1
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Shang M, Wei Y, Zhou H, Wu T, Wang K, Chen H, Fang B, Zhao Y. Study on aging behavior of polyethylene glycol under three wavelengths of ultraviolet light irradiation. RSC Adv 2023; 13:34576-34586. [PMID: 38024993 PMCID: PMC10669924 DOI: 10.1039/d3ra06407g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 11/09/2023] [Indexed: 12/01/2023] Open
Abstract
PEG2000 (polyethylene glycol, molecular weight: 2000) is commonly used for the dehydration and reinforcement of waterlogged wooden cultural relics, but its photo-aging degradation will seriously affect the long-term conservation of the wooden cultural relics. In this study, the photo-aging characteristics and mechanisms of PEG2000 under UV (ultraviolet) irradiations of three wavelengths were comprehensively investigated, and the surface morphology, crystal structure, and relative molecular weight of PEG2000 were systematically characterized. The results showed that PEG2000 showed a higher gloss loss rate, carbonyl index and crystallinity, and a wider molecular weight distribution with increasing aging time, especially under the irradiation of 313 nm ultraviolet light. The evolution of the PEG2000 from surface to interior during photoaging was elucidated by SEM (scanning electron microscopy) and FTIR (Fourier transform infrared spectroscopy), and it was determined that photodegradation not only occurs on the surface of PEG2000 but also gradually extends to the interior of the sample with the prolongation of irradiation time, resulting in the transformation of the basic component unit of spherical crystals in PEG2000 from fibrous crystals to spherical particles. Based on 1H-NMR (nuclear magnetic resonance spectroscopy), the photochemical reactions for the generation of degradation products were proposed, and it was found that the degradation occurred at the C-H and C-O-C bonds on the main chain, forming a large number of ester and ethoxy structures. The aging degree of PEG2000 was evaluated from the perspective of surface morphology and chemical structure by gloss and FTIR spectroscopy, and it was found that the combination of gloss loss rate and carbonyl index was more suitable to evaluate the aging degree of the sample. The relevant theoretical research will provide reliable guidance for the preservation of polyethylene glycol in waterlogged wooden cultural relics.
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Affiliation(s)
- Mingyu Shang
- State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology Wuhan 430081 China
| | - Yanfei Wei
- Institute of Cultural Relics and Archaeology of Gansu Lanzhou 730000 China
| | - Herong Zhou
- State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology Wuhan 430081 China
| | - Tao Wu
- State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology Wuhan 430081 China
| | - Ke Wang
- State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology Wuhan 430081 China
| | - Hongxiang Chen
- Hubei Key Laboratory of Coal Conversion and New Carbon Material, College of Chemical Engineering and Technology, Wuhan University of Science and Technology Wuhan 430081 China
| | - Beisong Fang
- Jingzhou Cultural Relics Protection Center Jingzhou 434000 China
| | - Yang Zhao
- Jingzhou Cultural Relics Protection Center Jingzhou 434000 China
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2
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Li D, Chen Y, Sun L, Zhou J, Dong L, Ren J. The Role of Interchain Force and/or Chain Entanglement in the Melt Strength and Ductility of PLA-Based Materials. Chem Asian J 2023; 18:e202300577. [PMID: 37466153 DOI: 10.1002/asia.202300577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Accepted: 07/18/2023] [Indexed: 07/20/2023]
Abstract
As an eco-friendly material, PLA was a desirable alternative to polyethylene and polypropylene films due to its biodegradability. The preferable melt strength of PLA-based materials was a key factor in ensuring its processing using extrusion blow. This paper focuses on the influence of interchain force and/or chain entanglement on the melt strength and ductility of PLA-based materials in recent years. In addition, the preparation of PLA-based materials via physical blending or reactive processing was also summarized. The blending of PLA with a flexible heteropolymer, driven by the interchain force and/or chain entanglements, were characterized as a practicable method for toughening PLA-based materials. Also, the restructuring of PLA chains, by branching based on chain entanglement, was suitable for increasing chain entanglements in PLA matrix, yielding satisfactory melt strength and ductility. This review aims to elucidate the relationship between interchain forces and/or entanglement with the melt strength and ductility of PLA-based materials. An essential and systematic understanding of the tailoring melt strength and rheological properties of PLA by interchain forces and/or entanglement was apt to improve and perfect the processing technology of the extrusion blow, and consequently improve the tensile strength and toughness of PLA films.
