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Li L, Jin Z, Wang C, Wang YC. Valorization of Food Waste: Utilizing Natural Porous Materials Derived from Pomelo-Peel Biomass to Develop Triboelectric Nanogenerators for Energy Harvesting and Self-Powered Sensing. ACS APPLIED MATERIALS & INTERFACES 2024; 16:37806-37817. [PMID: 38988002 DOI: 10.1021/acsami.4c02319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
Food waste is an enormous challenge, with implications for the environment, society, and economy. Every year around the world, 1.3 billion tons of food are wasted or lost, and food waste-associated costs are around $2.6 trillion. Waste upcycling has been shown to mitigate these negative impacts. This study's optimized pomelo-peel biomass-derived porous material-based triboelectric nanogenerator (PP-TENG) had an open circuit voltage of 58 V and a peak power density of 254.8 mW/m2. As porous structures enable such triboelectric devices to respond sensitively to external mechanical stimuli, we tested our optimized PP-TENG's ability to serve as a self-powered sensor of biomechanical motions. As well as successfully harvesting sufficient mechanical energy to power light-emitting diodes and portable electronics, our PP-TENGs successfully monitored joint motions, neck movements, and gait patterns, suggesting their strong potential for use in healthcare monitoring and physical rehabilitation, among other applications. As such, the present work opens up various new possibilities for transforming a prolific type of food waste into value-added products and thus could enhance long-term sustainability while reducing such waste.
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Affiliation(s)
- Longwen Li
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Zhenhui Jin
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Chenxin Wang
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Yi-Cheng Wang
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Center for Digital Agriculture, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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2
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Lyu L, Bagchi M, Markoglou N, An C, Peng H, Bi H, Yang X, Sun H. Towards environmentally sustainable management: A review on the generation, degradation, and recycling of polypropylene face mask waste. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132566. [PMID: 37742382 DOI: 10.1016/j.jhazmat.2023.132566] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 08/31/2023] [Accepted: 09/14/2023] [Indexed: 09/26/2023]
Abstract
There has been a considerable increase in the use of face masks in the past years. Managing face mask waste has become a global concern, as the current waste management system is insufficient to deal with such a large quantity of solid waste. The drastic increase in quantity, along with the material's inability to degrade plastic components such as polypropylene, has led to a large accumulation of plastic waste, causing a series of environmental and ecological challenges. In addition, the growing use also imposes pressure on waste management methods such as landfill and incineration, raising concerns about high energy consumption, low value-added utilization, and the release of additional pollutants during the process. This article initially reviews the impact of mask-related plastic waste generation and degradation behavior in the natural environment. It then provides an overview of various recently developed methods for recycling face mask plastic waste. The article also offers forward-looking strategies and recommendations on face mask plastic waste management. The review aims to provide guidance on harnessing the complexities of mask waste and other medical plastic pollution issues, as well as improving the current waste management system's deficiencies and inefficiencies in tackling the growing plastic waste problem.
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Affiliation(s)
- Linxiang Lyu
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC H3G 1M8, Canada
| | - Monisha Bagchi
- Department Research and Development, Meltech Innovation Canada Inc., Medicom Group, Pointe-Claire, QC H9P 2Z2, Canada
| | - Nektaria Markoglou
- Department Research and Development, Meltech Innovation Canada Inc., Medicom Group, Pointe-Claire, QC H9P 2Z2, Canada
| | - Chunjiang An
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC H3G 1M8, Canada.
