Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The effect of the cross-linker content on the swelling properties of intelligent gels
This paper presents the procedure for the synthesis of hydrogels based on N-isopropylacrylamide (NIPAM) and 2-hydroxypropyl methacrylate (HPMet) using dioxan as a solvent. Hydrogels were obtained by radical polymerization using different contents of ethylene glycol dimethacrylate as a cross-linker and benzoyl peroxide as the initiator. In the FTIR spectra of poly(N-isopropylacrylamide-co- 2-hydroxypropylmethacrylate) (p(NIPAM-HPMet)) xerogel, new absorption bands are present and there are no specific bands characteristic of a monomer NIPAM, which indicates that copolymerization was performed. SEM micrographs show porous surfaces of xerogels. The aim of this work was the investigation of the swelling behavior for all synthesized hydrogels with different cross-linker content at the temperature from 20 to 40°C. The sample of p(NIPAM-HPMet) with the lowest cross-linker content reached the highest swelling degree at 20°C (α=20.23). The degree of swelling decreased with increa-sing the cross-linker content and temperature, so the samples with highest cross-linker content at 40°C reached the swelling degree of 2.05.
The effect of the cross-linker content on the swelling properties of intelligent gels
This paper presents the procedure for the synthesis of hydrogels based on N-isopropylacrylamide (NIPAM) and 2-hydroxypropyl methacrylate (HPMet) using dioxan as a solvent. Hydrogels were obtained by radical polymerization using different contents of ethylene glycol dimethacrylate as a cross-linker and benzoyl peroxide as the initiator. In the FTIR spectra of poly(N-isopropylacrylamide-co- 2-hydroxypropylmethacrylate) (p(NIPAM-HPMet)) xerogel, new absorption bands are present and there are no specific bands characteristic of a monomer NIPAM, which indicates that copolymerization was performed. SEM micrographs show porous surfaces of xerogels. The aim of this work was the investigation of the swelling behavior for all synthesized hydrogels with different cross-linker content at the temperature from 20 to 40°C. The sample of p(NIPAM-HPMet) with the lowest cross-linker content reached the highest swelling degree at 20°C (α=20.23). The degree of swelling decreased with increa-sing the cross-linker content and temperature, so the samples with highest cross-linker content at 40°C reached the swelling degree of 2.05.
The effect of the cross-linker content on the swelling properties of intelligent gels
Ilić-Stojanović, Snežana S. (Autor:in) / Nikolić, Ljubiša B. (Autor:in) / Nikolić, Vesna D. (Autor:in) / Petrović, Slobodan D. (Autor:in) / Zdravković, Aleksandar S. (Autor:in) / Stamenković, Jakov V. (Autor:in)
01.01.2014
Savremene tehnologije (2014) 3(2):10-15 ; ISSN: 2217-9712
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
DDC:
710
Effect of crosslinker on swelling and thermodynamic properties of polyacrylamide gels
| BASE | 1989
Swelling of iota-carrageenan gels prepared with various CaCl2 content: A fluorescence study
| BASE | 2008
| British Library Online Contents | 2013
| British Library Online Contents | 2004
Effect of temperature and graphene oxide on the swelling of PAAm-GO composite gels
| BASE | 2019