The poly(styrene\| co \|maleic anhydride) )(SMA) was modified by some fluorescent organic molecules such as 2\|amino\|benzimidazol,4\|amino\|antipyrine and 4\|amino\| N \|(2,4\|dimethylphenyl)\|1,8\|naphthalimide to prepare the fluorescent polymers (SMI).The FT\|IR spectra of these polymers show a new carbonyl characteristic peak in imide ring appeared at 1722?cm -1 and no amino group characteristic peaks appeared at 3300～3500?cm -1 .That is to say the chemical modification of SMA is successful.GPC and DSC results of the polymers obtained show that although the molecular weight of these polymers decreased a little in the chemical modification process,the thermal stability of these polymers was improved.On the other hand the fluorescence of these polymers can be quenched by the acidity because of the alkalescence of the organic heteroring containing nitrogen.These novel polymers can emit strong fluorescence and kept the excellent properties of SMA too.This is a convenient method to produce the fluorescent materials.
研究了分子链中含有聚甲基丙烯酸(PMAA)链段的两亲性嵌段共聚物PS b PMAA和双亲水性嵌段共聚物PVP b PMAA,PVA b PMAA的溶液性质.结果显示,这些共聚物溶液都表现出明显的聚电解质溶液的性质,并且随着分子链中PMAA链段长度的增加,共聚物溶液的聚电解质溶液特征也随之增强,表明这些共聚物都是高分子电解质,其溶液粘度取决于其中MAA单元的比例.
