聚乳酸/环氧基笼型倍半硅氧烷纳米复合材料的制备与性能研究  

Investigation on the Preparation and Properties of Poly(l-lactic acid)(PLA)/Epoxy Vinyl Polyhedral Oligomeric Silsesquioxanes(EVOS) Nanocomposite

作　　者：马建莉[1] 林杉[2] 郭威男[1] 陈春银[1] 张淑娴[1] 王标兵[1,3] 

机构地区：[1]中北大学材料科学与工程学院,山西太原030051 [2]中北大学理学院,山西太原030051 [3]常州大学材料科学与工程学院,江苏常州213164

出　　处：《塑料》2012年第2期18-20,101,共4页Plastics

摘　　要：采用熔融共混法制备了聚乳酸/环氧基笼型倍半硅氧烷(PLA/EVOS)纳米复合材料,利用动态热机械分析(DMA)、热失重分析(TGA)和扫描电子显微镜(SEM)等表征和分析了材料的性能与结构。结果表明:EVOS的加入显著提高了材料的拉伸性能和储能模量,但对玻璃化转变温度和热分解温度无明显影响;当EVOS质量含量为0.5%时,纳米复合材料的断裂伸长率和储能模量达到最大值,分别为2.23%和7 352 MPa。Poly （ l-lactic acid） （ PLA ）/epoxy vinyl polyhedral oligomeric silsesquioxanes （ EVOS ） nanocomposite were prepared via melt-mixing, and the properties and structure were cheracterized by dynamic thermomechanical analysis （DMA） , thermogravimetic analysis （TGA） and scanning electron microscopy （SEM）. The results showed that the incorporation of EVOS improved significantly the tensile properties and storage modulus, but had no obvious effect on the glass transition temperature and thermal decomposition temperature. In the case of 0.5 % loading level of EVOS, the highest elongation at break and storage modulus were achevied and the corresponding values were 2.23 % and 7 352 MPa,respectively.

关 键 词：聚乳酸 环氧基笼型倍半硅氧烷 纳米复合材料 制备 性能 

分 类 号：TB332[一般工业技术—材料科学与工程]