Citation: WANG Mingfang, JIA Qiangqiang, WANG Yuerong, ZHANG Hongyang, ZHANG Min, HU Ping. Determination of hydroxy terminated polybutadiene in the blends by liquid critical condition chromatography[J]. Chinese Journal of Chromatography, ;2020, 38(2): 238-243. doi: 10.3724/SP.J.1123.2019.03042 shu

Determination of hydroxy terminated polybutadiene in the blends by liquid critical condition chromatography

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Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China;
2.
Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China

Corresponding author: HU Ping, huping@ecust.edu.cn
Received Date: 30 March 2019

Fund Project: National Natural Science Foundation of China (No. 81973285).

A method based on liquid critical condition chromatography (LCCC) was established for the quantification of hydroxy-terminated polybutadiene (HTPB) in polymer blends. The critical conditions for HTPB were investigated using a C18 column as the stationary phase, and tetrahydrofuran (THF)-acetonitrile (ACN) or THF-water as the mobile phase. Irrespective of the relative molecular mass, HTPB was eluted under the critical conditions of THF-ACN (70.7:29.3, v/v) or THF-water (92:8, v/v). Under the optimal conditions, the HTPB exhibited satisfactory linearity in the range of 46.7-216.4 mg/L, with a correlation coefficient (r) of 0.997. The limit of detection reached 4.2 mg/L. The recoveries of HTPB from the prepared mixtures of HTPB and mineral oil ranged from 89.2% to 101.1%, with a relative standard derivation of less than 0.66% (n=6). This method was successfully applied to the quantitative analysis of HTPB in a commercial polyurethane adhesive, and 26.6% of HTPB was detected in the product. This LCCC method is simple, convenient, highly selective, and reliable for quality control and failure studies of formulated products.
- liquid critical condition chromatography(LCCC),
- hydroxy terminated polybutadiene(HTPB),
- adhesive,
- quantitative analysis
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沈阳化工大学材料科学与工程学院沈阳 110142