Hybrid films of poly(ethylene oxide- b -amide-6) containing sol–gel silicon or titanium oxide as inorganic fillers: effect of morphology and mechanical properties on gas permeability

Polymer ◽  
2000 ◽  
Vol 41 (14) ◽  
pp. 5461-5470 ◽  
Author(s):  
R.A. Zoppi ◽  
S. das Neves ◽  
S.P. Nunes
Keyword(s):  
Mechanical Properties ◽  
Ethylene Oxide ◽  
Titanium Oxide ◽  
Gas Permeability ◽  
Sol Gel ◽  
Hybrid Films ◽  
Poly Ethylene Oxide ◽  
Inorganic Fillers ◽  
Poly Ethylene ◽  
Morphology And Mechanical Properties

scholarly journals Electrospun Alginate Fibers: Mixing of Two Different Poly(ethylene oxide) Grades to Improve Fiber Functional Properties

Nanomaterials ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 971 ◽  
Author(s):  
Barbara Vigani ◽  
Silvia Rossi ◽  
Giulia Milanesi ◽  
Maria Bonferoni ◽  
Giuseppina Sandri ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Ethylene Oxide ◽  
Electrospinning Process ◽  
Mechanical Resistance ◽  
Fiber Morphology ◽  
Chain Entanglement ◽  
Poly Ethylene Oxide ◽  
Alginate Fibers ◽  
Poly Ethylene ◽  
Morphology And Mechanical Properties

The aim of the present work was to investigate how the molecular weight (MW) of poly(ethylene oxide) (PEO), a synthetic polymer able to improve alginate (ALG) electrospinnability, could affect ALG-based fiber morphology and mechanical properties. Two PEO grades, having different MWs (high, h-PEO, and low, l-PEO) were blended with ALG: the concentrations of both PEOs in each mixture were defined so that each h-PEO/l-PEO combination would show the same viscosity at high shear rate. Seven ALG/h-PEO/l-PEO mixtures were prepared and characterized in terms of viscoelasticity and conductivity and, for each mixture, a complex parameter rH/rL was calculated to better identify which of the two PEO grades prevails over the other in terms of exceeding the critical entanglement concentration. Thereafter, each mixture was electrospun by varying the process parameters; the fiber morphology and mechanical properties were evaluated. Finally, viscoelastic measurements were performed to verify the formation of intermolecular hydrogen bonds between the two PEO grades and ALG. rH/rL has been proved to be the parameter that better explains the effect of the electrospinning conditions on fiber dimension. The addition of a small amount of h-PEO to l-PEO was responsible for a significant increase in fiber mechanical resistance, without affecting the nano-scale fiber size. Moreover, the mixing of h-PEO and l-PEO improved the interaction with ALG, resulting in an increase in chain entanglement degree that is functional in the electrospinning process.

Electrospinning of Sodium Alginate with Poly(ethylene oxide), Gelatin and Nanometer Silver Colloid

2009 ◽  
Vol 610-613 ◽  
pp. 1188-1191 ◽  
Author(s):  
Qing Shan Kong ◽  
Zi Sen Yu ◽  
Quan Ji ◽  
Yan Zhi Xia
Keyword(s):  
Mechanical Properties ◽  
Ethylene Oxide ◽  
Sodium Alginate ◽  
Silver Colloid ◽  
Biocompatible Polymer ◽  
Water Property ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Nanofiber Mats ◽  
Morphology And Mechanical Properties

In this study, biocompatible polymer poly(ethylene oxide) (PEO), gelation (denatured collagen) and nanometer silver colloid was added to the electrospinnning solution of alginate sodium to get anti-bacterial nanofiber mats. The morphology and mechanical properties of the electrospun mats have been investigated. Smooth fibers with diameters around 300 nm were obtained from 4.0 % solutions of varied alginate/PEO/gelation proportion. The anti-water property of the electrospun mats has been improved by crosslink with glutaraldehyde acetone solution and aqueous calcium chloride and ethanol.

The morphology and mechanical properties of sodium alginate based electrospun poly(ethylene oxide) nanofibers

2009 ◽  
Vol 49 (1) ◽  
pp. 52-59 ◽  
Author(s):  
SungCheal Moon ◽  
Beom-Young Ryu ◽  
JaeKon Choi ◽  
ByungWook Jo ◽  
Richard J. Farris
Keyword(s):  
Mechanical Properties ◽  
Ethylene Oxide ◽  
Sodium Alginate ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Morphology And Mechanical Properties

Threading Polymer into Nanotubes:  Evidence of Poly(ethylene oxide) Inclusion in Titanium Oxide

2005 ◽  
Vol 17 (8) ◽  
pp. 2028-2033 ◽  
Author(s):  
Maritza Volel ◽  
Michel Armand ◽  
Wladimir Gorecki ◽  
Marie-Louise Saboungi
Keyword(s):  
Ethylene Oxide ◽  
Titanium Oxide ◽  
Oxide Inclusion ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene
Sign in / Sign up

Export Citation Format

Share Document