Abstract
Background: Since the rapid development of polymers in the 1920’s, polymer products have become a necessary part of people's lives. Supercritical fluid technology was gradually introduced in this field. With the emergence of new technologies, methods, and equipment, the supercritical fluid technology has rapidly developed in the field of polymers and displayed a broad application perspective.
Objective: The research progress of supercritical fluid-assisted polymer foaming, including equipment improvement, polymer composition ratio, and foaming process, and the influence of these processes on polymer foaming materials is reviewed here.
Methods: Patents and research progress of supercritical fluid assisted polymer foams were reviewed. The advantages and disadvantages of various patents are analyzed in terms of cell structure, mechanical properties, surface quality, processing performance, and cost.
Results: The foaming equipment and the manufacturing process of polymer foaming materials were retrospected, in order to improve the quality and application prospect of foaming composites.
Conclusion: The preparation technology of supercritical fluid polymer foams has attracted wide attention. In recent years, patented technology has enabled us to use the supercritical fluid polymer foaming materials. There are some problems in the supercritical fluid foaming in terms of mechanical properties, cell structure, cell size, and processing technology, therefore, more equipment and patents are needed to solve these problems in the future.
Keywords: Equipment, foaming, patents, polymers, process, supercritical fluids, technologies.
[1]
Lan Z, Kaixun C. Application and development of supercritical CO2 technology. Petrochemical Technology 2012; 5: 501-9.
[2]
Knez Ž, Markočič E, Leitgeb M, Primožič M, Knez Hrnčič M, Škerget M. Industrial applications of supercritical fluids: A review. Energy 2014; 77: 235-43.
[http://dx.doi.org/10.1016/j.energy.2014.07.044]
[http://dx.doi.org/10.1016/j.energy.2014.07.044]
[3]
Sauceau M, Fages J, Common A, Nikitine C, Rodier É. New challenges in polymer foaming: A review of extrusion processes assisted by supercritical carbon dioxide. Prog Polym Sci 2011; 36(6): 749-66.
[http://dx.doi.org/10.1016/j.progpolymsci.2010.12.004]
[http://dx.doi.org/10.1016/j.progpolymsci.2010.12.004]
[4]
Tsivintzelis I, Sanxaridou G, Pavlidou E, Panayiotou C. Foaming of polymers with supercritical fluids: A thermodynamic investigation. J Supercrit Fluids 2016; 110: 240-50.
[http://dx.doi.org/10.1016/j.supflu.2015.11.025]
[http://dx.doi.org/10.1016/j.supflu.2015.11.025]
[5]
Le Moigne N, Sauceau M, Chauvet M, Bénézet JC, Fages J. Microcellular Foaming of (Nano) Biocomposites by Continuous Extrusion Assisted by Supercritical CO2. In: Ayoub A, Lucia L, Eds.. Biomass Extrusion and Reaction Technologies: Principles to Practices and Future Potential. American Chemical Society Publications 2018; pp. 171-88.
[6]
Tsai WC, Wang Y. Progress of supercritical fluid technology in polymerization and its applications in biomedical engineering. Prog Polym Sci 2019; 98, 101161
[http://dx.doi.org/10.1016/j.progpolymsci.2019.101161]
[http://dx.doi.org/10.1016/j.progpolymsci.2019.101161]
[7]
Liu P, Chen W, Liu C, Tian M, Liu P. A novel poly (vinyl alcohol)/poly (ethylene glycol) scaffold for tissue engineering with a unique bimodal open-celled structure fabricated using supercritical fluid foaming. Sci Rep 2019; 9(1): 9534.
[http://dx.doi.org/10.1038/s41598-019-46061-7]
[http://dx.doi.org/10.1038/s41598-019-46061-7]
[8]
Di Maio E, Kiran E. Foaming of polymers with supercritical fluids and perspectives on the current knowledge gaps and challenges. J Supercrit Fluids 2018; 134: 157-66.
[http://dx.doi.org/10.1016/j.supflu.2017.11.013]
[http://dx.doi.org/10.1016/j.supflu.2017.11.013]
[9]
Chakravarty P, Famili A, Nagapudi K, Al-Sayah MA. Using supercritical fluid technology as a green alternative during the preparation of drug delivery systems. Pharmaceutics 2019; 11(12): 629.
