作　　者： ; ; ; ; ; ;

机构地区： 郑州大学材料科学与工程学院

出　　处： 《高分子材料科学与工程》 2014年第8期27-30,36,共5页

摘　　要： 以6-氨基己酸(6-AC)、己二酸(AA)和乙二醇(EG)为原料,采用熔融缩聚法合成了可生物降解聚酯酰胺(PEAs),对处理提纯后的共聚物用红外光谱进行了结构表征;利用差示扫描量热法表征了共聚物的熔融过程和结晶过程,并研究了产物的吸水性和水解降解行为。结果表明,红外光谱图中共聚物中酯键吸收峰的强度随着酯含量的增加而增强;聚合物的熔点(Tm)、熔融焓(ΔHm)和结晶温度(Tc)、结晶焓(ΔHc)随着酯含量的增加而明显降低。共聚物的组成对吸水率影响不大,其降解速率随酯含量的增加而加快;共聚物在酸性溶液中降解速率最快,在碱性溶液中降解速率次之,在近于中性溶液中降解速率最慢。 A series of biodegradable polyesteramide( PEAs) were synthesized with 6-aminocaproic acid,adipic acid and ethylene glycol by melt polycondensation. The chemical structures melting process and crystallization process of purified copolymers were characterized through Fourier transform infrared spectroscopy( FT-IR) and differential scanning calorimetry( DSC),respectively. The water absorption and hydrolytic degradation behavior of copolymers were researched. The results of FT-IR spectra show that ester bond absorption peak intensity increases with the ester content increasing. With increase of ester content,melting temperature,melting enthalpy,crystallization temperature and crystallization enthalpy of copolymers decrease. Composition of copolymers has little effect on the water absorption. The degradation rate of copolymers increases with the ester content increasing. The degradation rate of copolymers is fastest in acidic solution and slowest in nearly neutral solution.

关 键 词： 聚酯酰胺 降解 熔融过程 结晶过程

领　　域： [理学] [理学]