Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/143765
Title: Tailoring the mechanical and biodegradable properties of binary blends of biomedical thermoplastic elastomer
Authors: Ang, Hui Ying
Chan, Jingni
Toong, Daniel
Venkatraman, Subbu S.
Chia, Sing Joo
Huang, Ying Ying
Keywords: Engineering::Materials
Issue Date: 2018
Source: Ang, H. Y., Chan, J., Toong, D., Venkatraman, S. S., Chia, S. J., & Huang, Y. Y. (2018). Tailoring the mechanical and biodegradable properties of binary blends of biomedical thermoplastic elastomer. Journal of the Mechanical Behavior of Biomedical Materials, 79, 64-72. doi:10.1016/j.jmbbm.2017.12.013
Journal: Journal of the Mechanical Behavior of Biomedical Materials
Abstract: Blending polymers with complementary properties capitalizes on the inherent advantages of both components, making it possible to tailor the behaviour of the resultant material. A polymer blend consisting of an elastomer and thermoplastic can help to improve the mechanical integrity of the system without compromising on its processibility. A series of blends of biodegradable Poly(L-lactide-co-ɛ-caprolactone) (PLC) and Poly-(l,l-lactide-co-glycolic acid) (PLLGA), and PLC with Poly-(d,l-lactide-co-glycolic acid) (PDLLGA) were evaluated as a potential material for a biodegradable vesicourethral connector device. Based on the Tg of the blends, PLC/PLLGA formed an immiscible mixture while PLC/PDLLGA resulted in a compatible blend. The results showed that with the blending of PLC, the failure mode of PLLGA and PDLLGA changed from brittle to ductile fracture, with an significant decreas in tensile modulus and strength. SEM images demonstrated the different blend morphologies of different compositions during degradation. Gel Permeation Chromatography (GPC) and mechanical characterization revealed the degradation behaviour of the blends in this order (fastest to slowest): PDLLGA and PLC/PDLLGA blends > PLLGA and PLC/PLLGA blends > PLC. The PLC/PLLGA (70:30) blend was recommended as a suitable for the vesicourethral connector device application, highlighting the tailoring of blends to achieve a desired mechanical performance.
URI: https://hdl.handle.net/10356/143765
ISSN: 1878-0180
DOI: 10.1016/j.jmbbm.2017.12.013
Rights: © 2018 Elsevier. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

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