment of syphilis.
  10. 10. PHARMACEUTICAL APPLICATIONS NATURAL COLLOIDS  Plasma protein. COLLOIDAL ELECTROLYTES.  Increase solubility,stability and taste of compounds,in lyophillic colloids. STABILITY OF DRUGS:  lyophobic colloids.  and prevent flocculation .
  11. 11. gelatin coating over tablets and granules.  For protection. DISSOLUTION AND ABSORBTION:  Both enhance due to huge surface area.  sulphur colloid. 
  12. 12. PHARMACEUTICAL APPLICATIONS TARGETED DRUG DELIVERY:  Liposomes.  Vessicles of phospholipids.  As a drug carrier to promote controlled release of drug in body.  Taken up by the liver and spleen.
  13. 13. APPLICATIONS IN FOOD INDUSTRY:     Many of our foods are colloidal in nature. Milk is an emulsion of butterfat in water protected by a protein, casein. Salad dressing, gelatin deserts, fruit jellies. Ice cream & Bread.
  14. 14. INDUSTRIAL APPLICATIONS
  15. 15. NON-DRIP PAINTS:  All paints are colloidal dispersions of solid pigments in a liquid medium.  paints also contain longchain polymers.  At rest, the chains of molecules are coiled.  stress is applied with a paint brush, the coiled molecules straightened.  This renders the paint ‘nondrip’.
  16. 16. INDUSTRIAL APPLICATIONS Sewage disposal:  Colloidal particles of the dirt, mud etc. carry electric charge.  the colloidal particles are coagulated when sewage water is passed through the plates kept at a high potential.  the suspended matter gets removed. 
  17. 17. INDUSTRIAL APPLICATIONS   Cleansing action of soap: Soap solution is colloidal in nature. It removes the dirt particles either by adsorption or by emulsifying.
  18. 18. OTHER APPLICATIONS  Photography: A colloidal solution of silver bromide in gelatin is applied on glass plates or celluloid films to form sensitive plates in photography.
  19. 19. OTHER APPLICATIONS
  20. 20. OTHER APPLICATIONS Clarification of Municipal water:  The municipal water contains colloidal particles.  Alum which yield ions, Al3+ is added to water to coagulate the negatively charged clay particles. Al3+ + 3H2O ---- Al(OH)3 + 3H+ Al(OH)3 + 4H2O + H+ ----- Al(OH)3(H2O)4 
  21. 21. OTHER APPLICATIONS Artificial Kidney machine:  The human kidneys purify the blood by dialysis through natural membranes.  The toxic waste products such as urea and uric acid pass through the membranes  colloidal-sized particles of blood proteins (haemoglobin) are retained
  22. 22. OTHER APPLICATIONS  The phenomenon of the scattering of light by the sol particles is called Tyndall effect.
  23. 23. CONCLUSION: A knowledge of colloid chemistry is essential to understand some of the various natural phenomena around us.  Colloids make up some of our modern products.  Dialysis,life saving treatment. 
  24. 24. QUESTIONS?
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