Thesis etd-11252013-102136 |
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Thesis type
Tesi di laurea magistrale
URN
etd-11252013-102136
Thesis title
Novel ionomeric polyurethanes with chromogenic properties.
Department
CHIMICA E CHIMICA INDUSTRIALE
Course of study
CHIMICA INDUSTRIALE
Supervisors
.
relatore Bronco, Simona
Keywords
- chromogenic
- DABCO
- ionomer
- perylene
- polyurethane
Graduation session start date
14/12/2013
Availability
Full
Abstract (Inglese)
Abstract (Italiano)
A series of polyurethanes are synthesized from traditional components, HDI and PEG-1500. A novel ionomer, DABCO(OH)2, is included in reaction feeds, yielding ionomeric polyurethanes. PzPer, a water-dispersible and aggregachromic dye, is dispersed at low to very low loadings (0.50 to 0.01% wt). Polymers synthesized are characterized by 1H-NMR, solubility tests, GPC, FTIR, DSC, and TGA. Samples with dye dispersed are studied by exposure to solvents, and by fluorescence spectroscopy.
Characterization results show that polymers synthesized are typical polyurethanes, while the amount of ionomer incorporated does not exceed 1.5% mol of total composition. Studies on chromogenicity indicate increase in emission intensity and simultaneous increase in aggregation; correlation with results in literature suggests strong chromophore aggregates, attributable to polar environment.
Characterization results show that polymers synthesized are typical polyurethanes, while the amount of ionomer incorporated does not exceed 1.5% mol of total composition. Studies on chromogenicity indicate increase in emission intensity and simultaneous increase in aggregation; correlation with results in literature suggests strong chromophore aggregates, attributable to polar environment.
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| Nome file | Dimensione |
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| Tesi_Jordan_2013.pdf | 3.74 Mb |
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