1
|
Pu M, Fang C, Zhou X, Wang D, Lin Y, Lei W, Li L. Recent Advances in Environment-Friendly Polyurethanes from Polyols Recovered from the Recycling and Renewable Resources: A Review. Polymers (Basel) 2024; 16:1889. [PMID: 39000744 PMCID: PMC11244063 DOI: 10.3390/polym16131889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Revised: 06/25/2024] [Accepted: 06/27/2024] [Indexed: 07/17/2024] Open
Abstract
Polyurethane (PU) is among the most universal polymers and has been extensively applied in many fields, such as construction, machinery, furniture, clothing, textile, packaging and biomedicine. Traditionally, as the main starting materials for PU, polyols deeply depend on petroleum stock. From the perspective of recycling and environmental friendliness, advanced PU synthesis, using diversified resources as feedstocks, aims to develop versatile products with excellent properties to achieve the transformation from a fossil fuel-driven energy economy to renewable and sustainable ones. This review focuses on the recent development in the synthesis and modification of PU by extracting value-added monomers for polyols from waste polymers and natural bio-based polymers, such as the recycled waste polymers: polyethylene terephthalate (PET), PU and polycarbonate (PC); the biomaterials: vegetable oil, lignin, cashew nut shell liquid and plant straw; and biomacromolecules: polysaccharides and protein. To design these advanced polyurethane formulations, it is essential to understand the structure-property relationships of PU from recycling polyols. In a word, this bottom-up path provides a material recycling approach to PU design for printing and packaging, as well as biomedical, building and wearable electronics applications.
Collapse
Affiliation(s)
- Mengyuan Pu
- School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an 710048, China; (M.P.); (D.W.)
- School of Printing, Packaging Engineering and Digital Media Technology, Xi’an University of Technology, Xi’an 710048, China; (Y.L.); (W.L.)
| | - Changqing Fang
- School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an 710048, China; (M.P.); (D.W.)
- School of Printing, Packaging Engineering and Digital Media Technology, Xi’an University of Technology, Xi’an 710048, China; (Y.L.); (W.L.)
| | - Xing Zhou
- School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an 710048, China; (M.P.); (D.W.)
- School of Printing, Packaging Engineering and Digital Media Technology, Xi’an University of Technology, Xi’an 710048, China; (Y.L.); (W.L.)
| | - Dong Wang
- School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an 710048, China; (M.P.); (D.W.)
- School of Printing, Packaging Engineering and Digital Media Technology, Xi’an University of Technology, Xi’an 710048, China; (Y.L.); (W.L.)
| | - Yangyang Lin
- School of Printing, Packaging Engineering and Digital Media Technology, Xi’an University of Technology, Xi’an 710048, China; (Y.L.); (W.L.)
| | - Wanqing Lei
- School of Printing, Packaging Engineering and Digital Media Technology, Xi’an University of Technology, Xi’an 710048, China; (Y.L.); (W.L.)
| | - Lu Li
- Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi’an 710021, China;
- Shaanxi Collaborative Innovation Center of Industrial Auxiliary Chemistry and Technology, Shaanxi University of Science and Technology, Xi’an 710021, China
| |
Collapse
|
2
|
Guo X, Liang J, Wang Z, Qin J, Zhang Q, Zhu S, Zhang K, Zhu H. Tough, Recyclable, and Degradable Elastomers for Potential Biomedical Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2210092. [PMID: 36929503 DOI: 10.1002/adma.202210092] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 02/27/2023] [Indexed: 05/19/2023]
Abstract
Elastomers have many industrial, medical and commercial applications, however, their huge demand raises an important question of how to dispose of the out-of-service elastomers. Ideal elastomers that are concurrently tough, recyclable, and degradable are in urgent need, but their preparation remains a rigorous challenge. Herein, a polycaprolactone (PCL) based polyurethane elastomer is designed and prepared to meet this demand. Owing to the presence of dynamic coordination bond and the occurrence of strain-induced crystallization, the obtained elastomer exhibits a high toughness of ≈372 MJ m-3 and an unprecedented fracture energy of ≈646 kJ m-2 , which is much higher than natural rubber (≈50 MJ m-3 for toughness and ≈10 kJ m-2 for fracture energy). In addition, the elastomer can be recycled at least three times using solvent without losing its mechanical properties and can be degraded by lipase in ≈2 months. Finally, biological experiments demonstrate that the elastomer possesses good biocompatibility and can facilitate wound healing in mice when used as sutures. It is believed that the obtained elastomer meets the requirements for next-generation elastomers and is expected to be used in emerging fields such as biomedicine, flexible electronics, robotics and beyond.
