51
|
Pham CT, Nguyen BT, Phan HTQ, Pham LH, Hoang CN, Nguyen NN, Lee P, Kang S, Kim J, Hoang D. Highly efficient fire retardant behavior, thermal stability, and physicomechanical properties of rigid polyurethane foam based on recycled poly(ethylene terephthalate). J Appl Polym Sci 2020. [DOI: 10.1002/app.49110] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Chi T. Pham
- University of Science, Vietnam National University Ho Chi Minh City Vietnam
| | - Binh T. Nguyen
- University of Science, Vietnam National University Ho Chi Minh City Vietnam
| | - Huong T. Q. Phan
- University of Science, Vietnam National University Ho Chi Minh City Vietnam
| | - Lam H. Pham
- University of Science, Vietnam National University Ho Chi Minh City Vietnam
| | - Cuong N. Hoang
- University of Science, Vietnam National University Ho Chi Minh City Vietnam
| | - Nguyen N. Nguyen
- Department of Chemical EngineeringPohang University of Science and Technology Pohang Korea
| | - Pyoung‐Chan Lee
- Lightweight Materials R&D CenterKorea Automotive Technology Institute Chungnam Korea
| | - Soo‐Jung Kang
- Department of Polymer Science and EngineeringSungkyunkwan University Suwon Korea
| | - Jinhwan Kim
- Department of Polymer Science and EngineeringSungkyunkwan University Suwon Korea
| | - DongQuy Hoang
- University of Science, Vietnam National University Ho Chi Minh City Vietnam
- Department of Polymer Science and EngineeringSungkyunkwan University Suwon Korea
| |
Collapse
|
52
|
Wu J, He Y, Yu Z. Failure mechanism of rigid polyurethane foam under high temperature vibration condition by experimental and finite element method. J Appl Polym Sci 2020. [DOI: 10.1002/app.48343] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jiacheng Wu
- Department of Materials ScienceFudan University Shanghai 200433 China
| | - Yannan He
- Department of Materials ScienceFudan University Shanghai 200433 China
| | - Zhiqiang Yu
- Department of Materials ScienceFudan University Shanghai 200433 China
| |
Collapse
|
53
|
A P/N‐containing flame retardant constructed by phosphaphenanthrene, phosphonate, and triazole and its flame retardant mechanism in reducing fire hazards of epoxy resin. J Appl Polym Sci 2020. [DOI: 10.1002/app.49090] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
54
|
Ma Z, Zhang X, Zhang X, Ahmed N, Fan H, Wan J, Bittencourt C, Li BG. Synthesis of CO 2-Derived, Siloxane-Functionalized Poly(ether carbonate)s and Waterborne Polyurethanes. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b06795] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Zhongzhu Ma
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Xianwei Zhang
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Xiaojing Zhang
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Numan Ahmed
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Hong Fan
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jintao Wan
- Engineering Research Center of Historical and Cultural Heritage Protection, Ministry of Education, Shaanxi Normal University, Xi’an 710062, China
| | - Carla Bittencourt
- Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons, Place du Parc 20, Mons B-7000, Belgium
| | - Bo-geng Li
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| |
Collapse
|
55
|
Wang Y, Qing Y, Sun Y, Zhu M, Dong S. A study on preparation of modified Graphene Oxide and flame retardancy of polystyrene composite microspheres. Des Monomers Polym 2020; 23:1-15. [PMID: 32127789 PMCID: PMC7034076 DOI: 10.1080/15685551.2020.1720934] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Accepted: 01/12/2020] [Indexed: 11/17/2022] Open
Abstract
In this paper, the ODOPM, a kind of 9, 10-dihydro-9-oxygen-heterooxy-10-phosphoro-10-oxygen (DOPO) derivative, was obtained by hydroxylation of DOPO. Further, a phosphorus nano-flame retardant (GO-ODOPM) was obtained by addition reaction with carboxylated Graphite Oxide (GO-COOH). And then Graphene Oxide/polystyrene (GO-ODOPM/PS) composite microspheres were obtained via suspension polymerization of styrene with GO-ODOPM. The decrease of the peak heat release rate (HRR) and total heat release rate (THR) for the GO-ODOPM/PS composite microspheres was obtained when the content of the additives was only 3.0 wt% is more than 36.2% and 33.6% compared with the pure PS microspheres, respectively. Thermogravimetric (TG), dynamic rheology and carbon residue analysis were used to study the flame-retardant mechanism of GO-ODOPM in PS microspheres. The results revealed that the addition of GO-ODOPM obviously reduced the fire hazard of polystyrene (PS) microspheres. Thus, this work provided a feasible method to design efficient flame retardants for enhancing fire safety of polymers.
Collapse
Affiliation(s)
- Yazhen Wang
- College of Chemical and Chemical Engineering, Qiqihar University, Qiqihar, China
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, Heilongjiang, China
- Heilongjiang Province Key Laboratory of Polymeric Composition Material, Qiqihar, China
- College of Materials Science and Engineering, Qiqihar University, Qiqihar, China
| | - Yingbo Qing
- College of Chemical and Chemical Engineering, Qiqihar University, Qiqihar, China
- Heilongjiang Province Key Laboratory of Polymeric Composition Material, Qiqihar, China
| | - Yu Sun
- College of Chemical and Chemical Engineering, Qiqihar University, Qiqihar, China
- Heilongjiang Province Key Laboratory of Polymeric Composition Material, Qiqihar, China
| | - Meng Zhu
- Heilongjiang Province Key Laboratory of Polymeric Composition Material, Qiqihar, China
- College of Materials Science and Engineering, Qiqihar University, Qiqihar, China
| | - Shaobo Dong
- Heilongjiang Province Key Laboratory of Polymeric Composition Material, Qiqihar, China
- College of Materials Science and Engineering, Qiqihar University, Qiqihar, China
| |
Collapse
|
56
|
Bio-Precipitation of Carbonate and Phosphate Minerals Induced by the Bacterium Citrobacter freundii ZW123 in an Anaerobic Environment. MINERALS 2020. [DOI: 10.3390/min10010065] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In this study, a facultative anaerobic strain isolated from marine sediments and identified as Citrobacter freundii, was used to induce the precipitation of carbonate and phosphate minerals in the laboratory under anaerobic conditions. This is the first time that the ability of C. freundii ZW123 to precipitate carbonate and phosphate minerals has been demonstrated. During the experiments, carbonic anhydrase, alkaline phosphatase and ammonium released by the bacteria not only promoted an increase in pH, but also drove the supersaturation and precipitation of carbonate and phosphate minerals. The predominant bio-mediated minerals precipitated at various Mg/Ca molar ratios were calcite, vaterite, Mg-rich calcite, monohydrocalcite and struvite. A preferred orientation towards struvite was observed. Scanning transmission electron microscopy (STEM) and elemental mapping showed the distribution of magnesium and calcium elements within Mg-rich calcite. Many organic functional groups, including C=O, C–O–C and C–O, were detected within the biominerals, and these functional groups were also identified in the associated extracellular polymeric substances (EPS). Fifteen kinds of amino acid were detected in the biotic minerals, almost identical to those of the EPS, indicating a close relationship between EPS and biominerals. Most amino acids are negatively charged and able to adsorb cations, providing an oversaturated microenvironment to facilitate mineral nucleation. The X-ray photoelectron spectroscopy (XPS) spectrum of struvite shows the presence of organic functional groups on the mineral surface, suggesting a role of the microorganism in struvite precipitation. The ZW123 bacteria provided carbon and nitrogen for the formation of the biotic minerals through their metabolism, which further emphasizes the close relationship between biominerals and the microorganisms. Thermal studies showed the enhanced thermal stability of biotic minerals, perhaps due to the participation of the bacteria ZW123. The presence of amino acids such as Asp and Glu may explain the high magnesium content of some calcites. Molecular dynamics simulations demonstrated that the morphological change and preferred orientation were likely caused by selective adsorption of EPS onto the various struvite crystal surfaces. Thus, this study shows the significant role played by C. freundii ZW123 in the bioprecipitation of carbonate and phosphate minerals and provides some insights into the processes involved.
