Lignin‑based polyethylene films with enhanced thermal, opacity and biodegradability properties for agricultural mulch applications
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Journal of Polymers and the Environment
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Lignins are promising alternative raw materials for biocomposites due to their renewability, low cost and abundance. In this
work, the use of (softwood and hardwood) Kraft lignins in the development of LLDPE/lignin films for agricultural mulch
applications is studied. Processable blends were obtained from unmodified softwood lignin (SW) and from hardwood lignin
modified by esterification (HWE). LLDPE was pelletized with (2.5%, 5% and 10%) lignin with particle size between 38 and
75 μm and flexible films were blown extruded. Processable extrusion blends showed temperature differences lower than
20 °C between the Tg of lignin and the melting temperature of LLPDE. Films from neat LLPDE and with 2.5% of HWE and
up to 5% SW exhibited statistically comparable (≅ 349%) values of ductility. Ester groups present in lignin improve weight
loss of lignin-based blends after soil buried test.
Como referenciar
CHIAPPERO, LUCIO R.; BARTOLOMEI, SUELLEN S.; ESTENOZ, DIANA A.; MOURA, ESPERIDIANA A.B.; NICOLAU, VERONICA V. Lignin‑based polyethylene films with enhanced thermal, opacity and biodegradability properties for agricultural mulch applications. Journal of Polymers and the Environment, v. 29, p. 450-459, 2021. DOI: 10.1007/s10924-020-01886-6. Disponível em: http://200.136.52.105/handle/123456789/31774. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.