Renewable Poly(Lactic Acid) Lignocellulose Composites for the Enhancement of the Water Retention Capacity of Soil

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F24%3A63589140" target="_blank" >RIV/70883521:28610/24:63589140 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Renewable Poly(Lactic Acid) Lignocellulose Composites for the Enhancement of the Water Retention Capacity of Soil

Original language description

This study describes the preparation and characterization of a renewable composite material intended as a water-retention soil conditioner based on low-molecular-weight poly(lactic acid) (PLA) and residual biomass (wheat straw and wood sawdust). The swelling properties and biodegradability of the PLA-lignocellulose composite under environmental conditions were evaluated as indicators of its potential for soil application. Its mechanical and structural properties were characterized by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), Fourier-transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). Results showed that incorporating lignocellulose waste material into PLA increased the swelling ratio of the composite by up to 300%. The application of the composite of 2 wt% in soil enhanced its capacity for water retention by 10%. In addition, the cross-linked structure of the material proved to be capable of repeatedly swelling and deswelling, indicating its good reusability. Incorporating lignocellulose waste in the PLA enhanced its stability in the soil environment. After 50 days of the experiment, almost 50% of the sample had degraded in the soil. Employing widely available, low-cost materials, no pre-treatments in the raw, underutilized cellulosic materials promotes not only the use of non-toxic materials in the crops but also the circular economy in the potential use of these composites as an alternative to synthetic hydrogels in agriculture.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

20801 - Environmental biotechnology

Project

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Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů