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Open AccessArticle

Properties of Two-Variety Natural Luffa Sponge Columns as Potential Mattress Filling Materials

College of Forest and Garden, Anhui Agricultural University, Hefei 230036, China
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Materials 2018, 11(4), 541; https://doi.org/10.3390/ma11040541
Received: 1 March 2018 / Revised: 28 March 2018 / Accepted: 29 March 2018 / Published: 31 March 2018
(This article belongs to the Special Issue Mechanical Characterization of Bio-Based Materials and Structures)
Luffa sponge (LS) is a resourceful material with fibro-vascular reticulated structure and extremely high porosity, which make it a potential candidate for manufacturing light mattress. In this study, two types of LS columns, namely high-density (HD) and low-density (LD) columns, were investigated as materials for filling the mattress. The results showed that the compressive strength of HD LS columns was significantly greater than that of LD LS columns. However, the densification strains of the two types of LS column were both in the range of 0.6 to 0.7. Besides, HD LS columns separately pressed to the smooth plateau region and the initial densification region exhibited a partial recovery of instant height when they were unloaded, and then both of them showed no more than 4.2% of height recovery after being allowed to rest at a constant temperature and humidity for 24 h. In contrast, when LD LS columns were compressed to the smooth plateau region, the height recovery was less than 1.62% compared to when they were pressed to the initial densification region, and that was more than 15.62%. Similar to other plant fibers used as mattress fillers, the two types of LS columns also showed good water absorption capacity—both of them could absorb water from as much as 2.07 to 3.45 times their own weight. At the same time, the two types of LS columns also showed good water desorption. The water desorption ratio of HD and LD LS columns separately reached 76.86 and 91.44%, respectively, after being let rest at a constant temperature and humidity for 13 h. View Full-Text
Keywords: luffa sponge columns; mattress filling materials; mechanical properties; water absorption and desorption; dimensional stability luffa sponge columns; mattress filling materials; mechanical properties; water absorption and desorption; dimensional stability
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MDPI and ACS Style

Chen, Y.; Zhang, K.; Yuan, F.; Zhang, T.; Weng, B.; Wu, S.; Huang, A.; Su, N.; Guo, Y. Properties of Two-Variety Natural Luffa Sponge Columns as Potential Mattress Filling Materials. Materials 2018, 11, 541.

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