3D printing with high content of lignin enabled by introducing polyurethane

Zhou, Xinyuan; Ren, Zechun; Sun, Hao; Bi, Hongjie; Gu, Tongfei; Xu, Min

doi:10.1016/j.ijbiomac.2022.09.076

Cited by 23 publications

(6 citation statements)

References 48 publications

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“…The large-scale utilization of lignin in 3D printing is still a great challenge due to its inherent brittleness and non-thermoplasticity. Thermoplastic polyurethane regulates the rheological properties of lignin for 3D printing [287]. Other examples are given in Table 4.…”

Section: Three-dimensional-printing-based Lignin Biomaterialsmentioning

confidence: 99%

Lignins as Promising Renewable Biopolymers and Bioactive Compounds for High-Performance Materials

Vasile

Baican

2023

Polymers

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The recycling of biomass into high-value-added materials requires important developments in research and technology to create a sustainable circular economy. Lignin, as a component of biomass, is a multipurpose aromatic polymer with a significant potential to be used as a renewable bioresource in many fields in which it acts both as promising biopolymer and bioactive compound. This comprehensive review gives brief insights into the recent research and technological trends on the potential of lignin development and utilization. It is divided into ten main sections, starting with an outlook on its diversity; main properties and possibilities to be used as a raw material for fuels, aromatic chemicals, plastics, or thermoset substitutes; and new developments in the use of lignin as a bioactive compound and in nanoparticles, hydrogels, 3D-printing-based lignin biomaterials, new sustainable biomaterials, and energy production and storage. In each section are presented recent developments in the preparation of lignin-based biomaterials, especially the green approaches to obtaining nanoparticles, hydrogels, and multifunctional materials as blends and bio(nano)composites; most suitable lignin type for each category of the envisaged products; main properties of the obtained lignin-based materials, etc. Different application categories of lignin within various sectors, which could provide completely sustainable energy conversion, such as in agriculture and environment protection, food packaging, biomedicine, and cosmetics, are also described. The medical and therapeutic potential of lignin-derived materials is evidenced in applications such as antimicrobial, antiviral, and antitumor agents; carriers for drug delivery systems with controlled/targeting drug release; tissue engineering and wound healing; and coatings, natural sunscreen, and surfactants. Lignin is mainly used for fuel, and, recently, studies highlighted more sustainable bioenergy production technologies, such as the supercapacitor electrode, photocatalysts, and photovoltaics.

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Section: Three-dimensional-printing-based Lignin Biomaterialsmentioning

confidence: 99%

Lignins as Promising Renewable Biopolymers and Bioactive Compounds for High-Performance Materials

Vasile

Baican

2023

Polymers

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“…They discovered that sulfuric-acid pretreatment increased the mechanical properties of soy-hull-reinforced 3D-printed composites and that water uptake is lower at lower percentages of natural fibers. Zhou et al studied high loading of lignin in TPU for 3D printing composites and found that the mechanical properties peak at 50 wt.% lignin [47]. They further investigated the addition of carbon fiber and showed a 67% improvement in tensile strength, which is more than the tensile strength exhibited by a composite with 20 wt.% kenaf fiber.…”

Section: Materials Compatibility and Natural Fiber Composites In Fdmmentioning

confidence: 99%

Natural Fiber Composite Filaments for Additive Manufacturing: A Comprehensive Review

Khilji,

Chilakamarry,

Surendran

et al. 2023

Sustainability

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This research explores the potential and significance of 3D printing natural fiber composite (NFC) materials. The primary objective is to investigate the mechanical, thermal, and environmental properties of NFC filaments, mainly focusing on biodegradable, renewable fibers such as jute, hemp, flax, and kenaf. In addition to studying the properties of NFCs, our research delves into the challenges associated with processing, including moisture absorption and fiber-matrix interfacial bonding. The novelty of this work lies in the convergence of traditional composite materials with the versatility of 3D printing technology. NFC filaments offer unique advantages in terms of sustainability, and we examine their potential contributions to the circular economy. By using eco-friendly NFC materials in 3D printing, we aim to present a viable, environmentally responsible alternative to conventional synthetic composites. The importance of 3D printing NFCs stems from the ways their use can align with sustainability goals. These materials provide the advantages of renewability, reduced carbon impact, and in some cases, biodegradability. Their applications extend to various industries, such as automotive, construction, and packaging, where eco-friendly materials are increasingly sought. Such applications showcase the ways in which NFC-based 3D printing can contribute to a more environmentally responsible and sustainable future. This research explores the mechanical, thermal, and environmental properties of NFC materials, highlighting their unique advantages for 3D printing and the potential to have eco-friendly applications in diverse industries.

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“…Furthermore, lignin-based composites exhibit unique rheological properties that enable processing through various techniques such as extrusion, compression molding, and 3D printing. 27 Modifying the lignin structure allows for tailoring the surface properties of lignin-based composites, resulting in improved water resistance, biodegradability, and surface energy. 28 These properties make composites attractive for advanced applications, including those in the biomedical field, drug delivery, and tissue engineering.…”

Section: Introductionmentioning

confidence: 99%