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Wang L, Li D, Ye L, Zhi C, Zhang T, Miao M. Development of a self-reinforced starch-derived film with biocompatibility and mechanical properties. Food Chem 2024; 447:138974. [PMID: 38489880 DOI: 10.1016/j.foodchem.2024.138974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Revised: 01/29/2024] [Accepted: 03/06/2024] [Indexed: 03/17/2024]
Abstract
The scraps produced while processing packaging materials will cause a waste of resources. In this study, starch-based self-reinforced film (SSRF) using thermoplastic starch (TPS, 45 wt%) and polypropylene (PP, 53 wt%) was developed. The effect of extrusion times (1-4 times) on the film structure and performance was explored. The results show as the number of extrusions increases, the color of SSRF deepens from gray-white to brown, and the crystallinity increases. The mechanical properties of the four types of SSRF first increase and then decrease. The 2-SSRF has the best performance, with tensile strength of 13.23 MPa, elongation at break of 61.35%, Young's modulus of 1128.99 MPa, and flexural strength of 33.19 MPa. Proper extrusion improves the compatibility of TPS and PP. However, repeated extrusion will cause PP degradation and TPS carbonization, reducing interfacial interaction. This study developed new starch-based self-reinforced film and provided theoretical guidance for reusing packaging material scraps.
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Affiliation(s)
- Liping Wang
- State Key Laboratory of Food Science and Resources, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Dexiang Li
- State Key Laboratory of Food Science and Resources, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Lei Ye
- Jiangsu Longjun Environmental Protection Industrial Development Co., Ltd., Changzhou, Jiangsu 213000, PR China
| | - Chaohui Zhi
- Jiangsu Longjun Environmental Protection Industrial Development Co., Ltd., Changzhou, Jiangsu 213000, PR China
| | - Tao Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Ming Miao
- State Key Laboratory of Food Science and Resources, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
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2
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Liu S, Tang S, Lu Y, Su T, Wang Z. Preparation of Esterified Starches with Different Amylose Content and Their Blending with Polybutylene Succinate. Int J Mol Sci 2024; 25:6301. [PMID: 38928007 PMCID: PMC11203958 DOI: 10.3390/ijms25126301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 06/01/2024] [Accepted: 06/03/2024] [Indexed: 06/28/2024] Open
Abstract
Three types of starch with different amylose content were esterified and blended with polybutylene succinate (PBS) to obtain esterified manioc starch/PBS (EMS/PBS), esterified corn starch/PBS (ECS/PBS), and esterified waxy corn starch/PBS (EWS/PBS) composites. The EMS/PBS and ECS/PBS composites with high amylose content displayed typical V-type crystal structures. The original crystals of EWS, which had low amylose content, were disrupted during the esterification process. EWS exhibited the strongest interaction with PBS and the most favorable interface compatibility. The pyrolysis temperature was in order of EMS/PBS < ECS/PBS < EWS/PBS. The elongation at break of the three blends was higher than that of pure PBS. The esterification and plasticization of the EWS/PBS composite were the most comprehensive. The EWS/PBS composite showed the lowest storage modulus (G') and complex viscosity (η*). The interfacial bonding force of the composite materials increased with more amylopectin, decreasing intermolecular forces and destroying crystal structures, which decreased G' and η* and increased toughness. The EWS/PBS composite, with the least amylose content, had the best hydrophobicity and degradation performance.
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Affiliation(s)
- Shuning Liu
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China (S.T.); (Y.L.)
| | - Shi Tang
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China (S.T.); (Y.L.)
| | - Yuanhao Lu
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China (S.T.); (Y.L.)
| | - Tingting Su
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China (S.T.); (Y.L.)
| | - Zhanyong Wang
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang 110866, China
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3
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Eraslan K, Altınbay A, Nofar M. In-situ self-reinforcement of amorphous polylactide (PLA) through induced crystallites network and its highly ductile and toughened PLA/poly(butylene adipate-co-terephthalate) (PBAT) blends. Int J Biol Macromol 2024; 272:132936. [PMID: 38848828 DOI: 10.1016/j.ijbiomac.2024.132936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 05/26/2024] [Accepted: 06/04/2024] [Indexed: 06/09/2024]
Abstract
Crystallites of a semicrystalline polylactide (cPLA) were induced in an amorphous PLA (aPLA) and its blends with poly(butylene adipate-co-terephthalate) (PBAT) to achieve in-situ self-reinforced PLA based structures. The approach involved the melt blending of cPLA as a minor phase with aPLA and its blends with PBAT at processing temperatures below the crystal melting peak of cPLA. An injection molding (IM) process was first adopted to obtain self-reinforced PLA (SR-PLA) structures at aPLA/cPLA weight ratios of 100/0, 95/5, 90/10, 85/15, and 80/20. IM barrel and mold temperatures revealed crucial impacts on preserving the cPLA crystallites and thereby enhancing the final mechanical performance of SR-PLA (i.e., aPLA/cPLA) samples. SR-PLA samples at various aPLA/cPLA weight ratios of 100/0, 90/10, 80/20, and 70/30 were then melt blended with PBAT to produce SR-PLA/PBAT at a given ratio of 85/15. These blends were first prepared in an internal melt mixer (MM) to evaluate the rheological properties. The rheological analysis confirmed the significance of cPLA reinforcing efficiency within SR-PLA and its corresponding blends with PBAT. Similar SR-PLA/PBAT blends were also prepared using the IM process to explore their thermal and mechanical characteristics. The effect of cPLA concentrations in blends was distinctive, leading to significant enhancements in stain at break and toughness values. This was due to the increased crystallite network within the matrix, further refining PBAT droplets. Morphological analysis of the melt-processed blends through MM and IM also revealed that the PBAT droplets were further refined when the IM process was applied. The induced shear during the molding could have further elongated the cPLA crystallites towards a fiberlike structure, which could additionally cause the matrix viscosity to increase and refine the PBAT droplets.
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Affiliation(s)
- Kerim Eraslan
- Sustainable & Green Plastics Laboratory, Metallurgical & Materials Engineering Department, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Istanbul 34469, Turkey
| | - Aylin Altınbay
- Sustainable & Green Plastics Laboratory, Metallurgical & Materials Engineering Department, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Istanbul 34469, Turkey; Metallurgical & Materials Engineering Department, Faculty of Chemical and Metallurgical Engineering, Yildiz Technical University, Esenler, Istanbul 34220, Turkey
| | - Mohammadreza Nofar
- Sustainable & Green Plastics Laboratory, Metallurgical & Materials Engineering Department, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Istanbul 34469, Turkey.
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4
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Cravero F, Cavallini N, Arrigo R, Savorani F, Frache A. The Effect of Processing Conditions on the Microstructure of Homopolymer High-Density Polyethylene Blends: A Multivariate Approach. Polymers (Basel) 2024; 16:870. [PMID: 38611128 PMCID: PMC11013753 DOI: 10.3390/polym16070870] [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: 02/16/2024] [Revised: 03/19/2024] [Accepted: 03/20/2024] [Indexed: 04/14/2024] Open
Abstract
In this work, a multivariate approach was utilized for gaining some insights into the processing-structure-properties relationships in polyethylene-based blends. In particular, two high-density polyethylenes (HDPEs) with different molecular weights were melt-compounded using a twin-screw extruder, and the effects of the screw speed, processing temperature and composition on the microstructure of the blends were evaluated based on a Design of Experiment-multilinear regression (DoE-MLR) approach. The results of the thermal characterization, interpreted trough the MLR (multilinear regression) response surfaces, demonstrated that the composition of the blends and the screw rotation speed are the two most important parameters in determining the crystallinity of the materials. Furthermore, the rheological data were examined using a Principal Component Analysis (PCA) multivariate approach, highlighting also in this case the most prominent effect of the weight ratio of the two base polymers and the screw rotation speed.
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Affiliation(s)
- Fulvia Cravero
- Department of Applied Science and Technology, Politecnico di Torino, Viale Teresa Michel 5, 15121 Alessandria, Italy; (F.C.); (A.F.)
- Local INSTM Unit, 15121 Alessandria, Italy
| | - Nicola Cavallini
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; (N.C.); (F.S.)
| | - Rossella Arrigo
- Department of Applied Science and Technology, Politecnico di Torino, Viale Teresa Michel 5, 15121 Alessandria, Italy; (F.C.); (A.F.)
- Local INSTM Unit, 15121 Alessandria, Italy
| | - Francesco Savorani
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; (N.C.); (F.S.)
| | - Alberto Frache
- Department of Applied Science and Technology, Politecnico di Torino, Viale Teresa Michel 5, 15121 Alessandria, Italy; (F.C.); (A.F.)
- Local INSTM Unit, 15121 Alessandria, Italy
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5
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Fu J, Zhou Y, Xie H, Duan Q, Yang Y, Liu H, Yu L. From macro- to nano- scales: Effect of fibrillary celluloses from okara on performance of edible starch film. Int J Biol Macromol 2024; 262:129837. [PMID: 38302023 DOI: 10.1016/j.ijbiomac.2024.129837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 01/23/2024] [Accepted: 01/27/2024] [Indexed: 02/03/2024]
Abstract
Starch/cellulose composite is one of the most promising systems since both matrix and reinforce agent have same chemical unite glucose, which results in an excellent compatibility. In this work, edible starch film was developed by compositing starch with diverse fibrillary celluloses (FCs) derived from okara, employing a confluence of chemical interactions and mechanical influences. Since diameter of the FCs can be easily controlled by processing methodologies, it is the first time to systematically investigate the effect of diameter of the FCs from macro to nano-scales on the performances of starch-based film. The fabricated macro- and nano-fibrillar celluloses and reinforced starch films were characterized by scanning electron microscope, optical microscopy, Fourier transform infrared spectroscopy, Rheometer and contact angle. Results showed that the FCs increased modulus (about 170 %) and tensile strength (about 180 %) significantly as expected since they are well-compatible and some chemical interactions. It was found that nano-fibrillary celluloses (CNFs) improve the toughness (about 20 %) of the starch film more efficiently, which improved the well-recognized weakness of starch-based materials. The nano-scale roughness on the surface of the starch film caused by different shrinkage ratios between starch and CNFs during drying reduced water sensitivity, which is another well-recognized weakness of starch film.
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Affiliation(s)
- Jun Fu
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450002, China; Institute of Chemistry, Henan Academy of Sciences, Zhengzhou 450002, China
| | - Yinglin Zhou
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Huifang Xie
- Institute of Chemistry, Henan Academy of Sciences, Zhengzhou 450002, China
| | - Qinfei Duan
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yiwen Yang
- Institute of Chemistry, Henan Academy of Sciences, Zhengzhou 450002, China.
| | - Hongsheng Liu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Long Yu
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450002, China; Institute of Chemistry, Henan Academy of Sciences, Zhengzhou 450002, China; School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China.
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6
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Lu L, Liu X, Sun Y, Wang S, Liu J, Ge S, Wei T, Zhang H, Su J, Zhang Y, Fan W. Silk-Fabric Reinforced Silk for Artificial Bones. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2308748. [PMID: 38404231 DOI: 10.1002/adma.202308748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 01/01/2024] [Indexed: 02/27/2024]
Abstract
Bone implants for different body parts require varying mechanical properties, dimensions, and biodegradability rates. Currently, it is still challenging to produce artificial bones with perfect compatibility with human bones. In this study, a silk-fabric reinforced silk material (SFS) composed of pure silk with exceptional biocompatibility, osteogenesis, and biodegradability is reported, and demonstrates its outstanding performance as a bone implant material. The SFS is fabricated using a simple hot-pressing technique, with degummed silk fabric as the reinforcement and silk fibroin as the matrix. The SFS as a self-reinforced composite, has exceptional mechanical properties due to the almost perfect interface between the matrix and reinforcement. More importantly, its mechanical properties, biodegradability rates, and density can be tailored by adjusting the reinforcement structure and the ratio of the reinforcement to the matrix to align with the requirements for bone implantation in different parts of the human body. Besides, the SFS can improve osteoblastic proliferation and increase osteogenic activity, which is not the case with clinically used titanium alloy artificial bone. Therefore, the SFS holds significant potential to replace conventional metal or ceramic implants in the field of medical fracture repair.
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Affiliation(s)
- Linlin Lu
- School of Textile Science and Engineering, Key Laboratory of Functional Textile Material and Product of the Ministry of Education, Xi'an Polytechnic University, Xi'an, Shaanxi, 710048, China
| | - Xuqing Liu
- State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Yan Sun
- School of Textile Science and Engineering, Key Laboratory of Functional Textile Material and Product of the Ministry of Education, Xi'an Polytechnic University, Xi'an, Shaanxi, 710048, China
| | - Shujuan Wang
- School of Chemistry, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Jiantao Liu
- Department of Orthopedics, The First Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Shengbo Ge
- Co-Innovation Center of Efficient Processing and Utilization of Forestry Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China
| | - Tongxue Wei
- School of Textile Science and Engineering, Key Laboratory of Functional Textile Material and Product of the Ministry of Education, Xi'an Polytechnic University, Xi'an, Shaanxi, 710048, China
| | - Haiyang Zhang
- School of Textile Science and Engineering, Key Laboratory of Functional Textile Material and Product of the Ministry of Education, Xi'an Polytechnic University, Xi'an, Shaanxi, 710048, China
| | - Jinhui Su
- School of Textile Science and Engineering, Key Laboratory of Functional Textile Material and Product of the Ministry of Education, Xi'an Polytechnic University, Xi'an, Shaanxi, 710048, China
| | - Yingying Zhang
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Wei Fan
- School of Textile Science and Engineering, Key Laboratory of Functional Textile Material and Product of the Ministry of Education, Xi'an Polytechnic University, Xi'an, Shaanxi, 710048, China
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7
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King JA, Zhang X, Ries ME. The Formation of All-Silk Composites and Time-Temperature Superposition. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16103804. [PMID: 37241431 DOI: 10.3390/ma16103804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/05/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023]
Abstract
Extensive studies have been conducted on utilising natural fibres as reinforcement in composite production. All-polymer composites have attracted much attention because of their high strength, enhanced interfacial bonding and recyclability. Silks, as a group of natural animal fibres, possess superior properties, including biocompatibility, tunability and biodegradability. However, few review articles are found on all-silk composites, and they often lack comments on the tailoring of properties through controlling the volume fraction of the matrix. To better understand the fundamental basis of the formation of silk-based composites, this review will discuss the structure and properties of silk-based composites with a focus on employing the time-temperature superposition principle to reveal the corresponding kinetic requirements of the formation process. Additionally, a variety of applications derived from silk-based composites will be explored. The benefits and constraints of each application will be presented and discussed. This review paper will provide a useful overview of research on silk-based biomaterials.
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Affiliation(s)
- James A King
- School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK
| | - Xin Zhang
- School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK
| | - Michael E Ries
- School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK
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8
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Cao S, Wang Y, Qiu S, Zhang H, Guo J, Zhong GJ, Wang S, Li ZM. Tuning structure in 3D-printed scaffolds of polylactide by extensional stress and its influence on properties. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
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9
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Yang W, Wu T, Chen Y, Huang Q, Ao J, Ming M, Gao X, Li Z, Chen B. Bionic structure and blood compatibility of highly oriented homo-epitaxially crystallized poly(l-lactic acid). Int J Biol Macromol 2023; 227:749-761. [PMID: 36563816 DOI: 10.1016/j.ijbiomac.2022.12.192] [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: 09/09/2022] [Revised: 12/09/2022] [Accepted: 12/17/2022] [Indexed: 12/24/2022]
Abstract
A highly oriented poly(l-lactic acid) (PLLA), with a blood vessel-like biomimetic structure, was fabricated using solid-phase hot drawing technology and homo-epitaxial crystallization to improve the mechanical properties and biocompatibility of PLLA. Long chain branched PLLA (LCB-PLLA) was prepared through a two-step ring-opening reaction, and a consequent draw as high as 1000 % was achieved during the hot drawing. The modulus and tensile strength were found to have increased through the formation of oriented shish-kebab like crystals along the drawing direction during processing. Furthermore, PLLA nano-lamellae were formed on the surface of the oriented plates via the introduction of homo-epitaxial crystallization. The high degree of orientation and epitaxial crystallization substantially enhanced the biocompatibility of the PLLA by prolonging clotting time, decreasing the rate of hemolysis, and increasing the cell growth and reproduction of the osteoblasts.
