Polycaprolactone/modified bagasse whisker nanocomposites with improved moisture-barrier and biodegradability properties
Abstract
Abstract Bagasse whiskers isolated from bleached bagasse pulp were chemically modified with n ‐octadecyl isocyanate in the presence of dibutyltin dilaurate as a catalyst. The modified cellulose whiskers were used in ratios from 2.5 to 15% with polycaprolactone (PCL) polymer to prepare nanocomposite films by a solution/casting technique. The prepared nanocomposites were characterized with regard to their biodegradability in soil and moisture‐barrier, moisture sorption, mechanical, thermal, and thermomechanical properties. The use of the modified cellulose whiskers resulted in improvements in the moisture‐barrier, biodisintegration, and tensile properties of PCL. The nanocomposites containing different modified whisker loadings had very low moisture absorption (1.88–2.49%) after 4 weeks of exposure to 75% relative humidity, but these values were slightly higher than that of neat PCL (1.79%). Modified whiskers in the PCL matrix did not noticeably affect the glass‐transition and melting temperatures of PCL. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
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Addition of NC significantly improves the mechanical performance of PCL, with measurable increases in tensile strength, Young's modulus, and elongation at break at low NC loadings typically below 5 wt.%.
“numerous studies confirm that the addition of NC significantly improves the mechanical performance of PCL. The tensile strength, Young’s modulus, and elongation at break have all shown measurable increases at low NC loadings (typically < 5 wt.%) [21,22,23,36,67]”
Solution/solvent casting facilitates better initial dispersion of NC in PCL but is limited by environmental and processing drawbacks.
“solution/solvent casting, often using chloroform or dichloromethane as solvents, facilitates better initial dispersion but is limited by environmental and processing drawbacks [20,22,23,36,67,68]”
There are three main types of nanocellulose: cellulose nanocrystals, cellulose nanofibrils, and bacterial nanocellulose, each with distinct structural and physical characteristics.
“Studies in the literature have identified three main types of NC, namely cellulose nanocrystals (CNCs), cellulose nanofibrils (CNFs), and bacterial nanocellulose (BNC), each with distinct structural and physical characteristics [21,32,36]”
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- Authors
- Hassan, M. L., Bras, J., Hassan, E. A., Fadel, S. M., & Dufresne, A.
- Affiliations
- National Research Centre (EG)
- Institut polytechnique de Grenoble (FR)
- Corresponding author
- Hassan, Mohammad L.
- Venue
- Journal of Applied Polymer Science
- Publisher
- Wiley
- Published
- 2012-02-03
- Volume
- 125
- Issue
- S2
- ISSN
- 0021-8995 (ISSN-L)
- 1097-4628
- OpenAlex
- W2064276202
- Cited by
- 43
- References
- 28
- Citations by year
- 2026: 3 · 2025: 1 · 2024: 1 · 2023: 4 · 2022: 3 · 2021: 3 · 2020: 1 · 2019: 5 · 2018: 3 · 2017: 2 · 2016: 3 · 2015: 6 · 2014: 5 · 2013: 2 · 2012: 1
- FWCI
- 3.52
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Applied Polymer Science (publishedVersion)
- HAL (submittedVersion)
- Topics
- Physical Sciences › Materials Science › Polymers and Plastics › Natural Fiber Reinforced Composites
- Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
- Physical Sciences › Materials Science › Biomaterials › Advanced Cellulose Research Studies
- Keywords
- polycaprolactone, cellulose whiskers, chemical modification, dibutyltin dilaurate, nanocomposite films, moisture barrier, water sorption, biodegradability, soil biodegradation, tensile properties, thermal properties, glass transition temperature, melting point, thermomechanical properties, biodegradable polymers
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