13C NMR Studies on Photoinitiated Crosslinks of LDPE Model Compounds

YUNHUA XU, BAOJUN QU, YUHENG ZHANG, BENGT RÅNBY
1996 Journal of Photopolymer Science and Technology (Fotoporima Konwakai shi)  
H-and Y-type crosslinks formed in the benzophenone-photoinitiated crosslinking of various model compounds of low-density polyethylene (LDPE) have been observed and identified for the first time by 13C NMR spectroscopy. The quantitative studies show that both H-and Y-links are formed during the photo crosslinking of dodecane and their concentrations are almost the same; the yield of H-links in the crosslinked isooctane is slightly greater than that of Y-links; in contrast, Y-links are dominant
more » ... inks are dominant for the crosslinked 1-hexene. These results further support the conclusions from the study of photo crosslinking of LDPE and give new experimental evidence for elucidating the mechanism of the photo crosslinking of LDPE.
doi:10.2494/photopolymer.9.157 fatcat:bghmuxrenraldgpxeuoxtkt3zy