Merck
  • Home
  • Search Results
  • Poly(vinyl alcohol)/sodium alginate/layered silicate based nanofibrous mats for bacterial inhibition.

Poly(vinyl alcohol)/sodium alginate/layered silicate based nanofibrous mats for bacterial inhibition.

Carbohydrate polymers (2013-02-13)
Wei Li, Xueyong Li, Yang Chen, Xiaoxia Li, Hongbing Deng, Ting Wang, Rong Huang, Gang Fan
ABSTRACT

Poly(vinyl alcohol) (PVA)/sodium alginate (ALG)/organic rectorite (OREC) composite nanofibrous mats are fabricated by electrospinning aqueous solutions with different mixing ratios. Both good fiber shape and three-dimensional structure of nanofibrous mats can be observed by Field Emission Scanning Electron Microscopy. Energy-dispersive X-ray spectroscopy shows the existence of OREC in the as-spun composite mats. In addition, small-angle X-ray diffraction confirms that the interlayer of OREC is intercalated by ALG/PVA chains, and the distance between OREC interlayers is increased from 4.50 to 4.74 nm. Wide angle X-ray diffraction and Fourier transform infrared spectra further verify the intercalation is between polymers and layered silicate. Moreover, the thermal gravimetric analysis shows that the addition of OREC has only a small effect on the thermal stability of composites. Furthermore, the antibacterial experiments illustrate that OREC can enhance the bacterial inhibition ability of nanofibrous mats against Escherichia coli and Staphylococcus aureus.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Poly(vinyl alcohol), 87-90% hydrolyzed, average mol wt 30,000-70,000
Sigma-Aldrich
Poly(vinyl alcohol), Fully hydrolyzed
Sigma-Aldrich
Alginic acid sodium salt from brown algae, BioReagent, suitable for plant cell culture, low viscosity, powder
Sigma-Aldrich
Alginic acid sodium salt from brown algae, Medium viscosity
Sigma-Aldrich
Mowiol® 20-98, Mw ~125,000
Sigma-Aldrich
Alginic acid sodium salt from brown algae, low viscosity
Sigma-Aldrich
Poly(vinyl alcohol), average Mw 146,000-186,000, 87-89% hydrolyzed
Sigma-Aldrich
Poly(vinyl alcohol), Mw 13,000-23,000, 87-89% hydrolyzed
Sigma-Aldrich
Poly(vinyl alcohol), Mw 89,000-98,000, 99+% hydrolyzed
Sigma-Aldrich
Poly(vinyl alcohol), average Mw 13,000-23,000, 98% hydrolyzed
Sigma-Aldrich
Poly(vinyl alcohol), average Mw 31,000-50,000, 87-89% hydrolyzed
Sigma-Aldrich
Poly(vinyl alcohol), Mw 85,000-124,000, 99+% hydrolyzed
Sigma-Aldrich
Poly(vinyl alcohol), Mw 31,000-50,000, 98-99% hydrolyzed
Sigma-Aldrich
Poly(vinyl alcohol), average Mw 85,000-124,000, 87-89% hydrolyzed
Sigma-Aldrich
Alginic acid sodium salt from brown algae, BioReagent, suitable for immobilization of micro-organisms
Sigma-Aldrich
Mowiol® 8-88, Mw ~67,000
Sigma-Aldrich
Mowiol® 4-88, Mw ~31,000
Sigma-Aldrich
Poly(vinyl alcohol), average Mw 130,000, 99+% hydrolyzed
Sigma-Aldrich
Mowiol® 4-98, Mw ~27,000
Sigma-Aldrich
Alginic acid sodium salt, powder
Sigma-Aldrich
Poly(vinyl alcohol), Mw 146,000-186,000, 99+% hydrolyzed
Sigma-Aldrich
Poly(vinyl alcohol), Mw 9,000-10,000, 80% hydrolyzed
Sigma-Aldrich
Alginic acid calcium salt from brown algae
Sigma-Aldrich
Mowiol® 10-98, Mw ~61,000
Sigma-Aldrich
Mowiol® 6-98, Mw ~47,000
Sigma-Aldrich
Alginic acid from brown algae
Sigma-Aldrich
Mowiol® 56-98, Mw ~195,000
Sigma-Aldrich
Mowiol® 28-99, Mw ~145,000
Sigma-Aldrich
Mowiol® 40-88, average Mw ~205,000 g/mol
Sigma-Aldrich
Mowiol® 18-88, Mw ~130,000