期刊
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
卷 56, 期 28, 页码 7971-7976出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.7b01812
关键词
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资金
- National Science Fund [51603192, 11372286]
- Basic and Advanced Technology Research Project of Henan Province [152300410033, 162300410003]
- International Technological Cooperation Project [2015DFA30550]
- State Key Laboratory Cultivation Base for Nonmental Composites and Functional Materials [15zxfk06]
- Scientific Research Foundation for Returned Overseas Chinese Scholars, State Education Ministry
This work provides a new method to prepare poly(vinyl alcohol) (PVA) hydrogel. Compared with the traditional repeated freeze thaw method, the physical cross-linking method was adopted to prepare a high-strength hydrogel in one step. The morphology, melting, and crystallization behavior and mechanical properties of the hydrogel were investigated. The hydrogel has a high water content and reswelling rate, as well as a high melting temperature and mechanical strength. It also has a stable cross-linked structure in the temperature range of 25-65 degrees C. The hydrogel fracture surface shows ductile and brittle fracture morphology. The protrusions in the hydrogel three-dimensional topography are more numerous and homogeneous when the solvent preparation ratio is 4-6. On the basis of the good plasticity of the hydrogels, tubular hydrogels with inner diameters of 1-6 mm are also prepared to widen their applications.
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