ǂthe ǂcase study of polysilanes
Artem Badasyan A. (Avtor), Andraž Mavrič (Avtor), Irena Kralj Cigić (Avtor), Tim Bencik (Avtor), Matjaž Valant (Avtor)

Povzetek

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.

Ključne besede

polymer nanoparticles;dynamic light scattering;size exclusion chromatography;polysilanes;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UNG - Univerza v Novi Gorici
UDK: 620.1/.2
COBISS: 5150715 Povezava se bo odprla v novem oknu
ISSN: 1744-6848
Št. ogledov: 3563
Št. prenosov: 11
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

URN: URN:SI:UNG
Vrsta dela (COBISS): Delo ni kategorizirano
Strani: str. 4735-4740
Letnik: ǂVol. ǂ14
Zvezek: ǂissue ǂ23
Čas izdaje: 2018
DOI: 10.1039/C8SM00780B
ID: 10934678