由对苯二甲酰胺二醇合成聚酯酰胺及其扩链反应的研究  

SYNTHESIS OF POLYESTERAMIDES FROM N,N′-BIS(2-HYDROXYETHYL)-TEREPHTHALAMIDE AND CHAIN EXTENSION REACTION

作　　者：黄超群[1] 徐少轶[1] 赵京波[1] 江盛玲[1] 杨万泰[1] 

机构地区：[1]北京化工大学化工资源有效利用国家重点实验室材料科学与工程学院,北京100029

出　　处：《高分子学报》2010年第2期237-244,共8页Acta Polymerica Sinica

基　　金：国家自然科学基金项目(基金号50873013);教育部创新团队项目(项目号IRT0706);北京市教委高分子化学与物理重点学科共建项目(项目号XK100100540;XK100100640)资助

摘　　要：以N,N′-二(2-羟乙基)对苯二甲酰胺与己二酸及丁二醇缩聚,合成了同时带有端羧基与端羟基的聚酯酰胺预聚体,研究了不同扩链剂的扩链反应,获得了特性黏度达1.05 dL/g的聚酯酰胺.对预聚体及扩链后聚合物进行了红外与核磁表征,研究了聚合物的结构,并对聚合物进行了DSC与TG分析.Polyesteramide（PEA（x/y）） prepolymers with intrinsic viscosity from 0.24 dL/g to 0.52 dL/g were synthesized through melt condensation polymerization from adipic acid,butanediol and N,N′-bis（2-hydroxyethyl）terephthalamide（HETA） at different butanediol（x） to HETA（y） molar ratios.Chain extension reaction was performed with（2,2′-（1,4-phenylene）-bis（2-oxazoline））（PBOX） or adipoyl biscaprolactamate（ABC） alone,or with combined PBOX ＋ABC chain extenders.High molecular weight PEA with intrinsic viscosity of 1.05 and 0.73 dL/g was obtained when PEA（90/10） and PEA（80/20） prepolymers were chain extended.The PEA prepolymers and the chain extended PEA were characterized by FTIR and^1H-NMR spectroscopy,differential scanning calorimetry（DSC） and thermogravimetric analysis（TGA）.^1H-NMR spectra revealed that during the preparation of PEA prepolymers,ester-amide exchange side reaction took place.DSC studies indicated that after chain extension,the Tg of PEA（80/20） increased,and its ΔHm as well as Tm decreased.PEA（0/100） is a non-crystallizable polyesteramide,and its Tg is 65℃.TGA studies showed that as the content of HETA used in the synthesis of PEA（x/y） prepolymers increased,the thermal stability of the prepolymers decreased,because the introduced terephthalic diesterdiamide showed less stability.

关 键 词：聚酯酰胺 扩链反应 缩聚 N N′-二(2-羟乙基)对苯二甲酰胺 己二酸 丁二醇 

分 类 号：O631.3[理学—高分子化学]