Conclusion Of Conclusion And Conclusion

Summary and Conclusions

The present thesis comprises of three main chapters:

The first chapter (introduction), this chapter includes literature survey on:

1. The history, classification, chemistry and some applications of the polymer compounds,

2. The fate of heavy metals as hazardous environmentally pollutants, the general properties of the heavy metal ions, sources of contamination by heavy metals, natural sources and their toxic effects on human health,

3. The history, classification and the chemistry of the pesticides and their fate in the environment,

4. The use of polymeric materials for sensing of pollutants.

The second chapter (materials and methods):

This chapter is concerned with includes with the experimental part including chemicals, methods for preparation, the instruments used and methods of calculations.

The third chapter (results and discussion) which divided into four main sections:

Section (1)

Viscosity Measurements of the polymethyl methacrylate samples. The viscosity average molecular weight of the polymethyl methacrylate samples is measured by using viscometer and calculated using the Mark-Houwink equation ([η] = 4.85 x 10-3M 0.80 mL/g (at 25oC)) and were found to be 268656.46 and 258519.86 for the doped and undoped polymethyl methacrylate samples, respectively. The molecular weight increased in case of doped PMMA than undoped PMMA confirming that the doping process had take place.

7. Providing an evidence for a chemical bond between the polymer and the complex:

The amount of complex incorporated into the polymer molecules determined using fluorescence spectroscopy. Fluorescence spectra of the polymer doped with complex in chloroform solution were compared to its monomer complex and depending on the relation of the fluorescence of the polymer to that of its complex, the percent content of the covalently bound was calculated. The experimental data concerning quantity of the complex chemically bound to the polymer is 73.69 %.

Section