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Affiliation(s)
- Deling Li
- College of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou, Jiangsu, 221018, China
| | - Ying Chen
- College of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou, Jiangsu, 221018, China
| | - Limei Sun
- College of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou, Jiangsu, 221018, China
| | - Jun Zhou
- College of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou, Jiangsu, 221018, China
| | - Liming Dong
- College of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou, Jiangsu, 221018, China
| | - Jizhen Ren
- College of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou, Jiangsu, 221018, China
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3
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Fang F, Niu D, Xu P, Liu T, Yang W, Wang Z, Li X, Ma P. A Quantitative Study on Branching Density Dependent Behavior of Polylactide Melt Strength. Macromol Rapid Commun 2023; 44:e2200858. [PMID: 36661258 DOI: 10.1002/marc.202200858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/29/2022] [Indexed: 01/21/2023]
Abstract
Polymer melt strength (MS) is strongly correlated with its molecular structure, while their relationship is not very clear yet. In this work, designable long-chain branched polylactide (LCB-PLA) is prepared in situ by using a tailor-made (methyl methacrylate)-co-(glycidyl methacrylate) copolymer (MG) with accurate number of reactive sites. A new concept of branching density (φ) in the LCB-PLA system is defined to quantitively study their relationship. Importantly, a critical point of φc = 5.5 mol/104 mol C is revealed for the first time, below which the zero-shear viscosity (η0 ) corresponding to MS increases slowly with a slope of Δη0 /Δφ = 1400, while it increases sharply above this critical point due to entanglement of neighboring LCB-PLA chains. Consequently, the MS of PLA increased by >100 times by optimizing the LCB structures while maintaining processibility. Therefore, this work provides a deeper understanding and feasible route in quantitative design of polymers with high(er) melt strength for some specialty applications.
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Affiliation(s)
- Fengna Fang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Deyu Niu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Pengwu Xu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Tianxi Liu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Weijun Yang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Zhenyu Wang
- Institute of Environmental Processes and Pollution control, Jiangnan University, Wuxi, 214122, China
| | - Xiaona Li
- Institute of Environmental Processes and Pollution control, Jiangnan University, Wuxi, 214122, China
| | - Piming Ma
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
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4
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Recent advances on reactive Extrusion of Poly(lactic acid). Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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5
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Crystallinity effect on electron-induced molecular structure transformations in additive-free PLA. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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6
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Chang FL, Hu B, Huang WT, Chen L, Yin XC, Cao XW, He GJ. Improvement of rheology and mechanical properties of PLA/PBS blends by in-situ UV-induced reactive extrusion. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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7
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Mechanically robust and flame-retardant poly(lactide)/poly(butylene adipate-co-terephthalate) composites based on carbon nanotubes and ammonium polyphosphate. Int J Biol Macromol 2022; 221:573-584. [PMID: 36087754 DOI: 10.1016/j.ijbiomac.2022.09.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 09/03/2022] [Accepted: 09/05/2022] [Indexed: 11/21/2022]
Abstract
In order to synchronously improve mechanical and flame retardant properties of polylactide/poly(butylene adipate-co-terephthalate) (PLA/PBAT) composites, a series of multifunctional composites containing multi-walled carbon nanotubes (CNTs), ammonium polyphosphate (APP) and a commercial multifunctional epoxy oligomer (MEO) as chain extender were prepared via melt blending. The results show that the optimal flame retardant properties of PLA5-PBAT5/10A/6C composite containing 6 % CNTs and 10 wt% APP, presented the limited oxygen index reached 28.3 % and exhibited a decrease in peak heat release rate (pHRR) and total heat release (THR) to 368 kJ/m2 and 72 MJ/m2, respectively because of the co-continuous phase, CNTs network and condensed effect of APP. Meanwhile, the construction of co-continuous phases endows PLA5-PBAT5 with better mechanical compared to PLA8-PBAT2 composites. The elongation at break reaches (245.9 %) and notched impact strength (16.5 kJ/m2) of PLA5-PBAT5/10A/6C were higher than the PLA8-PBAT2/10A/6C by 16.0 and 283.7 %.
