Preparation technology of degradable seedling pots made from Citrus Dregs/PLA

doi:10.14088/j.cnki.issn0439-8114.2019.06.028

Abstract

Abstract: Citrus dregs/polylactic acid biodegradable seedling pots were prepared by hot press molding technology with Citrus dregs as reinforced materials and polylactic acid as adhesive. The preparation parameters of citrus dregs/polylactic acid biodegradable seedling pots were optimized by response surface method on the basis of single-factor investigation. The effects of particle size of Citrus dregs, molding temperature, pressure and forming time on the compressive strength of seedling pots were investigated. Under the conditions of particle size of Citrus dregs for 20 mesh number, molding temperature is 118 ℃ of a lower die and 133 ℃ of an upper die, molding pressure of 2 MPa, forming time 47 s, the compressive strength of seedling pots reached the optimal value of 5.539 MPa. The seedling pot made of PLA and Citrus dregs, which can avoid the phenomenon of the environmental pollution caused by the waste Citrus dregs and provide theoretical basis for the resource utilization of agricultural wastes.

Key words: Citrus dregs, compression molding, process, biodegradable material, response surface method（RSM）

CLC Number:

S221

XIAO Yuan, FU Fu-hua, LIANG Zeng En-ni, PAN Lang, SU Jin, YANG Ying. Preparation technology of degradable seedling pots made from Citrus Dregs/PLA[J]. HUBEI AGRICULTURAL SCIENCES, 2019, 58(6): 121-127.

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