[http://dx.doi.org/10.3390/pharmaceutics11120629]
[http://dx.doi.org/10.3390/pharmaceutics11120629]
[10]
Duarte RM, Correia-Pinto J, Reis RL, Duarte AR. Subcritical carbon dioxide foaming of polycaprolactone for bone tissue regeneration. J Supercrit Fluids 2018; 140: 1-10.
[http://dx.doi.org/10.1016/j.supflu.2018.05.019]
[http://dx.doi.org/10.1016/j.supflu.2018.05.019]
[11]
Mi HY, Jing X, Salick MR, Peng XF, Turng LS. A novel thermoplastic polyurethane scaffold fabrication method based on injection foaming with water and supercritical carbon dioxide as coblowing agents. Polym Eng Sci 2014; 54(12): 2947-57.
[http://dx.doi.org/10.1002/pen.23852]
[http://dx.doi.org/10.1002/pen.23852]
[12]
Sun X, Turng LS. Novel injection molding foaming approaches using gas‐laden pellets with N2, CO2, and N2+ CO2 as the blowing agents. Polym Eng Sci 2014; 54(4): 899-913.
[http://dx.doi.org/10.1002/pen.23630]
[http://dx.doi.org/10.1002/pen.23630]
[13]
Hou J, Zhao G, Wang G, Dong G, Xu J. A novel gas-assisted microcellular injection molding method for preparing lightweight foams with superior surface appearance and enhanced mechanical performance. Mater Des 2017; 127: 115-25.
[http://dx.doi.org/10.1016/j.matdes.2017.04.073]
[http://dx.doi.org/10.1016/j.matdes.2017.04.073]
[14]
Yeh SK, Liu YC, Chu CC, Chang KC, Wang SF. Mechanical properties of microcellular and nanocellular thermoplastic polyurethane nanocomposite foams created using supercritical carbon dioxide. Ind Eng Chem Res 2017; 56(30): 8499-507.
[http://dx.doi.org/10.1021/acs.iecr.7b00942]
[http://dx.doi.org/10.1021/acs.iecr.7b00942]
[15]
Astrom BT. Manufacturing of Polymer Composites. 1st ed. CRC Press: Routledge London, UK 2018.
[http://dx.doi.org/10.1201/9780203748169]
[http://dx.doi.org/10.1201/9780203748169]
[16]
Odegard GM, Clancy TC, Gates TS. Modeling of the Mechanical Properties of Nanoparticle/Polymer Composites.In: Abdi A, Garg M, Eds.. Characterization of Nanocomposites. Taylor & Francis Group 2017; pp. 1-24.
[17]
Irving PE, Soutis C. Polymer Composites in the Aerospace Industry. 2nd Ed. Woodhead Publishing: Sawston, Cambridge 2019.
[18]
Saba N, Jawaid M, Alothman OY, Paridah MT. A review on dynamic mechanical properties of natural fibre reinforced polymer composites. Constr Build Mater 2016; 106: 149-59.
[http://dx.doi.org/10.1016/j.conbuildmat.2015.12.075]
[http://dx.doi.org/10.1016/j.conbuildmat.2015.12.075]
[19]
Wang M, Duan X, Xu Y, Duan X. Functional three-dimensional graphene/polymer composites. ACS Nano 2016; 10(8): 7231-47.
[http://dx.doi.org/10.1021/acsnano.6b03349]
[http://dx.doi.org/10.1021/acsnano.6b03349]
[20]
Sanjay MR, Madhu P, Jawaid M, Senthamaraikannan P, Senthil S, Pradeep S. Characterization and properties of natural fiber polymer composites: A comprehensive review. J Clean Prod 2018; 172: 566-81.
[http://dx.doi.org/10.1016/j.jclepro.2017.10.101]
[http://dx.doi.org/10.1016/j.jclepro.2017.10.101]
[21]
Wu Y, Wang Z, Liu X, Shen X, Zheng Q, Xue Q, et al. Ultralight graphene foam/conductive polymer composites for exceptional electromagnetic interference shielding. ACS Appl Mater Interfaces 2017; 9(10): 9059-69.