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8
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Li S, Liao X, Xiao W, Jiang Q, Li G. The improved foaming behavior of PLA caused by the enhanced rheology properties and crystallization behavior via synergistic effect of carbon nanotubes and graphene. J Appl Polym Sci 2022. [DOI: 10.1002/app.51874] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Shaojie Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China
| | - Xia Liao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China
| | - Wei Xiao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China
| | - Qiuyue Jiang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China
| | - Guangxian Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China
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9
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Zhao X, Li J, Liu J, Zhou W, Peng S. Recent progress of preparation of branched poly(lactic acid) and its application in the modification of polylactic acid materials. Int J Biol Macromol 2021; 193:874-892. [PMID: 34728305 DOI: 10.1016/j.ijbiomac.2021.10.154] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/30/2021] [Accepted: 10/20/2021] [Indexed: 01/01/2023]
Abstract
Poly (lactic acid) (PLA) with branched structure has abundant terminal groups, high melt strength, good rheological properties, and excellent processability; it is a new research and application direction of PLA materials. This study mainly summarizes the molecular structure design, preparation methods, basic properties of branched PLA, and its application in modified PLA materials. The structure and properties of branched PLA prepared by ring-opening polymerization of monomer, functional group polycondensation, and chain extender in the processing process were introduced. The research progress of in situ formation of branched PLA by initiators, multifunctional monomers/additives through dynamic vulcanization, and irradiation induction was described. The effect of branched PLA on the structure and properties of linear PLA materials was analyzed. The role of branched PLA in improving the crystallization behavior, phase morphology, foaming properties, and mechanical properties of linear PLA materials was discussed. At the same time, its research progress in biomedicine and tissue engineering was analyzed. Branched PLA has excellent compatibility with PLA, which has important research value in regulating the structure and properties of PLA materials.
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Affiliation(s)
- Xipo Zhao
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing, Hubei University of Technology, Wuhan 430068, China.
| | - Juncheng Li
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing, Hubei University of Technology, Wuhan 430068, China
| | - Jinchao Liu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing, Hubei University of Technology, Wuhan 430068, China
| | - Weiyi Zhou
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing, Hubei University of Technology, Wuhan 430068, China
| | - Shaoxian Peng
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing, Hubei University of Technology, Wuhan 430068, China.
