Synthesis, characterization, thermal and optical properties of styrene derivatives having pendant p-substituted benzylic ether groups
作者:İbrahim Erol、Levent Özcan、Sedat Yurdakal
DOI:10.1007/s10973-012-2893-2
日期:2013.10
The derivatives of styrene monomer, 4-chlorophenyl-4-vinylbenzyl ether (M1), 4-methoxyphenyl-4-vinylbenzyl ether (M2), 4-ethylphenyl-4-vinylbenzyl ether (M3) and 1-naphtylphenyl-4-vinylbenzyl ether (M4) were synthesized. The normal free radical polymerization of monomers in 1,4-dioxane were performed by using 2,2′-azobisisobutyronitrile as an initiator at 65 °C. The monomers and their homopolymers were characterized by FT-IR, NMR and elemental analyses measurements. The thermal stability of polymers was investigated by thermogravimetric and differential scanning calorimetric analysis. Thermal degradation activation energies of the polymers were calculated by the Ozawa and Kissinger methods. In addition, photo-stability tests of the polymers under near-UV irradiation were performed.
合成了苯乙烯单体的衍生物:4-氯苯基-4-乙烯基苄基醚(M1)、4-甲氧基苯基-4-乙烯基苄基醚(M2)、4-乙基苯基-4-乙烯基苄基醚(M3)和 1-萘基苯基-4-乙烯基苄基醚(M4)。以 2,2′-偶氮二异丁腈为引发剂,在 65 ℃ 下进行单体在 1,4-二氧六环中的正常自由基聚合。通过傅立叶变换红外光谱、核磁共振和元素分析测量对单体及其均聚物进行了表征。聚合物的热稳定性通过热重分析和差示扫描量热分析进行了研究。聚合物的热降解活化能是通过小泽法和基辛格法计算得出的。此外,还对聚合物在近紫外线照射下的光稳定性进行了测试。