[http://dx.doi.org/10.1021/acsami.7b01017]
[http://dx.doi.org/10.1021/acsami.7b01017]
[22]
Zhao B, Hamidinejad M, Zhao C, Li R, Wang S, Kazemi Y, et al. A versatile foaming platform to fabricate polymer/carbon composites with high dielectric permittivity and ultra-low dielectric loss. J Mater Chem A Mater Energy Sustain 2019; 7(1): 133-40.
[http://dx.doi.org/10.1039/C8TA05556D]
[http://dx.doi.org/10.1039/C8TA05556D]
[23]
Zhou D, Xiong Y, Yuan H, et al. Synthesis and compressive behaviors of PMMA microporous foam with multi-layer cell structure. Compos, Part B Eng 2019; 165: 272-8.
[http://dx.doi.org/10.1016/j.compositesb.2018.11.118]
[http://dx.doi.org/10.1016/j.compositesb.2018.11.118]
[24]
Cheng JJ, Qu WJ, Sun SH. Mechanical properties improvement and fire hazard reduction of expandable graphite microencapsulated in rigid polyurethane foams. Polym Compos 2019; 40(S2): E1006-14.
[http://dx.doi.org/10.1002/pc.24786]
[http://dx.doi.org/10.1002/pc.24786]
[25]
Hamidinejad M, Chu RK, Filleter T, Park CB. Thermally conductive polymer-graphene nanoplatelet composite foams.AIP Conf
Proc . 2019; 2139, .100001
[http://dx.doi.org/10.1063/1.5121675]
[http://dx.doi.org/10.1063/1.5121675]
[26]
Wang G, Zhao G, Zhang L, Mu Y, Park CB. Lightweight and tough nanocellular PP/PTFE nanocomposite foams with defect-free surfaces obtained using in situ nanofibrillation and nanocellular injection molding. Chem Eng J 2018; 350: 1-11.
[http://dx.doi.org/10.1016/j.cej.2018.05.161]
[http://dx.doi.org/10.1016/j.cej.2018.05.161]
[27]
Jingli L, Shikai L, Yansong S, Haibo Y, Tao L. Research process of microcellular foams prepared by supercritical fluid technique. Eng Plast Appl 2012; 40(3): 109-13.
[28]
Zhao J, Zhao Q, Wang C, Guo B, Park CB, Wang G. High thermal insulation and compressive strength polypropylene foams fabricated by high-pressure foam injection molding and mold opening of nano-fibrillar composites. Mater Des 2017; 131: 1-11.
[http://dx.doi.org/10.1016/j.matdes.2017.05.093]
[http://dx.doi.org/10.1016/j.matdes.2017.05.093]
[29]
Zhiyun Y. Study on technology of polylactide continuous extrusion foaming with supercritical CO2 Taiyuan University of Technology,
Taiyuan, China, May, 2014.
[30]
Jian Y, Jiasong H. Fundamental issues for microfoaming polymers with supercritical CO2 technology. Sci China Chem 2010; 40(1): 1-15.
[31]
Nofar M, Park CB. Poly (lactic acid) foaming. Prog Polym Sci 2014; 39(10): 1721-41.
[http://dx.doi.org/10.1016/j.progpolymsci.2014.04.001]
[http://dx.doi.org/10.1016/j.progpolymsci.2014.04.001]
[32]
Kuang T, Chen F, Chang L, Zhao Y, Fu D, Gong X, et al. Facile preparation of open-cellular porous poly (l-lactic acid) scaffold by supercritical carbon dioxide foaming for potential tissue engineering applications. Chem Eng J 2017; 307: 1017-25.
[http://dx.doi.org/10.1016/j.cej.2016.09.023]
[http://dx.doi.org/10.1016/j.cej.2016.09.023]
[33]
Mohebbi A, Mighri F, Ajji A, Rodrigue D. Current issues and challenges in polypropylene foaming: A review. Cell Polym 2015; 34(6): 299-338.
[http://dx.doi.org/10.1177/026248931503400602]
[http://dx.doi.org/10.1177/026248931503400602]
[34]
Dai C, Zhang C, Huang W, Chang K-C, Lee LJ. Thermoplastic polyurethane microcellular fibers via supercritical carbon dioxide based extrusion foaming. Polym Eng Sci 2013; 53(11): 2360-9.