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10
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Engineering of polybutylene succinate with long-chain branching toward high foamability and degradation. Polym Degrad Stab 2021. [DOI: 10.1016/j.polymdegradstab.2021.109745] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Huang Y, Brünig H, Müller MT, Wießner S. Melt spinning of
PLA
/
PCL
blends modified with electron induced reactive processing. J Appl Polym Sci 2021. [DOI: 10.1002/app.51902] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Ying Huang
- Institute of Polymer Materials Leibniz‐Institut für Polymerforschung Dresden e.V. Dresden Germany
- Institute of Materials Science Technische Universität Dresden Dresden Germany
| | - Harald Brünig
- Institute of Polymer Materials Leibniz‐Institut für Polymerforschung Dresden e.V. Dresden Germany
| | - Michael Thomas Müller
- Institute of Polymer Materials Leibniz‐Institut für Polymerforschung Dresden e.V. Dresden Germany
| | - Sven Wießner
- Institute of Polymer Materials Leibniz‐Institut für Polymerforschung Dresden e.V. Dresden Germany
- Institute of Materials Science Technische Universität Dresden Dresden Germany
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12
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Nikolaivits E, Pantelic B, Azeem M, Taxeidis G, Babu R, Topakas E, Brennan Fournet M, Nikodinovic-Runic J. Progressing Plastics Circularity: A Review of Mechano-Biocatalytic Approaches for Waste Plastic (Re)valorization. Front Bioeng Biotechnol 2021; 9:696040. [PMID: 34239864 PMCID: PMC8260098 DOI: 10.3389/fbioe.2021.696040] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 05/28/2021] [Indexed: 01/10/2023] Open
Abstract
Inspirational concepts, and the transfer of analogs from natural biology to science and engineering, has produced many excellent technologies to date, spanning vaccines to modern architectural feats. This review highlights that answers to the pressing global petroleum-based plastic waste challenges, can be found within the mechanics and mechanisms natural ecosystems. Here, a suite of technological and engineering approaches, which can be implemented to operate in tandem with nature's prescription for regenerative material circularity, is presented as a route to plastics sustainability. A number of mechanical/green chemical (pre)treatment methodologies, which simulate natural weathering and arthropodal dismantling activities are reviewed, including: mechanical milling, reactive extrusion, ultrasonic-, UV- and degradation using supercritical CO2. Akin to natural mechanical degradation, the purpose of the pretreatments is to render the plastic materials more amenable to microbial and biocatalytic activities, to yield effective depolymerization and (re)valorization. While biotechnological based degradation and depolymerization of both recalcitrant and bioplastics are at a relatively early stage of development, the potential for acceleration and expedition of valuable output monomers and oligomers yields is considerable. To date a limited number of independent mechano-green chemical approaches and a considerable and growing number of standalone enzymatic and microbial degradation studies have been reported. A convergent strategy, one which forges mechano-green chemical treatments together with the enzymatic and microbial actions, is largely lacking at this time. An overview of the reported microbial and enzymatic degradations of petroleum-based synthetic polymer plastics, specifically: low-density polyethylene (LDPE), high-density polyethylene (HDPE), polystyrene (PS), polyethylene terephthalate (PET), polyurethanes (PU) and polycaprolactone (PCL) and selected prevalent bio-based or bio-polymers [polylactic acid (PLA), polyhydroxyalkanoates (PHAs) and polybutylene succinate (PBS)], is detailed. The harvesting of depolymerization products to produce new materials and higher-value products is also a key endeavor in effectively completing the circle for plastics. Our challenge is now to effectively combine and conjugate the requisite cross disciplinary approaches and progress the essential science and engineering technologies to categorically complete the life-cycle for plastics.
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Affiliation(s)
- Efstratios Nikolaivits
- Industrial Biotechnology & Biocatalysis Group, Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens, Athens, Greece
| | - Brana Pantelic
- Eco-Biotechnology & Drug Development Group, Laboratory for Microbial Molecular Genetics and Ecology, Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Serbia
| | | | - George Taxeidis
- Industrial Biotechnology & Biocatalysis Group, Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens, Athens, Greece
