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  4. Gezielt abbaubare Polymersysteme: Synthese und Degradationsmechanismen
 
Zitierlink URN
https://nbn-resolving.de/urn:nbn:de:gbv:46-00102200-19

Gezielt abbaubare Polymersysteme: Synthese und Degradationsmechanismen

Veröffentlichungsdatum
2011-08-22
Autoren
Schrübbers, Steffen  
Betreuer
Hartwig, Andreas  
Gutachter
Wöhrle, Dieter  
Zusammenfassung
Polymers containing UV-labile groups were prepared and decomposition by UV irradiation with low dose rates was examined. Two different degradation principles were used: direct cleavage of triazene groups and catalytic reaction of carbonate groups with a strong acid. The reaction of the UV labile group and the change of the mechanic properties due to the reaction were analyzed. In contrast to high dose rates no ablation of the triazene containing polymers took place but cross-linking. The cross-linking reaction is explained by the addition of a radical formed during irradiation to an aromatic ring. In contrast the polycarbonates could be easily degraded at higher temperatures but the degree of degradation was strongly dependent on the nature of the acid.
Schlagwörter
polymer degradation

; 

triazene

; 

polycarbonate

; 

UV irradiation

; 

photoacid

; 

photoacid generator
Institution
Universität Bremen  
Fachbereich
Fachbereich 02: Biologie/Chemie (FB 02)  
Dokumenttyp
Dissertation
Zweitveröffentlichung
Nein
Sprache
Deutsch
Dateien
Lade...
Vorschaubild
Name

00102200-1.pdf

Size

4.71 MB

Format

Adobe PDF

Checksum

(MD5):7d6dfe578dbc5bca8709c54aeab7bf16

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