Molecular mass determination of polyamic acid ionic salt by size-exclusion chromatography.
A methodology was developed for the determination of molecular weight aveages of polyamic acid ionic salt (PAS) by size-exclusion chromatography (SEC). Polystyrene standards were used for calibration and THF-DMF 1:1 by volume containing 0.06 M LiBr and 0.06 M H3PO4 was used as the mobile phase. The proposed methodology was found to be reproducible.
Krishnan
P Santhana Gopala
PS
Group: Advanced Polymers and Chemicals Cluster, Institute of Materials Research and Engineering, 3 Research Link, Singapore 117 602 Singapore.
Veeramani
S
S
Vora
Rohit H
RH
Chung
Tai-Shung
TS
Uchimura
Shun-Ichiro
S
Sugitani
Hatsuo
H
D002138:Calibration; D002850:Chromatography, Gel / Q000379:methods*; D007477:Ions; D008970:Molecular Weight; D009757:Nylons / Q000737:chemistry*; D012015:Reference Standards; D012492:Salts / Q000737:chemistry*
D007477:Ions; D009757:Nylons; D012492:Salts