Collapse
|
57
|
Lee JH, Park SH, Kim SH. Fabrication of bio-based polyurethane nanofibers incorporated with a triclosan/cyclodextrin complex for antibacterial applications. RSC Adv 2020; 10:3450-3458. [PMID: 35497710 PMCID: PMC9048417 DOI: 10.1039/c9ra06992e] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 01/08/2020] [Indexed: 12/28/2022] Open
Abstract
A hybrid polyol consisting of a polycaprolactone diol/castor oil mixture was used to synthesize a biopolyurethane (BPU) that has a dendritic point but is soluble in organic solvents. The chemical structure of the obtained BPU was determined using Fourier transform infrared (FT-IR) spectroscopy and proton nuclear magnetic resonance spectroscopy. The mechanical properties of the electrospun BPU nanofiber were confirmed using a universal testing machine. To enhance the solubility of triclosan (TR), TR–cyclodextrin (CD) complexes were prepared. αCD, βCD, and γCD were used to study the formation of the TR–CD complexes using a coprecipitation technique. The results showed that TR did not form a complex with αCD, whereas it forms complexes partially with βCD and completely with γCD. These findings are supported by FT-IR, differential scanning calorimetry, and X-ray diffraction analyses. The electrospun BPU/TR–CD nanofibers were investigated in terms of morphology, releasing behavior, and antibacterial tests. The BPU/TR–γCD nanofiber shows better antibacterial activity than the others. The results obtained in this study are expected to broaden the range of biobased polyurethane applications where antibacterial properties are required. Bio-polyurethane nanofibers containing triclosan–cyclodextrin complexes to enhance antibacterial properties were prepared using an electrospinning method.![]()
Collapse
Affiliation(s)
- Joo Hyung Lee
- Department of Organic and Nano Engineering
- College of Engineering
- Hanyang University
- Seoul
- Korea
| | | | - Seong Hun Kim
- Department of Organic and Nano Engineering
- College of Engineering
- Hanyang University
- Seoul
- Korea
| |
Collapse
|
58
|
Tang G, Liu X, Zhou L, Zhang P, Deng D, Jiang H. Steel slag waste combined with melamine pyrophosphate as a flame retardant for rigid polyurethane foams. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2019.10.020] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
59
|
Cheng J, Wang H, Wang X, Li S, Zhou Y, Zhang F, Wang Y, Qu W, Wang D, Pang X. Effects of flame‐retardant ramie fiber on enhancing performance of the rigid polyurethane foams. POLYM ADVAN TECHNOL 2019. [DOI: 10.1002/pat.4741] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jiaji Cheng
- College of Environment and Safety EngineeringQingdao University of Science and Technology Qingdao 266042 China
- Key Laboratory of Gas and Fire Control for Coal Mines (China University of Mining and Technology)Ministry of Education Xuzhou 221116 China
- Shandong Engineering Research Center for Marine Environment Corrosion and Safety ProtectionQingdao University of Science and Technology Qingdao 266042 China
- Shandong Engineering Technology Research Center for Advanced CoatingQingdao University of Science and Technology Qingdao 266042 China
| | - Haodong Wang
- College of Environment and Safety EngineeringQingdao University of Science and Technology Qingdao 266042 China
| | - Xu Wang
- College of Environment and Safety EngineeringQingdao University of Science and Technology Qingdao 266042 China
| | - Shaoxiang Li
- College of Environment and Safety EngineeringQingdao University of Science and Technology Qingdao 266042 China
- Shandong Engineering Research Center for Marine Environment Corrosion and Safety ProtectionQingdao University of Science and Technology Qingdao 266042 China
- Shandong Engineering Technology Research Center for Advanced CoatingQingdao University of Science and Technology Qingdao 266042 China
| | - Yue Zhou
- College of Environment and Safety EngineeringQingdao University of Science and Technology Qingdao 266042 China
- Shandong Engineering Research Center for Marine Environment Corrosion and Safety ProtectionQingdao University of Science and Technology Qingdao 266042 China
- Shandong Engineering Technology Research Center for Advanced CoatingQingdao University of Science and Technology Qingdao 266042 China
| | - Feng Zhang
- College of Environment and Safety EngineeringQingdao University of Science and Technology Qingdao 266042 China
| | - Yong Wang
- College of Environment and Safety EngineeringQingdao University of Science and Technology Qingdao 266042 China
| | - Wenjuan Qu
- College of Environment and Safety EngineeringQingdao University of Science and Technology Qingdao 266042 China
- Shandong Engineering Research Center for Marine Environment Corrosion and Safety ProtectionQingdao University of Science and Technology Qingdao 266042 China
- Shandong Engineering Technology Research Center for Advanced CoatingQingdao University of Science and Technology Qingdao 266042 China
| | - Dong Wang
- College of Environment and Safety EngineeringQingdao University of Science and Technology Qingdao 266042 China
- Shandong Engineering Research Center for Marine Environment Corrosion and Safety ProtectionQingdao University of Science and Technology Qingdao 266042 China
- Shandong Engineering Technology Research Center for Advanced CoatingQingdao University of Science and Technology Qingdao 266042 China
| | - Xiujiang Pang
- Shandong Engineering Research Center for Marine Environment Corrosion and Safety ProtectionQingdao University of Science and Technology Qingdao 266042 China
- Shandong Engineering Technology Research Center for Advanced CoatingQingdao University of Science and Technology Qingdao 266042 China
| |
Collapse
|
60
|
Quartinello F, Kremser K, Vecchiato S, Schoen H, Vielnascher R, Ploszczanski L, Pellis A, Guebitz GM. Increased Flame Retardancy of Enzymatic Functionalized PET and Nylon Fabrics via DNA Immobilization. Front Chem 2019; 7:685. [PMID: 31696105 PMCID: PMC6818624 DOI: 10.3389/fchem.2019.00685] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 10/04/2019] [Indexed: 11/13/2022] Open
Abstract
Poly(ethylene terephthalate) (PET) and nylon find their main applications in working clothes, domestic furniture and as indoor decoration (curtains and carpets). The increasing attention on healthy lifestyle, together with protection and safety, gained a strong interest in today's society. In this context, reducing the flammability of textiles has been tackled by designing flame retardants (FRs) able to suppress or delay the flame propagation. Commercially available FRs for textiles often consist of brominated, chlorinated and organo-phosphorus compounds, which are considered a great concern for human health and for the environment. In this study, Deoxyribose Nucleic Acid (DNA) was investigated as a green and eco-friendly alternative to halogen-containing FRs. DNA is in fact able to provide flame retardant properties due to its intrinsically intumescent building blocks (deoxyribose, phosphoric-polyphosphoric acid, and nitrogen-containing bases). In a first step, anchor groups (i.e., carboxyl groups) for subsequent coupling of DNA were introduced to PET and nylon-6 fabrics via limited surface hydrolysis with Humicola insolens cutinase (HiC). Released monomer/oligomers were measured via HPLC (1 mM of BHET for PET and 0.07 mM of caprolactam from nylon after 72 h). In a next step, DNA immobilization on the activated polymers was studied by using three different coupling systems, namely: EDC/NHS, dopamine, and tyrosine. DNA coupling was confirmed via FT-IR that showed typical bands at 1,220, 970, and 840 cm−1. The tyrosine/DNA coupling on nylon fabrics resulted to be the most effective as certified by the lowest burning rate and total burning time (35 s, 150 mm, and 4.3 mm*s−1 for the blank and 3.5 s, 17.5 mm, and 5 mm* s−1 for nylon/tyrosine/DNA) which was also confirmed by FT-IR and ESEM/EDS measurements. Thermogravimetric analysis (TGA) further confirmed that tyrosine/DNA coated nylon showed a lower thermal degradation between 450 and 625°C when compared to the untreated samples.
