李磊,王立国,王岩,郑岩,代丽君
LI Lei1, WANG Li-guo2, WANG Yan1, ZHENG Yan1, DAI Li-jun3 (1. Materials Science & Engineering College

• 1:哈尔滨理工大学材料科学与工程学院
• 2:大庆石化公司腈纶厂
• 3:哈尔滨理工大学材料科学与工程学院
• 4:哈尔滨理工大学材料科学与工程学院

摘要(Abstract)：

通过高压静电纺丝技术,以异丙醇/水为混合溶剂,通过TiO2共混改性,制备了不同二氧化钛含量的聚乙烯-乙烯醇(EVOH)/二氧化钛(TiO2)非织造布,通过扫描电子显微镜、X-射线衍射(XRD)对其微观形貌、结晶性能进行了研究,并分析了相对面电阻和吸碱率与TiO2共混量的关系。结果表明:经TiO2共混改性后,纤维中有白色团状突起出现,有实心纤维和空心纤维两种形貌;XRD分析表明,随着TiO2含量的增加,EVOH/TiO2非织造布的结晶度越来越低;非织造隔膜的吸碱率最大可达到950%。
In the present study, a direct and cost-effective method for making non-woven membranes of poly(ethylene-co-vinyl alcohol)/titania(EVOH/TiO2) using as cell membrane materials was described. EVOH/TiO2 non-wovens were prepared by electrospinning with the mixture solvent of isopropanol and water. The influences on the properties of EVOH/TiO2 non-wovens were characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD). The results indicated that EVOH/TiO2 composite fibers included both solid and hollow fibers with irregular shape, and a lot of TiO2 particles were embed in the surface or interior of the EVOH/ TiO2 composite fibers. Along with the increasing of the content of TiO2, the non-wovens of EVOH/TiO2 displayed low intensity peaks corresponding to a lowly crystalline observed by XRD. After the membranes were doped by nano-particles of TiO2, the alkali liquor absorption of the membranes could reach 950 %.

关键词(KeyWords)： 静电纺丝;聚乙烯-乙烯醇;二氧化钛;非织造隔膜
electrospinning, poly ( ethylene-co-vinyl alcohol ), titania, non-woven membrane

Abstract:

Keywords:

基金项目(Foundation): 黑龙江省青年基金(QC04C08);; 黑龙江省教育厅科学技术研究(10551078)资助项目。

作者(Author): 李磊,王立国,王岩,郑岩,代丽君
LI Lei1, WANG Li-guo2, WANG Yan1, ZHENG Yan1, DAI Li-jun3 (1. Materials Science & Engineering College

参考文献(References)：

• [1]P Gibson,H Schreuder-Gibson,et al.Transport properties of porous membranes based on electro-spun nano-fibers[J].Colloids and SurfacesA:Physico-chemcial and Engineering Aspects,2001,187/188:469-481.
• [2]X Zong,K Kim,et al.Structure and process relationship of electro-spun bio-absorbable nano-fiber membranes[J].Polymer,2002,43:4403-4412.
• [3]H Yoshimoto,Y M Shin,et al.A biodegradable nanofiber scaffole by electrospinning and its potential for bone tissue engineering[J].Biomaterials,2003,(24):2077-2082.
• [4]C Y Xua,R Inaic,et al.Aligned biodegradable nanobrous structure:a potential scaffold for blood vessel engineering[J].Biomaterials,2004,25:877-886.
• [5]H J Jin,J Chen,et al.Human bone marrow stromal cell responses on electrospun silk fibroin mats[J].Biomaterials,2004,25:1039-1047.
• [6]Matsumura,K Hyon,et al.Surface modification of polyethylene-co-vinyl alcohol.Part I.Introduction of carboxyl groups and immobilization of collagen[J].Biomed Mater Res,2000,50(4):12-17.
• [7]E R Kenawy,J M Layman,et al.Electrospinning of poly(ethylene-co-vinyl alcohol)fibers[J].Biomaterials,2003,24:907-913.