Collapse
Affiliation(s)
- Xiwei Guo
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, 518172, P. R. China
| | - Jiaheng Liang
- School of Life Science, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Zhifen Wang
- College of Materials Science and Engineering, Hainan University, Haikou, 570228, P. R. China
| | - Jianliang Qin
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, 518172, P. R. China
| | - Qi Zhang
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, 518172, P. R. China
| | - Shiping Zhu
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, 518172, P. R. China
| | - Kun Zhang
- School of Life Science, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - He Zhu
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, 518172, P. R. China
| |
Collapse
|
3
|
Feng Z, Zhao W, Jin L, Zhang J, Xue B, Ni Y. Environmentally friendly strategy to access self-healable, reprocessable and recyclable chitin, chitosan, and sodium alginate based polysaccharide-vitrimer hybrid materials. Int J Biol Macromol 2023; 240:124531. [PMID: 37085067 DOI: 10.1016/j.ijbiomac.2023.124531] [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: 02/11/2023] [Revised: 04/13/2023] [Accepted: 04/16/2023] [Indexed: 04/23/2023]
Abstract
Natural polysaccharides show enviable advantages for preparation of sustainable hybrid materials. However, in most cases, complex chemical modifications of natural polysaccharides are required, which not only causes changes of the inherent properties of polysaccharides, but also increases the manufacturing costs of the final materials. Therefore, it is highly desired to develop efficient and low-cost ways to access polysaccharides-containing hybrid materials. In this work, we report the environmentally friendly preparation of a new kind of polysaccharide-based materials, called polysaccharide-vitrimer hybrid materials, for the first time. The vitrimer synthesis and hybridization with polysaccharides can be achieved via a convenient one-pot method in absence of solvent and catalyst. In addition, time-consuming and labor-intensive physical/chemical modifications of natural polysaccharides are completely avoided. The resultant hybrid materials show good mechanical performance (tensile toughness is up to 13.7 MJ/m3), high thermal stability (Td,max is up to 457 °C), fast self-healing ability (self-healing efficiency is up to 99 % within 20s at 80 °C) and excellent reprocessability and recyclability (at least three cycles). Especially, conductive polysaccharide-vitrimer hybrid materials could be readily prepared from the resultant materials, exhibiting novel applications as flexible sensors and electromagnetic shielding materials (the EMI SE is up to 24.93 dB).
Collapse
Affiliation(s)
- Zihao Feng
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, PR China; Key Laboratory of Paper Based Functional Materials, China National Light Industry, Xi'an 710021, PR China; Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, Xi'an 710021, PR China
| | - Wei Zhao
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, PR China; Key Laboratory of Paper Based Functional Materials, China National Light Industry, Xi'an 710021, PR China; Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, Xi'an 710021, PR China.
| | - Liuping Jin
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, PR China; Key Laboratory of Paper Based Functional Materials, China National Light Industry, Xi'an 710021, PR China; Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, Xi'an 710021, PR China
| | - Jiarong Zhang
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, PR China
| | - Bailiang Xue
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, PR China; Key Laboratory of Paper Based Functional Materials, China National Light Industry, Xi'an 710021, PR China; Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, Xi'an 710021, PR China
| | - Yonghao Ni
- Department of Chemical Engineering, University of New Brunswick, Fredericton E3B 5A3, New Brunswick, Canada; Department of Chemical and biomedical Engineering, University of Maine, Orono, ME 04469, USA
| |
Collapse
|
4
|
Sukpaita T, Chirachanchai S, Pimkhaokham A, Ampornaramveth RS. Effect of Storage Time and Temperature on the Bioactivity of a Chitosan-Derived Epigenetic Modulation Scaffold. Mar Drugs 2023; 21:md21030175. [PMID: 36976224 PMCID: PMC10054179 DOI: 10.3390/md21030175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/08/2023] [Accepted: 03/09/2023] [Indexed: 03/16/2023] Open
Abstract
The appropriate storage protocol is one of the main limitations of translating tissue engineering technology to commercialized clinical applications. Recently, the development of a chitosan-derived composite scaffold incorporated with bioactive molecules has been reported as an excellent material to repair a critical size bony defect in mice calvaria. This study aims to determine the storage time and appropriate storage temperature of Chitosan/Biphasic Calcium Phosphate/Trichostatin A composite scaffold (CS/BCP/TSA scaffold) in vitro. The mechanical properties and in vitro bioactivity of trichostatin A (TSA) released from CS/BCP/TSA scaffolds in different storage times and temperatures were evaluated. Different storage times (0, 14, and 28 days) and temperatures (−18, 4, and 25 °C) did not affect the porosity, compressive strength, shape memory, and amount of TSA released. However, scaffolds stored at 25 °C and 4 °C were found to lose their bioactivity after 3- and 7-day storage periods, respectively. Thus, the CS/BCP/TSA scaffold should be stored in freezing conditions to preserve the long-term stability of TSA.