| | - Ramesh Babu
- AMBER Centre, CRANN Institute, School of Chemistry, Trinity College Dublin, Dublin, Ireland
| | - Evangelos Topakas
- Industrial Biotechnology & Biocatalysis Group, Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens, Athens, Greece
| | | | - Jasmina Nikodinovic-Runic
- Eco-Biotechnology & Drug Development Group, Laboratory for Microbial Molecular Genetics and Ecology, Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Serbia
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13
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Salehi A, Pircheraghi G. Thermo‐oxidative degradation during sintering of polyethylene particles. J Appl Polym Sci 2021. [DOI: 10.1002/app.50373] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Amirmehdi Salehi
- Polymeric Materials Research Group (PMRG), Department of Materials Science and Engineering Sharif University of Technology Tehran Iran
| | - Gholamreza Pircheraghi
- Polymeric Materials Research Group (PMRG), Department of Materials Science and Engineering Sharif University of Technology Tehran Iran
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14
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Li P, Zhu X, Kong M, Lv Y, Huang Y, Yang Q, Li G. Fully biodegradable polylactide foams with ultrahigh expansion ratio and heat resistance for green packaging. Int J Biol Macromol 2021; 183:222-234. [PMID: 33930441 DOI: 10.1016/j.ijbiomac.2021.04.146] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 04/19/2021] [Accepted: 04/23/2021] [Indexed: 01/11/2023]
Abstract
Long chain branching (LCB) structures are efficiently introduced into polylactide (PLA) by employing sustainable soybean oil (SO) under the initiation of trace amount of cyclic peroxide, which displays robust foamability and heat resistance. It is discovered that with the introduction of 0.6 wt% SO, the expansion ratio and Vicat softening temperature of LCB PLA are sharply raised to 75.2-fold and 155.8 °C, respectively, which is about 17.9 and 2.6 times those of linear PLA. This is because that the amounts of LCB structures are significantly increased in LCB PLA by the addition of SO with low reactivity of internal CC bonds, which can avoid the oligomerization reaction, resulting in more dramatically improved melting strength and crystallization performance of LCB PLA. Moreover, the hydrolytic degradation of LCB PLA is largely expedited as compared to linear PLA, owing to the more rapid water permeation caused by the loose packing of LCB structures. Finally, the PLA foam tray with light weight and good heat resistance is successfully developed by using LCB PLA with 0.6 wt% SO through extrusion foaming with supercritical carbon oxide and thermoforming techniques. Hence, this research offers a green route to produce eco-friendly light-weight and high-heat-resistance LCB-PLA foam with full biodegradability, which is an ideal alternative to the non-degradable oil-based plastics in the field of disposable packaging products.
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Affiliation(s)
- Peng Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, PR China
| | - Xiaoyi Zhu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, PR China
| | - Miqiu Kong
- School of Aeronautics and Astronautics, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, PR China.
| | - Yadong Lv
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, PR China
| | - Yajiang Huang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, PR China
| | - Qi Yang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, PR China
| | - Guangxian Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, PR China
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15
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Tiwary P, Najafi N, Kontopoulou M. Advances in peroxide‐initiated graft modification of thermoplastic biopolyesters by reactive extrusion. CAN J CHEM ENG 2021. [DOI: 10.1002/cjce.24080] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Praphulla Tiwary
- Department of Chemical Engineering Queen's University Kingston Ontario Canada
| | - Naqi Najafi
- Department of Chemical Engineering Queen's University Kingston Ontario Canada
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16
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Wen-Dong T, Guang-Jian H, Wei-Tao H, Xin-Liang Z, Xian-Wu C, Xiao-Chun Y. The reactive compatibilization of PLA/PP blends and improvement of PLA crystallization properties induced by in situ UV irradiation. CrystEngComm 2021. [DOI: 10.1039/d0ce01445a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The crystallization rate of PLA in PLA/PP blends increased after reactive compatibilization during a reactive extrusion process.
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Affiliation(s)
- Tang Wen-Dong
- The Key Laboratory of Polymer Processing Engineering of Ministry of Education
- National Engineering Research Center of Novel Equipment for Polymer Processing
- Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing
- South China University of Technology
- Guangzhou 510640
| | - He Guang-Jian
- The Key Laboratory of Polymer Processing Engineering of Ministry of Education
- National Engineering Research Center of Novel Equipment for Polymer Processing
- Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing
- South China University of Technology
- Guangzhou 510640
| | - Huang Wei-Tao
- The Key Laboratory of Polymer Processing Engineering of Ministry of Education
- National Engineering Research Center of Novel Equipment for Polymer Processing
- Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing
- South China University of Technology
- Guangzhou 510640
| | - Zou Xin-Liang
- The Key Laboratory of Polymer Processing Engineering of Ministry of Education
- National Engineering Research Center of Novel Equipment for Polymer Processing
- Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing
- South China University of Technology
- Guangzhou 510640
| | - Cao Xian-Wu
- The Key Laboratory of Polymer Processing Engineering of Ministry of Education
- National Engineering Research Center of Novel Equipment for Polymer Processing
- Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing
- South China University of Technology
- Guangzhou 510640
| | - Yin Xiao-Chun
- The Key Laboratory of Polymer Processing Engineering of Ministry of Education
- National Engineering Research Center of Novel Equipment for Polymer Processing
- Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing
- South China University of Technology
- Guangzhou 510640
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17
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Przybysz-Romatowska M, Haponiuk J, Formela K. Reactive extrusion of biodegradable aliphatic polyesters in the presence of free-radical-initiators: A review. Polym Degrad Stab 2020. [DOI: 10.1016/j.polymdegradstab.2020.109383] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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18
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High performance branched poly(lactide) induced by reactive extrusion with low-content cyclic organic peroxide and multifunctional acrylate coagents. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122867] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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19
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Khademi SMH, Hemmati F, Aroon MA. An insight into different phenomena involved in continuous extrusion foaming of biodegradable poly(lactic acid)/expanded graphite nanocomposites. Int J Biol Macromol 2020; 157:470-483. [DOI: 10.1016/j.ijbiomac.2020.04.127] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 04/07/2020] [Accepted: 04/18/2020] [Indexed: 11/30/2022]
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20
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Cai J, Liu Z, Cao B, Guan X, Liu S, Zhao J. Simultaneous Improvement of the Processability and Mechanical Properties of Polyamide-6 by Chain Extension in Extrusion. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c02022] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jianan Cai
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Zhipeng Liu
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Bo Cao
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Xiaoxiao Guan
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Shumei Liu
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
- Key Laboratory of Guangdong High Property & Functional Polymer Materials, Guangzhou 510640, P. R. China
| | - Jianqing Zhao
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
- Key Laboratory of Guangdong High Property & Functional Polymer Materials, Guangzhou 510640, P. R. China
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21
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Huang W, He G, Tang W, Cao X. Ultraviolet‐induced chain extension of poly(ethylene terephthalate) based on radical reaction with the aid of trimethylolpropane triacrylate and glycidyl methacrylate during extrusion. POLYM INT 2020. [DOI: 10.1002/pi.5996] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Wei‐Tao Huang
- Key Laboratory of Polymer Processing Engineering Ministry of Education, National Engineering Research Center of Novel Equipment for Polymer Processing, Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced ManufacturingSouth China University of Technology Guangzhou China
| | - Guang‐Jian He
- Key Laboratory of Polymer Processing Engineering Ministry of Education, National Engineering Research Center of Novel Equipment for Polymer Processing, Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced ManufacturingSouth China University of Technology Guangzhou China
| | - Wen‐Dong Tang
- Key Laboratory of Polymer Processing Engineering Ministry of Education, National Engineering Research Center of Novel Equipment for Polymer Processing, Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced ManufacturingSouth China University of Technology Guangzhou China
| | - Xian‐Wu Cao
- Key Laboratory of Polymer Processing Engineering Ministry of Education, National Engineering Research Center of Novel Equipment for Polymer Processing, Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced ManufacturingSouth China University of Technology Guangzhou China
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22
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Liu Y, Cao H, Ye L, Coates P, Caton-Rose F, Zhao X. Long-Chain Branched Poly(lactic acid)-b-poly(lactide-co-caprolactone): Structure, Viscoelastic Behavior, and Triple-Shape Memory Effect as Smart Bone Fixation Material. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b06514] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Yalong Liu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Huijie Cao
- 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
| | - Phil Coates
- School of Engineering, Design and Technology, University of Bradford, Bradford BD7 1DP, U.K
