| 纳米淀粉的制备与改性 |
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| 引用本文： | 宋师伟,王才,许冬梅,张文英,潘则林,王秀芬.纳米淀粉的制备与改性[J].高分子材料科学与工程,2009(8). |
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| 作者姓名： | 宋师伟 王才 许冬梅 张文英 潘则林 王秀芬 |
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| 作者单位： | 北京化工大学材料科学与工程学院;北京分子科学国家实验室;新材料实验室;中国科学院化学研究所;北京分子科学国家实验室新材料实验室中国科学院化学研究所; |
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| 基金项目： | 国家自然科学基金面上项目(50573087) |
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| 摘 要： | 通过交联沉淀法制备了淀粉纳米粒子,并对其进行表面修饰,将苄基取代淀粉葡萄糖单元上的羟基,经FT-IR、1H-NMR、XRD及SEM等对其结构与形态进行表征,得到取代度(DS)约为0.05、且具有一定疏水性的苄基淀粉微细颗粒。纳米淀粉和苄基淀粉微细颗粒的结晶结构不同于原淀粉,结晶度明显降低。它们的形态呈球形,粒径分别为50 nm～100 nm和50 nm～500 nm。所制备的纳米淀粉及苄基淀粉微细颗粒对聚合物基体具有增强、增韧的功能,有望在橡胶等聚合物基体中应用,且苄基淀粉微细颗粒具有双亲性结构,可作为高分子表面活性剂应用。
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| 关 键 词： | 淀粉纳米粒子 交联沉淀法 苄基淀粉 制备 表征 |
Preparation and Modification of Starch Nanoparticles |
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| SONG Shi-wei,WANG Cai,XU Dong-mei,ZHANG Wen-ying,PAN Ze-lin,WANG Xiu-fen,New Materials Laboratory.Preparation and Modification of Starch Nanoparticles[J].Polymer Materials Science & Engineering,2009(8). |
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| Authors: | SONG Shi-wei WANG Cai XU Dong-mei ZHANG Wen-ying PAN Ze-lin WANG Xiu-fen New Materials Laboratory |
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| Affiliation: | SONG Shi-wei1,2,WANG Cai2,XU Dong-mei2,ZHANG Wen-ying1,PAN Ze-lin2,WANG Xiu-fen1(1.College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China,2.Beijing National Laboratory for Molecular Sciences(BNLMS),New Materials Laboratory,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China) |
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| Abstract: | Starch nanoparticles were prepared through crosslinking-precipitation method with a further modification of its surface.The hydroxyls of glucose units were substituted with benzyl groups.The structure and morphology were studied through FT-IR,1H-NMR,XRD and SEM.Hydrophobic starch fine particles with low value of DS(0.05) were finally prepared.The crystal structure of starch nanoparticles and benzyl starch fine particles was different from native starch,with a lower degree of crystallinity.The morphorlogy of... |
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| Keywords: | starch nanoparticles crosslinking-precipitation method benzyl starch preparation characterization |
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