Collapse
Affiliation(s)
- Felice Quartinello
- Department for Agrobiotechnology (IFA-Tulln), Institute for Environmental Biotechnology, University of Natural Resources and Life Sciences, Vienna (BOKU), Vienna, Austria
| | - Klemens Kremser
- Department for Agrobiotechnology (IFA-Tulln), Institute for Environmental Biotechnology, University of Natural Resources and Life Sciences, Vienna (BOKU), Vienna, Austria
| | - Sara Vecchiato
- Division Enzymes & Polymers, Austrian Centre of Industrial Biotechnology, Vienna, Austria
| | - Herta Schoen
- Division Enzymes & Polymers, Austrian Centre of Industrial Biotechnology, Vienna, Austria
| | - Robert Vielnascher
- Department for Agrobiotechnology (IFA-Tulln), Institute for Environmental Biotechnology, University of Natural Resources and Life Sciences, Vienna (BOKU), Vienna, Austria.,Division Enzymes & Polymers, Austrian Centre of Industrial Biotechnology, Vienna, Austria
| | - Leon Ploszczanski
- Department of Material Sciences and Process Engineering (MAP), Institute of Physics and Material Science (IPM), Vienna, Austria
| | - Alessandro Pellis
- Department for Agrobiotechnology (IFA-Tulln), Institute for Environmental Biotechnology, University of Natural Resources and Life Sciences, Vienna (BOKU), Vienna, Austria.,Department of Chemistry, University of York, York, United Kingdom
| | - Georg M Guebitz
- Department for Agrobiotechnology (IFA-Tulln), Institute for Environmental Biotechnology, University of Natural Resources and Life Sciences, Vienna (BOKU), Vienna, Austria.,Division Enzymes & Polymers, Austrian Centre of Industrial Biotechnology, Vienna, Austria
| |
Collapse
|
61
|
Lu S, Zhou W, Yang M, Chen G, Hong W, Yu D, Zheng Z, Chen X. Preparation and flame-retardant mechanism of polyheptazine/PA6 nanocmposites. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121810] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
62
|
Highly Effective Flame-Retardant Rigid Polyurethane Foams: Fabrication and Applications in Inhibition of Coal Combustion. Polymers (Basel) 2019; 11:polym11111776. [PMID: 31671837 PMCID: PMC6918278 DOI: 10.3390/polym11111776] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 10/17/2019] [Accepted: 10/24/2019] [Indexed: 11/28/2022] Open
Abstract
The extemporaneous combustion of coal remains a major threat to safety in coal mines because such fire accidents result in casualties and significant property loss, as well as serious environmental pollution. This work proposed the fabrication of flame-retardant rigid polyurethane foam (RPUF) containing expandable graphite as char expander/sealant with melamine phosphosphate and 2-carboxyethyl (phenyl)phosphinic acid as char inducer and radical trapping agents. The as-prepared RPUF successfully inhibited coal combustion by forming thermally stable high graphitic content expandable intumescent char sealing over the coal. The RPUF achieved UL-94 V-0 rating in addition to significant reductions in peak heat release, total heat release, and CO and CO2 yields. The external and the internal residual char structure was studied by X-ray photoelectron spectra, Raman spectroscopy, and real-time Fourier transform infrared spectra techniques, and a flame-retardant mode of action has been proposed. This work provides important insight into a facile fabrication of highly efficient and economical flame-retardant RPUF to inhibit the spontaneous combustion of coal.
Collapse
|
63
|
|
64
|
An effective mono-component intumescent flame retardant for the enhancement of water resistance and fire safety of thermoplastic polyurethane composites. Polym Degrad Stab 2019. [DOI: 10.1016/j.polymdegradstab.2019.07.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
65
|
Zhang G, Wu Y, Chen W, Han D, Lin X, Xu G, Zhang Q. Open-Cell Rigid Polyurethane Foams from Peanut Shell-Derived Polyols Prepared under Different Post-Processing Conditions. Polymers (Basel) 2019; 11:polym11091392. [PMID: 31450807 PMCID: PMC6780715 DOI: 10.3390/polym11091392] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 08/17/2019] [Accepted: 08/21/2019] [Indexed: 11/21/2022] Open
Abstract
Bio-based polyurethane materials with abundant open-cells have wide applications because of their biodegradability for addressing the issue of environmental conservation. In this work, open-cell rigid polyurethane foams (RPUFs) were prepared with bio-based polyols (BBPs) derived from the liquefaction of peanut shells under different post-processing conditions. The influences of the neutralization procedure and filtering operation for BBPs on the foaming behaviors, density, dimensional stability, water absorption, swelling ratio, compressive strength, and microstructure of RPUFs were investigated intensively. The results revealed that a small amount of sulfuric acid in the polyols exhibited a great impact on physical and chemical properties of RPUFs while the filtering operation for those polyols had a slight effect on the above properties. The RPUFs prepared from neutralized BBPs possessed higher water absorption, preferable dimensional stability and compression strength than that fabricated from the non-neutralized BBPs. Moreover, the prepared RPUFs exhibited preferable water absorption of 636–777%, dimensional stability of <0.5%, compressive strength of >200 KPa, lower swelling rate of ca. 1%, as well as uniform cell structure with superior open-cell rate, implying potential applications in floral foam.
Collapse
Affiliation(s)
- Guangyu Zhang
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Yumin Wu
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Weisheng Chen
- Shandong Provincial Key Laboratory of Biochemical Engineering, College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Dezhi Han
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
| | - Xiaoqi Lin
- Shandong Provincial Key Laboratory of Biochemical Engineering, College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Gongchen Xu
- Shandong Provincial Key Laboratory of Biochemical Engineering, College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Qinqin Zhang
- Shandong Provincial Key Laboratory of Biochemical Engineering, College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
| |
Collapse
|
66
|
Li L, Chen Y, Wu X, Xu B, Qian L. Bi‐phase flame‐retardant effect of dimethyl methylphosphonate and modified ammonium polyphosphate on rigid polyurethane foam. POLYM ADVAN TECHNOL 2019. [DOI: 10.1002/pat.4702] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Linshan Li
- School of Materials Science and Mechanical EngineeringBeijing Technology and Business University Beijing 100048 China
- Engineering Laboratory of Non‐Halogen Flame Retardants for Polymers Beijing 100048 China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics Beijing 100048 China
| | - Yajun Chen
- School of Materials Science and Mechanical EngineeringBeijing Technology and Business University Beijing 100048 China
- Engineering Laboratory of Non‐Halogen Flame Retardants for Polymers Beijing 100048 China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics Beijing 100048 China
| | - Xingde Wu
- School of Materials Science and Mechanical EngineeringBeijing Technology and Business University Beijing 100048 China
- Engineering Laboratory of Non‐Halogen Flame Retardants for Polymers Beijing 100048 China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics Beijing 100048 China
| | - Bo Xu
- School of Materials Science and Mechanical EngineeringBeijing Technology and Business University Beijing 100048 China
- Engineering Laboratory of Non‐Halogen Flame Retardants for Polymers Beijing 100048 China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics Beijing 100048 China
| | - Lijun Qian
- School of Materials Science and Mechanical EngineeringBeijing Technology and Business University Beijing 100048 China
- Engineering Laboratory of Non‐Halogen Flame Retardants for Polymers Beijing 100048 China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics Beijing 100048 China
| |
Collapse
|
67
|
Lu Z, Feng W, Kang X, Wang J, Xu H, Wang Y, Liu B, Fang X, Ding T. Synthesis of siloxane‐containing benzoxazine and its synergistic effect on flame retardancy of polyoxymethylene. POLYM ADVAN TECHNOL 2019. [DOI: 10.1002/pat.4698] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zhehong Lu
- Institute of Functional Polymer Composites, College of Chemistry and Chemical EngineeringHenan University Kaifeng China
- Henan Engineering Laboratory of Flame‐Retardant and Functional MaterialsHenan University Kaifeng China
| | - Weili Feng
- Institute of Functional Polymer Composites, College of Chemistry and Chemical EngineeringHenan University Kaifeng China
- Henan Engineering Laboratory of Flame‐Retardant and Functional MaterialsHenan University Kaifeng China
| | - Xinglong Kang
- Institute of Functional Polymer Composites, College of Chemistry and Chemical EngineeringHenan University Kaifeng China
- Henan Engineering Laboratory of Flame‐Retardant and Functional MaterialsHenan University Kaifeng China
| | - Junliang Wang
- Henan Engineering Laboratory of Flame‐Retardant and Functional MaterialsHenan University Kaifeng China
| | - Hao Xu
- Henan Engineering Laboratory of Flame‐Retardant and Functional MaterialsHenan University Kaifeng China
| | - Yanpeng Wang
- Institute of Functional Polymer Composites, College of Chemistry and Chemical EngineeringHenan University Kaifeng China