Collapse
Affiliation(s)
- Teerawat Sukpaita
- Center of Excellence on Oral Microbiology and Immunology, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand
- Department of Oral Surgery, Faculty of Dentistry, Naresuan University, Phitsanulok 65000, Thailand
| | - Suwabun Chirachanchai
- Bioresources Advanced Materials (B2A), The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, Thailand
- Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok 10330, Thailand
| | - Atiphan Pimkhaokham
- Bioresources Advanced Materials (B2A), The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, Thailand
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand
| | - Ruchanee Salingcarnboriboon Ampornaramveth
- Center of Excellence on Oral Microbiology and Immunology, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand
- Department of Microbiology, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand
- Correspondence: ; Tel.: +66-81-422-4546
| |
Collapse
|
5
|
Papadopoulos AN. Nanotechnology and Wood Science. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:691. [PMID: 36839059 PMCID: PMC9966417 DOI: 10.3390/nano13040691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 02/09/2023] [Indexed: 06/18/2023]
Abstract
Nanotechnology, in a sense, is not entirely a new concept [...].
Collapse
Affiliation(s)
- Antonios N Papadopoulos
- Laboratory of Wood Chemistry and Technology, Department of Forestry and Natural Environment, International Hellenic University, GR-661 00 Drama, Greece
| |
Collapse
|
6
|
Hybrid composites of epoxidized polyurethane and novolac resins cured by poly(amidoamine) dendrimer-grafted graphene oxide. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-021-03785-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
7
|
Gao H, Ge K, Xu Y, Wang Y, Lu M, Wei Y, Zhu Q, Han X, Huang Q, Cao Z. Controlled release of minocycline in hydroxyapatite/chitosan composite for periodontal bone defect repair. Dent Mater J 2022; 41:346-352. [PMID: 35321974 DOI: 10.4012/dmj.2021-217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim was to obtain bone repair materials with sustained release of minocycline and evaluate the effect in periodontal bone defect repair. Two complex material, hydroxyapatite/chitosan (HA/CS) and minocycline-hydroxyapatite/chitosan (Mino-HA/CS), were prepared by the co-precipitation method. The physical and chemical property, cytotoxicity, release of minocycline and the bacteriostasis examination of the materials were evaluated, they were applied to the rabbit model of mandible bone defect to evaluate their effects on the regeneration of periodontal bone defect. After minocycline was added to HA/CS, the setting time of the material was prolonged, the compressive strength was reduced and the pore size and porosity were increased significantly. The pH value did not change obviously and stayed in the neutral range. Mino-HA/CS could promote the growth of osteoblasts effectively compared with control medium. In vivo, Mino-HA/CS material showed better effect of promoting periodontal bone formation.
Collapse
Affiliation(s)
- Haochen Gao
- Department of Stomatology, Changzheng Hospital, Naval Medical University.,Department of Stomatology, Changhai Hospital, Naval Medical University
| | - Kuikui Ge
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University
| | - Yuqiang Xu
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University
| | - Yihan Wang
- Shanghai High-Tech United Bio-Technological R&D Co., Ltd
| | - Min Lu
- Shanghai High-Tech United Bio-Technological R&D Co., Ltd
| | - Yibo Wei
- Department of Stomatology, Changhai Hospital, Naval Medical University
| | - Qiang Zhu
- Department of Stomatology, Changhai Hospital, Naval Medical University
| | - Xu Han
- Department of Stomatology, Changhai Hospital, Naval Medical University
| | - Qingshan Huang
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University.,Shanghai High-Tech United Bio-Technological R&D Co., Ltd
| | - Zhizhong Cao
- Department of Stomatology, Changhai Hospital, Naval Medical University
| |
Collapse
|
8
|
Gupta A, Mekonnen TH. Cellulose nanocrystals enabled sustainable polycaprolactone based shape memory polyurethane bionanocomposites. J Colloid Interface Sci 2021; 611:726-738. [PMID: 34876266 DOI: 10.1016/j.jcis.2021.11.174] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 11/22/2021] [Accepted: 11/27/2021] [Indexed: 10/19/2022]
Abstract
In recent years, shape memory polyurethanes have gained substantial attention and are targeted for a range of smart and functional materials. In this work, the development of nanocrystalline celluloses (CNCs) enabled polycaprolactone-based shape memory polyurethane biocomposite using an in situ one-pot reactions is reported. The incorporation of up to 10 wt% CNCs resulted in a remarkable enhancement in the tensile strength at yield (from 0.2 MPa to 7.2 MPa), tensile strength at break (167% improvement), and modulus of elasticity (from 3.5 to 139.3 MPa) while maintaining the elongation at break. This was attributed to the simultaneous action of CNCs as a nucleating agent for crystallization and highly compatibilized reinforcing agent of the network. Moreover, the in situ incorporation of CNCs enhanced the shape memory capability of polyurethanes, which enables its employment in functional material applications, such as the biomedical sector. The intimate interfacial adhesion between the CNCs and the polymer matrix, which promoted shape fixating and recovery, was confirmed by fractured surface morphology studies. Rheology characterizations provided strong evidence that the addition of CNCs increased the shape fixity attributed to the stiffness of CNCs below the glass transition temperature (Tg) compared to the neat PU in conjuncture with the higher Tg of CNCs. Overall, the developed polymer nanocomposites are appealing materials for biomedical applications.
