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用二茂铁甲酸对第1～4代超支化聚(胺-酯)(G1-HAPE～G4-HPAE)进行端基改性,合成第1～4代二茂铁基超支化聚(胺-酯)(G1-HPAE-Fc～G4-HPAE-Fc).通过紫外-可见分光光度计(UV-Vis)、热重(TG)、微分热重法(DTG)、差示量热扫描法(DSC)、红外光谱(FT-IR)和元素分析对HPAE-Fc的接枝率、热分解行为和热分解产物的结构进行研究.结果表明:HPAE-Fc比HPAE具有更好的热稳定性,二茂铁基团的引入能显著提高热稳定性.G3-HPAE-Fc的热分解行为分为3个热失重阶段,190℃时开始分解,温度上升到240和360℃,重量损失率分别上升到19%和58.5%,500～600℃时开始停止失重,最终重量损失率为75.8%,剩余物为碳和铁元素.热分解机理较复杂,其过程可能伴随着一些连续反应的发生,包括酯基等弱键的断裂、中间产物的形成和二茂铁基团的热分解等.
The first to fourth generations of hyperbranched poly (amine-ester) (G1-HAPE ~ G4-HPAE) were modified with ferrocenecarboxylic acids to synthesize the first to fourth generation of ferrocenyl hyperbranched poly (amine- (G1-HPAE-Fc to G4-HPAE-Fc) were determined by UV-Vis, TG, DTG and DSC DSC, FT-IR and elemental analysis were used to study the grafting rate, thermal decomposition behavior and thermal decomposition products of HPAE-Fc.The results showed that HPAE-Fc had better thermal stability than HPAE, The thermal stability of G3-HPAE-Fc was divided into three thermogravimetric stages, which decomposed at 190 ℃. The temperature increased to 240 and 360 ℃ and the weight loss rate increased respectively To 19% and 58.5%, respectively, starting to lose weight at 500-600 ° C, with a final weight loss of 75.8% and carbon and iron remnants, with a more complicated thermal decomposition mechanism, which may be accompanied by some continuous reactions including Fragmentation of weak bonds such as ester groups, formation of intermediates and thermal decomposition of ferrocene groups.