Determination of Depolymerization Products in Supercritic al Methanolysis of Poly(ethylene terephthalate)polyester by Reversed Phase High Performance Liquid Chromatography
- VernacularTitle:反相高效液相色谱法分析超临界甲醇解聚聚对苯二甲酸乙二醇酯的产物
- Author:
Yong YANG
;
Changming ZHANG
;
Yuanyuan XU
;
Yongwang LI
;
Hongwei XIANG
- Publication Type:Journal Article
- From:
Chinese Journal of Analytical Chemistry
2001;29(6):676-678
- CountryChina
- Language:Chinese
-
Abstract:
qualitative and quantitative analysis of solid depolymerization products for supercritical methanolysis of ploy(ethylene terephthalate) polyester (PET) were studied by means of reversedphase high performance liquid chromatogr aphy on ZorbaxC8(4.6mm×250mm) with 70%(V/V) methanol as mobile phase. The results showed that the solid depolymerization products were mainly composed of dimethyl terephthalate (DMT), methyl(2hydroxyethyl)terephthalate (MHET), bis(hydroxyethyl)tere phthalate (BHET), dimers and oligomers, which could be separated effectively under the above chromatographic conditions. The calibration curves of DMT and BHET were linear in the range of 1.0～45 mg/L (n=8),r=0.9998～1.0000 and RSD＜2.8%. The determination limits of DMT and BHET were 4.0×10-4μg and 6.0×10-4μg respectively.
