Characterization of Graft-Modified Porous Polymer Membranes

1996 ◽  
Vol 35 (2) ◽  
pp. 450-457 ◽  
Author(s):  
Joni Hautojärvi ◽  
Kyösti Kontturi ◽  
Jan H. Näsman ◽  
Bror L. Svarfvar ◽  
Pasi Viinikka ◽  
...  
Keyword(s):  
Polymer Membranes ◽  
Porous Polymer

scholarly journals Production and Characterization of Porous Polymeric Membranes of PLA/PCL Blends with the Addition of Hydroxyapatite

2019 ◽  
Vol 3 (2) ◽  
pp. 45 ◽  
Author(s):  
Nayara Koba de Moura ◽  
Idália A. W. B. Siqueira ◽  
João Paulo de Barros Machado ◽  
Hueliton Wilian Kido ◽  
Ingrid Regina Avanzi ◽  
...  
Keyword(s):  
Polymer Surface ◽  
Calcium Nitrate ◽  
Polymer Membranes ◽  
Ammonium Phosphate ◽  
Polymeric Membranes ◽  
Porous Polymer ◽  
Poly Lactic Acid ◽  
Biological Studies ◽  
Phosphate Salts

Polymer membranes have been widely used in guided tissue regeneration (GTR) and guided bone regeneration (GBR). The literature recognizes that poly (lactic acid) (PLA)/poly (ε-caprolactone) (PCL) blends have better physicochemical properties and that a porous polymer surface facilitates cell adhesion and proliferation. In addition, hydroxyapatite (HAp) incorporated into the polymer matrix promotes osteoinduction properties and osteoconduction to the polymer-ceramic biocomposite. Therefore, polymer membranes of PLA/PCL blend with the addition of HAp could be an alternative to be used in GBR. HAp was obtained by precipitation using the mixture of solutions of tetrahydrate calcium nitrate and monobasic ammonium phosphate salts. The porous membranes of the PLA/PCL (80/20) blend with the addition of HAp were obtained by solvent casting with a controlled humidity method, with the dispersion of HAp in chloroform and subsequent solubilization with the components of the blend. The solution was poured into molds for solvent evaporation under a controlled humidity atmosphere. The membranes showed the formation of pores on their surface, together with dispersed HAp particles. The results showed an increase in the surface porosity and improved bioactivity properties with the addition of HAp. Moreover, in biological studies with cell culture, it was possible to observe that the membranes with HAp have no cytotoxic effect on MC3T3 cells. These results indicate a promising use of the new biomaterial for GBR.

Synthesis and characterization of porous polymer membranes produced by interparticle crosslinking

2000 ◽  
Vol 171 (2) ◽  
pp. 285-291 ◽  
Author(s):  
Ulrich Mähr ◽  
Herry Purnama ◽  
Ellen Kempin ◽  
Reinhard Schomäcker ◽  
Karl-Heinz Reichert
Keyword(s):  
Polymer Membranes ◽  
Porous Polymer ◽  
Synthesis And Characterization

scholarly journals Radiolytic synthesis and characterization of PVA and chitosan based conductive polymer membranes for alkaline fuel cells

Tehnika ◽  
2014 ◽  
Vol 69 (2) ◽  
pp. 190-195
Author(s):  
Ivan D. Stoševski ◽  
Jelena I. Krstić ◽  
Nikola Č. Vokić ◽  
Zorica M. Kačarević-Popović ◽  
Šćepan S. Miljanić
Keyword(s):  
Fuel Cells ◽  
Conductive Polymer ◽  
Polymer Membranes ◽  
Synthesis And Characterization ◽  
Alkaline Fuel Cells ◽  
Radiolytic Synthesis

Effect of porosity and surface chemistry on the characterization of synthetic polymers by HPLC using porous polymer monolithic columns

2002 ◽  
Vol 25 (14) ◽  
pp. 909-916 ◽  
Author(s):  
Miroslav Janc?? ◽  
Shaofeng Xie ◽  
Dominic S. Peterson ◽  
Robert W. Allington ◽  
Frantisek Svec ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Synthetic Polymers ◽  
Porous Polymer ◽  
Monolithic Columns

scholarly journals Porous Polymer Membranes via Selectively Wetted Surfaces

Langmuir ◽  
2012 ◽  
Vol 28 (13) ◽  
pp. 5622-5632 ◽  
Author(s):  
Annemarie Magerl ◽  
Werner A. Goedel
Keyword(s):  
Polymer Membranes ◽  
Porous Polymer
Sign in / Sign up

Export Citation Format

Share Document