Digital light processing 3D printing of modified liquid isoprene rubber using thiol-click chemistry

Strohmeier, Lara; Frommwald, Heike; Schlögl, Sandra

doi:10.1039/d0ra04186f

Cited by 26 publications

(22 citation statements)

References 44 publications

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“…165,166 For example, Strohmeier et al reported the use of divinyl ethers as reactive diluents to reduce the viscosity of methacrylated liquid isoprene rubber from 79 Pa s to <6 Pa s, allowing it to be used with DLP printing. 167 Photosensitive slurries used in ceramic VP need to carefully manage their solid loadings such that they are low enough for their viscosities to be manageable but still sufficiently high that the final ceramic part has the desired properties. 114 Liu et al demonstrated this in their fabrication of alumina with DLP printing: materials made from slurries with 55 vol% of particles exhibited the least shrinkage, but the high viscosities affected the recoating process and resulted in internal defects that weakened the material.…”

Section: Viscositymentioning

confidence: 99%

Three‐dimensional chemical reactors: in situ materials synthesis to advance vat photopolymerization

Yee

Greer

2021

Polymer International

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Vat photopolymerization (VP) is one of the most remarkable additive manufacturing techniques today and has been used for a variety of applications, from materials research to product manufacturing. The main challenge with VP is the limited choice of compatible materials, which motivates significant interest in VP materials development. We provide a brief overview of the materials that are currently accessible via VP and highlight recent advances in the field. We also provide perspective on expanding the library of materials compatible with VP using in situ materials synthesis.

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Section: Viscositymentioning

confidence: 99%

Three‐dimensional chemical reactors: in situ materials synthesis to advance vat photopolymerization

Yee

Greer

2021

Polymer International

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“…In addition, the conversion of the metal precursor by sol-gel can be determined via Equation (2), where w 1 refers again to the residual weight of the sample and w 3 to the mass of reinforcing filler, which should have been generated assuming quantitative conversion. [23,49,51,59] Precursor conversion %…”

Section: Sol-gel Derived In Situ Fillersmentioning

confidence: 99%

“…[1] Besides traditional manufacturing, new technologies such as additive manufacturing are on the rise, which enable the preparation of tailor-made rubber products. [2,3] Tough, the most innovative technology would be negligible without the reinforcing power of fillers.…”

Section: Introductionmentioning

confidence: 99%

Approaches TowardIn SituReinforcement of Organic Rubbers: Strategy and Recent Progress

2021

Self Cite

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Organic rubbers, comprising carbon-carbon links in their polymer backbone, are an essential part of modern everyday life. Tough, their unique properties are mainly governed by reinforcing fillers such as carbon black and silica. However, the reinforcing power is not only driven by the chemical nature of fillers but also by their particle size, shape, distribution and dispersion. In order to minimize agglomeration and processing difficulties, the idea of in situ generated fillers has been approached. In situ means "locally" and refers to the generation of fillers during the vulcanization process. This versatile technique provides individual tailoring of rubber compounds due to numerous possible reaction pathways. In situ reinforcement has been reported for all relevant rubber matrixes and is already employed commercially. In this review, a comprehensive overview of possible in situ reinforcing strategies for organic rubbers and their impact on mechanical properties is provided. It covers the reinforcing power of sol-gel derived in situ fillers, metal salts of unsaturated carboxylic acids as well as the formation of interpenetrating networks with resins in detail.

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“…[41] This way, biological and chemical modifications can be conducted in the latex phase not only for NR but for other diene rubbers as well. [53] Modifications on latex phase include preparation of nanoparticles, [54,55] composites, [56][57][58] degradation studies, [5,44] vulcanization, and introduction of cross-links, [59,60] functionalization with organic compounds [14,61,62] and among others. [46,63]…”

Section: Modifications Of the Latex Phasementioning

confidence: 99%

“…Schlögl and coworkers employed thiol-ene reactions to photocross-link liquid isoprene rubber to obtain precise structures by 3D printing. [59] Zhong et al reported the preparation of ultrathin honeycomb-patterned membranes. [138] The authors cross- linked the commercially available polystyrene-b-polyisoprene-bpolystyrene triblock copolymer and an amphiphilic copolymer based on polystyrene using a tri-thiol to build the cross-links.…”

Section: Rubber Modifications Via Thiol-x Reactionsmentioning

confidence: 99%

Enzymatic and Chemical Approaches for Post‐Polymerization Modifications of Diene Rubbers: Current state and Perspectives

Soares

Steinbüchel

2021

Macromolecular Bioscience

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Diene rubbers are polymeric materials which present elastic properties and have double bonds in the macromolecular backbone after the polymerization process. Post-polymerization modifications of rubbers can be conducted by enzymatic or chemical methods. Enzymes are environmentally friendly catalysts and with the increasing demand for rubber waste management, biodegradation and biomodifications have become hot topics of research. Some rubbers are renewable materials and are a source of organic molecules, and biodegradation can be conducted to obtain either oligomers or monomers. On the other hand, chemical modifications of rubbers by click-chemistry are important strategies for the creation and combination of new materials. In a way to expand the scope of uses to other non-traditional applications, several and effective modifications can be conducted with diene rubbers. Two groups of efficient tools, enzymatic, and chemical modifications in diene rubbers, are summarized in this review. By analyzing stereochemical and reactivity aspects, the authors also point to some applications perspectives for biodegradation products and to rational modifications of diene rubbers by combining both methodologies.

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Digital light processing 3D printing of modified liquid isoprene rubber using thiol-click chemistry

Abstract: Elastomer-based 3D objects with good resolution are fabricated by additive manufacturing of photo-reactive liquid rubber formulations with digital light processing.

Cited by 26 publications

References 44 publications

Three‐dimensional chemical reactors: in situ materials synthesis to advance vat photopolymerization

Three‐dimensional chemical reactors: in situ materials synthesis to advance vat photopolymerization

Approaches TowardIn SituReinforcement of Organic Rubbers: Strategy and Recent Progress

Enzymatic and Chemical Approaches for Post‐Polymerization Modifications of Diene Rubbers: Current state and Perspectives

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