ANALYSIS OF PHOTOSTABILIZER IN HIGH-DENSITY POLYETHYLENE BY REVERSE-PHASE AND NORMAL-PHASE HPLC

Authors
CACERES A YSAMBERTT F LOPEZ J MARQUEZ N
Citation
A. Caceres et al., ANALYSIS OF PHOTOSTABILIZER IN HIGH-DENSITY POLYETHYLENE BY REVERSE-PHASE AND NORMAL-PHASE HPLC, Separation science and technology, 31(16), 1996, pp. 2287-2298
Citations number
18
Categorie Soggetti
Engineering, Chemical",Chemistry
Journal title
Separation science and technology → ACNP
ISSN journal
01496395
Volume
31
Issue
16
Year of publication
1996
Pages
2287 - 2298
Database
ISI
SICI code
0149-6395(1996)31:16<2287:AOPIHP>2.0.ZU;2-7
Abstract
Photostabilizer-type HALS were analyzed by reverse- and normal-phase l iquid chromatography (HPLC) using C-18, cyano, silica, and amino colum ns with different solvent mixtures as the mobile phase. The stabilizer s analyzed were Tinuvin 770 and Chimassorb 944. The best separation wa s attained using a NH2-column and acetonitrile/water as the mobile pha se. Also, three types of extraction procedures were performed to isola te these additives from the polymeric matrix. The most efficient extra ction method was achieved by refluxing the sample with toluene. Recove ries of 95% were found for additives using this method.