| | - He Peng
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC H3G 1M8, Canada
| | - Huifang Bi
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC H3G 1M8, Canada
| | - Xiaohan Yang
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC H3G 1M8, Canada
| | - Huijuan Sun
- Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
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In Situ Nanofibrillar Polypropylene-Based Composite Microcellular Foams with Enhanced Mechanical and Flame-Retardant Performances. Polymers (Basel) 2023; 15:polym15061497. [PMID: 36987279 PMCID: PMC10056583 DOI: 10.3390/polym15061497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 03/13/2023] [Accepted: 03/14/2023] [Indexed: 03/19/2023] Open
Abstract
With the increasing demand for plastic components, the development of lightweight, high strength and functionalized polypropylene (PP) from a cost-effective and environmentally friendly process is critical for resource conservation. In situ fibrillation (INF) and supercritical CO2 (scCO2) foaming technology were combined in this work to fabricate PP foams. Polyethylene terephthalate (PET) and poly(diaryloxyphosphazene)(PDPP) particles were applied to fabricate in situ fibrillated PP/PET/PDPP composite foams with enhanced mechanical properties and favorable flame-retardant performance. The existence of PET nanofibrils with a diameter of 270 nm were uniformly dispersed in PP matrix and served multiple roles by tuning melt viscoelasticity for improving microcellular foaming behavior, enhancing crystallization of PP matrix and contributing to improving the uniformity of PDPP’s dispersion in INF composite. Compared to pure PP foam, PP/PET(F)/PDPP foam exhibited refined cellular structures, thus the cell size of PP/PET(F)/PDPP foam was decreased from 69 to 23 μm, and the cell density increased from 5.4 × 106 to 1.8 × 108 cells/cm3. Furthermore, PP/PET(F)/PDPP foam showed remarkable mechanical properties, including a 975% increase in compressive stress, which was attributed to the physical entangled PET nanofibrils and refined cellular structure. Moreover, the presence of PET nanofibrils also improved the intrinsic flame-retardant nature of PDPP. The synergistical effect of the PET nanofibrillar network and low loading of PDPP additives inhibited the combustion process. These gathered advantages of PP/PET(F)/PDPP foam make it promising for lightweight, strong, and fire-retardant polymeric foams.
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Continuous extrusion foaming process of biodegradable nanocomposites based on poly(lactic acid)/carbonaceous nanoparticles with different geometric shapes: An insight into involved physical, chemical and rheological phenomena. J Appl Polym Sci 2023. [DOI: 10.1002/app.53822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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5
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Lai J, Huang F, Huang A, Liu T, Peng X, Wu J, Geng L. Foaming behavior of polyamide 1212 elastomers/polyurethane composites with improved melt strength and interfacial compatibility via chain extension. POLYM ENG SCI 2023. [DOI: 10.1002/pen.26265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Jun Lai
- Key Laboratory of Polymer Materials and Products of Universities in Fujian, Department of Materials Science and Engineering Fujian University of Technology Fuzhou China
| | - Feng Huang
- Key Laboratory of Polymer Materials and Products of Universities in Fujian, Department of Materials Science and Engineering Fujian University of Technology Fuzhou China
| | - An Huang
- Key Laboratory of Polymer Materials and Products of Universities in Fujian, Department of Materials Science and Engineering Fujian University of Technology Fuzhou China
| | - Tong Liu
- College of Material Science and Engineering Zhejiang University of Technology Hangzhou China
| | - Xiangfang Peng
- Key Laboratory of Polymer Materials and Products of Universities in Fujian, Department of Materials Science and Engineering Fujian University of Technology Fuzhou China
| | - Jianming Wu
- Key Laboratory of Polymer Materials and Products of Universities in Fujian, Department of Materials Science and Engineering Fujian University of Technology Fuzhou China
| | - Lihong Geng
- Key Laboratory of Polymer Materials and Products of Universities in Fujian, Department of Materials Science and Engineering Fujian University of Technology Fuzhou China
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Zhu X, Ren Q, Li W, Wu M, Weng Z, Wang J, Zheng W, Wang L. In situ nanofibrillar fully-biobased poly (lactic acid)/poly (ethylene 2,5-furandicarboxylate) composites with promoted crystallization kinetics, mechanical properties, and heat resistance. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.110172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Experimental and Finite Element Simulation of Polyolefin Elastomer Foams Using Real 3D Structures: Effect of Foaming Agent Content. Polymers (Basel) 2022; 14:polym14214692. [DOI: 10.3390/polym14214692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/26/2022] [Accepted: 10/29/2022] [Indexed: 11/06/2022] Open
Abstract