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Affiliation(s)
- Wenchao Yang
- School of Material Science and Engineering of Xihua University, Chengdu 610039, China
| | - Ting Wu
- School of Material Science and Engineering of Xihua University, Chengdu 610039, China
| | - Yueling Chen
- School of Material Science and Engineering of Xihua University, Chengdu 610039, China
| | - Qingyi Huang
- School of Material Science and Engineering of Xihua University, Chengdu 610039, China
| | - Jinqing Ao
- School of Material Science and Engineering of Xihua University, Chengdu 610039, China
| | - Mei Ming
- Dechang Jinfeng Rubber Co., Ltd., Dechang County, 615500, China
| | - Xiaoyan Gao
- Sichuan Institute for Drug Control, Chengdu 610017, China
| | - Zhengqiu Li
- School of Material Science and Engineering of Xihua University, Chengdu 610039, China.
| | - Baoshu Chen
- School of Material Science and Engineering of Xihua University, Chengdu 610039, China.
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10
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Babu NBK, Mensah RA, Shanmugam V, Rashedi A, Athimoolam P, Aseer JR, Das O. Self‐reinforced polymer composites: An opportunity to recycle plastic wastes and their future trends. J Appl Polym Sci 2022. [DOI: 10.1002/app.53143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- NB Karthik Babu
- Department of Mechanical Engineering, Assam Energy Institute A Centre of Rajiv Gandhi Institute of Petroleum Technology Sivasagar India
| | - Rhoda Afriyie Mensah
- Structural and Fire Engineering Division, Department of Civil, Environmental and Natural Resources Engineering Luleå University of Technology Luleå Sweden
| | - Vigneshwaran Shanmugam
- Structural and Fire Engineering Division, Department of Civil, Environmental and Natural Resources Engineering Luleå University of Technology Luleå Sweden
| | - Ahmad Rashedi
- School of Mechanical and Aerospace Engineering Nanyang Technological University Singapore Singapore
| | - Pugazhenthi Athimoolam
- Department of Mechanical Engineering University College of Engineering Dindigul Dindigul India
| | - J. Ronald Aseer
- Department of Mechanical Engineering National Institute of Technology Puducherry Karaikal India
| | - Oisik Das
- Structural and Fire Engineering Division, Department of Civil, Environmental and Natural Resources Engineering Luleå University of Technology Luleå Sweden
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11
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Arkanji A, Ladelta V, Ntetsikas K, Hadjichristidis N. Synthesis and Thermal Analysis of Non-Covalent PS- b-SC- b-P2VP Triblock Terpolymers via Polylactide Stereocomplexation. Polymers (Basel) 2022; 14:polym14122431. [PMID: 35746007 PMCID: PMC9228810 DOI: 10.3390/polym14122431] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 06/13/2022] [Accepted: 06/13/2022] [Indexed: 02/01/2023] Open
Abstract
Polylactides (PLAs) are thermoplastic materials known for their wide range of applications. Moreover, the equimolar mixtures of poly(L-Lactide) (PLLA) and poly(D-Lactide) (PDLA) can form stereocomplexes (SCs), which leads to the formation of new non-covalent complex macromolecular architectures. In this work, we report the synthesis and characterization of non-covalent triblock terpolymers of polystyrene-b-stereocomplex PLA-b-poly(2-vinylpyridine) (PS-b-SC-b-P2VP). Well-defined ω-hydroxy-PS and P2VP were synthesized by "living" anionic polymerization high-vacuum techniques with sec-BuLi as initiator, followed by termination with ethylene oxide. The resulting PS-OH and P2VP-OH were used as macroinitiators for the ring-opening polymerization (ROP) of DLA and LLA with Sn(Oct)2 as a catalyst to afford PS-b-PDLA and P2VP-b-PLLA, respectively. SC formation was achieved by mixing PS-b-PDLA and P2VP-b-PLLA chloroform solutions containing equimolar PLAs segments, followed by precipitation into n-hexane. The molecular characteristics of the resulting block copolymers (BCPs) were determined by 1H NMR, size exclusion chromatography, and Fourier-transform infrared spectroscopy. The formation of PS-b-SC-b-P2VP and the effect of molecular weight variation of PLA blocks on the resulting polymers, were investigated by differential scanning calorimetry, X-ray powder diffraction, and circular dichroism spectroscopies.
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12
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Schirmeister CG, Mülhaupt R. Closing the Carbon Loop in the Circular Plastics Economy. Macromol Rapid Commun 2022; 43:e2200247. [PMID: 35635841 DOI: 10.1002/marc.202200247] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 05/07/2022] [Indexed: 11/06/2022]
Abstract
Today, plastics are ubiquitous in everyday life, problem solvers of modern technologies, and crucial for sustainable development. Yet the surge in global demand for plastics of the growing world population has triggered a tidal wave of plastic debris in the environment. Moving from a linear to a zero-waste and carbon-neutral circular plastic economy is vital for the future of the planet. Taming the plastic waste flood requires closing the carbon loop through plastic reuse, mechanical and molecular recycling, carbon capture, and use of the greenhouse gas carbon dioxide. In the quest for eco-friendly products, plastics do not need to be reinvented but tuned for reuse and recycling. Their full potential must be exploited regarding energy, resource, and eco efficiency, waste prevention, circular economy, climate change mitigation, and lowering environmental pollution. Biodegradation holds promise for composting and bio-feedstock recovery, but it is neither the Holy Grail of circular plastics economy nor a panacea for plastic littering. As an alternative to mechanical downcycling, molecular recycling enables both closed-loop recovery of virgin plastics and open-loop valorization, producing hydrogen, fuels, refinery feeds, lubricants, chemicals, and carbonaceous materials. Closing the carbon loop does not create a Perpetuum Mobile and requires renewable energy to achieve sustainability. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Carl G Schirmeister
- Freiburg Materials Research Center and Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Str. 31, D-79104, Freiburg, Germany
| | - Rolf Mülhaupt
- Sustainability Center, University of Freiburg, Ecker-Str. 4, D-79104, Freiburg, Germany
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13
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Guo YT, Shi C, Du TY, Cheng XY, Du FS, Li ZC. Closed-Loop Recyclable Aliphatic Poly(ester-amide)s with Tunable Mechanical Properties. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yu-Ting Guo
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry & Molecular Engineering, Peking University, Beijing 100871, China
| | - Changxia Shi
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry & Molecular Engineering, Peking University, Beijing 100871, China
| | - Tian-Yi Du
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry & Molecular Engineering, Peking University, Beijing 100871, China
| | - Xiang-Yue Cheng
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry & Molecular Engineering, Peking University, Beijing 100871, China
| | - Fu-Sheng Du
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry & Molecular Engineering, Peking University, Beijing 100871, China
| | - Zi-Chen Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry & Molecular Engineering, Peking University, Beijing 100871, China
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14
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Crystallization of Isotactic Polypropylene Nanocomposites with Fibrillated Poly(tetrafluoroethylene) under Elevated Pressure. Polymers (Basel) 2021; 14:polym14010088. [PMID: 35012111 PMCID: PMC8747199 DOI: 10.3390/polym14010088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/11/2021] [Accepted: 12/20/2021] [Indexed: 11/21/2022] Open
Abstract
Nanocomposites of isotactic polypropylene with 1–5 wt.% of fibrillated PTFE (PP/T) were prepared, and their crystallization during cooling under elevated pressure, in a wide pressure range, up to 300 MPa, as well as the resulting structure, were examined. The crystallization peak temperatures of PP/T, especially with 3 and 5 wt.% of PTFE, exceeded by up to 13 °C those of neat PP. Moreover, a fine-grain structure was formed in PP/T in the entire pressure range, which proved the ability of the fibrillated PTFE to nucleate crystallization of PP in the γ-form under elevated pressure. This also resulted in a higher crystallinity level developed in the γ-domain, before the temperature range of the α-domain was reached during cooling. Hence, the γ-content increased in comparison to that in neat PP, under the pressure up to 200 MPa, especially under 50–100 MPa.
