Polydiolcitrate–MoS2 Composite for 3D Printing Radio-Opaque, Bioresorbable Vascular Scaffolds

Implantable polymeric biodegradable devices, such as biodegradable vascular scaffolds, cannot be fully visualized using standard X-ray-based techniques, compromising their performance due to malposition after deployment. To address this challenge, we describe a new radiopaque and photocurable liquid...

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Bibliographic Details
Published in:ACS applied materials & interfaces 2024-08, Vol.16 (34), p.45422-45432
Main Authors: Szydlowska, Beata M., Ding, Yonghui, Moore, Connor, Cai, Zizhen, Torres-Castanedo, Carlos G., Collins, Caralyn P., Jones, Evan, Hersam, Mark C., Sun, Cheng, Ameer, Guillermo A.
Format: Article
Language:English
Subjects:
Applications of Polymer, Composite, and Coating Materials
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Summary:Implantable polymeric biodegradable devices, such as biodegradable vascular scaffolds, cannot be fully visualized using standard X-ray-based techniques, compromising their performance due to malposition after deployment. To address this challenge, we describe a new radiopaque and photocurable liquid polymer–ceramic composite (mPDC–MoS2) consisting of methacrylated poly­(1,12 dodecamethylene citrate) (mPDC) and molybdenum disulfide (MoS2) nanosheets. The composite was used as an ink with microcontinuous liquid interface production (μCLIP) to fabricate bioresorbable vascular scaffolds (BVS). Prints exhibited excellent crimping and expansion mechanics without strut failures and, importantly, with X-ray visibility in air and muscle tissue. Notably, MoS2 nanosheets displayed physical degradation over time in phosphate-buffered saline solution, suggesting the potential for producing radiopaque, fully bioresorbable devices. mPDC–MoS2 is a promising bioresorbable X-ray-visible composite material suitable for 3D printing medical devices, such as vascular scaffolds, that require noninvasive X-ray-based monitoring techniques for implantation and evaluation. This innovative biomaterial composite system holds significant promise for the development of biocompatible, fluoroscopically visible medical implants, potentially enhancing patient outcomes and reducing medical complications.
ISSN:1944-8244
1944-8252
1944-8252
DOI:10.1021/acsami.4c07364