笼形氨丙基聚倍半硅氧烷/聚乳酸杂化材料的制备与性能  

Preparation and Properties Cage-like Octaaminopropyl Polyhedral Oligomeric Silsesquioxane/Polylactic Acid Hybrid Materials

作　　者：张晓静[1] 贾天刚[1] 石林[1] 

机构地区：[1]郑州轻工业学院材料与化工学院河南省表界面材料重点实验室,河南郑州450002

出　　处：《精细化工》2008年第12期1145-1148,共4页Fine Chemicals

基　　金：河南省教育厅自然科学基金(2008A430022);郑州轻工业学院博士科研基金(000310)~~

摘　　要：用溶液共混的方法,制备了不同质量分数的笼形氨丙基聚倍半硅氧烷(OAPS)与聚乳酸(PLLA)杂化材料。用傅立叶红外光谱(FTIR)、差示扫描量热法(DSC)、动态热机械分析(DMA)、热失重分析(TGA)等手段对该体系进行了考察。结果表明,OAPS质量分数为5时,PLLA的羰基伸缩振动峰由1758cm-1红移至1748cm-1,OAPS氨基伸缩振动峰由3362cm-1红移至3296cm-1,说明PLLA羰基与OAPS氨基之间形成了氢键;随着OAPS质量分数由0增至5,OAPS/PLLA杂化材料的玻璃化转变温度(Tg)由47℃升高至56℃,熔融温度(Tm)由141℃升高至146℃,储能模量由1100MPa增至1250MPa;OAPS的加入没有改变PLLA的热分解温度。A series of hybrid materials involving cage-like octaaminopropyl polyhedral oligomeric silsesquioxane and polylaetic acid （OAPS/PLLA） were prepared via solution blending method. The hybrid systems were characterized by FTIR, DSC, TGA and dynamic mechanical analysis （DMA）. The results showed that stretching vibration peak of carbonyl group of PLLA shifts from 1 758 cm^-1 to 1 748 cm^-1 ,and stretching vibration peak of amino group of OAPS also has a red shift from 3 362 cm^-1 to 3 296 cm^- 1, indicating that hydrogen bond interactions are formed between the amino groups of OAPS and the carbonyl groups of PLLA. The glass transition temperature （Tg） of OAPS/PLLA increases from 47℃ to 56 ℃ and the melting temperature（Tin） also increases from 141℃ to 146℃ when the mass fraction of OAPS increases from 0% to 5% in the hybrid system. The addition of OAPS had little influence on the thermal stability of PLLA.

关 键 词：氨丙基聚倍半硅氧烷 聚乳酸 杂化材料 功能材料 

分 类 号：TB39[一般工业技术—材料科学与工程]