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1) Polyetherurethaneureas (PEUUs) with different soft segment lengths and hard segment structures were synthesized and their photostability was studied. 2) PEUUs with longer soft segments (PEG 1000) experienced more rapid decreases in molecular weight and increased gel formation upon UV irradiation compared to those with shorter soft segments (PEG 400). 3) PEUUs chain extended with 1,3-propanediamine were more photostable than those chain extended with 1,6-hexanediamine, indicating the hard segment structu

Author

nootsam

Language

EN