NWIPB OpenIR
Enhanced mechanical stability and sensitive swelling performance of chitosan/yeast hybrid hydrogel beads
Feng, Diejing1; Bai, Bo2; Wang, Honglun2; Suo, Yourui2
2016
发表期刊NEW JOURNAL OF CHEMISTRY
卷号40期号:4页码:3350-3362
文章类型Article
摘要Up to the present time, improving the mechanical stability of hydrogel beads is still a challenging task for future applications of chitosan hydrogels. In this work, novel and eco-friendly chitosan/yeast hybrid hydrogel beads were fabricated by facile introduction of yeast cells into the chitosan matrix through alkali gelation. A detailed mechanism of formation of the beads is proposed and the structures and morphologies of the manufactured products were characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM), respectively. The mechanical stability test showed that impregnation of yeast cells into the chitosan matrix could effectively enhance the mechanical stability of chitosan/yeast hybrid hydrogel beads under the effects of various intensities of ultrasonic waves and centrifugal forces in comparison with pure chitosan hydrogel beads. The resultant product with 40 wt% yeast content achieved a maximum swelling ratio of 31.7 g g(-1) in distilled water. The swelling kinetics and diffusion kinetics of chitosan/yeast hybrid hydrogel beads in distilled water were also investigated. Benefiting from the coupling effect of its crosslinked three-dimensional network structure and ample chemical functional groups derived from its own components, chitosan/yeast hybrid hydrogel beads have manifested a rapid and adjustable response to external environmental stimuli including the pH of the external solution, salt concentration, ionic valence and temperature. In particular, the distinct loading and slow-release efficiency of chitosan/yeast hybrid hydrogel beads for humic acid as a fertilizer model is pH-dependent. This makes the chitosan/yeast hybrid hydrogel beads good candidates for controlled-release carrier biomaterials, which is very likely to develop into a patented utilization of chitosan/yeast hybrid hydrogel beads in future applications.
WOS标题词Science & Technology ; Physical Sciences
DOI10.1039/c5nj02404h
关键词[WOS]SUPERABSORBENT HYDROGEL ; AQUEOUS-SOLUTIONS ; BAKERS-YEAST ; WASTE-WATER ; HUMIC-ACID ; CREEPING BENTGRASS ; NUTRIENT CONTENT ; CELL-WALLS ; LEAD IONS ; ADSORPTION
收录类别SCI
语种英语
项目资助者Shaanxi Provincial Natural Science Foundation of China(2015JM2071) ; Fundamental Research Funds for the Central Universities(310829162014)
WOS研究方向Chemistry
WOS类目Chemistry, Multidisciplinary
WOS记录号WOS:000373993600049
引用统计
被引频次:34[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/5715
专题中国科学院西北高原生物研究所
作者单位1.Changan Univ, Coll Environm Sci & Engn, Xian 710054, Peoples R China
2.Chinese Acad Sci, Key Lab Tibetan Med Res, Northwest Inst Plateau Biol, Xining 810001, Peoples R China
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Feng, Diejing,Bai, Bo,Wang, Honglun,et al. Enhanced mechanical stability and sensitive swelling performance of chitosan/yeast hybrid hydrogel beads[J]. NEW JOURNAL OF CHEMISTRY,2016,40(4):3350-3362.
APA Feng, Diejing,Bai, Bo,Wang, Honglun,&Suo, Yourui.(2016).Enhanced mechanical stability and sensitive swelling performance of chitosan/yeast hybrid hydrogel beads.NEW JOURNAL OF CHEMISTRY,40(4),3350-3362.
MLA Feng, Diejing,et al."Enhanced mechanical stability and sensitive swelling performance of chitosan/yeast hybrid hydrogel beads".NEW JOURNAL OF CHEMISTRY 40.4(2016):3350-3362.
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