摘要
利用半代数聚酰胺-胺(PAMAM)和有机硅烷的酰胺化反应合成端基为三甲氧基硅的树状分子前驱体(PAMAM-OS),加入链状高分子聚己内酯(PCL),通过溶胶-凝胶法合成了二者不同质量比的PAMAM-SiOx-PCL三元杂化材料。红外光谱(FT-IR)表明杂化材料体系中PCL有机高分子与PAMAM-SiOx组分间具有较强的氢键键合作用;X射线衍射(XRD)测试表明前驱体经水解缩合形成的网络结构使杂化材料中PCL链的结晶能力下降;热失重(TGA)分析结果表明杂化体系中PCL的热分解起始温度变化不大而结束温度升高。
Dendrimers poly（amidoamine-organosilicon）（PAMAM-OS） precursor with trimethoxysilanes end groups was derived from half generations polyamidoamine （PAMAM） interiors and organosilicon （OS） exteriors. Hybrid materials PAMAM-SiOx-PCL were prepared via an in situ sol-gel process of trimethoxysilane in the presence of linear poly（e-caprolactone） （PCL）. The Fourier transform infrared spectroscopy（FT-IR） indicates that the linkage between PAMAM-SiOx components and organic polymer PCL occurs strongly intermolecular hydrogen bonding interaction in the three-phase hybrid system. X-ray diffraction（XRD） verities that the crystallinity of poly（ε-caprolactone） in the hybrid materials decreases due to network structures, which are formed by hydrolytic condensation of the precursors. Thermo gravimetric analysis （TGA）results show that the onset points of thermal degradation temperature of PCL in the hybrid materials are almost invariable, but the end points are increased.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2013年第6期75-78,共4页
Materials Reports
基金
安徽省教育厅自然科学重点研究项目(KJ2012A018)
安徽大学科研训练计划项目(KYXL20110024)
