The rapid growth of polylactic acid (PLA) production and the slow hydrolysis rate make PLA a potential environmental pollutant. In order to make better reuse of the waste PLA in energy fields and solve the potential pollutant, PLA/wood flour (WF) compounds in all different proportions were co-pyrolyzed to study the co-pyrolysis behavior in terms of energy and products. The apparent activation energy of the 50%wtWF50%wtPLA compounds during co-pyrolysis decreased by 28% than PLA and 29.4% than WF. In addition, the pyrolysis of PLA provided additional energy for the co-pyrolysis of compounds which reduced the external input energy. The chemical reactions between WF and PLA during co-pyrolysis could be called synergistic interactions which promoted the free radical reaction of PLA and lead to the increase of lactide production. The yield of the harmful acetaldehyde reduced by 85.9% in the co-pyrolysis of 25%wtWF75%wtPLA compounds. In addition, the production of small molecular benzene ring substances was increased. For example, the phenol yield increased by 31.3% in the co-pyrolysis of 25%wtWF75%wtPLA compounds. The carbon number distribution of the main products was mainly concentrated on C5–C7 which was better for the reuse of bio-fuels during co-pyrolysis.

聚乳酸（PLA）产量的快速增长和缓慢的水解速度使PLA成为潜在的环境污染物。为了更好地利用废弃的PLA在能源领域中，并解决潜在的污染物，共热解了各种比例的PLA /木粉（WF）化合物，以研究能源和产品方面的共热解行为。共热解过程中50％wtWF50％wtPLA化合物的表观活化能比PLA降低28％，比WF降低29.4％。此外，PLA的热解为化合物的共热解提供了额外的能量，从而减少了外部输入能量。WF和PLA在共热解过程中的化学反应可以称为协同相互作用，它促进PLA的自由基反应并导致丙交酯产量的增加。在25％wtWF75％wtPLA化合物的共热解过程中，有害乙醛的产率降低了85.9％。另外，增加了小分子苯环物质的产生。例如，在25％wtWF75％wtPLA化合物的共热解中，苯酚的收率提高了31.3％。主要产品的碳数分布主要集中在C5–C7上，这更有利于共热解过程中生物燃料的再利用。