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1.
Characterization of bitumen oils
Andraž Mavrič, Matjaž Valant, končno poročilo o rezultatih raziskav

Najdeno v: osebi
Ključne besede: izolacija, bitumen, termična analiza
Objavljeno: 14.09.2016; Ogledov: 794; Prenosov: 0
.pdf Polno besedilo (1,34 MB)

2.
Temperature induced de-agglomeration of the polysilane macromolecules
Matjaž Valant, Mattia Fanetti, Artem V. Badasyan, Andraž Mavrič, 2016, objavljeni povzetek znanstvenega prispevka na konferenci

Najdeno v: osebi
Ključne besede: polysilane, de-agglomeration, dynamic light scattering, differential scanning calorimetry
Objavljeno: 05.10.2016; Ogledov: 991; Prenosov: 0
.pdf Polno besedilo (73,71 KB)

3.
Growth mechanism and structure of electrochemically synthesized dendritic polymethylsilane molecules
Matjaž Valant, Gregor Mali, Artem V. Badasyan, Andraž Mavrič, 2017, izvirni znanstveni članek

Opis: The study of an electrochemical synthesis of polymethylsilane from trifunctional trichloro- methylsilane monomers identified a single polymerization pathway involving reduction of the monomer to silyl anions and their addition to the growing polymer. The sizes of the synthesized macromolecules, measured with dynamic light scattering, are much larger than the theoretical size estimated for an ideal dendrimer. The reason for this, found by NMR analysis, is in a large number of branching irregularities (defects) contained in the molecular structure, which can be described as a hyperbranched dendritic polymer. Theoretical estimates of sizes for an ideal dendrimer were corrected assuming a branching defect is a cavity with the volume of one monomer. Appropriateness of the theoretical and experimental models was confirmed with a good quantitative agreement between the experimental densities and the theoretically calculated values.
Najdeno v: osebi
Ključne besede: Polymethylsilane Dendritic polymer Electropolymerization
Objavljeno: 20.03.2017; Ogledov: 564; Prenosov: 0
.pdf Polno besedilo (705,04 KB)

4.
Efficient de-agglomeration of polysilane macromolecules in solution and their molecular size
Matjaž Valant, Mattia Fanetti, Artem V. Badasyan, Andraž Mavrič, 2017, objavljeni povzetek znanstvenega prispevka na konferenci

Najdeno v: osebi
Ključne besede: polysilane, solubility, de-agglomeration, dynamic light scattering
Objavljeno: 03.07.2017; Ogledov: 687; Prenosov: 0
.pdf Polno besedilo (1,81 MB)

5.
The electrochemical synthesis of dendritic polymethylsilane
Matjaž Valant, Gregor Mali, Artem V. Badasyan, Andraž Mavrič, 2017, objavljeni povzetek znanstvenega prispevka na konferenci

Najdeno v: osebi
Ključne besede: electropolymerization, polysilane, dendrimer
Objavljeno: 11.09.2017; Ogledov: 391; Prenosov: 0
.pdf Polno besedilo (152,81 KB)

6.
Polymer Nanoparticle Sizes from Dynamic Light Scattering and Size Exclusion Chromatography: The Case Study of Polysilanes.
Matjaž Valant, Tim Bencik, Irena Kralj Cigić, Andraž Mavrič, Artem V. Badasyan, 2018, izvirni znanstveni članek

Opis: Dynamic Light Scattering (DLS) and Size Exclusion Chromatography (SEC) are among the most popular methods for determining polymer sizes in solution. Taking dendritic and network polysilanes as a group of least soluble polymer substances, we critically compare and discuss the difference between nanoparticle sizes, obtained by DLS and SEC. Polymer nanoparticles are typically in poor solution conditions below the theta point and are in globular conformation therefore. Determination of particle sizes in presence of attractive interactions is not a trivial task. The only possibility to measure aggregation-free, a true molecular size of polymer nanoparticles in such regime of solution, is to operate with the dilute solution of globules (below theta point and above the miscibility line). Basing on results of our polysilane measurements, we come to a conclusion that DLS provides more reliable results than SEC for the dilute solution of globules. General implications for the size measurements of polymer nanoparticles in solutions are discussed.
Najdeno v: osebi
Ključne besede: Polymer Nanoparticle, Dynamic Light Scattering, Size Exclusion Chromatography, Polysilanes
Objavljeno: 16.05.2018; Ogledov: 76; Prenosov: 0
.pdf Polno besedilo (3,17 MB)

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