Materials Sciences and Applications, 2022, 13, 249-277 https://www.scirp.org/journal/msa ISSN Online: 2153-1188 ISSN Print: 2153-117X DOI: 10.4236/msa.2022.134014 Apr. 29, 2022 249 Materials Sciences and Applications Nanocellulose: Effect on Thermal, Structural, Molecular Mobility and Rheological Characteristics of Poly(Butylenes Adipate-Co-Butylene Terephthalate) Nanocomposites Gerson Alberto Valencia Albitres, Francisco Pereira Araujo Junior, Daniela França Silva Freitas, Danielle Mattos Mariano, Maria Ines Bruno Tavares, Luis Claudio Mendes * Universidade Federal do Rio de Janeiro, Instituto de Macromoléculas Professora Eloisa Mano, Rio de Janeiro, Brazil Abstract The concern with environmental preservation is a very current and relevant topic. Regarding polymers, the search for potentially ecofriendly matters has been the subject of scientific research. In this context, this work aimed to study the effect of adding nanocellulose (nCE) with 1, 3, and 5 wt.% on poly(butylene adipate-co-butylene terephthalate) (PBAT). Thermal, structur- al, relaxometric, and rheological assessments were carried out. Quantitative evaluation of PBAT copolymer by high field NMR revealed 56.4 and 43.6 m.% of the butylene adipate and butylene terephthalate segments, respective- ly. WAXD measurement on the deconvoluted diffraction patterns identified that nCE was a mixing of Cellulose I and Cellulose II polymorph structures. At any composition, nanocellulose interfered with the PBAT crystallisation process. Also, a series of new PBAT crystallographic planes appeared as a function of nanocellulose content. PBAT hydrogen molecular relaxation va- ried randomly with nanocellulose content and had a strong effect on the hy- drogen relaxation. PBAT cold crystallisation and melting temperatures (T cc and T m ) were almost unchangeable. Although T cc did not change during po- lymer solidification from PBAT molten state, the sample’s degree of crystal- linity varied with composition through the transcrystallization phenomenon. Nanocomposite thermal stability decreased possibly owing to the catalytic ac- tion of sulfonated amorphous cellulose chains. For the sample with 3 wt.% of nanocellulose, the highest values of complex viscosity and storage modulus were achieved. How to cite this paper: Albitres, G.A.V., Junior, F.P.A., Freitas, D.F.S., Mariano, D.M.M., Tavares, M.I.B. and Mendes, L.C. (2022) Nanocellulose: Effect on Thermal, Structural, Molecular Mobility and Rheo- logical Characteristics of Poly(Butylenes Adipate-Co-Butylene Terephthalate) Na- nocomposites. Materials Sciences and Ap- plications, 13, 249-277. https://doi.org/10.4236/msa.2022.134014 Received: March 14, 2022 Accepted: April 26, 2022 Published: April 29, 2022 Copyright © 2022 by author(s) and Scientific Research Publishing Inc. This work is licensed under the Creative Commons Attribution International License (CC BY 4.0). http://creativecommons.org/licenses/by/4.0/ Open Access
Nanocellulose: Effect on Thermal, Structural, Molecular Mobility and Rheological Characteristics of Poly(Butylenes Adipate-Co-Butylene Terephthalate) Nanocomposites
Jun 17, 2023
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Related Documents
![Properties of 3D Printable Poly(lactic …...2020/03/28 · The incorporation of polymer blends and composites can overcome these drawbacks of PLA [17–26]. Poly(butylene adipate-co-terephthalate)](https://static.cupdf.com/doc/110x72/5f5117c799b9da7b3d433e42/properties-of-3d-printable-polylactic-20200328-the-incorporation-of-polymer.jpg)
