掺铕、混合稀土的P(MMA-co-St)材料的制备与性质研究  

Preparation and properties of P(MMA-co-St)materials doped with europium or mixed rare earth

作　　者：林美娟[1] 章文贡[1] 王文[1] 

机构地区：[1]福建师范大学化学与材料学院,福建福州350007

出　　处：《分子科学学报》2003年第3期166-171,共6页Journal of Molecular Science

基　　金：福建省自然科学基金重点资助项目(E0120002)

摘　　要：　研究发现三异丙氧基稀土(铕或混合稀土)与甲基丙烯酸甲酯(MMA)/苯乙烯(St)混合后会形成凝胶体,经原位聚合后即制得掺稀土的P(MMA-co-St)改性材料.结果表明,掺铕或混合稀土的P(MMA-co-St)材料稀土含量高、透明性优良、耐热性好、贮能模量高;掺铕的改性材料呈现典型的配位敏化中心Eu3+的荧光光谱;掺混合稀土的改性材料在746.5,581,525和513nm处出现很强的Nd3+特征吸收;ESEM显示了掺稀土的P(MMA-co-St)改性材料的微观形貌有较大的变化.A gel is formed by mixing triisopropoxyl Eu of triisopropoxyl mixed rare earth with monomer mixtures of methyl methacrylate and styene. The modified P(MMA-co-St) materials doped with rare earth are prepared by in-situ polymerization. The results show that the modified P(MMA-co-St) materials doped with rare earth have good transparency and heat resistance, high storage modulus. The modified P(MMA-co-St) materials doped with Eu exhibit typical ligand-sensitized emission of Eu3+ ion. The P(MMA-co-St) materials doped with mixed rare earth emit strong characteristic absorption of Re3+ ion in 746.5,581,525 and 513 nm. ESEM reveals that the microscopic morphology of P(MMA-co-St) has been changed by doping of rare earth.

关 键 词：铕 混合稀土 P(MMA-co-St)材料 制备 性质 掺杂 高分子材料 红外光谱分析 甲基丙烯酸甲酯 三异丙氧基稀土 改性材料 

分 类 号：O631[理学—高分子化学] TB324[理学—化学]