Soil Biodegradation of PLA/CNW Nanocomposites Modified with Ethylene Oxide Derivatives
Due to its ester bonds, poly(lactic acid) (PLA) undergoes biodegradation in humid environments, attracting market attention. The goal of this work was to observe the biodegradation in garden soil of PLA nanocomposites with neat (PLA/CNW) and surfactant modified cellulose nanowhiskers (PLA/CNW/S). Three types of surfactants were tested: poly(ethylene glycol) monooleate (PEGMONO) and poly(ethylene glycol) with molecular weight of 300 and 1000 Da. The films were obtained by solution casting, cut in strips of (2x2) cm and buried in garden soil, monitoring the temperature and humidity. After 90, 120 and 150 days changes were observed in the films by visual inspection, polarized light microscopy, thermogravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FTIR). The results showed that the addition of surfactant favored the biodegradation of nanocomposites and that PLA/CNW/PEG1000 showed the fastest biodegradation rate.
Main Authors: | Gois,Gelsoneide da Silva, Andrade,Michelle Félix de, Garcia,Sônia Maria Silva, Vinhas,Glória Maria, Santos,Amélia S. F., Medeiros,Eliton S., Oliveira,Juliano E., Almeida,Yêda Medeiros Bastos de |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
ABM, ABC, ABPol
2017
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000800899 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Crystallization and unusual rheological behavior in poly(ethylene oxide)-clay nanocomposites
by: Kelarakis, A., et al.
Published: (2011-05-04) -
Preparation and Properties of Biodegradable Starch-clay Nanocomposites
by: Chung, Yi-Lin, et al.
Published: (2009-08-20) -
Gamma irradiation effects on polycaprolactone/zinc oxide nanocomposite films
by: Paula,Marcos, et al.
Published: (2019) -
Nanocomposites Based on Cassava Starch and Chitosan-Modified Clay: Physico‑Mechanical Properties and Biodegradability in Simulated Compost Soil
by: Perotti,Gustavo F, et al.
Published: (2017) -
ELECTROCHEMICAL OXIDATION OF ETHYLENE AT PANI/Pt AND Ag/PANI/Pt MODIFIED ELECTRODES
by: Fernández,Lenys, et al.
Published: (2016)