scholarly journals 3D-printed monolithic biofilters based on a polylactic acid (PLA) – hydroxyapatite (HAp) composite for heavy metal removal from an aqueous medium

RSC Advances ◽  
2021 ◽  
Vol 11 (51) ◽  
pp. 32408-32418
Author(s):  
Natalia Fijoł ◽  
Hani Nasser Abdelhamid ◽  
Binsi Pillai ◽  
Stephen A. Hall ◽  
Nebu Thomas ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Phase Separation ◽  
3D Printing ◽  
Polylactic Acid ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Three Dimensional ◽  
Thermally Induced Phase Separation ◽  
Thermally Induced ◽  
3D Printed

Water purification filters based on polylactic acid functionalised with hydroxyapatite were prepared by solvent-assisted blending and thermally induced phase separation (TIPS), extruded into filaments and processed via three-dimensional (3D) printing.

Comparison of Supermacroporous Polyester Matrices Fabricated by Thermally Induced Phase Separation and 3D Printing Techniques

2019 ◽  
Vol 822 ◽  
pp. 277-283
Author(s):  
Mariia Stepanova ◽  
Aleksei Eremin ◽  
Ilia Averianov ◽  
Iosif Gofman ◽  
Antonina Lavrentieva ◽  
...  
Keyword(s):  
Phase Separation ◽  
3D Printing ◽  
Three Dimensional ◽  
Uniaxial Compression Test ◽  
Thermally Induced Phase Separation ◽  
Cell Penetration ◽  
Thermally Induced ◽  
Printing Technique ◽  
3D Printing Technique ◽  
Printing Techniques

Supermacroporous three-dimensional matrices based on poly-D,L-lactide or polycaprolactone were fabricated by thermally induced phase separation method and 3D printing technique. The morphology and mechanical properties of the resulting matrices were studied with the use of optical and scanning electron microscopy and the uniaxial compression test, respectively. All matrices were characterized with supermacroporous structure suitable for cell penetration. A significant increase in Young's modulus and tensile strength was established for both polymer matrices prepared by 3D printing technique.

scholarly journals Synchrotron X-ray In Situ Tomography of Thermally Induced Phase Separation of Polylactic Acid in 1,4-Dioxane Solution

2018 ◽  
Vol 18 (12) ◽  
pp. 7496-7503 ◽  
Author(s):  
Swann Gay ◽  
Brice Calvignac ◽  
Landry Ouanssi Kamtcheu ◽  
Thomas Beuvier ◽  
Elodie Boller ◽  
...  
Keyword(s):  
Phase Separation ◽  
Polylactic Acid ◽  
Dioxane Solution ◽  
Thermally Induced Phase Separation ◽  
Thermally Induced ◽  
X Ray

Preparation of Three-Dimensional Scaffolds from Degradable Poly(ether)esterurethane by Thermally-Induced Phase Separation

2011 ◽  
Vol 309-310 (1) ◽  
pp. 76-83 ◽  
Author(s):  
Karola Luetzow ◽  
Thomas Weigel ◽  
Michael Schossig ◽  
Karl Kratz ◽  
Andreas Lendlein
Keyword(s):  
Phase Separation ◽  
Three Dimensional ◽  
Thermally Induced Phase Separation ◽  
Thermally Induced

scholarly journals Recent Progress on Biodegradable Tissue Engineering Scaffolds Prepared by Thermally-Induced Phase Separation (TIPS)

2021 ◽  
Vol 22 (7) ◽  
pp. 3504
Author(s):  
Reza Zeinali ◽  
Luis J. del Valle ◽  
Joan Torras ◽  
Jordi Puiggalí
Keyword(s):  
Tissue Engineering ◽  
Phase Separation ◽  
Material Selection ◽  
Three Dimensional ◽  
Target Cells ◽  
Porous Scaffolds ◽  
Thermally Induced Phase Separation ◽  
Tissue Engineering Scaffolds ◽  
Thermally Induced ◽  
Biodegradable Scaffolds

Porous biodegradable scaffolds provide a physical substrate for cells allowing them to attach, proliferate and guide the formation of new tissues. A variety of techniques have been developed to fabricate tissue engineering (TE) scaffolds, among them the most relevant is the thermally-induced phase separation (TIPS). This technique has been widely used in recent years to fabricate three-dimensional (3D) TE scaffolds. Low production cost, simple experimental procedure and easy processability together with the capability to produce highly porous scaffolds with controllable architecture justify the popularity of TIPS. This paper provides a general overview of the TIPS methodology applied for the preparation of 3D porous TE scaffolds. The recent advances in the fabrication of porous scaffolds through this technique, in terms of technology and material selection, have been reviewed. In addition, how properties can be effectively modified to serve as ideal substrates for specific target cells has been specifically addressed. Additionally, examples are offered with respect to changes of TIPS procedure parameters, the combination of TIPS with other techniques and innovations in polymer or filler selection.

Water decontamination by polyoxometalate-functionalized 3D-printed hierarchical porous devices

2018 ◽  
Vol 54 (24) ◽  
pp. 3018-3021 ◽  
Author(s):  
Yuanchun Ji ◽  
Yuan Ma ◽  
Yanjiao Ma ◽  
Jakob Asenbauer ◽  
Stefano Passerini ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Surface Modification ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Chemical Surface ◽  
Inorganic Composites ◽  
Chemical Surface Modification ◽  
Hierarchical Porous ◽  
Oxide Deposition ◽  
3D Printed

Organic–inorganic composites are reported, where 3D printing, chemical surface modification and molecular metal oxide deposition are combined, enabling heavy metal removal from water.

scholarly journals Novel biodegradable poly(propylene fumarate)-co-poly(l-lactic acid) porous scaffolds fabricated by phase separation for tissue engineering applications

RSC Advances ◽  
2015 ◽  
Vol 5 (27) ◽  
pp. 21301-21309 ◽  
Author(s):  
Xifeng Liu ◽  
A. Lee Miller II ◽  
Brian E. Waletzki ◽  
Michael J. Yaszemski ◽  
Lichun Lu
Keyword(s):  
Lactic Acid ◽  
Phase Separation ◽  
Three Dimensional ◽  
Porous Scaffolds ◽  
Porous Structures ◽  
Polymer Scaffolds ◽  
Thermally Induced Phase Separation ◽  
Thermally Induced ◽  
Biodegradable Poly ◽  
Poly Propylene

Three-dimensional polymer scaffolds with interconnected porous structures were fabricated by thermally induced phase separation of novel biodegradable poly(propylene fumarate)-co-poly(l-lactic acid).

scholarly journals The Effect of Chemical Cleaning on Mechanical Properties of Three-Dimensional Printed Polylactic Acid

2020 ◽  
Vol 14 (1) ◽  
Author(s):  
Julie C. Fleischer ◽  
Jan C. Diehl ◽  
Linda S. G. L. Wauben ◽  
Jenny Dankelman
Keyword(s):  
Mechanical Properties ◽  
3D Printing ◽  
Polylactic Acid ◽  
Three Dimensional ◽  
Spare Parts ◽  
Healthcare Sector ◽  
Strength Increase ◽  
Chemical Cleaning ◽  
Middle Income ◽  
3D Printed

Abstract Three-dimensional (3D) printing may be a solution to shortages of equipment and spare parts in the healthcare sector of low- and middle-income countries (LMICs). Polylactic acid (PLA) for 3D printing is widely available and biocompatible, but there is a gap in knowledge concerning its compatibility with chemical disinfectants. In this study, 3D-printed PLA tensile samples were created with six different printer settings. Each of these six batches consisted of five sets with five or six samples. The first set remained untreated, the others were soaked in Cidex OPA or in a chlorine solution. These were applied for seven consecutive days or in 25 short cycles. All samples were weighed before and after treatment and subjected to a tensile test. Results showed that a third of the treatments led to an increase of the median weight with a maximum of 8.3%, however, the samples with the best surface quality did not change. The median strength increase was 12.5% and the largest decrease was 8.8%. The median stiffness decreased 3.6% in one set and increased in three others up to 13.6%. When 3D printing PLA medical tools, surface porosity must be minimized to prevent transfer of disinfectants to people. The wide variability of mechanical properties due to 3D printing itself and as a consequence of disinfection must be considered when designing medical tools by selecting appropriate printer settings. If these conditions are met, reusing 3D-printed PLA medical tools seems safe from a mechanical point of view.

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