College of Science

 The work presented in this thesis includes the preparation and characterization of choline dodecyl benzene sulfonate and phenyl trimethyl ammonium dodecyl benzene sulfonate, which were prepared and showed almost room temperature molten salts (ionic liquids) of 118 oC and 91.9 oC respectively, as shown in scheme (1): (Ammonium dodecyl benzene sulfonate /choline chloride) mixture has a deep eutectic point of 15 oC, while the two mixtures (benzoic acid / choline chloride) and (salicylic acid / choline chloride) gave a similar eutectic point of 60 oC, which were co

either alone or composite with ionic liquids up to 110 oC, choline dodecyl benzene sulfonate, ammonium dodecyl benzene sulfonate and choline chloride / urea were added in 10 wt % and 20 wt %. The conductivities of both composite polymers were improved changing the behavior of these polymers from insulator into antistatic characterization as their conductivities reach 10-9 S. cm-1.

    Pregnancy is associated with normal physiological changes that assist fetal survival as well as preparation for labour. It is typically broken into three trimesters, each of about three months. These distinctions are useful in describing the changes that take place over time. Biochemical parameters reflect these  adaptive changes are clearly distinct from the non-pregnant state. The mother and the placenta produces many hormones, maternal thyroid function during pregnancy is important for both the mother and the developing fetus.