Phthalic anhydride application for hydroxyl groups contents determination in polyester 24K

Prokopova L.A.
UDC
678.8
DOI
10.18577/2307-6046-2022-0-1-35-43
Article PDF (Russian) (741.87 KB)
How to cite
Prokopova L.A. Phthalic anhydride application for hydroxyl groups contents determination in polyester 24K // Proceedings of VIAM. 2022. No. 1. DOI: 10.18577/2307-6046-2022-0-1-35-43. URL: https://test.viam.ru/en/journal/2022/1/4
Keywords
polyester, hydroxyl groups contents, phthalic acid anhydride, IR-spectroscopy, expiry, raw materials control
Abstract

The possibility of replacing acetic anhydride with phthalic anhydride when determining the hydroxyl groups contents in polyester 24K is discussed. Titrimetric analysis method obtained data on the content of these functional groups, consistent with previously analyzes. The reaction completeness was controlled by infrared spectroscopy, the results of which report on the successful process flow. Additionally, the reactivity of the product with an expired shelf life was checked.

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