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15
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Wu B, Kong C, Cai Y, Ye L, Chen S, Li S, Zhao X. Formation and reinforcing effect of epitaxial oriented crystallization of polyethylene induced by self‐assembly nucleating agent under stress. POLYM INT 2021. [DOI: 10.1002/pi.6347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Buyong Wu
- State Key Laboratory of Polymer Materials Engineering Polymer Research Institute of Sichuan University Chengdu China
| | - Chen Kong
- State Key Laboratory of Polymer Materials Engineering Polymer Research Institute of Sichuan University Chengdu China
| | - Yudong Cai
- Synthetic Resin Laboratory Petrochemical Research Institute, PetroChina Beijing China
| | - Lin Ye
- State Key Laboratory of Polymer Materials Engineering Polymer Research Institute of Sichuan University Chengdu China
| | - Shangtao Chen
- Synthetic Resin Laboratory Petrochemical Research Institute, PetroChina Beijing China
| | - Shuanhong Li
- Synthetic Resin Laboratory Petrochemical Research Institute, PetroChina Beijing China
| | - Xiaowen Zhao
- State Key Laboratory of Polymer Materials Engineering Polymer Research Institute of Sichuan University Chengdu China
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16
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Developing Edible Starch Film Used for Packaging Seasonings in Instant Noodles. Foods 2021; 10:foods10123105. [PMID: 34945656 PMCID: PMC8700853 DOI: 10.3390/foods10123105] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/02/2021] [Accepted: 12/08/2021] [Indexed: 02/06/2023] Open
Abstract
Edible starch-based film was developed for packaging seasoning applied in instant noodles. The edible film can quickly dissolve into hot water so that the seasoning bag can mix in the soup of instant noodles during preparation. To meet the specific requirements of the packaging, such as reasonable high tensile properties, ductility under arid conditions, and low gas permeability, hydroxypropyl cornstarch with various edible additives from food-grade ingredients were applied to enhance the functionality of starch film. In this work, xylose was used as a plasticizer, cellulose crystals were used as a reinforcing agent, and laver was used to decrease gas permeability. The microstructures, interface, and compatibility of various components and film performance were investigated using an optical microscope under polarized light, scanning electron microscope, gas permeability, and tensile testing. The relationship was established between processing methodologies, microstructures, and performances. The results showed that the developed starch-based film have a modulus of 960 MPa, tensile strength of 36 Mpa with 14% elongation, and water vapor permeability less than 5.8 g/m2.h under 20% RH condition at room temperature (25 °C), which meets the general requirements of the flavor bag packaging used in instant noodles.
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17
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Correlation between thermomechanical behavior and density of UHMWPE (Ultra-High Molecular Weight PolyEthylene) reinforcements embedded in self-reinforced composites, following a parametric study of the process used. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02698-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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18
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Circular Design of Composite Products: A Framework Based on Insights from Literature and Industry. SUSTAINABILITY 2021. [DOI: 10.3390/su13137223] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Composite materials are an attractive material choice as they enable lightweight, low-maintenance products with a long lifespan. Recycling these materials, however, remains a challenge. Homogeneous material composition and the use of thermoset matrices complicate reprocessing, and result in low-grade recyclate. This means that closing the loop for these materials in a circular economy remains challenging, especially for glass fibre-reinforced thermoset composites. For a circular economy, products need to be designed to preserve product functionality, material properties, and economic value for as long as possible. However, recovery strategies, design aspects and their interconnectedness are currently largely unexplored for products containing fibre-reinforced polymers. The aim of this study was to identify circular strategies and determine design aspects for products containing composites. To achieve this, we conducted a systematic literature review and consulted experts. The circular strategies are largely similar to generic circular economy strategies as far as product integrity is concerned. However, on a material level, we identified additional approaches, the most notable of which is structural reuse, which preserves the material quality and thereby value. The design aspects were clustered and positioned along the product design process to support implementation. Finally, the strategies and design aspects we identified were brought together in a framework to support product design and design research for products containing composite materials in the context of a circular economy.
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19
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Purnama P, Samsuri M, Iswaldi I. Properties Enhancement of High Molecular Weight Polylactide Using Stereocomplex Polylactide as a Nucleating Agent. Polymers (Basel) 2021; 13:1725. [PMID: 34070263 PMCID: PMC8197296 DOI: 10.3390/polym13111725] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 05/10/2021] [Accepted: 05/12/2021] [Indexed: 12/21/2022] Open
Abstract
As one of the most attractive biopolymers nowadays in terms of their sustainability, degradability, and material tune-ability, the improvement of polylactide (PLA) homopolymer properties by studying the utilization of stereocomplex polylactide (s-PLA) effectively and efficiently is needed. In this sense, we have studied the utilization of s-PLA compared to poly D-lactide (PDLA) homopolymers as a nucleating agent for PLA homopolymers. The mechanical and thermal properties and crystallization behavior of PLA homopolymers in the presence of nucleating agents have been evaluated using a universal testing machine, differential scanning calorimeter, and X-ray diffractometer instruments, respectively. PDLA and s-PLA materials can be used to increase the thermal and mechanical properties of poly L-lactide (PLLA) homopolymers. The s-PLA materials increased the mechanical properties by increasing crystallinity of the PLLA homopolymers. PLLA/s-PLA enhanced mechanical properties to a certain level (5% s-PLA content), then decreased them due to higher s-PLA materials affecting the brittleness of the blends. PDLA homopolymers increased mechanical properties by forming stereocomplex PLA with PLLA homopolymers. Non-isothermal and isothermal evaluation showed that s-PLA materials were more effective at enhancing PLLA homopolymer properties through nucleating agent mechanism.
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Affiliation(s)
- Purba Purnama
- School of Applied STEM, Universitas Prasetiya Mulya, Tangerang, Banten 15339, Indonesia;
| | - Muhammad Samsuri
- Chemical Engineering Department, Universitas Bhayangkara Jakarta Raya, Bekasi 17121, Indonesia;
| | - Ihsan Iswaldi
- School of Applied STEM, Universitas Prasetiya Mulya, Tangerang, Banten 15339, Indonesia;
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20
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Vannucchi de Camargo F, da Silva Fernandes E, ten Caten CS, Alves AK, Bergmann CP, Minak G. In-Plane Shear Strength of Single-Lap Co-Cured Joints of Self-Reinforced Polyethylene Composites. MATERIALS 2021; 14:ma14061517. [PMID: 33808932 PMCID: PMC8003681 DOI: 10.3390/ma14061517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 03/05/2021] [Accepted: 03/08/2021] [Indexed: 11/20/2022]
Abstract
The present study introduces the analysis of single-lap co-cured joints of thermoplastic self-reinforced composites made with reprocessed low-density polyethylene (LDPE) and reinforced by ultra-high-molecular-weight polyethylene (UHMWPE) fibers, along with a micromechanical analysis of its constituents. A set of optimal processing conditions for manufacturing these joints by hot-press is proposed through a design of experiment using the response surface method to maximize their in-plane shear strength by carrying tensile tests on co-cured tapes. Optimal processing conditions were found at 1 bar, 115 °C, and 300 s, yielding joints with 6.88 MPa of shear strength. The shear failure is generally preceded by multiple debonding-induced longitudinal cracks both inside and outside the joint due to accumulated transversal stress. This composite demonstrated to be an interesting structural material to be more widely applied in industry, possessing extremely elevated specific mechanical properties, progressive damage of co-cured joints (thus avoiding unannounced catastrophic failures) and ultimate recyclability.
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Affiliation(s)
- Felipe Vannucchi de Camargo
- Post-Graduation Program in Mining, Metallurgical and Materials Engineering, Federal University of Rio Grande do Sul, Av. Osvaldo Aranha 99, Porto Alegre 90035-190, Brazil; (A.K.A.); (C.P.B.)
