Functionalized poly l-lactic acid synthesis and optimization of process parameters for 3D printing of porous scaffolds via digital light processing (DLP) method

2020 ◽  
Vol 56 ◽  
pp. 550-561 ◽  
Author(s):  
Arvin Bagheri Saed ◽  
Amir Hossein Behravesh ◽  
Sadegh Hasannia ◽  
Seyyed Alireza Alavinasab Ardebili ◽  
Behnam Akhoundi ◽  
...  
Keyword(s):  
Lactic Acid ◽  
3D Printing ◽  
Process Parameters ◽  
Acid Synthesis ◽  
Porous Scaffolds ◽  
Digital Light Processing ◽  
Optimization Of Process Parameters

Strain isolation and optimization of process parameters for bioconversion of glycerol to lactic acid

2009 ◽  
Vol 84 (10) ◽  
pp. 1576-1581 ◽  
Author(s):  
An-An Hong ◽  
Ke-Ke Cheng ◽  
Feng Peng ◽  
Sheng Zhou ◽  
Yan Sun ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Process Parameters ◽  
Strain Isolation ◽  
Optimization Of Process Parameters

scholarly journals 3D printing processes for photocurable polymeric materials: technologies, materials, and future trends

2018 ◽  
Vol 16 (3) ◽  
pp. 151-160 ◽  
Author(s):  
Gabriele Taormina ◽  
Corrado Sciancalepore ◽  
Massimo Messori ◽  
Federica Bondioli
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Process Parameters ◽  
Polymeric Materials ◽  
Future Trends ◽  
Digital Light Processing ◽  
General Overview ◽  
Base Matrix ◽  
Main Factors ◽  
Printing Processes

The aim of this review is a faithful report of the panorama of solutions adopted to fabricate a component using vat photopolymerization (VP) processes. A general overview on additive manufacturing and on the different technologies available for polymers is given. A comparison between stereolithography and digital light processing is also presented, with attention to different aspects and to the advantages and limitations of both technologies. Afterward, a quick overview of the process parameters is given, with an emphasis on the necessities and the issues associated with the VP process. The materials are then explored, starting from base matrix materials to composites and nanocomposites, with attention to examples of applications and explanations of the main factors involved.

Calcium Alkaline Phosphate Scaffolds for Bone Regeneration 3D-Fabricated by Additive Manufacturing

2011 ◽  
Vol 493-494 ◽  
pp. 849-854 ◽  
Author(s):  
Renate Gildenhaar ◽  
C. Knabe ◽  
C. Gomes ◽  
Ulf Linow ◽  
A. Houshmand ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Bone Regeneration ◽  
Process Parameters ◽  
Ceramic Powder ◽  
Maxillofacial Surgery ◽  
Free Form ◽  
Porous Scaffolds ◽  
Printing Process ◽  
Alkaline Phosphate

Calcium alkaline phosphate granulates can be used for substitution of several bone defects but for the reconstruction of large skeletal parts in the maxillofacial and orthopaedic fields fitted scaffolds are preferable. Within the additive manufacturing methods, the 3D printing process offers exciting opportunities to generate defined porous scaffolds. We used a R1 printer from ProMetal Company, USA, for producing scaffolds directly from a ceramic powder. For this direct free form fabrication technology the powder has to possess a lot of specific properties both for the generation of a stable green body and also for the subsequent sintering preparation. For this printing process we prepared different granules in a fluidized bed process containing Ca2KNa(PO4)2as main crystalline phase. Granules were characterized by different methods and several sieve fractions were used for preparing disc like and cylindrical parts. The suitability of granules for this printing process was determined by porosity and strength of produced bodies. Next to granules’ performance both of these properties can be directly influenced by 3D printing process parameters. With knowledge of suitable process parameters scaffolds with different porosity in a respective desired design can be created. In this study, cylindrical scaffolds with graded porosity were produced for bone regeneration of segmental defects in maxillofacial surgery and dental implantology by tissue engineering.

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