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%0 Thesis
%A Zhang, Chunchen
%T Reversible gelation, thermoresponsiveness and formation of double networks by N-alkylated poly(N-vinylamide)s
%I RWTH Aachen University
%V Dissertation
%C Aachen
%M RWTH-2025-02930
%P 1 Online-Ressource : Illustrationen
%D 2025
%Z Veröffentlicht auf dem Publikationsserver der RWTH Aachen University
%Z Dissertation, RWTH Aachen University, 2025
%X Poly(N-vinylamide)s are attractive building blocks for hydrogels due to their good biocompatibility and versatile substitution at the amide position or after hydrolysis via the amine function. Gels of poly(N-alkyl-N-vinylamides) with short N-alkyl side chains exhibit a volume phase transition in water, similar to which is observed for poly(N-isopropylacrylamide). This has been rarely investigated so far. In this work, firstly, poly(N-alkyl-N-vinylamide)s with different alkyl chain length (n) and degree of substitution (DS) were prepared by N-alkylation of poly(N-vinylamide)s. Inverse molecular weight dependence of the cloud points of poly(N-alkyl-N-vinylamide)s (n = 3 or 4) polymers were observed meaning that the lower molecular weight samples have lower cloud points. Next, three types of hydrogels were prepared from the aforementioned polymers: (i) reversibly crosslinked hydrogels prepared from poly(N-alkyl-N-vinylamide)s (n = 10 to 18, DS = 3 mol
%F PUB:(DE-HGF)11
%9 Dissertation / PhD Thesis
%R 10.18154/RWTH-2025-02930
%U https://publications.rwth-aachen.de/record/1007082