以双甲基丙烯酸乙二醇酯类为交联剂的丙烯酸β-羟乙酯类水凝胶中水的拉曼光谱学研究  

ANALYSIS OF RAMAN SPECTRA OF WATER IN 2-HYDROXYETHYL ACRYLATES HYDROGELS CROSSLINKED BY POLYETHYLENE GLYCOL DIMETHACRYLATE

作　　者：郭兴林[1] 陈广强[1] 李福绵[1] 张树霖[2] 

机构地区：[1]北京大学化学学院,北京100871 [2]北京大学物理系,北京100871

出　　处：《高分子学报》2000年第5期659-662,共4页Acta Polymerica Sinica

基　　金：国家自然科学基金资助项目!(基金号 59773018和59633020)

摘　　要：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 is caused by the weaker effect of —CH 2OCH 2— in the PEGDMA 16 to the hydrogen\|bond defect of water than that of —OH in HEA and HEMA.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 is caused by the weaker effect of —CH 2OCH 2— in the PEGDMA 16 to the hydrogen\|bond defect of water than that of —OH in HEA and HEMA.

关 键 词：拉曼光谱 水凝胶 HEMA 交联剂 丙烯酸β-羟乙酯 

分 类 号：O632[理学—高分子化学]