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Article

Chitosan as a Coupling Agent for Phosphate Glass Fibre/Polycaprolactone Composites

1
International Doctoral Innovation Centre, University of Nottingham Ningbo China, Ningbo 315100, China
2
Ningbo Nottingham New Materials Institute, University of Nottingham Ningbo China, Ningbo 315100, China
3
Composites Research Group, Healthcare Technologies, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK
4
Advanced Materials Research Group, Healthcare Technologies, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK
*
Author to whom correspondence should be addressed.
Fibers 2018, 6(4), 97; https://doi.org/10.3390/fib6040097
Received: 5 November 2018 / Revised: 28 November 2018 / Accepted: 30 November 2018 / Published: 10 December 2018
(This article belongs to the Special Issue Glass Fibers 2018)
This study shows that chitosan (CS) could be highly useful as a coupling agent in phosphate glass fibre/polycaprolactone (PGF/PCL) composites, as it improved the interfacial shear strength by up to 78%. PGFs of the composition 45P2O5–5B2O3–5Na2O–24CaO–10MgO–11Fe2O3 were dip-coated with CS (with a degree of deacetylation >80%) dissolved in acetic acid solution (2% v/v). Different CS concentrations (3–9 g L−1) and coating processes were investigated. Tensile and fragmentation tests were conducted to obtain the mechanical properties of the single fibres and interfacial properties of the PGF/PCL composites, respectively. It was observed that post-cleaning, the treated fibres had their tensile strength reduced by around 20%; however, the CS-coated fibres experienced strength increases of up to 1.1–11.5%. TGA and SEM analyses were used to confirm the presence of CS on the fibre surface. FTIR, Raman, and X-ray photoelectron spectroscopy (XPS) analyses further confirmed the presence of CS and indicated the protonation of CS amine groups. Moreover, the nitrogen spectrum of XPS demonstrated a minimum threshold of CS coating required to provide an improved interface. View Full-Text
Keywords: chitosan; coupling agent; phosphate glass fibre; polycaprolactone (PCL) composite chitosan; coupling agent; phosphate glass fibre; polycaprolactone (PCL) composite
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MDPI and ACS Style

Tan, C.; Rudd, C.; Parsons, A.; Sharmin, N.; Zhang, J.; Chen, W.; Ahmed, I. Chitosan as a Coupling Agent for Phosphate Glass Fibre/Polycaprolactone Composites. Fibers 2018, 6, 97. https://doi.org/10.3390/fib6040097

AMA Style

Tan C, Rudd C, Parsons A, Sharmin N, Zhang J, Chen W, Ahmed I. Chitosan as a Coupling Agent for Phosphate Glass Fibre/Polycaprolactone Composites. Fibers. 2018; 6(4):97. https://doi.org/10.3390/fib6040097

Chicago/Turabian Style

Tan, Chao, Chris Rudd, Andrew Parsons, Nusrat Sharmin, Junxiao Zhang, Wanru Chen, and Ifty Ahmed. 2018. "Chitosan as a Coupling Agent for Phosphate Glass Fibre/Polycaprolactone Composites" Fibers 6, no. 4: 97. https://doi.org/10.3390/fib6040097

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