Utilization of a Biodegradable Mulch Sheet Produced from Poly(Lactic Acid)/Ecoflex®/Modified Starch in Mandarin Orange Groves

International Journal of Molecular Sciences

Yuya Tachibana¹  Takuya Maeda¹  Osamu Ito¹  Yasukatsu Maeda¹ 

[1] Industrial Technology Center of Wakayama Prefecture, 60, Ogura, Wakayama, 649-6261, Japan; E-Mails:

关键词: poly(lactic acid);    modified starch;    mulch sheet;    mandarin orange;    biodegradable materials;    biomass carbon ratio;   

DOI  :  10.3390/ijms10083599

来源: mdpi

【 摘 要 】

We have developed a mulch sheet made by inflation molding of PLA, Ecoflex^® and modified starch, which all have different biodegradabilities. A field test of use as an agricultural mulch sheet for mandarin oranges was carried out over two years. The mechanical properties of the mulch sheet were weakened with time during the field test, but the quality of the mandarin oranges increased, a result of the controlled degradation of the sheet. The most degradable modified starch degraded first, allowing control of the moisture on the soil. Accelerator mass spectroscopy was used for evaluation of the biomass carbon ratio. The biomass carbon ratio decreased by degradation of the biobased materials, PLA and modified starch in the mulch sheet.

【 授权许可】

CC BY   
© 2009 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.