Abstract
Spherical glutaraldehyde cross-linked poly(vinyl alcohol) (PVA) hydrogels (G-PVA) were prepared in three steps: gelatification, cross-linking, and removal of alginate. Gelatification was carried out by dropping a solution of alginate, PVA, and glutaraldehyde into a calcium chloride solution to form calcium alginate. Calcium alginate gels were prepared at 20°C, 40°C, 60°C, and 80°C to study the effect of gelatification temperature on the formation of pores on the surface of G-PVA. The effect of the alginate content was studied. PVA and glutaraldehyde were cross-linked by immersion of the gels in a solution of H2SO4 and Na2SO4. The effect of sodium alginate and inorganic salts, such as MgSO4 and K2SO4, on the formation of pores on the surface of G-PVA was confirmed.
Acknowledgments
This work was partially supported by the MEXT-Supported Program for the Strategic Research Foundation at Private Universities, 2012-2016 (S1201026). We appreciate the valuable cooperation of Kuraray Co., Ltd. for this research.
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©2016 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Original articles
- Preparation and characterization of graphene oxide/PMMA nanocomposites with amino-terminated vinyl polydimethylsiloxane phase interfaces
- Effect of exfoliated graphite nanoplatelets on thermal and heat deflection properties of kenaf polypropylene hybrid nanocomposites
- Synthesis of spherical porous cross-linked glutaraldehyde/poly(vinyl alcohol) hydrogels
- Influence of process parameters on property of PP/EPDM blends prepared by a novel vane extruder
- Influence of processing conditions on heat sealing behavior and resultant heat seal strength for peelable heat sealing of multilayered polyethylene films
- Thermal degradation kinetics and lifetime of HDPE/PLLA/pro-oxidant blends
- Effect of notch sensitivity on the mechanical properties of HA/PEEK functional gradient biocomposites
- The influence of melt mixing on the stability of cellulose acetate and its carbon nanotube composites
- Experimental analysis of resin infusion in air cushion method
- 3D-MID manufacturing via laser direct structuring with nanosecond laser pulses
Artikel in diesem Heft
- Frontmatter
- Original articles
- Preparation and characterization of graphene oxide/PMMA nanocomposites with amino-terminated vinyl polydimethylsiloxane phase interfaces
- Effect of exfoliated graphite nanoplatelets on thermal and heat deflection properties of kenaf polypropylene hybrid nanocomposites
- Synthesis of spherical porous cross-linked glutaraldehyde/poly(vinyl alcohol) hydrogels
- Influence of process parameters on property of PP/EPDM blends prepared by a novel vane extruder
- Influence of processing conditions on heat sealing behavior and resultant heat seal strength for peelable heat sealing of multilayered polyethylene films
- Thermal degradation kinetics and lifetime of HDPE/PLLA/pro-oxidant blends
- Effect of notch sensitivity on the mechanical properties of HA/PEEK functional gradient biocomposites
- The influence of melt mixing on the stability of cellulose acetate and its carbon nanotube composites
- Experimental analysis of resin infusion in air cushion method
- 3D-MID manufacturing via laser direct structuring with nanosecond laser pulses