Atmospheric plasma was utilized to modify linear low-density polyethylene (LLDPE) film. On that basis, formaldehyde emission (FE)-free plywood was prepared using plasma-treated LLDPE film as the adhesive. Obtained results suggested that atmospheric plasma treatment leads to grafting of multiple oxygen-containing groups, thus evidently elevating the surficial polarity of LLDPE. Enhanced interaction between polar groups contributed to improve interfacial compatibility and interfacial adhesion between LLDPE and poplar veneer. Prepared by plasma treatment on both LLDPE and veneer, LLDPE/poplar plywood exhibited fine shear strength (around 0.87 MPa) and dynamic mechanical properties. Furthermore, the mechanical properties of plasma-treated LLDPE/poplar plywood were similar to those prepared by coupling agent treatment. It is believed that plasma treatment is a promising way to overcome the inherent hydrophobic surface of LLDPE and therefore improve the interfacial adhesion between LLDPE and wood. LLDPE/poplar plywood can be effectively manufactured using plasma treatment with reduced chemical consumption and total cost. The FE of prepared LLDPE/poplar plywood was remarkably low, indicating its suitability for indoor applications.

中文翻译：

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LLDPE膜的快速大气等离子体处理制备无甲醛胶合板

大气等离子体用于改性线性低密度聚乙烯（LLDPE）膜。在此基础上，使用经等离子体处理的LLDPE薄膜作为粘合剂，制备了无甲醛释放（FE）胶合板。所得结果表明，大气等离子体处理导致多个含氧基团的接枝，从而明显提高了LLDPE的表面极性。极性基团之间增强的相互作用有助于改善LLDPE与杨木贴面之间的界面相容性和界面粘合力。通过对LLDPE和单板进行等离子处理而制备的LLDPE /杨木胶合板具有良好的剪切强度（约0.87 MPa）和动态力学性能。此外，等离子体处理的LLDPE /杨木胶合板的机械性能与偶联剂处理的机械性能相似。认为等离子体处理是克服LLDPE固有的疏水性表面并因此改善LLDPE与木材之间的界面粘合性的有前途的方法。LLDPE /杨木胶合板可以通过等离子体处理有效地制造，从而减少化学药品的消耗和总成本。制备的LLDPE /杨木胶合板的FE值很低，表明它适用于室内应用。