Polymer fibers have demonstrated excellent thermal conductivity (λ) owing to the extensive orientation of the molecular chains, and the enhanced interaction of molecular chains is believed to be able to improve the λ of polymers. Herein, stereocomplex polylactide (sc-PLA) fibrous films were fabricated through a combination of improved orientation of the molecular chains by electrospinning and enhanced molecular chain interactions of enantiomeric poly(L-lactide) (PLLA) and poly(D-lactide) (PDLA). The results illustrated the thermal conduction properties of annealed sc-PLA fibrous films were much better than those of bulk PLLA samples, and were further improved compared with that of pure PLLA fibrous film with only homocrystallites. AgNWs could enter the interior of the whole annealed sc-PLA fibrous film by a facile dip-coating process, and the bridging of AgNWs with sc-PLA fibers further prompted the formation of a thermally conductive network. The resulted sc-PLA/AgNWs fibrous films showed a high λ of 5.95 W/(m⋅K) with only 0.58 vol% of AgNWs, which was 2.5 times that of pure annealed sc-PLA fibrous film. The highly thermally conductive sc-PLA/AgNWs fibrous film was highly potential to be used as thermal management materials.

聚合物纤维由于分子链的广泛取向而表现出优异的导热性（λ），并且据信分子链的增强的相互作用能够改善聚合物的λ。本文中，通过电纺丝改善分子链的取向以及对映体聚（L-丙交酯）（PLLA）和聚（D-丙交酯）（PDLA）的分子链相互作用增强，从而制备了立体复合聚丙交酯（sc-PLA）纤维膜。 ）。结果表明，退火的sc-PLA纤维膜的导热性能比散装PLLA样品的导热性能好得多，并且与仅具有均晶的纯PLLA纤维膜相比，导热性能进一步提高。AgNW可以通过简便的浸涂工艺进入整个退火的sc-PLA纤维膜的内部，AgNWs与sc-PLA纤维的桥接进一步促进了导热网络的形成。所得的sc-PLA / AgNWs纤维膜的高λ为5.95 W /（m·K），只有0.58 vol％的AgNWs，是纯退火的sc-PLA纤维膜的2.5倍。高导热性的sc-PLA / AgNWs纤维膜具有很高的潜力，可用作热管理材料。