- Department of Industrial Engineering (DIN), Alma Mater Studiorum—Università di Bologna, Via Fontanelle 40, 47121 Forlì, Italy;
- Correspondence:
| | - Eduardo da Silva Fernandes
- Post-Graduation Program in Industrial Engineering, Federal University of Rio Grande do Sul, Av. Osvaldo Aranha 99, Porto Alegre 90035-190, Brazil; (E.d.S.F.); (C.S.t.C.)
| | - Carla Schwengber ten Caten
- Post-Graduation Program in Industrial Engineering, Federal University of Rio Grande do Sul, Av. Osvaldo Aranha 99, Porto Alegre 90035-190, Brazil; (E.d.S.F.); (C.S.t.C.)
| | - Annelise Kopp Alves
- Post-Graduation Program in Mining, Metallurgical and Materials Engineering, Federal University of Rio Grande do Sul, Av. Osvaldo Aranha 99, Porto Alegre 90035-190, Brazil; (A.K.A.); (C.P.B.)
| | - Carlos Pérez Bergmann
- Post-Graduation Program in Mining, Metallurgical and Materials Engineering, Federal University of Rio Grande do Sul, Av. Osvaldo Aranha 99, Porto Alegre 90035-190, Brazil; (A.K.A.); (C.P.B.)
| | - Giangiacomo Minak
- Department of Industrial Engineering (DIN), Alma Mater Studiorum—Università di Bologna, Via Fontanelle 40, 47121 Forlì, Italy;
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21
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Naseem R, Tzivelekis C, German MJ, Gentile P, Ferreira AM, Dalgarno K. Strategies for Enhancing Polyester-Based Materials for Bone Fixation Applications. Molecules 2021; 26:molecules26040992. [PMID: 33668466 PMCID: PMC7917714 DOI: 10.3390/molecules26040992] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 02/09/2021] [Accepted: 02/09/2021] [Indexed: 11/16/2022] Open
Abstract
Polyester-based materials are established options, regarding the manufacturing of bone fixation devices and devices in routine clinical use. This paper reviews the approaches researchers have taken to develop these materials to improve their mechanical and biological performances. Polymer blending, copolymerisation, and the use of particulates and fibre bioceramic materials to make composite materials and surface modifications have all been studied. Polymer blending, copolymerisation, and particulate composite approaches have been adopted commercially, with the primary focus on influencing the in vivo degradation rate. There are emerging opportunities in novel polymer blends and nanoscale particulate systems, to tune bulk properties, and, in terms of surface functionalisation, to optimise the initial interaction of devices with the implanted environment, offering the potential to improve the clinical performances of fracture fixation devices.
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Affiliation(s)
- Raasti Naseem
- School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, UK; (P.G.); (A.M.F.); (K.D.)
- Correspondence:
| | - Charalampos Tzivelekis
- School of Dental Sciences, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK; (C.T.); (M.J.G.)
| | - Matthew J. German
- School of Dental Sciences, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK; (C.T.); (M.J.G.)
| | - Piergiorgio Gentile
- School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, UK; (P.G.); (A.M.F.); (K.D.)
| | - Ana M. Ferreira
- School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, UK; (P.G.); (A.M.F.); (K.D.)
| | - Kenny Dalgarno
- School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, UK; (P.G.); (A.M.F.); (K.D.)
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22
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Synthesis and Application of Arylaminophosphazene as a Flame Retardant and Catalyst for the Polymerization of Benzoxazines. Polymers (Basel) 2021; 13:polym13020263. [PMID: 33466828 PMCID: PMC7830697 DOI: 10.3390/polym13020263] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 01/08/2021] [Accepted: 01/10/2021] [Indexed: 01/01/2023] Open
Abstract
A novel type of phosphazene containing an additive that acts both as a catalyst and as a flame retardant for benzoxazine binders is presented in this study. The synthesis of a derivative of hexachlorocyclotriphosphazene (HCP) and meta-toluidine was carried out in the medium of the latter, which made it possible to achieve the complete substitution of chlorine atoms in the initial HCP. Thermal and flammability characteristics of modified compositions were investigated. The modifier catalyzes the process of curing and shifts the beginning of reaction from 222.0 °C for pure benzoxazine to 205.9 °C for composition with 10 phr of modifier. The additive decreases the glass transition temperature of compositions. Achievement of the highest category of flame resistance (V-0 in accordance with UL-94) is ensured both by increasing the content of phenyl residues in the composition and by the synergistic effect of phosphorus and nitrogen. A brief study of the curing kinetics disclosed the complex nature of the reaction. An accurate two-step model is obtained using the extended Prout–Tompkins equation for both steps.
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23
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24
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Development of self-reinforced low-density polyethylene using γ-irradiation cross-linked polyethylene fibres. Radiat Phys Chem Oxf Engl 1993 2020. [DOI: 10.1016/j.radphyschem.2019.108655] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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25
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Duan Q, Jiang T, Xue C, Liu H, Liu F, Alee M, Ali A, Chen L, Yu L. Preparation and characterization of starch/enteromorpha/nano-clay hybrid composites. Int J Biol Macromol 2020; 150:16-22. [PMID: 32007549 DOI: 10.1016/j.ijbiomac.2020.01.283] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 01/28/2020] [Accepted: 01/28/2020] [Indexed: 10/25/2022]
Abstract
Environmentally friendly and biodegradable hybrid composites of starch/enteromorpha/nano-clay were developed. Enteromorpha was used as cheaper filler since it is a waste from marine pollution, while nano-clay acted as a reinforcing agent. The microstructures and performance of these composites were investigated by SEM, DMA, XRD, TGA and tensile testing. Enteromorpha has a hollow tubular thallus structure with very weak mechanical properties, so it is not expected to have the ability to reinforce the starch matrix even though they have very a good interface. However, the granulated fine particles of enteromorpha can mix well with the starch matrix and reduce weak points. Furthermore, the delaminated clay by water and ultrasonic treatment reinforced the mechanical properties of the starch-based materials. The results showed that the hybrid composite containing up to 40% enteromorpha reinforced with nano-clay still has similar or even slightly better mechanical properties compared with pure starch-based materials. Since all components are hydrophilic natural materials, the interfaces between them are very good, and the composites are environmentally friendly and biodegradable.
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Affiliation(s)
- Qingfei Duan
- Centre for Polymer from Renewable Resources, SFSE, South China University of Technology, Guangzhou 510640, China
| | - Tianyu Jiang
- Centre for Polymer from Renewable Resources, SFSE, South China University of Technology, Guangzhou 510640, China
| | - Changhu Xue
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong 266109, China
| | - Hongsheng Liu
- Centre for Polymer from Renewable Resources, SFSE, South China University of Technology, Guangzhou 510640, China; Sino-Singapore International Joint Research Institute, Knowledge City, Guangzhou 510663, China.
| | - Fengsong Liu
- Centre for Polymer from Renewable Resources, SFSE, South China University of Technology, Guangzhou 510640, China; Sino-Singapore International Joint Research Institute, Knowledge City, Guangzhou 510663, China
| | - Mahafooj Alee
- Centre for Polymer from Renewable Resources, SFSE, South China University of Technology, Guangzhou 510640, China
| | - Amjad Ali
- Centre for Polymer from Renewable Resources, SFSE, South China University of Technology, Guangzhou 510640, China; Depart. of Agriculture & Food Technology, Karakorum International University, Gilgit, Pakistan
| | - Ling Chen
- Centre for Polymer from Renewable Resources, SFSE, South China University of Technology, Guangzhou 510640, China
| | - Long Yu
- Centre for Polymer from Renewable Resources, SFSE, South China University of Technology, Guangzhou 510640, China; Sino-Singapore International Joint Research Institute, Knowledge City, Guangzhou 510663, China.
