Articles by Zuoxin Zhou in JoVE
Inkjet-printed Polyvinyl Alcohol Multilayers Iulia Salaoru1,2, Zuoxin Zhou2, Peter Morris3, Gregory J. Gibbons2 1Emerging Technologies Research Centre (EMTERC), De Montfort University, 2WMG, University of Warwick, 3PVOH Polymer Ltd. An inkjet printer was used to manufacture polyvinyl alcohol multilayers. Polyvinyl alcohol water-based ink was formulated, and the main physical properties were investigated.
Other articles by Zuoxin Zhou on PubMed
Printability of Calcium Phosphate: Calcium Sulfate Powders for the Application of Tissue Engineered Bone Scaffolds Using the 3D Printing Technique Materials Science & Engineering. C, Materials for Biological Applications. May, 2014 | Pubmed ID: 24656346 In this study, calcium phosphate (CaP) powders were blended with a three-dimensional printing (3DP) calcium sulfate (CaSO4)-based powder and the resulting composite powders were printed with a water-based binder using the 3DP technology. Application of a water-based binder ensured the manufacture of CaP:CaSO4 constructs on a reliable and repeatable basis, without long term damage of the printhead. Printability of CaP:CaSO4 powders was quantitatively assessed by investigating the key 3DP process parameters, i.e. in-process powder bed packing, drop penetration behavior and the quality of printed solid constructs. Effects of particle size, CaP:CaSO4 ratio and CaP powder type on the 3DP process were considered. The drop penetration technique was used to reliably identify powder formulations that could be potentially used for the application of tissue engineered bone scaffolds using the 3DP technique. Significant improvements (p
Effects of Poly (ε-caprolactone) Coating on the Properties of Three-dimensional Printed Porous Structures Journal of the Mechanical Behavior of Biomedical Materials. Jun, 2017 | Pubmed ID: 27233445 Powder-based inkjet three-dimensional printing (3DP) to fabricate pre-designed 3D structures has drawn increasing attention. However there are intrinsic limitations associated with 3DP technology due to the weak bonding within the printed structure, which significantly compromises its mechanical integrity. In this study, calcium sulphate ceramic structures demonstrating a porous architecture were manufactured using 3DP technology and subsequently post-processed with a poly (ε-caprolactone) (PCL) coating. PCL concentration, immersion time, and number of coating layers were the principal parameters investigated and improvement in compressive properties was the measure of success. Interparticle spacing within the 3DP structures were successfully filled with PCL material. Consequently the compressive properties, wettability, morphology, and in vitro resorption behaviour of 3DP components were significantly augmented. The average compressive strength, Young׳s modulus, and toughness increased 217%, 250%, and 315%, following PCL coating. Addition of a PCL surface coating provided long-term structural support to the host ceramic material, extending the resorption period from less than 7 days to a minimum of 56 days. This study has demonstrated that application of a PCL coating onto a ceramic 3DP structure was a highly effective approach to addressing some of the limitations of 3DP manufacturing and allows this advanced technology to be potentially used in a wider range of applications.