[http://dx.doi.org/10.1021/acs.iecr.7b01171]
[http://dx.doi.org/10.1021/acs.iecr.7b01171]
[35]
Jia Y, Bai S, Park CB, et al. Effect of boric acid on the foaming properties and cell structure of poly (vinyl alcohol) foam prepared by supercritical-CO2 thermoplastic extrusion foaming. Ind Eng Chem Res 2017; 56(23): 6655-63.
[http://dx.doi.org/10.1021/acs.iecr.7b01171]
[http://dx.doi.org/10.1021/acs.iecr.7b01171]
[36]
Demirtaş E, Özkan H, Nofar M. Continuous foam extrusion of High Impact Polystyrene (HIPS): Effects of processing parameters and blowing agent type and content. AIP Conf Proc 2019; 2055(1) 060011
[37]
Ding W, Jahani D, Chang E, Alemdar A, Park CB, Sain M. Development of PLA/cellulosic fiber composite foams using injection molding: Crystallization and foaming behaviors. Compos, Part A Appl Sci Manuf 2016; 83: 130-9.
[http://dx.doi.org/10.1016/j.compositesa.2015.10.003]
[http://dx.doi.org/10.1016/j.compositesa.2015.10.003]
[38]
Zhao J, Zhao Q, Wang L, Wang C, Guo B, Park CB, et al. Development of high thermal insulation and compressive strength BPP foams using mold-opening foam injection molding with in situ fibrillated PTFE fibers. Eur Polym J 2018; 98: 1-10.
[http://dx.doi.org/10.1016/j.eurpolymj.2017.11.001]
[http://dx.doi.org/10.1016/j.eurpolymj.2017.11.001]
[39]
Zhao B, Zhao C, Wang C, Park CB. Poly (vinylidene fluoride) foams: a promising low-k dielectric and heat-insulating material. J Mater Chem C Mater Opt Electron Devices 2018; 6(12): 3065-73.
[http://dx.doi.org/10.1039/C8TC00547H]
[http://dx.doi.org/10.1039/C8TC00547H]
[40]
Grignard B, Thomassin JM, Gennen S, Poussard L, Bonnaud L, Raquez J, et al. CO2-blown microcellular Non-Isocyanate Polyurethane (NIPU) foams: From bio-and CO2-sourced monomers to potentially thermal insulating materials. Green Chem 2016; 18(7): 2206-15.
[http://dx.doi.org/10.1039/C5GC02723C]
[http://dx.doi.org/10.1039/C5GC02723C]
[41]
Ameli A, Kazemi Y, Wang S, Park CB, Pötschke P. Process-microstructure-electrical conductivity relationships in injection-molded polypropylene/carbon nanotube nanocomposite foams. Compos, Part A Appl Sci Manuf 2017; 96: 28-36.
[http://dx.doi.org/10.1016/j.compositesa.2017.02.012]
[http://dx.doi.org/10.1016/j.compositesa.2017.02.012]
[42]
Gao CY, Leng XJ. A supercritical fluid-assisted polymer molding
foaming device. CN203282653 (2013)
[43]
Peng XF, Yan JP, Zhou NQ, Cao XW, Wen JS, Wen SP. A supercritical fluid microporous plastic extrusion molding device
and method. CN104085073 (2014).
[44]
Zhang XH. A supercritical fluid foaming device with a quicksealing
opening device. CN108453988 (2018).
[45]
Chen ZR, Bao JC, Liu ZF. A device for trapping and recycling
supercritical fluid in foaming process by molding. CN203472039 (2014).
[51]
Zhu JQ, Wu QS, Luo SY. A polymer foaming device and a
method of polymer foaming using the device. CN108215044 (2018).
[52]
Chen YR, Peng SP, Yeh SK, Chu CC, Guo WJ. Preparation of micro and nanocellular TPU-graphene nanocomposite foam by supercritical CO2 foaming. SPE ANTEC 2015; 2015: 2846-50.
[53]
Guo H, Nicolae A, Kumar V. Solid‐state microcellular and nanocellular polysulfone foams. J Polym Sci, B, Polym Phys 2015; 53(14): 975-85.
