| Summary: | 碩士 === 國立交通大學 === 應用化學系 === 91 === Self-condensation of AB2 type monomers, 4-{4-[di(4-aminophenyl)methyl]phenoxy}phthalic acid (3) and the diacid monomer (10) using TPP and pyridine as condensing agents in NMP (1-methyl-2-pyrrolidinone) yielded hyperbranched poly(ether imide), P1 and hyperbranched poly(ether imide amide), P6. After compound (9) was reacted with 1,4-diaminophenylene, TPP and pyridine was added directly yielded Hyperbranched poly(ether imide amide), P6’.
The hyperbranched macromolecules contain a large number of chain end functional groups, and the physical properties of the polymers such as thermal properties and solubility depend on the nature of the end groups. The degree of branching of the hyperbranched polymers, P1, P6 and P6’, was determined with the help of model compounds using 1H-NMR and was found to be 56%, 60.4% and 60.9%. The end capping reactions of the hyperbranched polymers, P1 and P6, also ensure that the physical properties of the polymers rely on the nature of the chain ends. In addition, the structure of the PI-POSS was globular and the morphology of PI-POSS was regular, which were determined by the measurement of TEM.
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