- Henan Engineering Laboratory of Flame‐Retardant and Functional MaterialsHenan University Kaifeng China
| | - Baoying Liu
- Institute of Functional Polymer Composites, College of Chemistry and Chemical EngineeringHenan University Kaifeng China
- Henan Engineering Laboratory of Flame‐Retardant and Functional MaterialsHenan University Kaifeng China
| | - Xiaomin Fang
- Henan Engineering Laboratory of Flame‐Retardant and Functional MaterialsHenan University Kaifeng China
| | - Tao Ding
- Henan Engineering Laboratory of Flame‐Retardant and Functional MaterialsHenan University Kaifeng China
| |
Collapse
|
68
|
Chen Z, Yu Y, Zhang Q, Chen Z, Chen T, Jiang J. Preparation of phosphorylated chitosan‐coated carbon microspheres as flame retardant and its application in unsaturated polyester resin. POLYM ADVAN TECHNOL 2019. [DOI: 10.1002/pat.4625] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Zhongwei Chen
- College of Safety Science and EngineeringNanjing Tech University Nanjing China
| | - Yuan Yu
- College of Safety Science and EngineeringNanjing Tech University Nanjing China
- Jiangsu Key Laboratory of Hazardous Chemicals Safety and ControlNanjing Tech University Nanjing China
| | - Qingwu Zhang
- College of Safety Science and EngineeringNanjing Tech University Nanjing China
| | - Zhiquan Chen
- College of Safety Science and EngineeringNanjing Tech University Nanjing China
| | - Tingting Chen
- College of Safety Science and EngineeringNanjing Tech University Nanjing China
| | - Juncheng Jiang
- College of Safety Science and EngineeringNanjing Tech University Nanjing China
- Jiangsu Key Laboratory of Hazardous Chemicals Safety and ControlNanjing Tech University Nanjing China
| |
Collapse
|
69
|
Chen Y, Luo Y, Guo X, Chen L, Xu T, Jia D. Structure and Flame-Retardant Actions of Rigid Polyurethane Foams with Expandable Graphite. Polymers (Basel) 2019; 11:E686. [PMID: 30988268 PMCID: PMC6523558 DOI: 10.3390/polym11040686] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 04/02/2019] [Accepted: 04/12/2019] [Indexed: 11/18/2022] Open
Abstract
In this paper, rigid polyurethane foams that were filled with expandable graphite (RPUF/EG) composites were prepared by the liquid blending method, and then the structure and flame retardancy performance of materials were investigated through optical microscope, scanning electron microscope, limit oxygen index, cone calorimeter, thermogravimetric analysis coupled to fourier transform infrared spectrum, and X-ray photoelectron spectroscopy. The results showed that a large number of EG could be good to the exhibition of flame retardancy of RPUF, where the optimal material was found at loading 15 phr EG that showed an increased limit oxygen index value and a decreased calorific or fuming value. TGA coupled FTIR and XPS revealed that EG could disassembled before RPUF under heating treatment, and it could form a pyknotic and enahnced residual carbon layer on RPUF surface after the fire, which restricted the transfer of gas, like oxygen or heat into PU matrix, finally resulting in the promotion of flame retardancy of RPUF.
Collapse
Affiliation(s)
- Yongjun Chen
- Key Lab of Guangdong High Property and Functional Macromolecular Materials, Department of Polymer Materials and Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Yuanfang Luo
- Key Lab of Guangdong High Property and Functional Macromolecular Materials, Department of Polymer Materials and Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Xiaohui Guo
- Key Lab of Guangdong High Property and Functional Macromolecular Materials, Department of Polymer Materials and Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Lijuan Chen
- Key Lab of Guangdong High Property and Functional Macromolecular Materials, Department of Polymer Materials and Engineering, South China University of Technology, Guangzhou 510640, China.
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Department of Polymeric Material and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China.
| | - Tiwen Xu
- Key Lab of Guangdong High Property and Functional Macromolecular Materials, Department of Polymer Materials and Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Demin Jia
- Key Lab of Guangdong High Property and Functional Macromolecular Materials, Department of Polymer Materials and Engineering, South China University of Technology, Guangzhou 510640, China.
| |
Collapse
|
70
|
Density Effect on Flame Retardancy, Thermal Degradation, and Combustibility of Rigid Polyurethane Foam Modified by Expandable Graphite or Ammonium Polyphosphate. Polymers (Basel) 2019; 11:polym11040668. [PMID: 30979071 PMCID: PMC6523672 DOI: 10.3390/polym11040668] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 04/08/2019] [Accepted: 04/08/2019] [Indexed: 12/02/2022] Open
Abstract
The current study aims at comparatively investigating the effect of apparent density on flame retardancy, thermal degradation and combustion behaviors of rigid polyurethane foam (RPUF), RPUF/ expandable graphite (EG) and RPUF/ ammonium polyphosphate (APP). A series of RPUF, RPUF/EG and RPUF/APP samples with different apparent densities (30, 60 and 90 kg/m3) were prepared. The flame retardancy, thermal degradation, and combustion behaviors of each sample were investigated. Limiting oxygen index (LOI) results indicated that increasing apparent density was beneficial to the flame retardancy of all foam systems. The effect of apparent density on the enhancement of flame retardancy followed the sequence of RPUF < RPUF/APP < RPUF/EG. Thermogravimetric analysis (TGA) results showed that an increase in the apparent density can cause more weight loss in the first degradation stage and less weight loss in the second degradation stage for all foam systems. The combustion behaviors also showed significant differences. The samples with a higher apparent density showed a longer duration of heat release and higher total heat release (THR). The findings in this study demonstrated that apparent density played an important role in flame retardancy, thermal degradation, and combustion behaviors of RPUF, which must be paid more attention in the studies of flame-retardant RPUF.
Collapse
|
71
|
Jin X, Cui S, Sun S, Tian Y, Lv F, Gu X, Li H, Sun J, Zhang S, Bourbigot S. A new approach on improving the fire resistance of polyamide 11 by incorporating sulfur‐based flame retardant. POLYM ADVAN TECHNOL 2019. [DOI: 10.1002/pat.4591] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xiaodong Jin
- Collage of Materials Science and EngineeringBeijing University of Technology Beijing China
- Beijing Key Laboratory of Advanced Functional Polymer CompositesBeijing University of Chemical Technology Beijing China
| | - Suping Cui
- Collage of Materials Science and EngineeringBeijing University of Technology Beijing China
| | - Shibing Sun
- Collage of Materials Science and EngineeringBeijing University of Technology Beijing China
| | - Yingliang Tian
- Collage of Materials Science and EngineeringBeijing University of Technology Beijing China
| | - Feng Lv
- Collage of Materials Science and EngineeringBeijing University of Technology Beijing China
| | - Xiaoyu Gu
- Beijing Key Laboratory of Advanced Functional Polymer CompositesBeijing University of Chemical Technology Beijing China
| | - Hongfei Li
- Beijing Key Laboratory of Advanced Functional Polymer CompositesBeijing University of Chemical Technology Beijing China
| | - Jun Sun
- Beijing Key Laboratory of Advanced Functional Polymer CompositesBeijing University of Chemical Technology Beijing China
| | - Sheng Zhang
- Beijing Key Laboratory of Advanced Functional Polymer CompositesBeijing University of Chemical Technology Beijing China
| | | |
Collapse
|
72
|
Design of polyurethane fibers: Relation between the spinning technique and the resulting fiber topology. J Appl Polym Sci 2019. [DOI: 10.1002/app.47706] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
73
|
Qi H, Ma R, Shi C, Huang Z, Liu S, Sun L, Hu T. Novel low-cost carboxymethyl cellulose microspheres with excellent fertilizer absorbency and release behavior for saline-alkali soil. Int J Biol Macromol 2019; 131:412-419. [PMID: 30853583 DOI: 10.1016/j.ijbiomac.2019.03.047] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 03/06/2019] [Accepted: 03/06/2019] [Indexed: 12/29/2022]
Abstract
Saline-alkali soil and fertilizer loss severely restrict agriculture on the Songnen Plain in China. To resolve this problem, carboxymethyl cellulose immobilized slow-release fertilizer microspheres (CFM) with homogeneity pore structure, high porosity, biodegradable biological macromolecules and excellent fertilizer absorbency were synthesized by the combination of inverse emulsion polymerization and microfluidic method. By optimizing the synthesis conditions, the water absorption of CFM reached 8725 g g-1 in deionized water. The absorbency behaviors of CFM were highly sensitive to pH, ionic strength, and ionic species. In 5 g L-1 urea solution, the adsorption capacity of CFM was 3342.84 g g-1. The CFM showed excellent urea retention at 80 °C for 5 h and sustained release performance in soil. Besides, degradation rate of CFM was closed to 98.2% in Aspergillus niger at the third day. CFM had the advantages of high pH sensitivity, salt resistance, and good fertilizer absorbency and retention. Therefore, it will be prospecting fertilizer sustained release agent in agriculture.