In this study, polyolefin elastomer (POE) foams were prepared without any curing agent using a single-step foaming technique. The effect of azodicarbonamide (ADC) content as a chemical foaming agent on the foams’ morphology and mechanical properties was studied using scanning electron microscopy (SEM), mechanical properties (tension and compression) and hardness. The results showed that increasing the ADC content from 2 to 3, 4 and 5 phr (parts per hundred rubber) decreased the foam density from 0.75 to 0.71, 0.65 and 0.61 g/cm3, respectively. The morphological analysis revealed that increasing the ADC content from 2 to 4 phr produced smaller cell sizes from 153 to 109 µm (29% lower), but a higher cell density from 103 to 591 cells/mm3 (470% higher). However, using 5 phr of ADC led to a larger cell size (148 µm) and lower cell density (483 cells/mm3) due to cell coalescence. The tensile modulus, strength at break, elongation and hardness properties continuously decreased by 28%, 21%, 16% and 14%, respectively, with increasing ADC content (2 to 5 phr). On the other hand, the compressive properties, including elastic modulus and compressive strength, increased by 20% and 64%, respectively, with increasing ADC content (2 to 5 phr). The tensile and compression tests revealed that the former is more dependent on foam density (foaming ratio), while the latter is mainly controlled by the cellular structure (cell size, cell density and internal gas pressure). In addition, 2D SEM images were used to simulate the foams’ real 3D structure, which was used in finite element methods (FEM) to simulate the stress–strain behavior of the samples at two levels: micro-scale and macro-scale. Finally, the FEM results were compared to the experimental data. Based on the information obtained, a good agreement between the macro-scale stress–strain behavior generated by the FEM simulations and experimental data was obtained. While the FEM results showed that the sample with 3 phr of ADC had the lowest micro-scale stress, the sample with 5 phr had the highest micro-scale stress due to smaller and larger cell sizes, respectively.
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Wang L, Zheng L, Zhou L, Shi M, Bi Z, Wang C, Wang D, Li Q. The distribution of electrospun polylactic acid in polycaprolactone matrix controlled by traction rate and its effect on the foamed porous tissue engineering scaffolds. POLYM ENG SCI 2022. [DOI: 10.1002/pen.26123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Lixia Wang
- School of Mechanics and Safety Engineering Zhengzhou University Zhengzhou China
- National Center for International Research of Micro‐Nano Molding Technology Zhengzhou University Zhengzhou China
| | - Lun Zheng
- School of Mechanics and Safety Engineering Zhengzhou University Zhengzhou China
- National Center for International Research of Micro‐Nano Molding Technology Zhengzhou University Zhengzhou China
| | - Lu Zhou
- School of Mechanics and Safety Engineering Zhengzhou University Zhengzhou China
- National Center for International Research of Micro‐Nano Molding Technology Zhengzhou University Zhengzhou China
| | - Miaolei Shi
- School of Mechanics and Safety Engineering Zhengzhou University Zhengzhou China
- National Center for International Research of Micro‐Nano Molding Technology Zhengzhou University Zhengzhou China
| | - Zhaojie Bi
- School of Mechanics and Safety Engineering Zhengzhou University Zhengzhou China
- National Center for International Research of Micro‐Nano Molding Technology Zhengzhou University Zhengzhou China
| | - Chen Wang
- School of Mechanics and Safety Engineering Zhengzhou University Zhengzhou China
- National Center for International Research of Micro‐Nano Molding Technology Zhengzhou University Zhengzhou China
| | - Dongfang Wang
- School of Mechanics and Safety Engineering Zhengzhou University Zhengzhou China
- National Center for International Research of Micro‐Nano Molding Technology Zhengzhou University Zhengzhou China
| | - Qian Li
- National Center for International Research of Micro‐Nano Molding Technology Zhengzhou University Zhengzhou China
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9
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He X, Guo F, Ge T, Tang K, Shi S, Geng M. Preparation and properties of carboxylated cellulose nanofibers/monomer casting nylon composites. POLYM ENG SCI 2022. [DOI: 10.1002/pen.26118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiaofeng He
- Department of Polymer Science and Engineering Shenyang University of Chemical Technology Shenyang China
- Liaoning Polymer Materials Engineering and Technology Research Center Shenyang University of Chemical Technology Shenyang China
| | - Fuqiang Guo
- Department of Polymer Science and Engineering Shenyang University of Chemical Technology Shenyang China
- Liaoning Polymer Materials Engineering and Technology Research Center Shenyang University of Chemical Technology Shenyang China
| | - Tiejun Ge
- Department of Polymer Science and Engineering Shenyang University of Chemical Technology Shenyang China
- Liaoning Polymer Materials Engineering and Technology Research Center Shenyang University of Chemical Technology Shenyang China
| | - Kaihong Tang
- Department of Polymer Science and Engineering Shenyang University of Chemical Technology Shenyang China
- Liaoning Polymer Materials Engineering and Technology Research Center Shenyang University of Chemical Technology Shenyang China
