Computer-aided wet-spinning (CAWS) has emerged in the past few years as a hybrid fabrication technique coupling the advantages of additive manufacturing in controlling the external shape and macroporous structure of biomedical polymeric scaffold with those of wet-spinning in endowing the polymeric matrix with a spread microporosity. This book chapter is aimed at providing a detailed description of the experimental methods developed to fabricate by CAWS polymeric scaffolds with a predefined external shape and size as well as a controlled internal porous structure. The protocol for the preparation of poly(ε-caprolactone)-based scaffolds with a predefined pore size and geometry will be reported in detail as a reference example that can be followed and simply adapted to fabricate other kinds of scaffold, with a different porous structure or based on different biodegradable polymers, by applying the processing parameters reported in relevant tables included in the text.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1007/978-1-0716-0611-7_8 | DOI Listing |
Int J Biol Macromol
December 2024
Department of Chemistry and Industrial Chemistry, University of Pisa, UdR INSTM-Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy. Electronic address:
Polyhydroxyalkanoates (PHAs) are microbially produced aliphatic polyesters investigated for tissue engineering thanks to their biocompatibility, processability, and suitable mechanical properties. Taking advantage of these properties, the present study investigates the development by 3D printing of bacterial poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) scaffolds loaded with β-tricalcium phosphate (β-TCP) for bone tissue regeneration. PHBV blending with poly(lactide-co-glycolide) (PLGA) (30 wt%) was exploited to enhance material processability via an optimized computer-aided wet-spinning approach.
View Article and Find Full Text PDFCarbohydr Polym
December 2024
BIOLab Research Group, Department of Chemistry and Industrial Chemistry, University of Pisa, UdR INSTM Pisa, Via Moruzzi 13, 56124 Pisa, Italy. Electronic address:
Chitosan chemical functionalization is a powerful tool to provide novel materials for additive manufacturing strategies. The main aim of this study was the employment of computer-aided wet spinning (CAWS) for the first time to design and fabricate carboxymethyl chitosan (CMCS) scaffolds. For this purpose, the synthesis of a chitosan derivative with a high degree of O-substitution (1.
View Article and Find Full Text PDFMacromol Biosci
June 2024
BIOLab Research Group, Department of Chemistry and Industrial Chemistry, University of Pisa, UdR INSTM Pisa, Via Moruzzi 13, Pisa, 56124, Italy.
Carbohydr Polym
April 2024
Department of Chemistry and Industrial Chemistry, University of Pisa, Via Moruzzi 13, 56124 Pisa, Italy. Electronic address:
Additive manufacturing (AM) holds great potential for processing natural polymer hydrogels into 3D scaffolds exploitable for tissue engineering and in vitro tissue modelling. The aim of this research activity was to assess the suitability of computer-aided wet-spinning (CAWS) for AM of hyaluronic acid (HA)/chitosan (Cs) polyelectrolyte complex (PEC) hydrogels. A post-printing treatment based on HA chemical cross-linking via transesterification with poly(methyl vinyl ether-alt-maleic acid) (PMVEMA) was investigated to enhance the structural stability of the developed scaffolds in physiological conditions.
View Article and Find Full Text PDFBiomater Adv
March 2022
Department of Polymer Science and Technology, Hacettepe University, Ankara 06800, Turkey; Department of Basic Pharmaceutical Sciences, Hacettepe University, Ankara 06100, Turkey. Electronic address:
Volumetric muscle loss (VML) due to trauma and tumor removal operations affects millions of people every year. Although skeletal muscle has a natural repair mechanism, it cannot provide self-healing above a critical level of VML. In this study, nanocomposite aligned fiber scaffolds as support materials were developed for volumetric skeletal muscle regeneration.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!