Collapse
Affiliation(s)
- Houjuan Qi
- Material Science and Engineering College, Northeast Forestry University, Harbin 150040, China
| | - Rongxiu Ma
- Material Science and Engineering College, Northeast Forestry University, Harbin 150040, China
| | - Cai Shi
- Material Science and Engineering College, Northeast Forestry University, Harbin 150040, China
| | - Zhanhua Huang
- Material Science and Engineering College, Northeast Forestry University, Harbin 150040, China.
| | - Shouxin Liu
- Material Science and Engineering College, Northeast Forestry University, Harbin 150040, China
| | - Long Sun
- School of Forestry, Northeast Forestry University, Harbin 150040, China.
| | - Tongxin Hu
- School of Forestry, Northeast Forestry University, Harbin 150040, China
| |
Collapse
|
74
|
Zhan Y, Du S, He M, Zhang D, Liu Y, Li L. Enhancing the Interfacial Properties of Composites by Grafting Polyethylene Glycol and Polyvinyl Alcohol Onto a
CF
Surface. POLYM ENG SCI 2019. [DOI: 10.1002/pen.25073] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yi‐Kai Zhan
- School of Materials Science and Metallurgical EngineeringGuizhou University Guiyang, 550025 China
| | - Shuai Du
- School of Materials Science and Metallurgical EngineeringGuizhou University Guiyang, 550025 China
- National Engineering Research Center for Compounding and Modification of Polymeric Materials Guiyang, 550014 China
| | - Min He
- School of Materials Science and Metallurgical EngineeringGuizhou University Guiyang, 550025 China
- National Engineering Research Center for Compounding and Modification of Polymeric Materials Guiyang, 550014 China
| | - Dao‐Hai Zhang
- School of Materials Science and Metallurgical EngineeringGuizhou University Guiyang, 550025 China
- National Engineering Research Center for Compounding and Modification of Polymeric Materials Guiyang, 550014 China
| | - Yu‐Fei Liu
- School of Materials Science and Metallurgical EngineeringGuizhou University Guiyang, 550025 China
- National Engineering Research Center for Compounding and Modification of Polymeric Materials Guiyang, 550014 China
| | - Li‐Ping Li
- School of Materials Science and Metallurgical EngineeringGuizhou University Guiyang, 550025 China
| |
Collapse
|
75
|
Ammonium polyphosphate modified with β-cyclodextrin crosslinking rigid polyurethane foam: Enhancing thermal stability and suppressing flame spread. Polym Degrad Stab 2019. [DOI: 10.1016/j.polymdegradstab.2019.01.024] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
76
|
Akdogan E, Erdem M, Ureyen ME, Kaya M. Rigid polyurethane foams with halogen‐free flame retardants: Thermal insulation, mechanical, and flame retardant properties. J Appl Polym Sci 2019. [DOI: 10.1002/app.47611] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Emre Akdogan
- Department of ChemistryEskisehir Technical University, Yunus Emre Campus, 26480 Eskisehir Turkey
| | - Murat Erdem
- Department of ChemistryEskisehir Technical University, Yunus Emre Campus, 26480 Eskisehir Turkey
| | - Mustafa Erdem Ureyen
- Civil Aviation Research CenterAnadolu University, Iki Eylul Campus, 26480 Eskisehir Turkey
- Faculty of Architecture and DesignEskisehir Technical University, Yunus Emre Campus, 26470 Eskisehir Turkey
| | - Metin Kaya
- Arçelik A.Ş. Refrigerator Plant Eskişehir Turkey
| |
Collapse
|
77
|
Jiang D, Murugadoss V, Wang Y, Lin J, Ding T, Wang Z, Shao Q, Wang C, Liu H, Lu N, Wei R, Subramania A, Guo Z. Electromagnetic Interference Shielding Polymers and Nanocomposites - A Review. POLYM REV 2019. [DOI: 10.1080/15583724.2018.1546737] [Citation(s) in RCA: 290] [Impact Index Per Article: 58.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Dawei Jiang
- Department of Chemical Engineering and Technology, College of Science, Northeast Forestry University, Harbin, China
| | - Vignesh Murugadoss
- Integrated Composites Laboratory (ICL), Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN, USA
- Electrochemical Energy Research Lab, Centre for Nanoscience and Technology, Pondicherry University, Puducherry, India
| | - Ying Wang
- Department of Chemical Engineering and Technology, College of Science, Northeast Forestry University, Harbin, China
| | - Jing Lin
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, China
| | - Tao Ding
- Department of Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, P. R. China
| | - Zicheng Wang
- Integrated Composites Laboratory (ICL), Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN, USA
- Department of Civil Engineering, Lyles School of Civil Engineering, School of Materials Engineering, Birck Nanotechnology Center, Purdue University, West Lafayette, IN, USA
| | - Qian Shao
- Department of Applied Chemistry, College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong, China
| | - Chao Wang
- Department of Materials Science and Engineering, College of Materials Science and Engineering, North University of China, Taiyuan, China
| | - Hu Liu
- Integrated Composites Laboratory (ICL), Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN, USA
| | - Na Lu
- Department of Civil Engineering, Lyles School of Civil Engineering, School of Materials Engineering, Birck Nanotechnology Center, Purdue University, West Lafayette, IN, USA
| | - Renbo Wei
- Department of Chemistry, Research Branch of Advanced Functional Materials, University of Electronic Science and Technology of China, Chengdu, China
| | - Angaiah Subramania
- Electrochemical Energy Research Lab, Centre for Nanoscience and Technology, Pondicherry University, Puducherry, India
| | - Zhanhu Guo
- Integrated Composites Laboratory (ICL), Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN, USA
| |
Collapse
|
78
|
Sykam K, Meka KKR, Donempudi S. Intumescent Phosphorus and Triazole-Based Flame-Retardant Polyurethane Foams from Castor Oil. ACS OMEGA 2019; 4:1086-1094. [PMID: 31459384 PMCID: PMC6647972 DOI: 10.1021/acsomega.8b02968] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Accepted: 12/31/2018] [Indexed: 05/14/2023]
Abstract
Synthesis of a novel phosphorus and triazole-functionalized flame-retardant (FR) monomer (PTFM) using azide-alkyne "click" reaction between triprop-2-ynyl phosphate and 2-azidoethanol that can impart intumescent FR property to polyurethane foams (PUFs) has been reported. Polyurethane triazole foams (PUTFs) were prepared using the as-synthesized PTFM and a hydroxylated castor polyol with a hydroxyl value of ∼310 mg KOH/g for application as reactive FR rigid foams. PTFM and the castor polyol were characterized for structural elucidation using Fourier transform infrared and 1H, 13C, and 31P NMR. PUTFs with a varying loading content of PTFM were subjected to the lab-scale flame test, cone calorimetry test, Underwriters Laboratory 94 Vertical burning test (UL 94V), and limiting oxygen index (LOI) test. A significant increase in the char yields, reduction in heat release rates, V-1 rating, and 27% of LOI were observed for PUTFs compared to PUFs and proportional to the percentage loading of PTFM. The cumulative effect of nitrogen and phosphorus in PUTFs on their intumescent behavior was evident from the thermogravimetric analysis and scanning electron microscopy micrographs, which were further supplemented by X-ray photoelectron spectroscopy studies, indicating expulsion of N2 and overall improvement in compression strength as well. Such environment-friendly reactive FRs can be good replacements to the halogenated ones.
