Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/72153
Title: 3D printing of hydrogels for biofabrication
Authors: Li, Hongjiang
Keywords: DRNTU::Engineering::Mechanical engineering
Issue Date: 2017
Abstract: Recently, hydrogels have been utilized as important biomaterials for 3D printing of three dimensional scaffolds for tissue engineering. The key factor for 3D printing is to select a hydrogel with a good 3D printability. Therefore, study on selecting a hydrogel with a good 3D printability is necessary. However, the printability of hydrogels is seldom addressed. Furthermore, there is a lack of study on 3D printing of using two hydrogels containing different charges. Thus, the study of applying two hydrogels carrying different charges to print them alternatively is vital. In this project, based on the method of semi-quantification of printability, the 3D printability was quantified. Instead of using one hydrogel for 3D printing, two hydrogels with different charges were printed alternatively. Four hydrogels, alginate, xanthan gum, gelatin and chitosan, were prepared in various concentrations and maintained under the same environmental conditions. The concentration of each hydrogel with the best 3D printability was selected for the final 3D printing process. The results of this study showed that when using two hydrogels with positive and negative charges to print alternatively, the ionic bonding improved the stability and performance of the scaffold structure as compared to the use of a hydrogel with positive or negative charges alone. The optimal layers which could be printed with a combination of 6wt% xanthan gum and 5wt% gelatin solutions were 50.
URI: http://hdl.handle.net/10356/72153
Rights: Nanyang Technological University
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:MAE Student Reports (FYP/IA/PA/PI)

Files in This Item:
File Description SizeFormat 
Li Hongjiang FYP Report.pdf
  Restricted Access
3.92 MBAdobe PDFView/Open

Page view(s)

232
Updated on Apr 11, 2021

Download(s) 50

62
Updated on Apr 11, 2021

Google ScholarTM

Check

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.