Ujwala S. Tayade; Jyotsna S. Meshram; Amulrao U. Borse
Abstract
In this study, we have chosen chitosan as capping and stabilizing agent for silica-based hydrogel synthesis. Chitosan, a biomaterial linear polysaccharide gives the pathway to greener synthesis. The source of Silica that has been chosen is sodium silicate which is very cheap when compared to other silanating ...
Read More
In this study, we have chosen chitosan as capping and stabilizing agent for silica-based hydrogel synthesis. Chitosan, a biomaterial linear polysaccharide gives the pathway to greener synthesis. The source of Silica that has been chosen is sodium silicate which is very cheap when compared to other silanating agent. But the more important feature of these hydrogels is that they shows the similar properties in the qualitative and quantitative analysis. The applications of these nanoparticles are also like another silane reagent. The hydrogel was characterized by UV-Visible, FTIR, XRD, and SEM with EDX analysis. The prepared nanoparticle in presence of acidic medium shows the behavior of hydrogel and they swell in water because of hydrophilicity of water. The hydrogel is applicable in drug loading such as isoniazid.
Andris Berzins; Andris Morozovs; Jan Van den Bulcke; Joris Van Acker
Abstract
Research describes softwood – pine (Pinus sylvestris L.) and spruce (Picea abies [L.] Karst) and hardwood – birch(Betula pendula Roth) binding with inorganic geopolymer binder, the main focus is on the softwood and geopolymerbinding principles. Geopolymer binder is formed from calcined clay ...
Read More
Research describes softwood – pine (Pinus sylvestris L.) and spruce (Picea abies [L.] Karst) and hardwood – birch(Betula pendula Roth) binding with inorganic geopolymer binder, the main focus is on the softwood and geopolymerbinding principles. Geopolymer binder is formed from calcined clay and liquid glass. The research describesgeopolymer binder compositions with various ratios of liquid glass and clay. This research focuses on mechanicalstrength of bonded wood samples in shear test and on visualization of binder in three dimensions using X-ray computed tomography with submicron resolution. The scan results are compared with mechanical strength test results. The resultsof the research shows, that inorganic binder with spruce wood can achieve 7 MPa shear strength. The research describes binding principles that function between wood and geopolymer and explains the main reasons for destruction of joint. Copyright © 2017 VBRI Press.