الفهرس 
SummaryOnly 14 pages are availabe for public view
 |  | from | 307 |  |  |
| | | from | 307 | | |
Abstract
The present work includes three chapters
Chapter (1): Introduction:
This chapter contains the kinetic of the anodic oxidative Electropolymerization of o-Methoxyphenol (o-MP) and o-Methylyphenol (o-cresol),pyrrole, a binary mixture of o-Methoxyphenol and pyrrole ,and a binary mixture of o-Methylphenol and pyrrole, characterization of the obtained polymer films by cyclic voltammetry ,UV-visible,IR,1HNMR spectroscopy ,X-ray diffraction studies ,morphological investigated by SEM, Thermal stability by TGA, physical properties and structure of polymers which have been discussed in literature .
Chapter (2):Experimental
Comprises the chemicals, experimental methods for the Electropolymerization, Cyclic voltammetry, adsorbent of pb [II] ions and antimicrobial activity. Techniques for the kinetic studies and calculations of the reaction order and activation thermodynamic parameters are given. characterization of the obtained polymer films by different instrumental techniques such as UV-visible, IR, 1HNMR, and elemental analysis, TGA, XRD and SEM are also given.
Chapter (3): Result and discussion
This chapter includes the layout of the obtained results and their discussions and consists of four parts:
Part (1):
In this part, the kinetic of the anodic oxidative electropolymerization of o-Methoxy phenol and o-Methyl phenol (o-cresol), pyrrole, a binary mixture between o-Methoxy phenol and pyrrole and a binary mixture of o-cresol and pyrrole in sulfuric acid medium at different temperature was investigated. The reaction rate law of the above
Electropolymerization system is given by the following equation:
R= KE[Monomer]a [H2SO4]b
where a and b is the orders of the Electropolymerization reaction and is found to be illustrated in the following equation:
I. For o-Methoxyphenol :
RP,E= kE [monomer]1.13 [acid]1.17
II. For o-cresol:
RP,E = kE [monomer]0.8[acid]0.9
III.For pyrrole:
= kE [comonomer]1.14 [acid]0.9 RP,E
Iv.For o-Methoxyphenol-co -pyrrole:
= kE [comonomer]2.1 [acid]0.8 RP,E
v.For o-Methoxyphenol-co-pyrrole:
= kE [comonomer]2.3 [acid]1.1 RP,E
Also, the apparent activation energy (Ea) was calculated for each Electropolymerization system and the data are summarized in the following table:
Ea
(Kj mol-1) Name of monomer
26 o-Methoxyphenol
34.4 o-Methylphenol
48.6 Pyrrole
42.2 o-Methoxyphenol-co-pyrrole
22 o-Methylphenol-co-pyrrole
The mechanism of the anodic oxidative Electropolymerization in each investigated monomer type in sulfuric acid medium is suggested. The copolymers composition was investigated by the determination of r1 and r2 by fineman –Ross method and it was found to be block in nature.
Also it contains the cyclic voltammetry measurements of the polymer formation in each case; the obtained results reveal the following:
In case of (o-Methoxyphenol).
The voltammogram exhibits two anodic peaks at-200 and +1080 mV (vs. SCE) and one cathodic peak at 225 mV (vs. SCE)
.In case of (o-Methylphenol).
The voltammogram exhibits two anodic peaks at-200 and +850 mV (vs. SCE) and one cathodic peak at 223 mV (vs. SCE)
In case of (pyrrole).
The voltammogram exhibits only one anodic peak at+940 mV (vs. SCE) and one reduction peak (I’) at 190mV (vs. SCE).
In case of (a binary mixture of o-MP and pyrrole)
The voltammogram exhibits only one anodic peak at+720 mV (vs. SCE) and one reduction peak (I’) at 140mV (vs. SCE).
In case of (a binary mixture of o-cresol and pyrrole)
The voltammogram exhibits only one anodic peak at+760 mV (vs. SCE). and one reduction peak (I’) at 200mV (vs. SCE).
Part (2):
In this part, the characterizations of all obtained polymer films at optimum conditions which give homogeneous film were investigated. The characterization tools are elemental analysis, absorption spectroscopy using IR, UV-visible and 1HNMR instruments’-ray diffraction analyses for determination of polymer crystallinity are also investigated. This is confirmed by scanning electron microscopy which gives an idea about the morphology.
Thermal analysis (TGA) is also investigated which confirm the suggested of the prepared polymers.
Part (3):
This part includes the application of the prepared polymer samples as adsorbent of pb [II] ions and antimicrobial activity. The results show that polymers and copolymers are a good candidate for pb [II] ions adsorbent and as antimicrobial activity.
Part (4):
This part contains the conclusion of the three chapters of this thesis.