2021
DOI: 10.1002/adem.202100985
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Scalable Fabrication of Microcellular Open‐Cell Polymer Foams

Abstract: Open‐cell foams are foams with porous, interconnected cellular structure. This unique structure has given open‐cell foams the versatility to be used in different types of applications including acoustics, filtration, membranes, and bioscaffolds. Conventional open‐cell polymer foams comprise mainly thermosetting and/or crosslinked materials; such materials are difficult to process and have limited end‐product recyclability. This article presents a commercially viable molding process to fabricate open‐cell foams… Show more

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Cited by 5 publications
(4 citation statements)
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“…As the PET nanofibrils were dispersed through the PP matrix to act as reinforcements, their presence formed a network of fibers within the PP matrix to increase the melt strength and viscosity. With a greater melt strength, the matrix is able to reduce the amount of cell coalescence after cell nucleation [ 27 ]. In addition, the PET nanofibrils will also provide increases to the cell nucleation and crystal nucleation [ 2 , 31 ].…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…As the PET nanofibrils were dispersed through the PP matrix to act as reinforcements, their presence formed a network of fibers within the PP matrix to increase the melt strength and viscosity. With a greater melt strength, the matrix is able to reduce the amount of cell coalescence after cell nucleation [ 27 ]. In addition, the PET nanofibrils will also provide increases to the cell nucleation and crystal nucleation [ 2 , 31 ].…”
Section: Resultsmentioning
confidence: 99%
“…By retracting the mold to a fixed distance, the cavity pressure rapidly drops and the polymer undergoes a strong thermodynamic instability. As the pressure falls below the solubility pressure, cells begin to nucleate and grow [ 22 , 24 , 27 ]. The spunbond webs are fed into the Arburg injection molding machine with the same processing conditions as indicated in Table 3 .…”
Section: Methodsmentioning
confidence: 99%
“…Pang et al reviewed in 2022 six resulting types of cell structures (60) depending on the evolution of the cell size, the cell density and the expansion ratio. It seems microcellular foams are mostly closed-cell (60), however open-cell microcellular foams have also been produced (62). Injection moulded foams have a solid skin on their surface (fig.…”
Section: Microcellular Foamsmentioning
confidence: 99%
“…Ishikawa 13 visualized the relationship between core-back speed, pressure drop rate as detected by pressure sensors, and cell nucleation and growth. Foamed components with high open-cell content [14][15][16] and high expansion ratios [17][18][19] can be fabricated by combining high-pressure FIM with the core-back process. Ameli 20 and Jahani 21 also used foamed components generated through the core-back process for sound insulation and thermal insulation applications.…”
Section: Introductionmentioning
confidence: 99%