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26
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Akram N, Zia KM, Saeed M, Usman M, Iqbal SZ, Shafi A, Khan WG. Influence of cornstarch on thermomechanical behavior of poly(vinyl) chloride bioplastics. J Appl Polym Sci 2020. [DOI: 10.1002/app.48493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nadia Akram
- Department of ChemistryGovernment College University Faisalabad Faisalabad 38000 Pakistan
| | - Khalid Mahmood Zia
- Department of ChemistryGovernment College University Faisalabad Faisalabad 38000 Pakistan
| | - Muhammad Saeed
- Department of ChemistryGovernment College University Faisalabad Faisalabad 38000 Pakistan
| | - Muhammad Usman
- Department of ChemistryGovernment College University Faisalabad Faisalabad 38000 Pakistan
| | - Shahzad Zafar Iqbal
- Department of Applied ChemistryGovernment College University Faisalabad Faisalabad 38000 Pakistan
| | - Amina Shafi
- Department of ChemistryGovernment College University Faisalabad Faisalabad 38000 Pakistan
| | - Waheed Gul Khan
- Department of ChemistryQuaid‐i‐Azam University Islamabad 45320 Pakistan
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27
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Kim DW, Kim YS, Jung YC, Kim SY, Song JM, Kim M, Kim J. Development of a continuous manufacturing process for self-reinforced composites using multi-step highly drawn polypropylene tapes. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122267] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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28
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Structure and self-reinforcing mechanism of biaxially oriented polyethylene pipes produced by solid phase die drawing. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121556] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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29
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Jiang KY, Zhang Y, Yang L, Lu Y. Study on Influence of Co-Injection Molding Process on Self-Reinforcing Characteristics of Self-Reinforced Polypropylene Composite via Visualization. INT POLYM PROC 2019. [DOI: 10.3139/217.3773] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Self-reinforced polymer composites (SRCs), which are fabricated by combining the same type of polymer with different properties into one body, have high specific strength, no interfacial heterogeneity, and ease of recycling. To better understand the relationship between the molding process and mechanical properties of SRCs, the co-injection molding process was used in this study to process SRCs samples. Further, a self-developed visualized experimental device was used to observe the flow of the polymer melt directly during co-injection molding. From the visualization results, it was found that the tensile properties of SRCs are positively correlated with the absolute value of the slopes of the velocity change at lower melt temperature. When the melt temperature increases to a certain degree, the tensile properties of SRCs are much lower than that of lower melt temperature. The shear rate inside the melt flow and the shear rate between the melt and the matrix wall play a major role in the self-reinforcing characteristics of the SRC.
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Affiliation(s)
- K.-Y. Jiang
- Engineering Research Center of Plastic Molding Products of Ministry of Education , Dalian University of Technology, Dalian , PRC
| | - Y. Zhang
- Engineering Research Center of Plastic Molding Products of Ministry of Education , Dalian University of Technology, Dalian , PRC
| | - L. Yang
- Engineering Research Center of Plastic Molding Products of Ministry of Education , Dalian University of Technology, Dalian , PRC
| | - Y. Lu
- Engineering Research Center of Plastic Molding Products of Ministry of Education , Dalian University of Technology, Dalian , PRC
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30
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Worch JC, Prydderch H, Jimaja S, Bexis P, Becker ML, Dove AP. Stereochemical enhancement of polymer properties. Nat Rev Chem 2019. [DOI: 10.1038/s41570-019-0117-z] [Citation(s) in RCA: 114] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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31
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Ali A, Ali S, Yu L, Liu H, Khalid S, Hussain A, Qayum MMN, Ying C. Preparation and characterization of starch‐based composite films reinforced by apricot and walnut shells. J Appl Polym Sci 2019. [DOI: 10.1002/app.47978] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Amjad Ali
- School of Food Science and EngineeringSouth China University of Technology Guangzhou 510640 China
- Department of Food and AgricultureKarakoram International University Gilgit 15100 Pakistan
| | - Sartaj Ali
- Department of Food and AgricultureKarakoram International University Gilgit 15100 Pakistan
| | - Long Yu
- School of Food Science and EngineeringSouth China University of Technology Guangzhou 510640 China
- Sino‐Singapore International Joint Research InstituteGuangzhou Knowledge City Guangzhou 510663 China
| | - Hongsheng Liu
- School of Food Science and EngineeringSouth China University of Technology Guangzhou 510640 China
- Sino‐Singapore International Joint Research InstituteGuangzhou Knowledge City Guangzhou 510663 China
| | - Saud Khalid
- School of Food Science and EngineeringSouth China University of Technology Guangzhou 510640 China
| | - Azhar Hussain
- Department of Food and AgricultureKarakoram International University Gilgit 15100 Pakistan
| | | | - Chen Ying
- School of Food Science and EngineeringSouth China University of Technology Guangzhou 510640 China
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32
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Preparation and characterization of edible starch film reinforced by laver. Int J Biol Macromol 2019; 129:944-951. [DOI: 10.1016/j.ijbiomac.2019.02.045] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 02/06/2019] [Accepted: 02/07/2019] [Indexed: 01/28/2023]
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33
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Han L, He Y, An R, Wang X, Zhang Y, Shi L, Ran R. Mussel-inspired, robust and self-healing nanocomposite hydrogels: Effective reusable absorbents for removal both anionic and cationic dyes. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.02.054] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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34
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Ali A, Chen Y, Liu H, Yu L, Baloch Z, Khalid S, Zhu J, Chen L. Starch-based antimicrobial films functionalized by pomegranate peel. Int J Biol Macromol 2019; 129:1120-1126. [PMID: 30218726 DOI: 10.1016/j.ijbiomac.2018.09.068] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 09/09/2018] [Accepted: 09/11/2018] [Indexed: 11/16/2022]
Abstract
In this work, pomegranate peel (PGP) as an antimicrobial agent as well as a reinforcing agent was utilized in developing starch-based films. Hydroxypropyl high-amylose starch plasticized by water and glycerol was used in this work. The microstructure and performance of films were investigated using scanning electron microscope (SEM), optical microscope (OM), X-ray diffraction (XRD), dynamic mechanical analyzer, tensile testing, drop impact testing and disc diffusion test. Results clearly demonstrated that PGP inhibited the growth of both gram-positive (S. aureus) and gram-negative (Salmonella) bacteria. Meanwhile, PGP also increased Young's modulus, tensile strength and stiffness of the starch-based films. Both OM and SEM observations indicated reasonably good compatibility between starch and PGP particles. The XRD results indicated that PGP retained its semi-crystalline structure in the film, which can be used to explain the mechanism of mechanical reinforcement. Since all the components are food ingredients, so it is expected that the developed material can be used as an edible film and food grade packaging material.
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35
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Kale RD, Gorade VG. Potential application of medical cotton waste for self-reinforced composite. Int J Biol Macromol 2019; 124:25-33. [DOI: 10.1016/j.ijbiomac.2018.11.196] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 11/15/2018] [Accepted: 11/20/2018] [Indexed: 11/16/2022]
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36
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Developing acrylated epoxidized soybean oil coating for improving moisture sensitivity and permeability of starch-based film. Int J Biol Macromol 2019; 125:370-375. [DOI: 10.1016/j.ijbiomac.2018.11.239] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Revised: 11/13/2018] [Accepted: 11/26/2018] [Indexed: 11/20/2022]
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37
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38
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Hees T, Zhong F, Stürzel M, Mülhaupt R. Tailoring Hydrocarbon Polymers and All-Hydrocarbon Composites for Circular Economy. Macromol Rapid Commun 2018; 40:e1800608. [PMID: 30417498 DOI: 10.1002/marc.201800608] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 10/03/2018] [Indexed: 11/08/2022]
Abstract
The world population will rapidly grow from 7 to 9 billion by 2050 and this will parallel a surging annual plastics consumption from today's 350 million tons to well beyond 1 billion tons. The switch from a linear economy with its throwaway culture to a circular economy with efficient reuse of waste plastics is therefore mandatory. Hydrocarbon polymers, accounting for more than half the world's plastics production, enable closed-loop recycling and effective product-stewardship systems. High-molar-mass hydrocarbons serve as highly versatile, cost-, resource-, eco- and energy-efficient, durable lightweight materials produced by solvent-free, environmentally benign catalytic olefin polymerization. Nanophase separation and alignment of unentangled hydrocarbon polymers afford 100% recyclable self-reinforcing all-hydrocarbon composites without requiring the addition of either alien fibers or hazardous nanoparticles. Recycling of durable hydrocarbons is far superior to biodegradation. The facile thermal degradation enables liquefaction and quantitative recovery of low molar mass hydrocarbon oil and gas. Teamed up with biomass-to-liquid and carbon dioxide-to-fuel conversions, powered by renewable energy, waste hydrocarbons serve as renewable hydrocarbon feedstocks for the synthesis of high molar mass hydrocarbon materials. Herein, an overview is given on how innovations in catalyst and process technology enable tailoring of advanced recyclable hydrocarbon materials meeting the needs of sustainable development and a circular economy.