[http://dx.doi.org/10.1002/polb.23719]
[http://dx.doi.org/10.1002/polb.23719]
[54]
Kang TW, Peng SP, Yeh SK, Chu CC, Rwei SP, Guo WJ. Preparation of micro and nanocellular TPU foam by supercritical CO2 foaming-Effect of TPU hardness. Society of Plastics Engineers -
13th International Conference on Foam Materials and Technology FOAMS; Japan, Kyoto. August, 2015.
[55]
Xiang B, Jia Y, Lei Y, Zhang F, He J, Liu T, et al. Mechanical properties of microcellular and nanocellular silicone rubber foams obtained by supercritical carbon dioxide. Polym J 2019; 51(6): 559.
[http://dx.doi.org/10.1038/s41428-019-0175-6]
[http://dx.doi.org/10.1038/s41428-019-0175-6]
[56]
Zhi X, Liu J, Zhang HB, Hong S, Yu ZZ. Simultaneous enhancements in electrical conductivity and toughness of selectively foamed polycarbonate/polystyrene/carbon nanotube microcellular foams. Compos, Part B Eng 2018; 143: 161-7.
[http://dx.doi.org/10.1016/j.compositesb.2018.01.022]
[http://dx.doi.org/10.1016/j.compositesb.2018.01.022]
[57]
Gong P, Wang G, Tran MP, Buahom P, Zhai S, Li G, et al. Advanced bimodal polystyrene/multi-walled carbon nanotube nanocomposite foams for thermal insulation. Carbon 2017; 120: 1-10.
[http://dx.doi.org/10.1016/j.carbon.2017.05.029]
[http://dx.doi.org/10.1016/j.carbon.2017.05.029]
[58]
Lee L, Yang FR, Hsieh SF, Hsieh JH. Manufacturing method
of an ecofriendly foaming package material. US9056423 (2015).
[59]
Jeong C, Jeong D, Kim G. Foam molding method, foaming
agent and foamed plastic. EP2759389 (2015).
[60]
Chun JP, Kim HS, Choi SY, Kim YJ, Yun KC, Kim MK. Resin composition for foaming containing biodegradable
resin, and foam manufactured therefrom. US9200128 (2015).
[61]
Haraguchi K, Ohta H. Expandable polylactic acid resin particles,
expanded polylactic acid resin beads and molded article obtained
from expanded polylactic acid resin beads. US7863343 (2011).
[62]
Vannini C. Polylactic acid-based degradable foams and process for
their production. EP1528079 (2005).
[63]
Jiang XL. Preparation of polymer microporous foaming materials
by supercritical molding. CN102167840 (2011).
[64]
Satoshi Y, Atsushi Y, Hideto G. Process and device for producing
foamed molded object. EP3213898 (2017).
[65]
Xiaohai Z, Wentao Z. Coloured TPU foam material, preparation
method and use thereof, as well as method for preparing shaped
body, sheet and shoe material by using same. US20160311993 (2016).
[66]
Schlummer C. Apparatus and method for the introduction of a
foaming agent into a polymer melt. US8246237 (2012).
[67]
Tokiwa T, Gomibuchi M. Method for producing polypropylenebased
resin foamed blow-molded article. US9217067 (2015).
[69]
Huang XD, Peng YH. A supercritical fluid foamed polyolefin
material and its preparation method. CN1061468874 (2016).
[70]
Lars B, Lan B, Rene K, Jan V, Anja W. Process for dyeing
and foam thermoplastic polyurethane. WO2018091446 (2018).
[71]
Huang B, Wang R, Zhang S, Zhao W, Wang G. Extruded
foamed thermoplastic polyurethane elastomer particle and preparation
method therefor. EP3109281 (2015).
[72]
Kang CW, Huang CZ, Son JH. Foam sheet using cross-linked
polylactic acid, and preparation method thereof. US9512265 (2016).
[73]
Luo Z, Liu F. Method for physically foaming a polymer material
and foamed article. US20200002499 (2020).
[75]
Yu PF. Modified polyphenylene ether foam bead, preparation
method and application thereof. WO2019233017 (2019).
[76]
Xia L, Junsong L, Qiuyue J, Yuan Z, Guangxian L. Crystal
polymer foaming particle molding body and preparation method
thereof. CN107556513 (2018).
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