Collapse
Affiliation(s)
- Arvind Gupta
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON, Canada
| | - Tizazu H Mekonnen
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON, Canada; Institute of Polymer Research, University of Waterloo, Waterloo, ON, Canada; Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON, Canada.
| |
Collapse
|
9
|
Synthesis of shape memory electroconductive polyurethane with self-healing capability as an intelligent biomedical scaffold for bone tissue engineering. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123694] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
10
|
Stroea L, Chibac-Scutaru AL, Melinte V. Aliphatic Polyurethane Elastomers Quaternized with Silane-Functionalized TiO 2 Nanoparticles with UV-Shielding Features. Polymers (Basel) 2021; 13:1318. [PMID: 33923812 PMCID: PMC8074198 DOI: 10.3390/polym13081318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/12/2021] [Accepted: 04/15/2021] [Indexed: 11/17/2022] Open
Abstract
The design of high-performance nanocomposites with improved mechanical, thermal or optical properties compared to starting polymers has generated special interest due to their use in a wide range of targeted applications. In the present work, polymer nanocomposites composed of polyurethane elastomers based on polycaprolactone or polycaprolactone/poly(ethylene glycol) soft segments and titanium dioxide (TiO2) nanoparticles as an inorganic filler were prepared and characterized. Initially, the surface of TiO2 nanoparticles was modified with (3-iodopropyl) trimethoxysilane as a coupling agent, and thereafter, the tertiary amine groups from polyurethane hard segments were quaternized with the silane-modified TiO2 nanoparticles in order to ensure covalent binding of the nanoparticles on the polymeric chains. In the preparation of polymer nanocomposites, two quaternization degrees were taken into account (1/1 and 1/0.5 molar ratios), and the resulting nanocomposite coatings were characterized by various methods (Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, contact angle, thermogravimetric analysis, dynamic mechanical thermal analysis). The mechanical parameters of the samples evaluated by tensile testing confirm the elastomeric character of the polyurethanes and of the corresponding composites, indicating the obtaining of highly flexible materials. The absorbance/transmittance measurements of PU/TiO2 thin films in the wavelength range of 200-700 nm show that these partially block UV-A radiation and all UV-B radiation from sunlight and could possibly be used as UV-protective elastomeric coatings.
Collapse
Affiliation(s)
| | | | - Violeta Melinte
- Polyaddition and Photochemistry Department, Petru Poni Institute of Macromolecular Chemistry, 41 A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (L.S.); (A.-L.C.-S.)