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Affiliation(s)
- Timo Hees
- Freiburg Materials Research Center of the Albert-Ludwigs University Freiburg, Stefan-Meier Straße 21, D-79104, Freiburg, Germany.,Institute for Macromolecular Chemistry of the Albert-Ludwigs-University Freiburg, Stefan-Meier-Straße 31, D-79104, Freiburg, Germany
| | - Fan Zhong
- Freiburg Materials Research Center of the Albert-Ludwigs University Freiburg, Stefan-Meier Straße 21, D-79104, Freiburg, Germany.,Institute for Macromolecular Chemistry of the Albert-Ludwigs-University Freiburg, Stefan-Meier-Straße 31, D-79104, Freiburg, Germany
| | - Markus Stürzel
- Freiburg Materials Research Center of the Albert-Ludwigs University Freiburg, Stefan-Meier Straße 21, D-79104, Freiburg, Germany.,Institute for Macromolecular Chemistry of the Albert-Ludwigs-University Freiburg, Stefan-Meier-Straße 31, D-79104, Freiburg, Germany
| | - Rolf Mülhaupt
- Freiburg Materials Research Center of the Albert-Ludwigs University Freiburg, Stefan-Meier Straße 21, D-79104, Freiburg, Germany.,Institute for Macromolecular Chemistry of the Albert-Ludwigs-University Freiburg, Stefan-Meier-Straße 31, D-79104, Freiburg, Germany
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39
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Campodoni E, Heggset EB, Rashad A, Ramírez-Rodríguez GB, Mustafa K, Syverud K, Tampieri A, Sandri M. Polymeric 3D scaffolds for tissue regeneration: Evaluation of biopolymer nanocomposite reinforced with cellulose nanofibrils. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 94:867-878. [PMID: 30423774 DOI: 10.1016/j.msec.2018.10.026] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 07/30/2018] [Accepted: 10/04/2018] [Indexed: 10/28/2022]
Abstract
Biopolymers such as gelatin (Gel) and cellulose nanofibrils (CNF) have many of the essential requirements for being used as scaffolding materials in tissue regeneration; biocompatibility, surface chemistry, ability to generate homogeneous hydrogels and 3D structures with suitable pore size and interconnection, which allows cell colonization and proliferation. The purpose of this study was to investigate whether the mechanical behaviour of the Gel matrix can be improved by means of functionalization with cellulose nanofibrils and proper cross-linking treatments. Blending processes were developed to achieve a polymer nanocomposite incorporating the best features of both biopolymers: biomimicry of the Gel and structural reinforcement by the CNF. The designed 3D structures underline interconnected porosity achieved by freeze-drying process, improved mechanical properties and chemical stability that are tailored by CNF addition and different cross-linking approaches. In vitro evaluations reveal the preservation of the biocompatibility of Gel and its good interaction with cells by promoting cell colonization and proliferation. The results support the addition of cellulose nanofibrils to improve the mechanical behaviour of 3D porous structures suitable as scaffolding for tissue regeneration.
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Affiliation(s)
- Elisabetta Campodoni
- Institute of Science and Technology for Ceramics-National Research Council (ISTEC-CNR), Faenza, Italy.
| | | | - Ahmad Rashad
- Department of Clinical Dentistry, University of Bergen, Bergen, Norway
| | - Gloria B Ramírez-Rodríguez
- BioNanoMetals Group, Department of Inorganic Chemistry, Facultad de Ciencias, Universidad de Granada, Granada
| | - Kamal Mustafa
- Department of Clinical Dentistry, University of Bergen, Bergen, Norway
| | - Kristin Syverud
- RISE-PFI, Trondheim, Norway; Department of Chemical Engineering, Norwegian University of Science and Technology, Trondheim, Norway
| | - Anna Tampieri
- Institute of Science and Technology for Ceramics-National Research Council (ISTEC-CNR), Faenza, Italy
| | - Monica Sandri
- Institute of Science and Technology for Ceramics-National Research Council (ISTEC-CNR), Faenza, Italy.
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40
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Zhang G, Tong X, Hui L, Chen T, Mu J, Li W, Zhou Q. Blending ultrahigh-molecular-weight polyethylene and poly(ethylene/10-undecen-1-ol) in one nascent particle. J Appl Polym Sci 2018. [DOI: 10.1002/app.46652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ganchao Zhang
- Institute of Polymer Engineering and Science, School of Material Science and Chemical Engineering; Ningbo University; Ningbo 315211 Zhejiang People's Republic of China
| | - Xueqing Tong
- Institute of Polymer Engineering and Science, School of Material Science and Chemical Engineering; Ningbo University; Ningbo 315211 Zhejiang People's Republic of China
| | - Lei Hui
- Institute of Polymer Engineering and Science, School of Material Science and Chemical Engineering; Ningbo University; Ningbo 315211 Zhejiang People's Republic of China
| | - Tao Chen
- Institute of Polymer Engineering and Science, School of Material Science and Chemical Engineering; Ningbo University; Ningbo 315211 Zhejiang People's Republic of China
| | - Jingshan Mu
- Institute of Polymer Engineering and Science, School of Material Science and Chemical Engineering; Ningbo University; Ningbo 315211 Zhejiang People's Republic of China
| | - Wei Li
- Institute of Polymer Engineering and Science, School of Material Science and Chemical Engineering; Ningbo University; Ningbo 315211 Zhejiang People's Republic of China
| | - Qi Zhou
- School of Materials and Chemical Engineering; Ningbo University of Technology; Ningbo 315016 Zhejiang People's Republic of China
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41
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Kurokawa N, Hotta A. Thermomechanical properties of highly transparent self-reinforced polylactide composites with electrospun stereocomplex polylactide nanofibers. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.08.018] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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42
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Tong L, Wei R, You Y, Liu X. Post Self-Crosslinking of Phthalonitrile-Terminated Polyarylene Ether Nitrile Crystals. Polymers (Basel) 2018; 10:E640. [PMID: 30966674 PMCID: PMC6403659 DOI: 10.3390/polym10060640] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 05/28/2018] [Accepted: 06/05/2018] [Indexed: 11/17/2022] Open
Abstract
A novel phthalonitrile-terminated polyaryl ether nitrile (PEN-Ph) was synthesized and characterized. The crystallization behavior coexisting with the crosslinking behavior in the PEN-Ph system was confirmed by rheological measurements. DSC was applied to study the crystallization kinetics and crosslinking reaction kinetics. Through the Avrami equation modified by Jeziorny, the nonisothermal crystallization kinetics were analyzed, and the Avrami exponent of about 2.2 was obtained. The analysis results of more intuitive polaring optical microscopy (POM) and SEM indicated that the shape of the crystals is similar to spherical. Moreover, the activation energy of the crystallization behavior and crosslinking behavior were obtained by the Kissinger method, and the values were about 152.7 kJ·mol-1 and 174.8 kJ·mol-1, respectively. This suggests that the activation energy of the crystallization behavior is lower than that of the crosslinking behavior, indicating that the crystallization behavior is more likely to occur than the crosslinking behavior and the crystals of PEN-Ph can be self-crosslinked to form single-polymer composites.
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Affiliation(s)
- Lifen Tong
- Research Branch of Advanced Functional Materials, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Renbo Wei
- Research Branch of Advanced Functional Materials, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Yong You
- Research Branch of Advanced Functional Materials, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Xiaobo Liu
- Research Branch of Advanced Functional Materials, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China.
