Your browser does not support JavaScript!

Home    Βιομιμητικές προσεγγίσεις στη διαχείριση πυριτίου από τα διάτομα : πλειοτροπική δράση βιοπολυμερών και συνθετικών πολυμερών  

Results - Details

Add to Basket
[Add to Basket]
Identifier 000400332
Title Βιομιμητικές προσεγγίσεις στη διαχείριση πυριτίου από τα διάτομα : πλειοτροπική δράση βιοπολυμερών και συνθετικών πολυμερών
Alternative Title Biomimetic approaches of diatoms inspirational management of silicic acid: the pleiotropic role of biopolymers and artificial polymers
Author Σπινθάκη, Αργυρώ Ε.
Thesis advisor Δημάδης, Κωνσταντίνος
Reviewer Μήλιος, Κωνσταντίνος
Βελώνια, Κέλλυ
Abstract Diatoms are an example of biomineralizing organisms that are capable of processing and metabolizing Si in the form of silica (SiO2), and thus take part in the world's “Si” cycle. They need to manage the basic aspects of silica chemistry when they form their cell wall using polymeric, amorphous silica, starting out from monosilicic acid (Si(OH)4), in neutral pH environment. This research uses artificial, biomimetic systems, getting one step closer to understanding the inspirational mechanism diatoms utilize for biosilica production. An important part of the project lies on the cationic, Silaffin-like recombinant polypeptide P5S3, which seems to affect more than one aspects of silica chemistry. We will focus on its ability to delay silica formation by stabilizing silicic acid at levels significantly above the saturation concentration (~180 ppm, ~ 2 mM), the interactions responsible for the stabilization process and the effects of anionic additives, such as (poly)acrylate (PAA) and phosphate. Some artificial polymers are also studied, giving silica stabilization process inspiring new insights.
Language Greek
Subject Diatoms
Polycondensation
Silicic acid
Stabilization
Διάτομα
Πολυμερισμός
Πυριτικό οξύ
Σταθεροποίηση
Issue date 2016-07-22
Collection   School/Department--School of Sciences and Engineering--Department of Chemistry--Post-graduate theses
  Type of Work--Post-graduate theses
Views 348

Digital Documents
No preview available

Download document
View document
Views : 50