| | - Shengnan Shi
- Shenyang Institute of Industrial Technology Co, Ltd for Advanced Coating Materials Shenyang China
| | - Maofu Geng
- Department of Polymer Science and Engineering Shenyang University of Chemical Technology Shenyang China
- Liaoning Polymer Materials Engineering and Technology Research Center Shenyang University of Chemical Technology Shenyang China
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10
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Su Y, Huang P, Zhao Y, Zheng W, Lan X, Luo H, Chong Y, Lee PC, Xu L. Lightweight Polypropylene/Polylactic Acid Composite Foams with Controllable Hollow Radially Gradient Porous Structures for Oil/Water Separation. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yaozhuo Su
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Pengke Huang
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People’s Republic of China
| | - Yongqing Zhao
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People’s Republic of China
| | - Wenge Zheng
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoqin Lan
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People’s Republic of China
| | - Haibin Luo
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People’s Republic of China
| | - Yunkai Chong
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People’s Republic of China
| | - Patrick C. Lee
- Multifunctional Composites Manufacturing Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto, 5 King’s College Road, Toronto M5G3G8, Ontario, Canada
| | - Linqiong Xu
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, People’s Republic of China
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11
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Construction, Physical Properties and Foaming Behavior of High-Content Lignin Reinforced Low-Density Polyethylene Biocomposites. Polymers (Basel) 2022; 14:polym14132688. [PMID: 35808737 PMCID: PMC9269087 DOI: 10.3390/polym14132688] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/18/2022] [Accepted: 06/28/2022] [Indexed: 02/05/2023] Open
Abstract
Lignin was chemically modified with oligomeric polyethylene (oPE) to form oPE-grafted lignin (oPE-g-lignin) via lignin surface acylation and a radical coupling reaction with oPE. Then, pristine lignin and oPE-g-lignin were successfully compounded with low-density polyethylene (LDPE) through a typical compounding technique. Due to the oligomeric polyethylene chains grafted to the lignin’s surface, the interfacial adhesion between the lignin particles and the LDPE matrix was considerably better in the oPE-g-lignin/LDPE biocomposite than in the pristine-lignin/LDPE one. This demonstrated that oPE-g-lignin can serve as both a biodegradable reinforcing filler, which can be loaded with a higher lignin content at 50 wt-%, and a nucleating agent to increase the crystallization temperature and improve the tensile characteristics of its LDPE biocomposites. Moreover, the foamability of the lignin-reinforced LDPE biocomposites was studied in the presence of a chemical blowing agent (azodicarbonamide) with dicumyl peroxide; for an oPE-g-lignin content up to 20 wt-%, the cell size distribution was quite uniform, and the foam expansion ratios (17.69 ± 0.92) were similar to those of the neat LDPE foam (17.04 ± 0.44).
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12
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Chai J, Wang G, Zhang A, Dong G, Li S, Zhao J, Zhao G. Microcellular injection molded lightweight and tough poly (L-lactic acid)/in-situ polytetrafluoroethylene nanocomposite foams with enhanced surface quality and thermally-insulating performance. Int J Biol Macromol 2022; 215:57-66. [PMID: 35718146 DOI: 10.1016/j.ijbiomac.2022.06.091] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 06/11/2022] [Accepted: 06/11/2022] [Indexed: 01/13/2023]
Abstract
High-performance microcellular polymer foams have been widely used all over the world, while the excessive usage of petroleum-based polymers caused serious environmental problems. As the eco-friendly awareness is increasing significantly, poly (L-lactic acid) (PLLA), as a typical biomass polymer, has gradually attracted widespread attention. However, the slow crystallization and poor melt strength of PLLA lead to low foaming ability and thus limiting its industrial applications. Herein, a novel and scalable strategy by coupling in-situ fibrillation and mold-opening microcellular injection molding (MOMIM) was developed to fabricate lightweight and tough PLLA/polytetrafluoroethylene (PTFE) foams. Thanks to the reticulated in-situ PTFE nanofibrils with a diameter of 100-200 nm, the crystallization and viscoelasticity of PLLA were dramatically promoted, and further contributing to its foaming ability. The expansion ratio of the MOMIM PLLA/PTFE foam was increased by 86 % compared with the regular microcellular injection molded (RMIM) PLLA foam. Moreover, the lower foam density and the toughening effect of PTFE nanofibrils resulted in the outstanding ductility of the PLLA/PTFE foams, whose tensile elongation, flexural strength, and impact strength were maximally increased by 52 %, 28 %, and 48 %, compared with PLLA foams. More importantly, the thermally-insulating performance and surface quality of PLLA/PTFE foams were also greatly improved.
