光交联法合成新型温敏性水凝胶的研究

合成了丙烯酸 β 羟基丙酯(β HPAT) N 肉桂酰氧甲基丙烯酰胺(CMMAM)共聚物,采用光交联法制备了温敏性共聚水凝胶。实验结果表明:共聚物交联程度随光照时间延长而增大;在一定温度范围内,水凝胶的溶胀率(SR)随温度升高而减小,表现出显著的温敏行为。

光交联法合成N-肉桂酰氧甲基丙烯酰胺/丙烯酰胺水凝胶的研究

合成了N -肉桂酰氧甲基丙烯酰胺 (CMMAM )与丙烯酰胺 (AM )的共聚物 (CMMAM AM ) ,通过光交联法制备了水凝胶 .测定了水凝胶的DSC ,并对水凝胶的溶胀性能进行了初步研究 .热分析实验表明 :随共聚物中CMMAM含量的增加 ,水凝胶的Tg值下降 .

光交联法合成水凝胶的研究

合成了一种新型光敏性功能单体N -肉桂酰氧甲基丙烯酰胺 (CMMAM)及其与丙烯酸 (AA)的共聚物(CMMAM -AA) ,通过光交联法进一步合成水凝胶 .测定了CMMAM和CMMAM -AA聚合物的红外光谱 。

中国科技大学与铁路企业联合开发 我国首创光交联绝缘电缆新技术

9月25日,我国自主研制、拥有自主知识产权的紫外光辐照交联聚乙烯绝缘电缆新技术,通过了中国科学院、铁道部联合组织的鉴定,紫外光交联绝缘电力和控制电缆新产品同时在河南焦作批量生产,这为我国交联电线电缆行业的技术改造和产品升级换代开辟了新途径。 这项由中国科技大学和铁路企业联合开发的新技术,已经获得两项专利授权,检索查新表明。

Synthesis and Characterization of a New Bifunctional Dye Containing Spirobenzopyran and Cinnamoyl Moiety

A novel bifunctional dye containing spirobenzopyran and cinnamoyl moiety has been prepared and its photochromic behavior following irradiation at different wavelengths of monochrome UV light was investigated. The colourless bifunctional dye in film or solution exhibits unusual photochromism through structural and geometrical transformation from spirobenzopyran to merocyanine accompanying with photocrosslinking reaction in cinnamoyl moieties. Two kinds of photochemical reaction were achieved by irradiation at the different wavelengths of monochrome UV light (275 nm, 365 nm) selectively. The photochromic process of the bifunctional dye was discussed and the dynamic behaviors of the decolorization process were investigated.