Collapse
Affiliation(s)
- Kesavarao Sykam
- Polymers
& Functional Materials Division, Indian
Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, Telangana, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Kiran Kumar Reddy Meka
- Polymers
& Functional Materials Division, Indian
Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, Telangana, India
| | - Shailaja Donempudi
- Polymers
& Functional Materials Division, Indian
Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, Telangana, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
- E-mail: . Phone: 040-27193992 (S.D.)
| |
Collapse
|
79
|
Zhou W, Bo C, Jia P, Zhou Y, Zhang M. Effects of Tung Oil-Based Polyols on the Thermal Stability, Flame Retardancy, and Mechanical Properties of Rigid Polyurethane Foam. Polymers (Basel) 2018; 11:E45. [PMID: 30960030 PMCID: PMC6401924 DOI: 10.3390/polym11010045] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 12/20/2018] [Accepted: 12/24/2018] [Indexed: 11/16/2022] Open
Abstract
A phosphorus-containing tung oil-based polyol (PTOP) and a silicon-containing tung oil-based polyol (PTOSi) were each efficiently prepared by attaching 9,10-dihydro-9-oxa-10-phosphaphenanthrene (DOPO) and dihydroxydiphenylsilane (DPSD) directly, respectively, to the epoxidized monoglyceride of tung oil (EGTO) through a ring-opening reaction. The two new polyols were used in the formation of rigid polyurethane foam (RPUF), which displayed great thermal stability and excellent flame retardancy performance. The limiting oxygen index (LOI) value of RPUF containing 80 wt % PTOP and 80 wt % PTOSi was 24.0% and 23.4%, respectively. Fourier transfer infrared (FTIR), Nuclear Magnetic Resonance (NMR) and thermogravimetric (TG) analysis revealed that DOPO and DPSD are linked to EGTO by a covalent bond. Interestingly, PTOP and PTOSi had opposite effects on Tg and the compressive strength of RPUF, where, with the appropriate loading, the compressive strengths were 0.82 MPa and 0.25 MPa, respectively. At a higher loading of PTOP and PTOSi, the thermal conductivity of RPUF increased while the RPUF density decreased. The scanning electron microscope (SEM) micrographs showed that the size and closed areas of the RPUF cells were regular. SEM micrographs of the char after combustion showed that the char layer was compact and dense. The enhanced flame retardancy of RPUF resulted from the barrier effect of the char layer, which was covered with incombustible substance.
Collapse
Affiliation(s)
- Wei Zhou
- Institute of Chemical Industry of Forestry Products, CAF, 16 Suojin North Road, Nanjing 210042, China.
- Key Lab of Forest Chemical Engineering, SFA, 16 Suojin North Road, Nanjing 210042, China.
| | - Caiying Bo
- Institute of Chemical Industry of Forestry Products, CAF, 16 Suojin North Road, Nanjing 210042, China.
- Key Lab of Biomass Energy and Material, Jiangsu Province, 16 Suojin North Road, Nanjing 210042, China.
| | - Puyou Jia
- Institute of Chemical Industry of Forestry Products, CAF, 16 Suojin North Road, Nanjing 210042, China.
- Key Lab of Biomass Energy and Material, Jiangsu Province, 16 Suojin North Road, Nanjing 210042, China.
| | - Yonghong Zhou
- Institute of Chemical Industry of Forestry Products, CAF, 16 Suojin North Road, Nanjing 210042, China.
- Key Lab of Biomass Energy and Material, Jiangsu Province, 16 Suojin North Road, Nanjing 210042, China.
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, China.
| | - Meng Zhang
- Institute of Chemical Industry of Forestry Products, CAF, 16 Suojin North Road, Nanjing 210042, China.
- Key Lab of Biomass Energy and Material, Jiangsu Province, 16 Suojin North Road, Nanjing 210042, China.
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, China.
| |
Collapse
|
80
|
Realinho V, Arencón D, Antunes M, Velasco JI. Effects of a Phosphorus Flame Retardant System on the Mechanical and Fire Behavior of Microcellular ABS. Polymers (Basel) 2018; 11:polym11010030. [PMID: 30960014 PMCID: PMC6401830 DOI: 10.3390/polym11010030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 12/20/2018] [Accepted: 12/21/2018] [Indexed: 11/16/2022] Open
Abstract
The present work deals with the study of phosphorus flame retardant microcellular acrylonitrile–butadiene–styrene (ABS) parts and the effects of weight reduction on the fire and mechanical performance. Phosphorus-based flame retardant additives (PFR), aluminum diethylphosphinate and ammonium polyphosphate, were used as a more environmentally friendly alternative to halogenated flame retardants. A 25 wt % of such PFR system was added to the polymer using a co-rotating twin-screw extruder. Subsequently, microcellular parts with 10, 15, and 20% of nominal weight reduction were prepared using a MuCell® injection-molding process. The results indicate that the presence of PFR particles increased the storage modulus and decreased the impact energy determined by means of dynamic-mechanical-thermal analysis and falling weight impact tests respectively. Nevertheless, the reduction of impact energy was found to be lower in ABS/PFR samples than in neat ABS with increasing weight reduction. This effect was attributed to the lower cell sizes and higher cell densities of the microcellular core of ABS/PFR parts. All ABS/PFR foams showed a self-extinguishing behavior under UL-94 burning vertical tests, independently of the weight reduction. Gradual decreases of the second peak of heat release rate and time of combustion with similar intumescent effect were observed with increasing weight reduction under cone calorimeter tests.
Collapse
Affiliation(s)
- Vera Realinho
- Centre Català del Plàstic, Departament de Ciència dels Materials i Enginyeria Metal·lúrgica, Universitat Politècnica de Catalunya (UPC Barcelona Tech), C/Colom 114, E-08222 Terrassa, Barcelona, Spain.
| | - David Arencón
- Centre Català del Plàstic, Departament de Ciència dels Materials i Enginyeria Metal·lúrgica, Universitat Politècnica de Catalunya (UPC Barcelona Tech), C/Colom 114, E-08222 Terrassa, Barcelona, Spain.
| | - Marcelo Antunes
- Centre Català del Plàstic, Departament de Ciència dels Materials i Enginyeria Metal·lúrgica, Universitat Politècnica de Catalunya (UPC Barcelona Tech), C/Colom 114, E-08222 Terrassa, Barcelona, Spain.
| | - José Ignacio Velasco
- Centre Català del Plàstic, Departament de Ciència dels Materials i Enginyeria Metal·lúrgica, Universitat Politècnica de Catalunya (UPC Barcelona Tech), C/Colom 114, E-08222 Terrassa, Barcelona, Spain.
