Exploiting poly(e-caprolactone) and cellulose nanofibrils modified with latex nanoparticles for the development of biodegradable nanocomposites
authors Vilela, C; Engstrom, J; Valente, BFA; Jawerth, M; Carlmark, A; Freire, CSR
nationality International
journal POLYMER COMPOSITES
keywords ENZYMATIC DEGRADATION; BLOCK-COPOLYMER; COMPOSITES
abstract This study reports the development of nanocomposites based on poly(e-caprolactone) (PCL) and cellulose nanofibrils (CNF) modified with cationic latex nanoparticles. The physical adsorption of these water-based latexes on the surface of CNF was studied as an environment-friendly strategy to enhance the compatibility of CNF with a hydrophobic polymeric matrix. The latexes are composed of amphiphilic block copolymers based on cationic poly(N,N-dimethylaminoethyl methacrylate-co-methacrylic acid) as the hydrophilic block, and either poly(methyl methacrylate) or poly(n-butyl methacrylate) as the hydrophobic block. The simple and practical melt-mixing of PCL- and latex-modified CNF yielded white homogeneous nanocomposites with complete embedment of the nanofibrils in the thermoplastic matrix. All nanocomposites are semicrystalline materials with good mechanical properties (Young's modulus = 43.6-52.3 MPa) and thermal stability up to 335-340 degrees C. Degradation tests clearly showed that the nanocomposites slowly degrade in the presence of lipase-type enzyme. These PCL/CNF-latex nanocomposite materials show great promise as future environmentally friendly packaging materials. POLYM. COMPOS., 40:1342-1353, 2019. (c) 2018 Society of Plastics Engineers
publisher WILEY
issn 0272-8397
year published 2019
volume 40
issue 4
beginning page 1342
ending page 1353
digital object identifier (doi) 10.1002/pc.24865
web of science category Materials Science, Composites; Polymer Science
subject category Materials Science; Polymer Science
unique article identifier WOS:000463102200009
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