Back to Search
Start Over
Microwave Assisted Preparation of Antimicrobial Chitosan with Guanidine Oligomers and Its Application in Hygiene Paper Products
- Source :
- Polymers, Vol 9, Iss 11, p 633 (2017), Polymers, Vol 9, Iss 12, p 633 (2017), Polymers; Volume 9; Issue 12; Pages: 633, Polymers
- Publication Year :
- 2017
- Publisher :
- MDPI AG, 2017.
-
Abstract
- Guanidinylated chitosan (GCS) was prepared by grafting guanidine oligomers onto chitosan under microwave irradiation. The structure of GCS characterized by FT-IR and 1H NMR verified the covalent bonding between the guanidine oligomers and chitosan; the effects of molar ratio, reaction temperature, and time were investigated and the degree of substitution of GCS reached a maximum of 25.5% under optimized conditions in this work. The resulting GCS showed significantly enhanced antimicrobial activities. The results obtained from the dynamic UV absorption of Escherichia coli (E. coli) and atomic force microscopy (AFM) revealed that the deactivation of E. coli by GCS was due to the destructing of the cell membrane and the prompt release of cytoplasm from the bacterial cells. The adsorption of GCS onto cellulose fibers and the antimicrobial efficiency of the hygiene papers with GCS were also investigated. Microwave irradiation as a green assisted method was applied to promote this reaction. This facile approach allowed chitosan to be guanidinylated without tedious preparation procedures and thus broadened its application as a biocompatible antimicrobial agent.
- Subjects :
- Materials science
Polymers and Plastics
02 engineering and technology
guanidine
010402 general chemistry
01 natural sciences
Article
lcsh:QD241-441
Chitosan
hygiene paper
chemistry.chemical_compound
Adsorption
lcsh:Organic chemistry
Polymer chemistry
Guanidine
microwave irradiation
antimicrobial activity
General Chemistry
021001 nanoscience & nanotechnology
Grafting
Antimicrobial
0104 chemical sciences
Cellulose fiber
chemistry
Covalent bond
chitosan
Proton NMR
0210 nano-technology
hormones, hormone substitutes, and hormone antagonists
Nuclear chemistry
Subjects
Details
- ISSN :
- 20734360
- Volume :
- 9
- Database :
- OpenAIRE
- Journal :
- Polymers
- Accession number :
- edsair.doi.dedup.....b6d05a0b96979015434b762882f69f00