| |
Collapse
|
81
|
Dong M, Li Q, Liu H, Liu C, Wujcik EK, Shao Q, Ding T, Mai X, Shen C, Guo Z. Thermoplastic polyurethane-carbon black nanocomposite coating: Fabrication and solid particle erosion resistance. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.11.003] [Citation(s) in RCA: 143] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
82
|
Bhoyate S, Ionescu M, Kahol PK, Gupta RK. Castor-oil derived nonhalogenated reactive flame-retardant-based polyurethane foams with significant reduced heat release rate. J Appl Polym Sci 2018. [DOI: 10.1002/app.47276] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Sanket Bhoyate
- Department of Chemistry; Pittsburg State University; Pittsburg Kansas 66762
| | - Mihail Ionescu
- Kansas Polymer Research Center; Pittsburg State University; Pittsburg Kansas 66762
| | - Pawan K. Kahol
- Department of Physics; Pittsburg State University; Pittsburg Kansas 66762
| | - Ram K. Gupta
- Department of Chemistry; Pittsburg State University; Pittsburg Kansas 66762
- Kansas Polymer Research Center; Pittsburg State University; Pittsburg Kansas 66762
| |
Collapse
|
83
|
Mora P, Jubsilp C, Liawthanyarat N, Okhawilai M, Rimdusit S. Friction and Mechanical Properties of Highly Filled Polybenzoxazine Composites: Nanosilica Particle Size and Surface Treatment. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201800328] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Phattarin Mora
- Polymer Engineering Laboratory; Department of Chemical Engineering; Faculty of Engineering, Chulalongkorn University; Bangkok 10330 Thailand
| | - Chanchira Jubsilp
- Department of Chemical Engineering; Faculty of Engineering; Srinakharinwirot University; Nakhonnayok 26120 Thailand
| | - Nutthaphon Liawthanyarat
- Polymer Engineering Laboratory; Department of Chemical Engineering; Faculty of Engineering, Chulalongkorn University; Bangkok 10330 Thailand
| | - Manunya Okhawilai
- Polymer Engineering Laboratory; Department of Chemical Engineering; Faculty of Engineering, Chulalongkorn University; Bangkok 10330 Thailand
| | - Sarawut Rimdusit
- Polymer Engineering Laboratory; Department of Chemical Engineering; Faculty of Engineering, Chulalongkorn University; Bangkok 10330 Thailand
- National Nanotechnology Center of Advanced Structural and Functional Nanomaterials; Department of Chemistry; Faculty of Science; Chulalongkorn University; Bangkok 10330 Thailand
| |
Collapse
|
84
|
Thermo-responsive polysulfone membranes with good anti-fouling property modified by grafting random copolymers via surface-initiated eATRP. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2018.05.046] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
85
|
Mallakpour S, Hatami M. Green and eco-friendly route for the synthesis of Ag@Vitamin B9-LDH hybrid and its chitosan nanocomposites: Characterization and antibacterial activity. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.08.077] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
86
|
Li C, Hui B, Ye L. Construction of Polyurethane-imide/Graphene Oxide Nanocomposite Foam with Gradient Structure and Its Thermal Mechanical Stability. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b02911] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chengjie Li
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Bing Hui
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Lin Ye
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| |
Collapse
|
87
|
Lv Z, Zhao N, Wu Z, Zhu C, Li Q. Fabrication of Novel Open-Cell Foams of Poly(ε-caprolactone)/Poly(lactic acid) Blends for Tissue-Engineering Scaffolds. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b02233] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zirui Lv
- School of Materials Science & Engineering, Zhengzhou University, Zhengzhou 450001, China
- National Center for International Joint Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou 450001, China
| | - Na Zhao
- School of Mechanics & Engineering Science, Zhengzhou University, Zhengzhou 450001, China
- National Center for International Joint Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou 450001, China
| | - Zeming Wu
- School of Mechanics & Engineering Science, Zhengzhou University, Zhengzhou 450001, China
- National Center for International Joint Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou 450001, China
| | - Changwei Zhu
- Sirade Technologies,
Inc., Toronto L4E 0S7, Canada
| | - Qian Li
- School of Mechanics & Engineering Science, Zhengzhou University, Zhengzhou 450001, China
- National Center for International Joint Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou 450001, China
| |
Collapse
|
88
|
Yao Y, Tian H, Yuan L, Wu Q, Xiang A. Improved mechanical, thermal, and flame-resistant properties of polyurethane-imide foams via expandable graphite modification. J Appl Polym Sci 2018. [DOI: 10.1002/app.46990] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yuanyuan Yao
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, School of Material and Mechanical Engineering; Beijing Technology and Business University; Beijing China
| | - Huafeng Tian
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, School of Material and Mechanical Engineering; Beijing Technology and Business University; Beijing China
| | - Li Yuan
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, School of Material and Mechanical Engineering; Beijing Technology and Business University; Beijing China
| | - Qiangxian Wu
- Green Polymer Laboratory; College of Chemistry, Central China Normal University; Wuhan China
| | - Aimin Xiang
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, School of Material and Mechanical Engineering; Beijing Technology and Business University; Beijing China
| |
Collapse
|
89
|
Liu L, Wang Z. High performance nano-zinc amino-tris-(methylenephosphonate) in rigid polyurethane foam with improved mechanical strength, thermal stability and flame retardancy. Polym Degrad Stab 2018. [DOI: 10.1016/j.polymdegradstab.2018.05.023] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
|
90
|
Yang H, Song L, Hu Y, Yuen RKK. Diphase flame-retardant effect of ammonium polyphosphate and dimethyl methyl phosphonate on polyisocyanurate-polyurethane foam. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4411] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hongyu Yang
- College of Materials Science and Engineering; Chongqing University; 83 Shabeijie, Shapingba Chongqing 400045 China
- State Key Laboratory of Coal Mine Disaster Dynamics and Control; Chongqing University; 174 Shazhengjie, Shapingba Chongqing 400044 China
| | - Lei Song
- State Key Laboratory of Fire Science; University of Science and Technology of China; 96 Jinzhai Road Hefei Anhui 230026 China
| | - Yuan Hu
- State Key Laboratory of Fire Science; University of Science and Technology of China; 96 Jinzhai Road Hefei Anhui 230026 China
| | - Richard K. K. Yuen
- Department of Architecture and Civil Engineering; City University of Hong Kong; Tat Chee Avenue Kowloon Hong Kong
| |
Collapse
|
91
|
Hexa-[4-(glycidyloxycarbonyl) phenoxy]cyclotriphosphazene chain extender for preparing high-performance flame retardant polyamide 6 composites. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.05.018] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
92
|
Waterborne acrylic resin modified with glycidyl methacrylate (GMA): Formula optimization and property analysis. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.04.020] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
93
|
Wang YP, Zhou P, Luo SZ, Guo S, Lin J, Shao Q, Guo X, Liu Z, Shen J, Wang B, Guo Z. In situ polymerized poly(acrylic acid)/alumina nanocomposites for Pb2+
adsorption. ADVANCES IN POLYMER TECHNOLOGY 2018. [DOI: 10.1002/adv.21969] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Ya-Ping Wang
- School of Chemical Engineering; Sichuan University; Chengdu Sichuan China
| | - Peng Zhou
- School of Chemical Engineering; Sichuan University; Chengdu Sichuan China
| | - Shi-Zhong Luo
- School of Chemical Engineering; Sichuan University; Chengdu Sichuan China
| | - Sijie Guo
- Integrated Composites Laboratory; Department of Chemical and Biomolecular Engineering; University of Tennessee; Knoxville TN USA
| | - Jing Lin
- School of Chemistry and Chemical Engineering; Guangzhou University; Guangdong China
| | - Qian Shao
- College of Chemical and Environmental Engineering; Shandong University of Science and Technology; Qingdao China
| | - Xingkui Guo
- College of Chemical and Environmental Engineering; Shandong University of Science and Technology; Qingdao China
| | - Zhongqing Liu
- School of Chemical Engineering; Sichuan University; Chengdu Sichuan China
| | - Jun Shen
- School of Chemical Engineering; Sichuan University; Chengdu Sichuan China
| | - Bin Wang
- Engineered Multifunctional Composites (EMC) Nanotech; Knoxville TN USA
| | - Zhanhu Guo
- Integrated Composites Laboratory; Department of Chemical and Biomolecular Engineering; University of Tennessee; Knoxville TN USA
| |
Collapse
|
94
|
Zhang S, Ji W, Han Y, Gu X, Li H, Sun J. Flame-retardant expandable polystyrene foams coated with ethanediol-modified melamine-formaldehyde resin and microencapsulated ammonium polyphosphate. J Appl Polym Sci 2018. [DOI: 10.1002/app.46471] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Sheng Zhang
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
- Beijing Key Laboratory of Advanced Functional Polymer Composites; Beijing University of Chemical Technology; Beijing 100029 China
| | - Wenfei Ji
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
- Beijing Key Laboratory of Advanced Functional Polymer Composites; Beijing University of Chemical Technology; Beijing 100029 China
| | - Yi Han
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
- Beijing Key Laboratory of Advanced Functional Polymer Composites; Beijing University of Chemical Technology; Beijing 100029 China
| | - Xiaoyu Gu
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
| | - Hongfei Li
- Beijing Key Laboratory of Advanced Functional Polymer Composites; Beijing University of Chemical Technology; Beijing 100029 China
| | - Jun Sun
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
- Beijing Key Laboratory of Advanced Functional Polymer Composites; Beijing University of Chemical Technology; Beijing 100029 China
| |
Collapse
|
95
|
Novel synthesis of high-molecular-weight prepolymer of poly(p-phenylene benzoxazole) in ionic liquids. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4276] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
96
|
Huang Z, Lei K, He D, Xu Y, Williams J, Hu L, McNeil M, Ruso JM, Liu Z, Guo Z, Wang Z. Self-regulation in chemical and bio-engineering materials for intelligent systems. CAAI TRANSACTIONS ON INTELLIGENCE TECHNOLOGY 2018; 3:40-48. [PMID: 34113747 PMCID: PMC8188858 DOI: 10.1049/trit.2018.0004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Herein, the authors review the self-regulation system secured by well-designed hybrid materials, composites, and complex system. As a broad concept, the self-regulated material/system has been defined in a wide research field and proven to be of great interest for use in a biomedical system, mechanical system, physical system, as the fact of something such as an organisation regulating itself without intervention from external perturbation. Here, they focus on the most recent discoveries of self-regulation phenomenon and progress in utilising the self-regulation design. This paper concludes by examining various practical applications of the remarkable materials and systems including manipulation of the oil/water interface, cell out-layer structure, radical activity, electron energy level, and mechanical structure of nanomaterials. From material science to bioengineering, self-regulation proves to be not only viable, but increasingly useful in many applications. As part of intelligent engineering, self-regulatory materials are expected to be more used as integrated intelligent components.
