Tailoring the mechanical and biodegradable properties of binary blends of biomedical thermoplastic elastomer

Ang, Hui Ying; Chan, Jingni; Toong, Daniel Wee Yee; Venkatraman, Subbu; Chia, Sing Joo; Huang, Ying

doi:10.1016/j.jmbbm.2017.12.013

Cited by 7 publications

(1 citation statement)

References 29 publications

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“…Biodegradable materials for regenerative medicine should possess befitting mechanical properties and degradation profiles to match the native tissue healing. − Two material classes have been the focus of the biodegradable materials for cardiovascular treatments: polymer and metal. In general, polymer exhibits more adjustable degradation rate, whereas metal shows better mechanical strength. − …”

Section: Introductionmentioning

confidence: 99%

Mechanism of Acceleration of Iron Corrosion by a Polylactide Coating

et al. 2018

ACS Appl. Mater. Interfaces

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Strong and biodegradable materials are key to the development of next-generation medical devices for interventional treatment. Biodegradable polymers such as polylactide (PLA) have controllable degradation profiles, but their mechanical strength is much weaker than some metallic materials such as iron; on the other hand, tuning the corrosion rate of iron to a proper time range for biomedical applications has always been a challenge. Very recently, we have achieved a complete corrosion of iron stent in vivo within the clinically required time frame by combining a PLA coating, which provides a new biomaterial type for the next-generation biodegradable coronary stents termed as a metal−polymer composite stent. The underlying mechanism of accelerating iron corrosion by a PLA coating remains an open fundamental topic. Herein, we investigated the corrosion mechanism of an iron sheet under a PLA coating in the biomimetic in vitro condition. The Pourbaix diagram (potential vs pH) was calculated to present the thermodynamic driving force of iron corrosion in the biomimetic aqueous medium. Electrochemical methods were applied to track the dynamic corrosion process and inspect various potential cues influencing iron corrosion. The present work reveals that acceleration of iron corrosion by the PLA coating arises mainly from decreasing the local pH owing to PLA hydrolysis and from alleviating the deposition of the passivation layer by the polymer coating.

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Section: Introductionmentioning

confidence: 99%

Mechanism of Acceleration of Iron Corrosion by a Polylactide Coating

et al. 2018

ACS Appl. Mater. Interfaces

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Overall Investigation of Poly (Phenylene Sulfide) from Synthesis and Process to Applications—A Review

Zuo

Tcharkhtchi

Shirinbayan

et al. 2019

Macro Materials & Eng

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Poly (phenylene sulfide) (PPS) is one kind of high‐performance polymer with high thermal stability that can be used widely in different industrial domains. However, according to an investigation of the literature, few reviews have comprehensively focused on the continuous development of PPS applications in the past decade. To meet this demand, this paper provides an overall investigation of PPS polymer and PPS‐based composites from synthesis and process to applications. Briefly, this paper introduces PPS materials according to the following topics. First, the molecular weight distribution and morphology of PPS, as well as their reinforced parts, are introduced. Afterward, the topic is focused on the synthesis, process, and blending of PPS. In the next part, this paper investigates the key points regarding PPS as a high‐performance polymer, focusing on the aspect of thermal behavior and mechanical properties. Finally, PPS composite applications are emphasized and overviewed from a wide range of aspects.

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