Poly(lactic acid)-thermoplastic poly(ether)urethane composites synergistically reinforced and toughened with short carbon fibers for three-dimensional printing

2018 ◽  
Vol 135 (29) ◽  
pp. 46483 ◽  
Author(s):  
Kaiyao Qian ◽  
Xin Qian ◽  
Yulong Chen ◽  
Mi Zhou
Keyword(s):  
Lactic Acid ◽  
Carbon Fibers ◽  
Three Dimensional ◽  
Poly Lactic Acid ◽  
Three Dimensional Printing ◽  
Dimensional Printing ◽  
Short Carbon

scholarly journals Improving adhesion of three-dimensional printed objects on textile fabrics by polymer coating

2019 ◽  
Vol 14 ◽  
pp. 155892501989525 ◽  
Author(s):  
Pia Meyer ◽  
Christoph Döpke ◽  
Andrea Ehrmann
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Polymer Coating ◽  
Three Dimensional ◽  
Poly Lactic Acid ◽  
Three Dimensional Printing ◽  
Textile Fabrics ◽  
Production Technologies ◽  
Dimensional Printing ◽  
Textile Fabric

Three-dimensional printing belongs to the emerging technologies of our time. Still being relatively time-consuming and suffering from low mechanical properties, three-dimensional printing can be combined with other production technologies to overcome these problems. Three-dimensional printing on textile fabrics, for example, allows for creating large areas with sufficient lateral mechanical properties in a reasonable time on which three-dimensional printed parts give additional functionalities or laterally selective mechanical rigidity and so on. To create three-dimensional printed personalized knee joint support bandages, however, the adhesion between textile fabric and polymeric parts needs to be further increased. Here, we report on the influence of a polymer coating on different textile fabrics on the adhesion of three-dimensional printed elements from hard and soft poly(lactic acid). Surprisingly, the coating increases the adhesion significantly for the hard poly(lactic acid), while the soft poly(lactic acid) sticks better on some materials without additional coating. Maximum separation forces are measured for linen which can be attributed to the relatively long linen fibers with uneven surface, increasing the fiber–fiber friction inside the fabric and the adhesion to the polymer.

Development of three-dimensional printing filaments based on poly(lactic acid)/hydroxyapatite composites with potential for tissue engineering

2021 ◽  
pp. 002199832098856
Author(s):  
Marcela Piassi Bernardo ◽  
Bruna Cristina Rodrigues da Silva ◽  
Luiz Henrique Capparelli Mattoso
Keyword(s):  
Tissue Engineering ◽  
Lactic Acid ◽  
Fused Deposition Modeling ◽  
Three Dimensional ◽  
Poly Lactic Acid ◽  
Scanning Calorimetry ◽  
Three Dimensional Printing ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
3D Printed

Injured bone tissues can be healed with scaffolds, which could be manufactured using the fused deposition modeling (FDM) strategy. Poly(lactic acid) (PLA) is one of the most biocompatible polymers suitable for FDM, while hydroxyapatite (HA) could improve the bioactivity of scaffold due to its chemical composition. Therefore, the combination of PLA/HA can create composite filaments adequate for FDM and with high osteoconductive and osteointegration potentials. In this work, we proposed a different approache to improve the potential bioactivity of 3D printed scaffolds for bone tissue engineering by increasing the HA loading (20-30%) in the PLA composite filaments. Two routes were investigated regarding the use of solvents in the filament production. To assess the suitability of the FDM-3D printing process, and the influence of the HA content on the polymer matrix, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM) were performed. The HA phase content of the composite filaments agreed with the initial composite proportions. The wettability of the 3D printed scaffolds was also increased. It was shown a greener route for obtaining composite filaments that generate scaffolds with properties similar to those obtained by the solvent casting, with high HA content and great potential to be used as a bone graft.

A novel fast disintegrating tablet fabricated by three‐dimensional printing

2009 ◽  
Vol 00 (00) ◽  
pp. 090730035508060-7
Author(s):  
Deng-Guang Yu ◽  
Chris Branford-White ◽  
Yi-Cheng Yang ◽  
Li-Min Zhu ◽  
Edward William Welbeck ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Three Dimensional Printing ◽  
Fast Disintegrating Tablet ◽  
Dimensional Printing

Central ossifying fibroma of mandible

2020 ◽  
Vol 13 (12) ◽  
pp. e239286
Author(s):  
Kumar Nilesh ◽  
Prashant Punde ◽  
Nitin Shivajirao Patil ◽  
Amol Gautam
Keyword(s):  
Fibrous Tissue ◽  
Three Dimensional ◽  
Facial Asymmetry ◽  
Ossifying Fibroma ◽  
Mandible Reconstruction ◽  
Three Dimensional Printing ◽  
Osseous Lesion ◽  
Large Size ◽  
Dimensional Printing

Ossifying fibroma (OF) is a rare, benign, fibro-osseous lesion of the jawbone characterised by replacement of the normal bone with fibrous tissue. The fibrous tissue shows varying amount of calcified structures resembling bone and/or cementum. The central variant of OF is rare, and shows predilection for mandible among the jawbone. Although it is classified as fibro-osseous lesion, it clinically behaves as a benign tumour and can grow to large size, causing bony swelling and facial asymmetry. This paper reports a case of large central OF of mandible in a 40-year-old male patient. The lesion was treated by segmental resection of mandible. Reconstruction of the surgical defect was done using avascular fibula bone graft. Role of three-dimensional printing of jaw and its benefits in surgical planning and reconstruction are also highlighted.

scholarly journals Three-Dimensional Printing in Orthopedics: from the Basics to Surgical Applications

2021 ◽  
Author(s):  
Leandro Ejnisman ◽  
Bruno Gobbato ◽  
Andre Ferrari de França Camargo ◽  
Eduardo Zancul
Keyword(s):  
Three Dimensional ◽  
Three Dimensional Printing ◽  
Dimensional Printing
Sign in / Sign up

Export Citation Format

Share Document