Collapse
Affiliation(s)
- Zhongyuan Huang
- Chemistry Department, Xavier University of Louisiana, New Orleans, LA 70125, USA
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, Henan, People’s Republic of China
| | - Kewei Lei
- Chemistry Department, Xavier University of Louisiana, New Orleans, LA 70125, USA
- Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, People’s Republic of China
| | - Dan He
- Chemistry Department, Xavier University of Louisiana, New Orleans, LA 70125, USA
- Department of Pharmaceutical Analysis, Chongqing Medical University, Chongqing 400016, People’s Republic of China
| | - Yanbin Xu
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, Shandong, People’s Republic of China
| | - Jacob Williams
- Department of Physics and Engineering, Frostburg State University, Frostburg, MD 21532, USA
- Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA
| | - Liu Hu
- Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA
- National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, People’s Republic of China
| | - Macy McNeil
- Chemistry Department, Xavier University of Louisiana, New Orleans, LA 70125, USA
| | - Juan M. Ruso
- Soft Matter and Molecular Biophysics Group, Department of Applied Physics, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Zhen Liu
- Department of Physics and Engineering, Frostburg State University, Frostburg, MD 21532, USA
| | - Zhanhu Guo
- Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA
| | - Zhe Wang
- Chemistry Department, Xavier University of Louisiana, New Orleans, LA 70125, USA
| |
Collapse
|
97
|
Wang C, Mo B, He Z, Xie X, Zhao CX, Zhang L, Shao Q, Guo X, Wujcik EK, Guo Z. Hydroxide ions transportation in polynorbornene anion exchange membrane. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.01.079] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
98
|
Zheng Y, Chen Y. Preparation of polypropylene/Mg-Al layered double hydroxides nanocomposites through wet pan-milling: non-isothermal crystallization behaviour. ROYAL SOCIETY OPEN SCIENCE 2018; 5:171070. [PMID: 29410819 PMCID: PMC5792896 DOI: 10.1098/rsos.171070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 11/24/2017] [Indexed: 06/08/2023]
Abstract
Differential scanning calorimeter was used to extensively investigate the non-isothermal crystallization of polypropylene (PP)/layered double hydroxides (LDHs) nanocomposites prepared through wet solid-state shear milling. The corresponding crystallization kinetics was further investigated by using Ozawa, modified Avrami and combined Avrami-Ozawa method, respectively. The results showed that the Ozawa method could not well describe the crystallization kinetics of pure PP and its nanocomposites. Comparatively, the modified Avrami method as well as the combined Avrami-Ozawa method gives the satisfactory results. Under the effect of pan-milling, the produced LDH nano intercalated/exfoliated particles exhibit the inhibitive effect on the PP nucleation but more remarkable promotion effect on the spherulite growth, leading to enhancement in the overall crystallization rate. This is reflected in increase of the calculated fold surface free energy σe and also the supercooling degree ΔT required for crystallization nucleation. In addition, the polarized optical microscopy observation also verifies the higher spherulite growth rate of PP/LDHs nanocomposites than that of pure PP.
Collapse
|
99
|
Zhao J, Ge S, Liu L, Shao Q, Mai X, Zhao CX, Hao L, Wu T, Yu Z, Guo Z. Microwave Solvothermal Fabrication of Zirconia Hollow Microspheres with Different Morphologies Using Pollen Templates and Their Dye Adsorption Removal. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b04000] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Junkai Zhao
- College
of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Shengsong Ge
- College
of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Lirong Liu
- College
of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Qian Shao
- College
of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Xianmin Mai
- School
of Urban Planning and Architecture, Southwest Minzu University, Chengdu 610041, China
| | - Cindy Xinxin Zhao
- Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Luhan Hao
- Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Tingting Wu
- Department
of Civil and Environmental Engineering, The University of Alabama in Huntsville, Huntsville, Alabama 35899, United States
| | - Zepei Yu
- College
of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Zhanhu Guo
- Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| |
Collapse
|
100
|
Mishra R, Nirala NR, Pandey RK, Ojha RP, Prakash R. Homogenous Dispersion of MoS 2 Nanosheets in Polyindole Matrix at Air-Water Interface Assisted by Langmuir Technique. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:13572-13580. [PMID: 29099604 DOI: 10.1021/acs.langmuir.7b03019] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Two-dimensional (2D) inorganic layered materials when embedded in organic polymer matrix exhibit exotic properties that are grabbing contemporary attention for various applications. Here, nanosheet morphology of molybdenum disufide (MoS2) synthesized via one-pot facile hydrothermal reaction are exfoliated in benign aqueous medium in the presence of indole to obtain a stable dispersion. These exfoliated nanosheets then act as host to template the controlled polymerization of indole. The preassembled MoS2-polyindole (MoS2-PIn) nanostructures are reorganized at the air-water interface using the Langmuir method to facilitate maximum interfacial interaction between nanosheet and polymer. This report emphasizes large area, homogeneous dispersion of uniform-sized MoS2 nanosheets (40-60 nm diameter) in the PIn matrix and the formation of stable and uniform film via the Langmuir-Schaefer (LS) method. These self-assembled, MoS2 decorated PIn LS films are characterized using atomic force microscopy (AFM) and transmission electron microscopy (TEM). The fabricated LS films in sandwiched structure Al/MoS2-PIn/ITO as the Schottky diode portrayed remarkable enhancements in charge transport properties. Our study illustrates the potential of the MoS2-PIn LS film in electronic applications and opens a new dimension for uniform dispersion of 2D materials in other polymers via the Langmuir method for device fabrication and enhancement of electrical properties.
Collapse
Affiliation(s)
- Richa Mishra
- School of Materials Science and Technology, Indian Institute of Technology, Banaras Hindu University , Varanasi-221005, India
| | - Narsingh R Nirala
- School of Materials Science and Technology, Indian Institute of Technology, Banaras Hindu University , Varanasi-221005, India
| | - Rajiv Kumar Pandey
- School of Materials Science and Technology, Indian Institute of Technology, Banaras Hindu University , Varanasi-221005, India
| | - Ravi Prakash Ojha
- School of Materials Science and Technology, Indian Institute of Technology, Banaras Hindu University , Varanasi-221005, India
| | - Rajiv Prakash
- School of Materials Science and Technology, Indian Institute of Technology, Banaras Hindu University , Varanasi-221005, India
| |
Collapse
|