Results
Title

基于壳聚糖/聚丙烯酸/纳米银的高强抗菌水凝胶.

Authors

颜录科; 何苗苗; 昝兴杰

Abstract

The chitosan (CS)/poly(acrylic acid) (PAA) hydrogel with a double network (DN) was prepared by photoinitiated copolymerization of acrylic acid (AA) and CS, using N,N′-methylenebisacrylamide (MBA) as crosslinker. CS/PAA/nano-silver composite hydrogel was subsequently obtained by incorporating silver nitrate into the hydrogel networks. The chemical structure of the CS/PAA hydrogel was confirmed by Fourier Transform Infrared Spectroscopy (FTIR). The mechanical performance of the hydrogel was evaluated by the universal testing machine. The antibacterial properties of the composite hydrogel were also investigated. The experimental results show that the mechanical properties of the CS/PAA hydrogel reached at the highest level when the mass fraction of AA and CS are 20% and 5%, respectively. The high strength of CS/PAA DN hydrogel was mainly attributed to the hydrogen bonding between the two networks of the DN hydrogel and coordination interactions between the fragments of AA and MBA. Moreover, a further increase in mechanical strength as high as 5.2 MPa was observed for the CS/PAA/nano silver hydrogel which shows the antibacterial properties with zone of inhibition of 3.2 mm.

Subjects

FOURIER transform infrared spectroscopy; SILVER nitrate; HYDROGEN bonding; CHEMICAL structure; HYDROGELS; ACRYLIC acid; COPOLYMERIZATION

Publication

Journal of Functional Polymers, 2019, Vol 32, Issue 4, p522

ISSN

1008-9357

Publication type

Academic Journal

DOI

10.14133/j.cnki.1008-9357.20180809001