李兆敏,朱姝,孙权权,咸文龙,何光彬,余木火
LI Zhao-min,ZHU Shu,SUN Quan-quan,XIAN Wen-long,HE Guang-bin,YU Mu-huo

• 1:东华大学上海市轻质结构复合材料重点实验室纤维材料改性国家重点实验室
• 2:上海微创医疗器械(集团)有限公司

摘要(Abstract)：

聚醚嵌段酰胺与蒙脱土(MMT)通过双螺杆共混及精密挤出成形制备聚醚嵌段酰胺-MMT中空纤维管,试图利用MMT的纳米尺寸效应改善材料刚性,考察了MMT含量对中空纤维力学性能与凝聚态结构的影响规律。分别采用力学性能测试、差示扫描量热法、热失重分析、动态力学分析等手段对中空纤维的拉伸性能、热性能和动态力学性能等展开研究。结果表明:当MMT质量分数为9%左右时,中空纤维管的拉伸模量和强度较高,热稳定性略微降低但影响不大,动态储能模量显著提高,刚性增加,试验结果已被应用于相关产品开发中。
In this paper, polyether block amide-montmorillonite(PEBA-MMT) hollow fiber catheters areprepared by blending of PEBA and MMT using a twin-screw and forming with a precise extrusion system,so that the rigid of materials might be improved due to nanometer size effect of MMT. The influence ofcontent of MMT on the mechanical performances and condensed state structures for hollow fibers areinvestigated. The mechanical properties are tested by differential scanning calorimetry, thermogravimetricanalysis and dynamic thermomechanical analysis to evaluate the tensile properties, thermal properties anddynamic mechanical properties of hollow fibers. The results show that when the content of MMT is about 9%, the tensile modulus and strength are relatively high. The thermal stability is slightly lower, but thedynamic storage modulus is significantly improved, indicating the rigidity is increased. These results havebeen applied in the developing relevant products.

关键词(KeyWords)： 聚醚嵌段酰胺;蒙脱土;中空纤维;介入医疗导管
polyether block amide;montmorillonite;hollow fiber;catheter for invasive medical

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金青年科学基金项目(21404023);; 中央高校基本科研业务费专项资金资助(14D228102)

作者(Author): 李兆敏,朱姝,孙权权,咸文龙,何光彬,余木火
LI Zhao-min,ZHU Shu,SUN Quan-quan,XIAN Wen-long,HE Guang-bin,YU Mu-huo

DOI: 10.16090/j.cnki.hcxw.2016.05.001

参考文献(References)：

• [1]钱火红,徐琴,邱群,等.中心静脉导管置换术的临床应用[J].中华护理杂志,2004,39(2):143-144.
• [2]Scott E Boatman,David G Burton,Michael C Hoffa,et al.Medical device including unitary continuous portion of varying durometer:US,7722795[P].2010-05-25.
• [3]阙亦云,李兆敏,朱姝,等.介入医疗器械用聚醚嵌段酰胺中空纤维的凝聚态结构与性能[J].纺织学报,2016,37(1):1-5.
• [4]阙亦云,赵改平,李兆敏,等.辐照交联中密度聚乙烯中空纤维管的结构与性能[J].合成纤维,2015,44(6):11-14.
• [5]Gaymans R J,Schwering P,Haan J L.Nylon 46-polytetramethylene oxide segmented block copolymers[J].Polymer,1989,30(6):974-977.
• [6]Jignesh P Sheth,Jiannong Xu,Garth L Wilkes.Solid state structureproperty behavior of semicrystallinepoly(ether-block-amide)PEBAw thermoplastic elastomers[J].Polymer,2003,44:743-756.
• [7]Asli Begenir,Stephen Michielsen,Behnam Pourdeyhimi.Crystallization behavior of elastomeric block copolymers:Thermoplastic polyurethane and polyether-block-amide[J].Journal of Applied Polymer Science,2009,111:1 246-1 256.
• [8]Okada A,Kawasumi M,Kurauchi T,et al.Synthesis and charac-terization of a nylon 6-clay hybrid[J].Polymeric Preprints,1987,28(2):447-448.