二茂铁端基修饰的超支化聚（胺-酯）的合成与表征

Synthesie and Charcterrization of Ferrocene-containing Hyperbranched Poly (amine-ester)

摘要:

首先以二乙醇胺和丙烯酸甲酯为原料，通过Michael加成反应制备A2B型前驱单体N,N-二羟乙基-3-氨基丙烯酸甲酯，然后以三羟甲基丙烷为反应中心核，采用有核准一步法合成羟端基超支化聚(胺-酯) (HPAE)；最后利用二茂铁甲酸对HPAE进行端基改性，得到了二茂铁端基修饰的超支化聚(胺-酯) (HPAE-Fc)。HPAE-Fc的合成条件为催化剂用量为2.5%，反应温度为140℃，反应物投料比n(OH):n(二茂铁甲酸)为1：0.8，反应时间为4h。采用FTIR、1HNMR、UV-Vis和羟值等手段对HPAE-Fc的结构进行了表征，表明二茂铁基团成功地接枝到了HPAE分子表面,接枝率达70%。

Abstract:

Hyperbranched polymer (amine-ester) with terminal alcohol group (HPAE) was synthesized by polycondensation of N,N-diethyol-3-amine-methylpropionate(prepared by Miachael addition reaction of methyl acrylate with diethanolamine) as an A2B-type monomer with trimethylol propane as the core moiety, proceeding in one-step procedure in the melt with p-toluenesulfonic acid as catalyst. Then, it was modified by ferrocenecarboxylic acid to obtain ferrocene-containing hyperbranched poly (amine-ester). The reaction conditions were obtained: reaction time 4h at temperature 140℃,catalyst dosage 2.5% based on the mass of reaction materials, molar feed ratio n(OH):n(ferrocenecarboxylic acid)=1:0.8. The obtained polymer was characterized by means of IR, 1HNMR, it shows that the ferrocene was successfully grafted to the HPAE, and the grafting rate reached 70%.