Department of Organic Materials and Fiber Engineering, Songsil University, Seoul 156-743, Korea.
ACS Appl Mater Interfaces. 2010 Mar;2(3):658-62. doi: 10.1021/am100005x.
We demonstrate the fabrication of solvent-resistant, mechanically robust, superhydrophobic nanofibrous mats by electrospinning of poly(vinylidene fluoride) (PVDF) in the presence of inorganic silane materials. The solvent resistance and mechanical strength of nanofibrous mats were dramatically increased through the crystallization of as-spun PVDF fibers or incorporation of a tetraethyl orthosilicate (TEOS) sol into the nanofibrous matrix. The electrospun nanofibrous mats yielded a water contact angle of 156 degrees that did not vary with TEOS content. The solvent resistance and mechanical robustness of the electrospun mats were significantly enhanced through extensive cross-linking of TEOS, even after short PVDF annealing times. The interpenetrating polymer network, which embeds polymer chains in a TEOS network, allows the fabrication of robust functional nanofibers by combining semicrystalline polymers with electrospinning techniques.
我们通过在聚偏氟乙烯（PVDF）中电纺入无机硅烷材料展示了溶剂抗性、机械强度高、超疏水纳米纤维垫的制造。通过对纺丝纤维的结晶或四乙氧基硅烷（TEOS）溶胶的加入到纳米纤维基质中，纳米纤维垫的溶剂抗性和机械强度大大增加。电纺纳米纤维垫得到了 156 度的水接触角，其不随 TEOS 含量而变化。通过 TEOS 的广泛交联，即使在短时间的 PVDF 退火后，电纺纳米纤维垫的溶剂抗性和机械坚固性也得到了显著提高。互穿聚合物网络将聚合物链嵌入到 TEOS 网络中，允许通过将半结晶聚合物与电纺技术相结合来制造坚固的功能性纳米纤维。