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43
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Wei Z, Syed NA, Muhammad L, Jung-IL S. Fabrication of self-reinforced polyester composites and their mechanical and flame retardant properties. ADVANCES IN POLYMER TECHNOLOGY 2017. [DOI: 10.1002/adv.21918] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Zhang Wei
- Department of Mechanical Engineering; Changwon National University; Changwon Korea
| | - Nabeel Ahmed Syed
- Department of Mechanical Engineering; Changwon National University; Changwon Korea
| | - Latif Muhammad
- Department of Mechanical Engineering; Changwon National University; Changwon Korea
| | - Song Jung-IL
- Department of Mechanical Engineering; Changwon National University; Changwon Korea
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44
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Hofmann D, Kurek A, Thomann R, Schwabe J, Mark S, Enders M, Hees T, Mülhaupt R. Tailored Nanostructured HDPE Wax/UHMWPE Reactor Blends as Additives for Melt-Processable All-Polyethylene Composites and in Situ UHMWPE Fiber Reinforcement. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01891] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daniel Hofmann
- Freiburg Materials
Research Center
FMF and Institute for Macromolecular Chemistry, Albert-Ludwigs-University Freiburg, Stefan-Meier-Str. 21, Freiburg D-79104, Germany
| | - Alexander Kurek
- Freiburg Materials
Research Center
FMF and Institute for Macromolecular Chemistry, Albert-Ludwigs-University Freiburg, Stefan-Meier-Str. 21, Freiburg D-79104, Germany
| | - Ralf Thomann
- Freiburg Materials
Research Center
FMF and Institute for Macromolecular Chemistry, Albert-Ludwigs-University Freiburg, Stefan-Meier-Str. 21, Freiburg D-79104, Germany
| | - Jeremia Schwabe
- Freiburg Materials
Research Center
FMF and Institute for Macromolecular Chemistry, Albert-Ludwigs-University Freiburg, Stefan-Meier-Str. 21, Freiburg D-79104, Germany
| | - Stefan Mark
- Freiburg Materials
Research Center
FMF and Institute for Macromolecular Chemistry, Albert-Ludwigs-University Freiburg, Stefan-Meier-Str. 21, Freiburg D-79104, Germany
| | - Markus Enders
- Freiburg Materials
Research Center
FMF and Institute for Macromolecular Chemistry, Albert-Ludwigs-University Freiburg, Stefan-Meier-Str. 21, Freiburg D-79104, Germany
| | - Timo Hees
- Freiburg Materials
Research Center
FMF and Institute for Macromolecular Chemistry, Albert-Ludwigs-University Freiburg, Stefan-Meier-Str. 21, Freiburg D-79104, Germany
| | - Rolf Mülhaupt
- Freiburg Materials
Research Center
FMF and Institute for Macromolecular Chemistry, Albert-Ludwigs-University Freiburg, Stefan-Meier-Str. 21, Freiburg D-79104, Germany
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45
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Mijares JL, Agaliotis E, Bernal CR, Mollo M. Self-reinforced polypropylene composites based on low-cost commercial woven and non-woven fabrics. POLYM ADVAN TECHNOL 2017. [DOI: 10.1002/pat.4093] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- José Luis Mijares
- National Commission of Atomic Energy (CNEA); Av. Gral. Paz 1499 1650 San Martín Argentina
| | - Eliana Agaliotis
- Institute of Technology in Polymers and Nanotechnology (ITPN), Faculty of Engineering; University of Buenos Aires; Av. Las Heras 2214, C1127AAR Buenos Aires Argentina
| | - Celina R. Bernal
- Institute of Technology in Polymers and Nanotechnology (ITPN), Faculty of Engineering; University of Buenos Aires; Av. Las Heras 2214, C1127AAR Buenos Aires Argentina
| | - Mariana Mollo
- Centre of Research and Development for the Plastics Industry (INTI-Plastics); Av. Gral. Paz 5445, B1650KNA San Martín Argentina
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46
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Ali A, Yu L, Liu H, Khalid S, Meng L, Chen L. Preparation and characterization of starch-based composite films reinforced by corn and wheat hulls. J Appl Polym Sci 2017. [DOI: 10.1002/app.45159] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Amjad Ali
- Center for Polymer from Renewable Resources, School of Food Science and Engineering; South China University of Technology; Guangzhou 510640 China
| | - Long Yu
- Center for Polymer from Renewable Resources, School of Food Science and Engineering; South China University of Technology; Guangzhou 510640 China
- Sino-Singapore International Joint Research Institute, Guangzhou Knowledge City; Guangzhou 510663 China
| | - Hongsheng Liu
- Center for Polymer from Renewable Resources, School of Food Science and Engineering; South China University of Technology; Guangzhou 510640 China
| | - Saud Khalid
- Center for Polymer from Renewable Resources, School of Food Science and Engineering; South China University of Technology; Guangzhou 510640 China
| | - Linghan Meng
- Center for Polymer from Renewable Resources, School of Food Science and Engineering; South China University of Technology; Guangzhou 510640 China
| | - Ling Chen
- Center for Polymer from Renewable Resources, School of Food Science and Engineering; South China University of Technology; Guangzhou 510640 China
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47
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Huang YF, Xu JZ, Li ZM. Advances in Enhancing Mechanical Performance of Ultrahigh Molecular Weight Polyethylene Used for Total Joint Replacement. ACS SYMPOSIUM SERIES 2017. [DOI: 10.1021/bk-2017-1253.ch014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Yan-Fei Huang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, 610065, Chengdu, People’s Republic of China
| | - Jia-Zhuang Xu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, 610065, Chengdu, People’s Republic of China
| | - Zhong-Ming Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, 610065, Chengdu, People’s Republic of China
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48
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Xie L, Sun X, Tian Y, Dong F, He M, Xiong Y, Zheng Q. Self-nanofibrillation strategy to an unusual combination of strength and toughness for poly(lactic acid). RSC Adv 2017. [DOI: 10.1039/c6ra27643a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The self-nanofibrillation strategy paves a new way to an unprecedented combination of strength and toughness for pure PLA.
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Affiliation(s)
- Lan Xie
- Department of Polymer Materials and Engineering
- College of Materials and Metallurgy
- Guizhou University
- Guiyang 550025
- China
| | - Xin Sun
- Department of Polymer Materials and Engineering
- College of Materials and Metallurgy
- Guizhou University
- Guiyang 550025
- China
| | - Yaozhu Tian
- Department of Polymer Materials and Engineering
- College of Materials and Metallurgy
- Guizhou University
- Guiyang 550025
- China
| | - Fuping Dong
- Department of Polymer Materials and Engineering
- College of Materials and Metallurgy
- Guizhou University
- Guiyang 550025
- China
| | - Min He
- Department of Polymer Materials and Engineering
- College of Materials and Metallurgy
- Guizhou University
- Guiyang 550025
- China
| | - Yuzhu Xiong
- Department of Polymer Materials and Engineering
- College of Materials and Metallurgy
- Guizhou University
- Guiyang 550025
- China
| | - Qiang Zheng
- Department of Polymer Materials and Engineering
- College of Materials and Metallurgy
- Guizhou University
- Guiyang 550025
- China
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49
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Stürzel M, Hees T, Enders M, Thomann Y, Blattmann H, Mülhaupt R. Nanostructured Polyethylene Reactor Blends with Tailored Trimodal Molar Mass Distributions as Melt-Processable All-Polymer Composites. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01407] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Markus Stürzel
- Freiburg
Materials Research Center (FMF) and Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Str. 21, D-79104 Freiburg, Germany
| | - Timo Hees
- Freiburg
Materials Research Center (FMF) and Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Str. 21, D-79104 Freiburg, Germany
| | - Markus Enders
- Institute
for Inorganic Chemistry, University of Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Yi Thomann
- Freiburg
Materials Research Center (FMF) and Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Str. 21, D-79104 Freiburg, Germany
| | - Hannes Blattmann
- Freiburg
Materials Research Center (FMF) and Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Str. 21, D-79104 Freiburg, Germany
| | - Rolf Mülhaupt
- Freiburg
Materials Research Center (FMF) and Institute for Macromolecular Chemistry, University of Freiburg, Stefan-Meier-Str. 21, D-79104 Freiburg, Germany
- Sustainability
Center Freiburg, Ecker-Strasse 4, D-79104 Freiburg, Germany
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50
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Stürzel M, Kurek AG, Hees T, Thomann Y, Blattmann H, Mülhaupt R. Multisite catalyst mediated polymer nanostructure formation and self-reinforced polyethylene reactor blends with improved toughness/stiffness balance. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.09.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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