摘要
以吡咯(Py)和聚ε-己内酯(PCL)为原料、氯仿为溶剂,并掺杂一定量的十二烷基硫酸钠制备电纺膜,利用三氯化铁的氧化作用原位生成聚吡咯(PPy).对所得到的PCL/PPy电纺膜用红外光谱进行表征,在扫描电镜和透射电镜下观察纤维形貌,并测定力学性能和体积电阻率.结果表明,所生成的PPy以纳米粒子形式附着在电纺纤维表面,随着Py相对于PCL的质量百分含量由0增加到20%,PCL/PPy电纺膜的纤维直径从(730±341)nm逐渐下降至(325±84)nm;膜的拉伸模量和拉伸强度由不含Py的(25.7±0.8)MPa和(2.48±0.14)MPa分别增加至含有20%Py的(48.4±7.6)MPa和(5.05±0.59)MPa,断裂伸长率由(129±27)%下降至(86.2±9.1)%;体积电阻率降低了2～3个数量级.该PCL/PPy电纺纤维膜以期可作为电活性材料用于功能或生物医用领域.
Electrospun poly（ε-caprolactone）（PCL）/polypyrrole（PPy） membranes were prepared by in situ polymerization of pyrrole（Py） via oxidization with ferric chloride from PCL/chloroform solutions containing Py.Sodium dodecyl sulfate was also added in the electrospinning solution for doping PPy.The composition of the obtained PCL/PPy membranes was verified by Fourier transform infrared spectroscopy,and the fiber morphology was observed under a scanning electron microscope and a transmission electron microscope.Tensile mechanical properties and the volume resistivity of the PCL/PPy membranes were also tested.Results exhibited that the prepared PPy nanoparticles were attached on the electrospun fiber surface.The fiber diameter decreased gradually from（730 ± 341） nm to（325 ± 84） nm and showed narrower distribution with increasing the Py amount（mass percentage with respect to PCL） from 0 to 20%.The tensile modulus and tensile strength gave rise to an increase tendency,and their values increased from（25.7 ± 0.8） MPa and（2.48 ± 0.14） MPa of the PCL membrane to（48.4 ± 7.6） MPa and（5.05 ± 0.59） MPa of the PCL/PPy membrane with 20% Py,respectively.The elongation at break declined from（129 ± 27）% to（86.2 ± 9.1）% and the volume resistivity reduced by 2 ～ 3 orders.The electrospun PCL/PPy fibrous membranes would be possibly applied as electroactive materials in biomedical or functional area.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2010年第9期1094-1099,共6页
Acta Polymerica Sinica
关键词
聚吡咯
聚Ε-己内酯
电纺膜
导电性
Polypyrrole
Poly（ε-caprolactone）
Electrospun memberane
Electrical conductivity
