Journal
CHEMICAL ENGINEERING JOURNAL
Volume 374, Issue -, Pages 304-315Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2019.03.273
Keywords
Carrier; In situ growth; Sustained-release; Antibacterial activity; Cytocompatibility
Categories
Funding
- Natural Science Foundation of China [81871494, 51575537, 81572577, 81871498, 51705540]
- Hunan Provincial Natural Science Foundation of China [2016JJ1027, 2018JJ3671]
- Guangdong Province Higher Vocational Colleges & Schools Pearl River Scholar Funded Scheme
- Open-End Fund for the Valuable and Precision Instruments of Central South University
- Project of Hunan Provincial Science and Technology Plan [2017RS3008]
- Fundamental Research Funds for the Central Universities of Central South University [2018ZZTS145]
Ask authors/readers for more resources
An antibacterial scaffold is highly desirable to prevent bacterial infection in orthopedic treatment. In this work, silver was in situ grown in mesoporous bioactive glass (MBG) to endow a polymer scaffold with sustained antibacterial activity. In detail, MBG was firstly modified by the oxidative self-polymerization of dopamine (denoted as pMBG). Then, pMBG was used to capture silver ions into the mesoporous channel via coordination reaction and further in situ reduce silver ions to metallic silver by the redox reaction of the catechol groups. Finally, the Ag loaded pMBG (Ag@pMBG) was introduced into polymer matrices to construct composite scaffold by additive manufacturing technology. The antibacterial tests showed that the composite scaffold exhibited robust antibacterial activity with an inhibition ring of 24.2 mm and bacterial inhibition rate more than 99% against Escherichia coli. Moreover, ion release behavior demonstrated that the composite scaffold could continually release Ag over 28 days. Besides, the composite scaffold also showed good cytocompatibility in facilitating osteoblast adhesion and proliferation.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available