{"title":"Raman spectroscopy investigation on amorphous polyetherketoneketone (PEKK)","authors":"Karl Delbé , France Chabert","doi":"10.1016/j.vibspec.2023.103620","DOIUrl":null,"url":null,"abstract":"<div><p>We used Raman spectroscopy to analyze amorphous polyetherketoneketone (PEKK) and identified the conditions to obtain this material’s exploitable Raman spectrum<span><span>. Our study assigns the vibrational modes observed from 100 spectra recorded on the amorphous PEKK’s surface, obtained by injection moulding. The peaks recorded on this polymer are specific to its amorphous microstructure. The vibration modes are similar to PEK and </span>PEEK<span> since they belong to the same family of materials, the polyaryletherketones. However, PEKK has a unique molecular structure with a ketone content of 67 % and an ether content of 33 %, resulting in an amplification or appearance of vibration modes associated with the ketone group’s vibrations and a decrease in the modes related to the ether group. This work provides a valuable database for those studying the microstructure of PEKK and its evolution with processing conditions and ageing.</span></span></p></div>","PeriodicalId":23656,"journal":{"name":"Vibrational Spectroscopy","volume":"129 ","pages":"Article 103620"},"PeriodicalIF":2.7000,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Vibrational Spectroscopy","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0924203123001273","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
引用次数: 0
Abstract
We used Raman spectroscopy to analyze amorphous polyetherketoneketone (PEKK) and identified the conditions to obtain this material’s exploitable Raman spectrum. Our study assigns the vibrational modes observed from 100 spectra recorded on the amorphous PEKK’s surface, obtained by injection moulding. The peaks recorded on this polymer are specific to its amorphous microstructure. The vibration modes are similar to PEK and PEEK since they belong to the same family of materials, the polyaryletherketones. However, PEKK has a unique molecular structure with a ketone content of 67 % and an ether content of 33 %, resulting in an amplification or appearance of vibration modes associated with the ketone group’s vibrations and a decrease in the modes related to the ether group. This work provides a valuable database for those studying the microstructure of PEKK and its evolution with processing conditions and ageing.
期刊介绍：
Vibrational Spectroscopy provides a vehicle for the publication of original research that focuses on vibrational spectroscopy. This covers infrared, near-infrared and Raman spectroscopies and publishes papers dealing with developments in applications, theory, techniques and instrumentation.
The topics covered by the journal include:
Sampling techniques,
Vibrational spectroscopy coupled with separation techniques,
Instrumentation (Fourier transform, conventional and laser based),
Data manipulation,
Spectra-structure correlation and group frequencies.
The application areas covered include:
Analytical chemistry,
Bio-organic and bio-inorganic chemistry,
Organic chemistry,
Inorganic chemistry,
Catalysis,
Environmental science,
Industrial chemistry,
Materials science,
Physical chemistry,
Polymer science,
Process control,
Specialized problem solving.
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