Effect of Silica on the Properties of Bagasse Pith Cushioning Packaging Materials (BPCPMs)

Abstract:

New degradable cushioning packaging materials based on bagasse pith, magnesium bisulfite spent liquor and reinforcing silica were prepared by press-molding process. The effects of precipitated silica loading and the specific surface area (S_BET) on the apparent density and the static compressive strength of cushioning packaging materials were investigated. Meanwhile, the microstructure and morphology of different types of silica fillers were analyzed by scanning electron microscopy(SEM). Static compressive strength of BPCPMs was improved significantly with the addition of 0.5%(w/w) silica. However, the compressive stress of BPCPMs increased at first and then decreased with increasing loading of silica. Increasing silica dosage increased cushion efficiency of BPCPMs at higher stress levels. The compressive stress increased with increasing S_BET value, and under high strain conditions, the increase scale in compressive stress also improved.

• Periodical: Applied Mechanics and Materials (Volume 469)
• Pages: 104-111
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.469.104
• Online since: November 2013
• Authors: Yan Na Lv*, Bei Hai He, Jian Zhi Ou, Ya Li Wu
• Keywords: Bagasse Pith, Biodegradable Cushioning Material, Pulping Spent Liquor, Silica

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