Composition dependence of physical properties of biodegradable poly(ethylene succinate) urethane ionenes
Composition dependence of physical properties of biodegradable poly(ethylene succinate) urethane ionenes
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可生物降解的聚（琥珀酸乙烯酯）聚氨酯紫罗烯物理性质的成分依赖性
DOI：
10.1039/c4ra05484a
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发表时间：
2014-10
期刊：
影响因子：
3.9
通讯作者：
Wang Yu-Zhong
中科院分区：
文献类型：
--
作者：
Wu Fang;Huang Cai-Li;Zeng Jian-Bing;Li Shao-Long;Wang Yu-Zhong
为了获得优异的综合性能，我们以六亚乙烯二异氰酸酯为扩链剂，通过端羟基聚琥珀酸乙烯与盐酸二乙醇胺的扩链反应，合成了一系列具有不同聚氨酯离子基含量的聚琥珀酸乙烯（PES）聚氨酯离子烯（pesu）。并通过一系列表征技术系统地考察了PESUI理化性质的组分依赖性。热结晶行为研究结果表明，聚氨酯离子基的加入对PES的玻璃化转变温度、熔融温度和热稳定性有轻微影响，在不改变结晶机理的情况下显著加快了PES的结晶速度。当加入4 mol%的聚氨酯离子基团时，结晶速度最快。球晶形貌观察表明，随着聚氨酯离子基含量的增加，成核密度显著增加，球晶生长速率逐渐降低。随着聚氨酯离子基含量的增加，复合粘度和存储模量先增大后减小，当聚氨酯离子基含量为4 mol%时，复合粘度和存储模量达到最大值。力学性能随氨基甲酸乙酯离子基含量稍有变化。
To obtain an excellent comprehensive performance of poly(ethylene succinate) (PES), we have synthesized a series of poly(ethylene succinate) (PES) urethane ionenes (PESUIs) with various content of urethane ionic group by the chain extension reaction of dihydroxyl-terminated poly(ethylene succinate) and diethanolamine hydrochloride with hexamethylene diisocyanate as a chain extender, and we systematically investigated the composition dependence of the physico-chemical properties of PESUI through a series of characteristic techniques. The results of thermal and crystallization behaviors suggest that the incorporation of urethane ionic group slightly affects the glass transition temperature, melting temperature, and thermal stability, and significantly accelerates the crystallization rate of PES without changing the crystallization mechanism. The fastest crystallization rate was reached with the incorporation of 4 mol% urethane ionic groups. Spherulitic morphology observation indicates that nucleation density significantly increased, while spherulitic growth rate gradually decreased with increase in urethane ionic group content. Both complex viscosity and storage modulus initially increased and then decreased with increase in urethane ionic group content, and their maximum values were observed for the sample with 4 mol% of urethane ionic group. Mechanical properties slightly varied with urethane ionic group content.
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影响因子：
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作者：
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通讯作者：
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