| | - Fin Caton-Rose
- School of Engineering, Design and Technology, University of Bradford, Bradford BD7 1DP, U.K
| | - Xiaowen Zhao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
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23
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Li P, Zhang W, Zhu X, Kong M, Lv Y, Huang Y, Gong P, Li G. Simultaneous Improvement of the Foaming Property and Heat Resistance in Polylactide via One-step Branching Reaction Initiated by Cyclic Organic Peroxide. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b05784] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Peng Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, P. R. China
| | - Wei Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, P. R. China
| | - Xiaoyi Zhu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, P. R. China
| | - Miqiu Kong
- School of Aeronautics and Astronautics, Sichuan University, Chengdu 610065, P. R. China
| | - Yadong Lv
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, P. R. China
| | - Yajiang Huang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, P. R. China
| | - Pengjian Gong
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, P. R. China
| | - Guangxian Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, P. R. China
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24
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Martínez-Mercado E, Ruiz-Treviño FA, González-Montiel A, Lugo-Uribe LE, Flores-Santos L. Long chain branched structures of polylactic acid through reactive extrusion with styrene-acrylic copolymers bearing epoxy functional groups. JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-019-1938-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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25
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Jiang R, Chen Y, Yao S, Liu T, Xu Z, Park CB, Zhao L. Preparation and characterization of high melt strength thermoplastic polyester elastomer with different topological structure using a two-step functional group reaction. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121628] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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26
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27
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Dawidziuk K, Simmons H, Kontopoulou M, Parent JS. Peroxide-initiated graft modification of thermoplastic BioPolyesters: Introduction of long-chain branching. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.10.053] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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28
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Li S, He G, Liao X, Park CB, Yang Q, Li G. Introduction of a long-chain branching structure by ultraviolet-induced reactive extrusion to improve cell morphology and processing properties of polylactide foam. RSC Adv 2017. [DOI: 10.1039/c6ra26457c] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Long-chain branching structure introduced by UV-induced reactive extrusion could widen its foaming processing window.
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Affiliation(s)
- Shaojie Li
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu
- China
| | - Guangjian He
- The Key Laboratory of Polymer Processing Engineering of Ministry of Education
- National Engineering Research Center of Novel Equipment for Polymer Processing
- South China University of Technology
- Guangzhou 510640
- China
| | - Xia Liao
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu
- China
| | - Chul B. Park
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu
- China
| | - Qi Yang
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu
- China
| | - Guangxian Li
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu
- China
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29
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Balk M, Behl M, Wischke C, Zotzmann J, Lendlein A. Recent advances in degradable lactide-based shape-memory polymers. Adv Drug Deliv Rev 2016; 107:136-152. [PMID: 27262926 DOI: 10.1016/j.addr.2016.05.012] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 05/04/2016] [Accepted: 05/11/2016] [Indexed: 11/24/2022]
Abstract
Biodegradable polymers are versatile polymeric materials that have a high potential in biomedical applications avoiding subsequent surgeries to remove, for example, an implanted device. In the past decade, significant advances have been achieved with poly(lactide acid) (PLA)-based materials, as they can be equipped with an additional functionality, that is, a shape-memory effect (SME). Shape-memory polymers (SMPs) can switch their shape in a predefined manner upon application of a specific external stimulus. Accordingly, SMPs have a high potential for applications ranging from electronic engineering, textiles, aerospace, and energy to biomedical and drug delivery fields based on the perspectives of new capabilities arising with such materials in biomedicine. This study summarizes the progress in SMPs with a particular focus on PLA, illustrates the design of suitable homo- and copolymer structures as well as the link between the (co)polymer structure and switching functionality, and describes recent advantages in the implementation of novel switching phenomena into SMP technology.
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30
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Lu J, Wu L, Li BG. Long chain branched poly(butylene succinate-co-terephthalate) copolyesters using pentaerythritol as branching agent: Synthesis, thermo-mechanical, and rheological properties. J Appl Polym Sci 2016. [DOI: 10.1002/app.44544] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Jing Lu
- State Key Laboratory of Chemical Engineering at ZJU College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 China
| | - Linbo Wu
- State Key Laboratory of Chemical Engineering at ZJU College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 China
| | - Bo-Geng Li
- State Key Laboratory of Chemical Engineering at ZJU College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 China
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