Current advances and future perspectives of additive manufacturing for functional polymeric materials and devices

The use of additive manufacturing (AM) has moved well beyond prototyping and has been established as a highly versatile manufacturing method with demonstrated potential to completely transform traditional manufacturing in the future. In this paper, a comprehensive review and critical analyses of the recent advances and achievements in the field of different AM processes for polymers, their composites and nanocomposites, elastomers and multi materials, shape memory polymers and thermo-responsive materials are presented. Moreover, their applications in different fields such as bio-medical, electronics, textiles, and aerospace industries are also discussed. We conclude the article with an account of further research needs and future perspectives of AM process with polymeric materials.

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Harnessing additive manufacturing for magnesium-based metallic bioimplants: Recent advances and future perspectives

Current Opinion in Biomedical Engineering ◽

10.1016/j.cobme.2021.100264 ◽

2021 ◽

Vol 17 ◽

pp. 100264

Author(s):

Vicky Subhash Telang ◽

Rakesh Pemmada ◽

Vinoy Thomas ◽

Seeram Ramakrishna ◽

Puneet Tandon ◽

...

Keyword(s):

Additive Manufacturing ◽

Future Perspectives ◽

Recent Advances

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Recent Developments in Lignin- and Tannin-Based Non-Isocyanate Polyurethane Resins for Wood Adhesives—A Review

Applied Sciences ◽

10.3390/app11094242 ◽

2021 ◽

Vol 11 (9) ◽

pp. 4242

Author(s):

Manggar Arum Aristri ◽

Muhammad Adly Rahandi Lubis ◽

Sumit Manohar Yadav ◽

Petar Antov ◽

Antonios N. Papadopoulos ◽

...

Keyword(s):

Automotive Industry ◽

Polymeric Materials ◽

Review Article ◽

Future Perspectives ◽

Wood Adhesives ◽

Adhesion Properties ◽

Lighting Industry ◽

Renewable Natural Resources ◽

Recent Developments ◽

Strong Adhesion

This review article aims to summarize the potential of using renewable natural resources, such as lignin and tannin, in the preparation of NIPUs for wood adhesives. Polyurethanes (PUs) are extremely versatile polymeric materials, which have been widely used in numerous applications, e.g., packaging, footwear, construction, the automotive industry, the lighting industry, insulation panels, bedding, furniture, metallurgy, sealants, coatings, foams, and wood adhesives. The isocyanate-based PUs exhibit strong adhesion properties, excellent flexibility, and durability, but they lack renewability. Therefore, this study focused on the development of non-isocyanate polyurethane lignin and tannin resins for wood adhesives. PUs are commercially synthesized using polyols and polyisocyanates. Isocyanates are toxic, costly, and not renewable; thus, a search of suitable alternatives in the synthesis of polyurethane resins is needed. The reaction with diamine compounds could result in NIPUs based on lignin and tannin. The research on bio-based components for PU synthesis confirmed that they have good characteristics as an alternative for the petroleum-based adhesives. The advantages of improved strength, low curing temperatures, shorter pressing times, and isocyanate-free properties were demonstrated by lignin- and tannin-based NIPUs. The elimination of isocyanate, associated with environmental and human health hazards, NIPU synthesis, and its properties and applications, including wood adhesives, are reported comprehensively in this paper. The future perspectives of NIPUs’ production and application were also outlined.

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Study of Physical and Degradation Properties of 3D-Printed Biodegradable, Photocurable Copolymers, PGSA-co-PEGDA and PGSA-co-PCLDA

Polymers ◽

10.3390/polym10111263 ◽

2018 ◽

Vol 10 (11) ◽

pp. 1263 ◽

Cited By ~ 9

Author(s):

June-Yo Chen ◽

Joanne Hwang ◽

Wai-Sam Ao-Ieong ◽

Yung-Che Lin ◽

Yi-Kong Hsieh ◽

...

Keyword(s):

Additive Manufacturing ◽

Weight Ratio ◽

Polymeric Materials ◽

Pure Substance ◽

Digital Light Processing ◽

Glycol Diacrylate ◽

Young’S Moduli ◽

Potential Applications ◽

Degradation Properties

As acrylated polymers become more widely used in additive manufacturing, their potential applications toward biomedicine also raise the demand for biodegradable, photocurable polymeric materials. Polycaprolactone diacrylate (PCLDA) and poly(ethylene glycol) diacrylate (PEGDA) are two popular choices of materials for stereolithography (SLA) and digital light processing additive manufacturing (DLP-AM), and have been applied to many biomedical related research. However, both materials are known to degrade at a relatively low rate in vivo, limiting their applications in biomedical engineering. In this work, biodegradable, photocurable copolymers are introduced by copolymerizing PCLDA and/or PEGDA with poly(glycerol sebacate) acrylate (PGSA) to form a network polymer. Two main factors are discussed: the effect of degree of acrylation in PGSA and the weight ratio between the prepolymers toward the mechanical and degradation properties. It is found that by blending prepolymers with various degree of acrylation and at various weight ratios, the viscosity of the prepolymers remains stable, and are even more 3D printable than pure substances. The formation of various copolymers yielded a database with selectable Young’s moduli between 0.67–10.54 MPa, and the overall degradation rate was significantly higher than pure substance. In addition, it is shown that copolymers fabricated by DLP-AM fabrication presents higher mechanical strength than those fabricated via direct UV exposure. With the tunable mechanical and degradation properties, the photocurable, biodegradable copolymers are expected to enable a wider application of additive manufacturing toward tissue engineering.

