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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Comprehensive study of cellulose nanocrystals acetylation effects on poly (butylene adipate-co-terephthalate) nanocomposite films obtained by solvent casting and heat pressin

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Author(s):
Francisco, Ana B. F. de P. [1] ; Lorevice, V, Marcos ; Claro, Pedro I. C. [2] ; Gouveia, Rubia F. [3, 2]
Total Authors: 4
Affiliation:
[1] Brazilian Ctr Res Energy & Mat CNPEM, Brazilian Nanotechnol Natl Lab LNNano, BR-13083970 Campinas, SP - Brazil
[2] Lorevice, Marcos, V, Brazilian Ctr Res Energy & Mat CNPEM, Brazilian Nanotechnol Natl Lab LNNano, BR-13083970 Campinas, SP - Brazil
[3] Fed Univ ABC, Ctr Nat & Human Sci, BR-09210580 Santo Andre, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: INDUSTRIAL CROPS AND PRODUCTS; v. 177, MAR 2022.
Web of Science Citations: 0
Abstract

Interest in biodegradable polymers has been increasing exponentially due to the global environmental concerns about inappropriate disposal of plastic materials. Considering this issue, poly (butylene adipate-co-terephthalate) (PBAT) is a good candidate to be applied to films, since it presents desirable, promising processability and thermal-mechanical properties and lower water solubility compared with other biopolymers. However, PBAT exhibits inferior mechanical properties compared with polyolefins. To overcome this, acetylated cellulose nanocrystals (CNCs-Ac) were systematically investigated by incorporating different weight ratios to PBAT-based films produced via a solvent casting/heat pressing approach. This process combines a well dispersed hydrophobic filler with additional temperature and pressing, ensuring improvement in yield strength (30%) and Young's modulus (90%), as well as an outstanding benefit in flexibility (> 650%), compared with neat PBAT film. This work provided a novel route to prepare PBAT bionanocomposites, showing greater potential for biodegradable packaging, which can be an alternative to conventional polymers. (AU)

FAPESP's process: 20/08651-4 - Morphological and physico-chemical properties nanocellulose-based porous nanocomposites: an advanced in situ investigation by 4D X-ray tomography using synchrotron beamline at Sirius
Grantee:Rubia Figueredo Gouveia
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants