Crystallinity and Reinforcement in Poly-L-Lactic Acid Scaffold Induced by Carbon Nanotubes
Joint Authors
Peng, Shuping
Shuai, Cijun
Wang, Guoyong
Qi, Fangwei
Yang, Wenjing
Yang, Youwen
He, Chongxian
Source
Advances in Polymer Technology
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-12-12
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Poly-L-Lactic Acid (PLLA) is a bioabsorbable implant material due to its favorable biocompatibility and inherent degradability, while the insufficient mechanical strength hinders its further bone repair application.
In present work, carbon nanotubes (CNTs) were introduced into PLLA scaffolds fabricated via selective laser sintering.
It was found that the crystallinity of PLLA increased considerably since CNTs could promote the orderly stacking of its molecular chains, thereby improving the mechanical strength of PLLA scaffold.
Furthermore, the fracture surface analysis revealed that CNTs acted as a bridge across the cracks and hindered their further expansion.
Moreover, CNTs pulled out from the matrix to consume a large amount of fracture energy, which enhanced the resistance to external forces.
As a consequence, the compressive strength, Vickers hardness and tensile strength of the scaffold were enhanced by 22.7%, 58.8% and 17.6%, respectively.
Besides, the cells exhibited good attachment, spreading and proliferation on the scaffold.
This study demonstrated that PLLA/CNTs scaffold was a promising candidate as bone implant.
American Psychological Association (APA)
Wang, Guoyong& Qi, Fangwei& Yang, Wenjing& Yang, Youwen& He, Chongxian& Peng, Shuping…[et al.]. 2019. Crystallinity and Reinforcement in Poly-L-Lactic Acid Scaffold Induced by Carbon Nanotubes. Advances in Polymer Technology،Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1122147
Modern Language Association (MLA)
Wang, Guoyong…[et al.]. Crystallinity and Reinforcement in Poly-L-Lactic Acid Scaffold Induced by Carbon Nanotubes. Advances in Polymer Technology No. 2019 (2019), pp.1-10.
https://search.emarefa.net/detail/BIM-1122147
American Medical Association (AMA)
Wang, Guoyong& Qi, Fangwei& Yang, Wenjing& Yang, Youwen& He, Chongxian& Peng, Shuping…[et al.]. Crystallinity and Reinforcement in Poly-L-Lactic Acid Scaffold Induced by Carbon Nanotubes. Advances in Polymer Technology. 2019. Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1122147
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1122147