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Additive manufacturing of ceramics: Present status and future perspectives

10.31224/osf.io/gk9n6 ◽

2021 ◽

Author(s):

Mainak Saha ◽

Manab Mallik

Keyword(s):

Mechanical Properties ◽

Additive Manufacturing ◽

Microstructure Evolution ◽

Review Article ◽

Low Density ◽

Structure Property ◽

Future Perspectives ◽

Structural Applications ◽

Systematic Structure ◽

State Of Research

At present, fabrication of ceramics using AM-based techniques mainly suffers from two primary limitations, viz: (i) low density and (ii) poor mechanical properties of the finished components. It is worth mentioning that the present state of research in the avenue of AM-based ceramics is focussed mainly on fabricating ceramic and cermet components with enhanced densities and improved mechanical properties. However, to the best of the authors’ knowledge, not much is known about the microstructure evolution and its correlation with the mechanical properties of the finished parts. Addressing the aforementioned avenue is highly essential for understanding the utilisation of these components for structural applications. To this end, the present review article is aimed to address the future perspectives in this avenue has been provided with a special emphasis on the need to establish a systematic structure-property correlation in these materials.

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Additive manufacturing of ceramics and cermets: present status and future perspectives

10.31224/osf.io/f6h95 ◽

2021 ◽

Author(s):

Mainak Saha ◽

Manab Mallik

Keyword(s):

Mechanical Properties ◽

Additive Manufacturing ◽

Present Status ◽

Interdisciplinary Research ◽

Low Density ◽

Metallic Materials ◽

Structure Property ◽

Future Perspectives ◽

Present Decade ◽

Systematic Structure

The present decade has witnessed a huge volume of research revolving around a number of Additive Manufacturing (AM) techniques, especially for the fabrication of different metallic materials. However, fabrication of ceramics and cermets using AM-based techniques mainly suffers from two primary limitations which are: (i) low density and (ii) poor mechanical properties of the final components. Although there has been a considerable volume of work on AM based techniques for manufacturing ceramic and cermet parts with enhanced densities and improved mechanical properties, however, there is limited understanding on the correlation of microstructure of AM-based ceramic and cermet components with the mechanical properties. The present article is aimed to review some of the most commonly used AM techniques for the fabrication of ceramics and cermets. This has been followed by a brief discussion on the microstructural developments during different AM-based techniques. In addition, an overview of the challenges and future perspectives, mainly associated with the necessity towards developing a systematic structure-property correlation in these materials has been provided based on three factors viz. the efficiency of different AM-based fabrication techniques (involved in ceramic and cermet research), an interdisciplinary research combining ceramic research with microstructural engineering and commercialisation of different AM techniques based on the authors’ viewpoints.

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Smart additive manufacturing: Current artificial intelligence-enabled methods and future perspectives

Science China Technological Sciences ◽

10.1007/s11431-020-1581-2 ◽

2020 ◽

Vol 63 (9) ◽

pp. 1600-1611

Author(s):

YuanBin Wang ◽

Pai Zheng ◽

Tao Peng ◽

HuaYong Yang ◽

Jun Zou

Keyword(s):

Artificial Intelligence ◽

Additive Manufacturing ◽

Future Perspectives

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Current challenges and potential directions towards precision microscale additive manufacturing – Part IV: Future perspectives

Precision Engineering ◽

10.1016/j.precisioneng.2020.12.014 ◽

2021 ◽

Vol 68 ◽

pp. 197-205 ◽

Cited By ~ 1

Author(s):

Dipankar Behera ◽

Samira Chizari ◽

Lucas A. Shaw ◽

Michael Porter ◽

Ryan Hensleigh ◽

...

Keyword(s):

Additive Manufacturing ◽

Future Perspectives

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Additive manufacturing of shape memory polymers: effects of print orientation and infill percentage on shape memory recovery properties

Rapid Prototyping Journal ◽

10.1108/rpj-09-2019-0239 ◽

2020 ◽

Vol 26 (9) ◽

pp. 1593-1602

Author(s):

Jorge Villacres ◽

David Nobes ◽

Cagri Ayranci

Keyword(s):

Additive Manufacturing ◽

Shape Memory ◽

Shape Recovery ◽

Fused Deposition Modeling ◽

Large Strain ◽

Shape Memory Polymers ◽

Polymeric Materials ◽

Content Type ◽

Fused Deposition ◽

Memory Recovery

Purpose The purpose of this paper is to study the shape memory properties of SMP samples produced through a MEAM process. Fused deposition modeling or, as it will be referred to in this paper, material extrusion additive manufacturing (MEAM) is a technique in which polymeric materials are extruded though a nozzle creating parts via accumulation and joining of different layers. These layers are fused together to build three-dimensional objects. Shape memory polymers (SMP) are stimulus responsive materials, which have the ability to recover their pre-programmed form after being exposed to a large strain. To induce its shape memory recovery movement, an external stimulus such as heat needs to be applied. Design/methodology/approach This project investigates and characterizes the influence of print orientation and infill percentage on shape recovery properties. The analyzed shape recovery properties are shape recovery force, shape recovery speed and time elapsed before activation. To determine whether the analyzed factors produce a significant variation on shape recovery properties, t-tests were performed with a 95% confidence factor between each analyzed level. Findings Results proved that print angle and infill percentage do have a significant impact on recovery properties of the manufactured specimens. Originality/value The manufacturing of SMP objects through a MEAM process has a vast potential for different applications; however, the shape recovery properties of these objects need to be analyzed before any practical use can be developed. These have not been studied as a function of print parameters, which is the focus of this study.

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