1M.Ali Asghar& M.Hammad Saeed
2M.Ali Asghar& M.Hammad Saeed
Introduction
Morphology
Types
Properties
Synthesis
Application
questions
3M.Ali Asghar& M.Hammad Saeed
Surfaces having pores and cavities
For example: Ceramics, Foams
porous polymers have pores on the
surface
M.Ali Asghar& M....
Morphology
The study of shape, size, texture and
phase distribution of physical objects.
Gels, Sorbents & porous polymer
P...
Types of porous polymers
Micro porous
Macro porous
High internal phase emulsion
(HIPE)
6M.Ali Asghar& M.Hammad Saeed
Cross linking of
linear chains
Results by Co-
polymerization
Create small pores
with in3-D matrix
(gel)
Soft and compr...
High degree of
cross liking Pores
are larger than gel
Total pore volume
50%
 pores are formed
independent of
polymeriza...
Pore volume
can be 70% to
90%
Micro size
pores or cavities
are formed
instead of
angstrom pores.
Ranges from 1
to 50 mi...
Following properties will effect the
morphology of porous polymers
Phase volume
 density
surface area
 cavity size
Re...
11M.Ali Asghar& M.Hammad Saeed
12M.Ali Asghar& M.Hammad Saeed
13M.Ali Asghar& M.Hammad Saeed
Micro porous polymers:
Co-polymerization of styrene &
divinylbenzene (DVB)
size of the pores depend on the
degree of cr...
M.Ali Asghar& M.Hammad Saeed 15
Polymerization takes place in the
presence of “porogens”.
Thus, as polymerization proceeds...
M.Ali Asghar& M.Hammad Saeed 16
 HIPE structures are formed when
an oil, water and suitable
emulsifier are mixed with
agi...
Catalysts:
As it is understood
porous polymers have
large surface area, which
enhance the availability
of reactivity sites...
Porous polymers provide
a culture for the
preparation of vaccines
In image the person is
holding a cancer vaccine.
Porous ...
Porous polymers are
used for
chromatography
materials.
As porous texture
supports the
capillary action
hence it will
suppo...
Porous polymers
are used to
control oil spill
as they are
powder
polymers with
ability to absorb
the oil from
water and fo...
M.Ali Asghar& M.Hammad Saeed 21
22M.Ali Asghar& M.Hammad Saeed
23M.Ali Asghar& M.Hammad Saeed
of 23

Porous Polymers with their synthesis

About porous polymers with their types and the synthesis processes. their applications are also described
Published on: Mar 4, 2016
Published in: Engineering      Technology      Business      
Source: www.slideshare.net


Transcripts - Porous Polymers with their synthesis

  • 1. 1M.Ali Asghar& M.Hammad Saeed
  • 2. 2M.Ali Asghar& M.Hammad Saeed
  • 3. Introduction Morphology Types Properties Synthesis Application questions 3M.Ali Asghar& M.Hammad Saeed
  • 4. Surfaces having pores and cavities For example: Ceramics, Foams porous polymers have pores on the surface M.Ali Asghar& M.Hammad Saeed 4
  • 5. Morphology The study of shape, size, texture and phase distribution of physical objects. Gels, Sorbents & porous polymer Pores and cavities on the surface, formed by the cross linking or 5M.Ali Asghar& M.Hammad Saeed
  • 6. Types of porous polymers Micro porous Macro porous High internal phase emulsion (HIPE) 6M.Ali Asghar& M.Hammad Saeed
  • 7. Cross linking of linear chains Results by Co- polymerization Create small pores with in3-D matrix (gel) Soft and compress able at high pressure Pore size is usually less than 30 angstrom Pore distribution is uniform 7M.Ali Asghar& M.Hammad Saeed
  • 8. High degree of cross liking Pores are larger than gel Total pore volume 50%  pores are formed independent of polymerization Pores ranges from 30 to 100 angstrom Pores are larger than gels but irregular 8M.Ali Asghar& M.Hammad Saeed
  • 9. Pore volume can be 70% to 90% Micro size pores or cavities are formed instead of angstrom pores. Ranges from 1 to 50 micro meters 9M.Ali Asghar& M.Hammad Saeed
  • 10. Following properties will effect the morphology of porous polymers Phase volume  density surface area  cavity size Reactivity Liquid uptake 10M.Ali Asghar& M.Hammad Saeed
  • 11. 11M.Ali Asghar& M.Hammad Saeed
  • 12. 12M.Ali Asghar& M.Hammad Saeed
  • 13. 13M.Ali Asghar& M.Hammad Saeed
  • 14. Micro porous polymers: Co-polymerization of styrene & divinylbenzene (DVB) size of the pores depend on the degree of cross linking As the percentage of DVB and degree of cross linking decreases, size of pores increases. M.Ali Asghar& M.Hammad Saeed 14
  • 15. M.Ali Asghar& M.Hammad Saeed 15 Polymerization takes place in the presence of “porogens”. Thus, as polymerization proceeds, pores are formed in the spaces where porogens are found. Pore diameters are typically greater than 50 Å.
  • 16. M.Ali Asghar& M.Hammad Saeed 16  HIPE structures are formed when an oil, water and suitable emulsifier are mixed with agitation.  The water becomes dispersed in the oil phase and as its concentration increases the consistency of the mixture changes to a thick liquid.  This resulting substance is the high internal phase emulsion and is quite stable sphere like structure.
  • 17. Catalysts: As it is understood porous polymers have large surface area, which enhance the availability of reactivity sites. This makes these materials reactive Hence if we attach the catalysts on with the surfaces of these polymers, catalysts gets more chance to react M.Ali Asghar& M.Hammad Saeed 17
  • 18. Porous polymers provide a culture for the preparation of vaccines In image the person is holding a cancer vaccine. Porous polymers provide space to keep the viruses and cells and to treat them. M.Ali Asghar& M.Hammad Saeed 18
  • 19. Porous polymers are used for chromatography materials. As porous texture supports the capillary action hence it will support the chromatography M.Ali Asghar& M.Hammad Saeed 19
  • 20. Porous polymers are used to control oil spill as they are powder polymers with ability to absorb the oil from water and form a gel and float on water M.Ali Asghar& M.Hammad Saeed 20
  • 21. M.Ali Asghar& M.Hammad Saeed 21
  • 22. 22M.Ali Asghar& M.Hammad Saeed
  • 23. 23M.Ali Asghar& M.Hammad Saeed

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