핵자기공명분광법을 이용한 하이드라자이드계 POM 포름알데히드 저감제의 함량분석

임유진; 정찬호; 이금향; 김유라; 유효연; 안상두; Yoojin Lim; Chan Ho Jeong; Keum Hyang Lee; Yura Kim; Hyo-Yeon Yu; Sangdoo Ahn

Polymer(Korea), Vol.43, No.2, 289-294, March, 2019

DOI10.7317/pk.2019.43.2.289 Export Citation

핵자기공명분광법을 이용한 하이드라자이드계 POM 포름알데히드 저감제의 함량분석

The Content Analysis of Hydrazide-Based Formaldehyde Reducing Agent for POM Using 1H NMR Spectroscopy

임유진, 정찬호¹, 이금향¹, 김유라, 유효연, 안상두^†

중앙대학교 화학과
¹현대자동차 재료분석팀

Yoojin Lim, Chan Ho Jeong¹, Keum Hyang Lee¹, Yura Kim, Hyo-Yeon Yu, and Sangdoo Ahn^†

Department of Chemistry, Chung-Ang University, Seoul 06974, Korea
¹Materials Technology & Analysis Team, Hyundai Motors Company, Hwaseong-Si 18280, Korea

E-mail:

초록

Polyoxymethylene(POM)은 포름알데히드를 단량체로 하는 고분자로, 물리적 물성이 우수하나 열적 안정성은 낮아 쉽게 분해가 일어나며 이로 인해 포름알데히드를 발생한다. POM으로부터 방출되는 포름알데히드의 배출량을 줄이기 위해 이와 반응성이 좋은 질소 화합물들이 첨가제로 사용되고 있다. 본 연구에서는 1H NMR 분광법을 이용 하여 저취(low odor) POM 공중합체에 첨가된 포름알데히드 저감제인 하이드라자이드계 화합물의 상대적 함량을 간단하게 분석하는 기법을 개발하였다. 분석 시료에 과량의 포름알데히드를 가하여 포함된 전체 하이드라자이드기를 NMR 스펙트럼에서 분석이 용이한 하이드라존으로 변환하는 방법을 적용하였고, 이러한 분석법을 통하여 95% 수준의 정확도로 하이드라자이드 첨가제의 정량분석이 가능함을 확인하였다.

Polyoxymethylene (POM) is a polymer composed of formaldehyde as a monomer and has excellent physical properties. However, it has low thermal stability and is easily decomposed, thereby generating formaldehyde. In order to reduce the emission of formaldehyde from POM, nitrogen compounds are used as a reducing agent. In this study, a simple method of analyzing the content of hydrazide compounds, a formaldehyde reducing agent, added to a low odor POM copolymer was developed using 1 H NMR spectroscopy. An excess amount of formaldehyde was added to the analytical sample to convert the entire hydrazide group to a hydrazone which is easy to analyze in 1H NMR spectrum. It was confirmed that the quantitative analysis of hydrazide additive was possible with accuracy of 95% level.

Keywords:NMR;polyoxymethylene;formaldehyde reducing agent;hydrazide;hydrazone

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