| Tartalom: |
http://real.mtak.hu/18785/ |
| Archívum: |
MTA Könyvtár |
| Gyűjtemény: |
Status = Published
Type = Article
|
| Cím: |
A colourimetric method for the determination of the degree
of chemical cross-linking in aspartic acid-based polymer gels.
|
| Létrehozó: |
Gyarmati, Benjámin
Hegyesi, Nóra
Pukánszky, Béla
Szilágyi, András Ferenc
|
| Dátum: |
2015
|
| Téma: |
Q1 Science (General) / természettudomány általában
T2 Technology (General) / műszaki tudományok általában
|
| Tartalmi leírás: |
A 2,4,6-trinitrobenzenesulphonic acid (TNBS)-based assay is developed to determine the degree of chemical
cross-linking in aspartic acid-based polymer gels. The conventional colourimetric method for the quantitative determination
of amine groups is difficult to use in polymer networks; thus, an improved method is developed to analyse polymer
gels swollen in dimethyl sulfoxide (DMSO). Reaction products of the derivatizing reaction are examined by NMR. The
chemical stability of the reagent is increased in DMSO, and the method shows satisfactory linearity and accuracy. The
degree of chemical cross-linking in the investigated gels is close to its theoretical maximum, but the conversion of the pendant
amine groups to cross-linking points is strongly dependent on the feed composition of the gels.
|
| Típus: |
Article
PeerReviewed
|
| Formátum: |
text
|
| Azonosító: |
Gyarmati, Benjámin and Hegyesi, Nóra and Pukánszky, Béla and Szilágyi, András Ferenc (2015) A colourimetric method for the determination of the degree of chemical cross-linking in aspartic acid-based polymer gels. Express Polymer Letters, 9 (2). pp. 154-164. ISSN 1788-618X
|
| Kapcsolat: |
http:\www.expresspolymlett.com
|
