In this study,a simple approach for manufacturing plant fiber-based cushioning foams featuring 3D (three dimensional) back-bone network was developed,combined the synergistic effect of double physical cross-linking of polyvinyl alcohol (PVA) and cationic starch (CS) with plant fibers,through foam forming process. The effect of the pulp consistency on the cell structure and static compressive perfor-mance of plant fiber-based foam was investigated,the process conditions were optimized by designing the orthogonal experiments and range analysis,and the recyclability of plant fiber-based cushioning foam materials was characterized. The results showed that when the pulp con-sistency was 1.5％,the obtained recyclable (weight recovery efficiency was 86％) plant fiber foam cushioning materials (PFF-CM) under the conditions of SDS with mass ratio of 3.8％,CS with mass ratio of 15％,PVA with mass ratio of 12％,speed of 2500 r/min,showing uni-form porous structure,low density (0.0363 g/cm3),favorable mechanical and cushioning properties (the elastic modulus was 285.8 kPa and the minimum cushioning coefficient was 4.4).
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