The kinetics of polypyrrole, polyaniline, polystyrene and polyurethane syntheses were examined using in-situ techniques. The resulting polymers were analyzed by ex-situ analytical techniques. Comparison of results obtained by different techniques was made. / Polypyrrole was synthesized by the chemical oxidative route. The polymerization using potassium ferricyanide was monitored by Raman spectroscopy, potentiometry and microelectrode analysis. The kinetics were found to resemble exponential decay. The stoichiometry of the polymerization was 2.5 ferricyanide per pyrrole that polymerized and remained constant throughout the experimental period. / The polymerization of aniline by ammonium peroxysulfate was monitored by Raman, potentiometry, calorimetry, quartz crystal microbalance (QCM), conductance measurements, viscometry and visible absorption spectroscopy. QCM and visible absorption spectroscopy were used to probe the nucleation stage. The results showed that polymerization occurred following an induction period. The stoichiometry of aniline polymerization was found to be 1.2 peroxysulfate per aniline consumed. / The induction period of aniline-peroxysulfate system can be reduced by using mixed oxidizers. In the experiment, cerium (IV) was used as co-oxidant with peroxysulfate. A significant decrease in the induction period was observed with 0.01% of cerium (IV). The same effect can also be achieved by adding polyaniline to provide reaction sites for the monomers. / The kinetics of styrene polymerization were monitored by Raman. The decrease in the 1630 cm$\sp{-1}$ aliphatic C=C stretching was interpreted as percent styrene conversion. The 1600 cm$\sp{-1}$ aromatic C=C stretching was used as an internal standard. UV absorption spectroscopy (UV) was used to quantify the amount of styrene in the polymerizing mixture. / IR spectroscopy (IR) and Raman were used to monitor the reaction of modified diphenylmethane-4-4$\sp\prime$-diisocyanate (MDI) and polyether polyol (polyol). The area under the isocyanate IR stretching peak was quantified using the C-H stretching peak as internal standard. In the Raman experiment, the decrease in the 1060 cm$\sp{-1}$ Raman feature and the increase in the 1140 cm$\sp{-1}$ peak were analyzed. / Source: Dissertation Abstracts International, Volume: 54-03, Section: B, page: 1371. / Major Professor: Joseph B. Schlenoff. / Thesis (Ph.D.)--The Florida State University, 1993.
| Identifer | oai:union.ndltd.org:fsu.edu/oai:fsu.digital.flvc.org:fsu_76892 |
| Contributors | Fong, Yoke Kum., Florida State University |
| Source Sets | Florida State University |
| Language | English |
| Detected Language | English |
| Type | Text |
| Format | 218 p. |
| Rights | On campus use only. |
| Relation | Dissertation Abstracts International |
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