Abstract
Photoacoustic spectroscopy (PAS) is used to study polyene structures in degraded PVC, and the PA spectra without deviation caused by solvents can be obtained. In the PA spectra, it is shown that polyenes with conjugated number n from 4 to 9 have definite absorption peaks in the 300–500 nm region. The relationship between the position of absorption peak λ max and conjugated number n is discussed. Analyses of PA spectra combined with FTIR spectra enable an investigation of structural influences of some stabilizers. The influences on conformation interfere with the propagation of polyenes and give PVC extra thermal stability.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
