GUO Xinglin, CHEN Guangqiang, LI Fumian, ZHANG Shulin. ANALYSIS OF RAMAN SPECTRA OF WATER IN 2-HYDROXYETHYL ACRYLATES HYDROGELS CROSSLINKED BY POLYETHYLENE GLYCOL DIMETHACRYLATE[J]. Acta Polymerica Sinica, 2000,(5):659-662.
GUO Xinglin, CHEN Guangqiang, LI Fumian, ZHANG Shulin. ANALYSIS OF RAMAN SPECTRA OF WATER IN 2-HYDROXYETHYL ACRYLATES HYDROGELS CROSSLINKED BY POLYETHYLENE GLYCOL DIMETHACRYLATE[J]. Acta Polymerica Sinica, 2000,(5):659-662.DOI:
A Raman spectroscopic study on the hydrogen-bond defect of water in 2-hydroxyethyl (meth)acrylate hydrogels crosslinked by ethylene glycol dimethacrylate (EGDMA) and polyethylene glycol dimethacrylates were undertaken.It was found that PEGDMA-16 possessed a different behavior on the hydrogen-bond defect from EGDMA and PEGDMA-9.That is
the extents of hydrogen-bond defect for EGDMA and PEGDMA-9 decreased with the increase of crosslinking density
whereas for PEGDMA-16
as the crosslinking density is bigger than a certain value
the hydrogenbond defect is increased with the increase of crosslinking density.This in caused by the weaker effect of —CH2OCH2— in the PEGDMA-16 to the hydronen-bond defect of water than that of —OH in HEA and HEMA.