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Affiliation(s)
- Jialong Chai
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, Shandong 250061, China
| | - Guilong Wang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, Shandong 250061, China; School of Mechanical & Vehicle Engineering, Linyi University, Linyi, Shandong 276005, China.
| | - Aimin Zhang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, Shandong 250061, China
| | - Guiwei Dong
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, Shandong 250061, China; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China
| | - Shuai Li
- School of Mechanical & Vehicle Engineering, Linyi University, Linyi, Shandong 276005, China
| | - Jinchuan Zhao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, Shandong 250061, China.
| | - Guoqun Zhao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, Shandong 250061, China
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13
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Chai K, Xu Z, Chen D, Liu Y, Fang Y, Song Y. Effect of nano
TiO
2
on the cellular structure and mechanical properties of wood flour/polypropylene composite foams via mold‐opening foam injection molding. J Appl Polym Sci 2022. [DOI: 10.1002/app.52603] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Kun Chai
- Engineering Research Center of Advanced Wooden Materials (Ministry of Education) Northeast Forestry University Harbin China
| | - Zesheng Xu
- Engineering Research Center of Advanced Wooden Materials (Ministry of Education) Northeast Forestry University Harbin China
| | - Dong Chen
- Engineering Research Center of Advanced Wooden Materials (Ministry of Education) Northeast Forestry University Harbin China
| | - Yingtao Liu
- Engineering Research Center of Advanced Wooden Materials (Ministry of Education) Northeast Forestry University Harbin China
| | - Yiqun Fang
- Engineering Research Center of Advanced Wooden Materials (Ministry of Education) Northeast Forestry University Harbin China
| | - Yongming Song
- Engineering Research Center of Advanced Wooden Materials (Ministry of Education) Northeast Forestry University Harbin China
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Srinivas Sundarram S, Ibekwe N, Prado S, Rotonto C, Feeney S. Microwave foaming of carbon dioxide saturated poly lactic acid. POLYM ENG SCI 2022. [DOI: 10.1002/pen.25897] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
| | - Nwachukwu Ibekwe
- School of Engineering Fairfield University Fairfield Connecticut USA
| | - Stephanie Prado
- School of Engineering Fairfield University Fairfield Connecticut USA
| | - Clarissa Rotonto
- School of Engineering Fairfield University Fairfield Connecticut USA
| | - Sean Feeney
- School of Engineering Fairfield University Fairfield Connecticut USA
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15
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Yousfi M, Samuel C, Soulestin J, Lacrampe MF. Rheological Considerations in Processing Self-Reinforced Thermoplastic Polymer Nanocomposites: A Review. Polymers (Basel) 2022; 14:637. [PMID: 35160626 PMCID: PMC8839963 DOI: 10.3390/polym14030637] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 02/04/2022] [Accepted: 02/04/2022] [Indexed: 01/08/2023] Open
Abstract
The present review relates to the field of nanocomposite materials comprising a thermoplastic nanofibrillar phase dispersed in a matrix that is also thermoplastic. The fact of forming the nanofibrillar phase in situ during melt processing gives it the role of a reinforcing nanofiller for thermoplastic materials. This paper discusses the major factors influencing the formation of self-reinforced nanofibrillar polymer composite (NFC) materials throughout manufacturing steps. More specifically, the rheological considerations allowing the prediction of the in situ nanofibrillation during melt blending and post-processing as well as the methods of production of these polymer nanocomposites are described. The major challenges related to the future development in the field of NFCs are addressed. The concept of self-reinforced nanofibrillar polymer materials shows great potential in lightweight eco-design processes and represents a new approach to polymer nanocomposite recycling for a variety of industrial applications.
