TY  - JOUR
AU  - Stojanović, Željko
AU  - Jeremić, Katarina
AU  - Jovanović, Slobodan
AU  - Nierling, Wolfgang
AU  - Lechner, Manfred Dieter
PY  - 2009
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5622
AB  - Uzorci karboksimetil skroba pripremljeni su reakcijom eterifikacije u heterogenom
medijumu. Tri uzorka su pripremljena iz kukuruznog skroba a tri iz skroba iz krompira. Stepen supstitucije sintetisanih uzoraka je iznosio od 0,40 do 1,10. Uzorci su
ispitivani metodama statičkog i dinamičkog rasipanja svetlosti i viskozimetrijom razblaženih rastvora u 0,10 M rastvoru NaCl kao rastvaraču na 25 °C. Određene su
vrednosti molarnih masa, MW, poluprečnika rotacije, Rg, hidrodinamičkog poluprečnika, Rh, i graničnog viskozitetnog broja, [η]. Utvrđeno je da su uzorci bez obzira na
tip skroba i stepen supstitucije međusobno slični. Fraktalne dimenzije, df, iznose 2,380
(Rg – MW) i 2,406 (Rη – MW), dok parametar ρ iznosi 1,195. Vrednost fraktalne dimenzije i parametra ρ karakteristične su vrednosti za ponašanje razgranatih klastera u
termodinamički dobrim rastvaračima.
AB  - Carboxymethyl starch samples were prepared by etherification in heterogeneous media. Three samples were prepared from corn starch and three samples from potato starch. Degree of substitution of prepared samples ranged from 0.40 to 1.10. The samples were investigated by static and dynamic light scattering and viscosity of diluted solution in 0.10 M NaCl as solvent at 25 °C. The values of molar mass, MW, radius of gyration, Rg, hydrodynamic radius, Rh, and limited viscosity number, [η] were determined. It was found that the samples are similar to each other regardless of the type of starch and the degree of substitution. Fractal dimension, d f, was equal to 2.380 (Rg - MW) and 2.406 (Rη - MW), while parameter ρ was 1.195. The values of fractal dimension and parameter ρ are characteristic values for the behavior of branched clusters in thermodynamically good solvents.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Oblik i veličina makromolekula karboksimetil skroba u razblaženim rastvorima
T1  - The shape and size of macromolecules of carboxymethyl starch in diluted solutions
EP  - 602
IS  - 6
SP  - 593
VL  - 63
DO  - 10.2298/HEMIND0906593S
ER  - 

@article{
author = "Stojanović, Željko and Jeremić, Katarina and Jovanović, Slobodan and Nierling, Wolfgang and Lechner, Manfred Dieter",
year = "2009",
abstract = "Uzorci karboksimetil skroba pripremljeni su reakcijom eterifikacije u heterogenom
medijumu. Tri uzorka su pripremljena iz kukuruznog skroba a tri iz skroba iz krompira. Stepen supstitucije sintetisanih uzoraka je iznosio od 0,40 do 1,10. Uzorci su
ispitivani metodama statičkog i dinamičkog rasipanja svetlosti i viskozimetrijom razblaženih rastvora u 0,10 M rastvoru NaCl kao rastvaraču na 25 °C. Određene su
vrednosti molarnih masa, MW, poluprečnika rotacije, Rg, hidrodinamičkog poluprečnika, Rh, i graničnog viskozitetnog broja, [η]. Utvrđeno je da su uzorci bez obzira na
tip skroba i stepen supstitucije međusobno slični. Fraktalne dimenzije, df, iznose 2,380
(Rg – MW) i 2,406 (Rη – MW), dok parametar ρ iznosi 1,195. Vrednost fraktalne dimenzije i parametra ρ karakteristične su vrednosti za ponašanje razgranatih klastera u
termodinamički dobrim rastvaračima., Carboxymethyl starch samples were prepared by etherification in heterogeneous media. Three samples were prepared from corn starch and three samples from potato starch. Degree of substitution of prepared samples ranged from 0.40 to 1.10. The samples were investigated by static and dynamic light scattering and viscosity of diluted solution in 0.10 M NaCl as solvent at 25 °C. The values of molar mass, MW, radius of gyration, Rg, hydrodynamic radius, Rh, and limited viscosity number, [η] were determined. It was found that the samples are similar to each other regardless of the type of starch and the degree of substitution. Fractal dimension, d f, was equal to 2.380 (Rg - MW) and 2.406 (Rη - MW), while parameter ρ was 1.195. The values of fractal dimension and parameter ρ are characteristic values for the behavior of branched clusters in thermodynamically good solvents.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Oblik i veličina makromolekula karboksimetil skroba u razblaženim rastvorima, The shape and size of macromolecules of carboxymethyl starch in diluted solutions",
pages = "602-593",
number = "6",
volume = "63",
doi = "10.2298/HEMIND0906593S"
}

Stojanović, Ž., Jeremić, K., Jovanović, S., Nierling, W.,& Lechner, M. D.. (2009). Oblik i veličina makromolekula karboksimetil skroba u razblaženim rastvorima. in Hemijska industrija
Association of Chemical Engineers of Serbia., 63(6), 593-602.
https://doi.org/10.2298/HEMIND0906593S

Stojanović Ž, Jeremić K, Jovanović S, Nierling W, Lechner MD. Oblik i veličina makromolekula karboksimetil skroba u razblaženim rastvorima. in Hemijska industrija. 2009;63(6):593-602.
doi:10.2298/HEMIND0906593S .

Stojanović, Željko, Jeremić, Katarina, Jovanović, Slobodan, Nierling, Wolfgang, Lechner, Manfred Dieter, "Oblik i veličina makromolekula karboksimetil skroba u razblaženim rastvorima" in Hemijska industrija, 63, no. 6 (2009):593-602,
https://doi.org/10.2298/HEMIND0906593S . .