Sistema ETD

banca dati delle tesi e dissertazioni accademiche elettroniche

 

Tesi etd-11252013-102136


Tipo di tesi
Tesi di laurea magistrale
Autore
AGUIRRE, JORDAN RONALD
URN
etd-11252013-102136
Titolo
Novel ionomeric polyurethanes with chromogenic properties.
Struttura
CHIMICA E CHIMICA INDUSTRIALE
Corso di studi
CHIMICA INDUSTRIALE
Commissione
relatore Bronco, Simona
Parole chiave
  • chromogenic
  • perylene
  • ionomer
  • polyurethane
  • DABCO
Data inizio appello
14/12/2013;
Disponibilità
completa
Riassunto analitico
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.
File