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Affiliation(s)
- Mohamed Yousfi
- Univ Lyon, CNRS, UMR 5223, Ingénierie des Matériaux Polymères, Université Claude Bernard Lyon1, INSA Lyon, Université Jean Monnet, F-69621 Villeurbanne, France
| | - Cédric Samuel
- IMT Nord Europe, Institut Mines-Télécom, Univ. Lille, Centre for Materials and Processes, F-59000 Lille, France; (C.S.); (J.S.); (M.-F.L.)
| | - Jérémie Soulestin
- IMT Nord Europe, Institut Mines-Télécom, Univ. Lille, Centre for Materials and Processes, F-59000 Lille, France; (C.S.); (J.S.); (M.-F.L.)
| | - Marie-France Lacrampe
- IMT Nord Europe, Institut Mines-Télécom, Univ. Lille, Centre for Materials and Processes, F-59000 Lille, France; (C.S.); (J.S.); (M.-F.L.)
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Farahani M, Jahani Y, Kakanejadifard A, Ohshima M. Self-Assembly of Temperature Sensitive Additives in Polypropylene Melt and Its Influence on Viscoelasticity. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c03927] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mina Farahani
- Faculty of Polymer Processing, Iran Polymer and Petrochemical Institute, Tehran 13115-14977, Iran
| | - Yousef Jahani
- Faculty of Polymer Processing, Iran Polymer and Petrochemical Institute, Tehran 13115-14977, Iran
| | - Ali Kakanejadifard
- Department of Chemistry, Faculty of Science, Lorestan University, Khorramabad 68151-44316, Iran
| | - Masahiro Ohshima
- Department of Chemical Engineering, KYOTO University, Kyoto 615-8530, Japan
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Kinked Bisamides as Efficient Supramolecular Foam Cell Nucleating Agents for Low-Density Polystyrene Foams with Homogeneous Microcellular Morphology. Polymers (Basel) 2021; 13:polym13071094. [PMID: 33808179 PMCID: PMC8036985 DOI: 10.3390/polym13071094] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 03/22/2021] [Accepted: 03/25/2021] [Indexed: 11/17/2022] Open
Abstract
Polystyrene foams have become more and more important owing to their lightweight potential and their insulation properties. Progress in this field is expected to be realized by foams featuring a microcellular morphology. However, large-scale processing of low-density foams with a closed-cell structure and volume expansion ratio of larger than 10, exhibiting a homogenous morphology with a mean cell size of approximately 10 µm, remains challenging. Here, we report on a series of 4,4′-diphenylmethane substituted bisamides, which we refer to as kinked bisamides, acting as efficient supramolecular foam cell nucleating agents for polystyrene. Self-assembly experiments from solution showed that these bisamides form supramolecular fibrillary or ribbon-like nanoobjects. These kinked bisamides can be dissolved at elevated temperatures in a large concentration range, forming dispersed nano-objects upon cooling. Batch foaming experiments using 1.0 wt.% of a selected kinked bisamide revealed that the mean cell size can be as low as 3.5 µm. To demonstrate the applicability of kinked bisamides in a high-throughput continuous foam process, we performed foam extrusion. Using 0.5 wt.% of a kinked bisamide yielded polymer foams with a foam density of 71 kg/m3 and a homogeneous microcellular morphology with cell sizes of ≈10 µm, which is two orders of magnitude lower compared to the neat polystyrene reference foam with a comparable foam density.
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Li S, Liao X, Liu F, Li G. The crystallization morphology and process of stereocomplex crystallites of polylactide under CO 2: the effect of H-bonding and chain diffusion. CrystEngComm 2021. [DOI: 10.1039/d1ce01109j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The crystallization of PLA SC under CO2 was in situ investigated for the first time.
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Affiliation(s)
- Shaojie Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Xia Liao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Feng Liu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Guangxian Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, China
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