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TY  - THES
AU  - Zhang, Chunchen
TI  - Reversible gelation, thermoresponsiveness and formation of double networks by N-alkylated poly(N-vinylamide)s
PB  - RWTH Aachen University
VL  - Dissertation
CY  - Aachen
M1  - RWTH-2025-02930
SP  - 1 Online-Ressource : Illustrationen
PY  - 2025
N1  - Veröffentlicht auf dem Publikationsserver der RWTH Aachen University
N1  - Dissertation, RWTH Aachen University, 2025
AB  - 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
LB  - PUB:(DE-HGF)11
DO  - DOI:10.18154/RWTH-2025-02930
UR  - https://publications.rwth-aachen.de/record/1007082
ER  -