| |
Collapse
|
11
|
Antony GJM, Poulose P, Aruna ST, Shanuja SK, Gnanamani A, Suneetha YK, Raja S. Synthesis and Properties of a New Chitosan‐Based Shape Memory Polymer and its Composites. ChemistrySelect 2021. [DOI: 10.1002/slct.202004712] [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)
| | - Priya Poulose
- Structural Technological Division CSIR-National Aerospace Laboratories Bangalore 560017 India
| | | | | | - Arumugam Gnanamani
- Microbiology Division CSIR- Central Leather Research Institute Chennai 600020
| | | | - Samikkannu Raja
- Structural Technological Division CSIR-National Aerospace Laboratories Bangalore 560017 India
| |
Collapse
|
12
|
Gorbunova MA, Anokhin DV, Badamshina ER. Recent Advances in the Synthesis and Application of Thermoplastic Semicrystalline Shape Memory Polyurethanes. POLYMER SCIENCE SERIES B 2020. [DOI: 10.1134/s1560090420050073] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
13
|
Preparation and characterization of diatomite and hydroxyapatite reinforced porous polyurethane foam biocomposites. Sci Rep 2020; 10:13308. [PMID: 32764640 PMCID: PMC7413266 DOI: 10.1038/s41598-020-70421-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 07/30/2020] [Indexed: 11/09/2022] Open
Abstract
Porous three-dimensional (3D) polyurethane-based biocomposites were produced utilizing diatomite and hydroxyapatite as fillers. Diatomite and Hydroxyapatite (HA) were utilized to reinforce the morphological, chemical, mechanical, and thermal properties of polyurethane foam (PUF). Diatomite and Hydroxyapatite were added into polyurethane at variable percentages 0, 1, 2, and 5. The mechanical properties of PUF were analyzed by the compression test. According to the compression test results, the compressive strength of the polyurethane foam is highest in the reinforced foam at 1% by weight hydroxyapatite compared to other reinforced PUFs. Scanning electron microscopy (SEM) images presented structural differences on foam by adding fillers. Functional groups of PUF were defined by Fourier Transform Infrared Spectroscopy (FTIR) and the thermal behavior of PUF was studied with Thermogravimetric Analysis (TGA). The obtained results revealed that PUF/HA biocomposites indicated higher thermal degradation than PUF/Diatomite biocomposites.
Collapse
|
14
|
Gupta A, Kim BS. Soft, Biological and Composite Nanomaterials. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:nano10081488. [PMID: 32751184 PMCID: PMC7466581 DOI: 10.3390/nano10081488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 07/27/2020] [Accepted: 07/28/2020] [Indexed: 06/11/2023]
Abstract
The progress in the area of nanotechnology has opened the door for the fabrication of soft, biological and composite nanomaterials for targeted applications [...].
Collapse
|
15
|
Piotrowska-Kirschling A, Brzeska J. The Effect of Chitosan on the Chemical Structure, Morphology, and Selected Properties of Polyurethane/Chitosan Composites. Polymers (Basel) 2020; 12:polym12051205. [PMID: 32466336 PMCID: PMC7285005 DOI: 10.3390/polym12051205] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 05/23/2020] [Accepted: 05/23/2020] [Indexed: 01/30/2023] Open
Abstract
Materials science is an interdisciplinary area of studies. This science focuses on the influence of the physico-chemical properties of materials on their application in human everyday lives. The materials’ synthesis should be developed in accordance with sustainable development. Polyurethanes (PUR) represent a significant consumption of plastic in the world. Modification of PUR, e.g., with polysaccharide of natural origin (chitosan, Chit), should have a positive effect on their functional properties and degradability in the natural environment. The basic parameters affecting the scope and direction of changes are the size and quantity of the chitosan particles. The impact assessment of chitosan on the chemical structure, morphology, thermal properties, crystallinity, mechanical properties, flammability, water sorption, adsorption properties, degradability, and biological activity of PUR/Chit composites (without other additives) is discussed in this article. To the best of our knowledge, recent literature does not contain a study discussing the direct impact of the presence of chitosan in the structure of PUR/Chit composite on its properties, regardless of the intended uses. This paper provides an overview of publications, which presents the results of a study on the effect of adding chitosan in polyurethane/chitosan composites without other additives on the properties of polyurethane.
Collapse
|
16
|
Mahanta AK, Maiti P. Injectable Hydrogel through Hydrophobic Grafting on Chitosan for Controlled Drug Delivery. ACS APPLIED BIO MATERIALS 2019; 2:5415-5426. [DOI: 10.1021/acsabm.9b00733] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Arun Kumar Mahanta
- School of Materials Science and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221 005, India
| | - Pralay Maiti
- School of Materials Science and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221 005, India
| |
Collapse
|
17
|
Shape Memory Polyurethane and its Composites for Various Applications. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9214694] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The inherent capability to deform and reform in a predefined environment is a unique property existing in shape memory polyurethane. The intrinsic shape memory ability of the polyurethane is due to the presence of macro domains of soft and hard segments in its bulk, which make this material a potential candidate for several applications. This review is focused on manifesting the applicability of shape memory polyurethane and its composites/blends in various domains, especially to human health such as shielding of electromagnetic interference, medical bandage development, bone tissue engineering, self-healing, implants development, etc. A coherent literature review highlighting the prospects of shape memory polyurethane in versatile applications has been presented.
Collapse
|
18
|
Papadopoulos AN, Bikiaris DN, Mitropoulos AC, Kyzas GZ. Nanomaterials and Chemical Modifications for Enhanced Key Wood Properties: A Review. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E607. [PMID: 31013808 PMCID: PMC6523757 DOI: 10.3390/nano9040607] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 03/23/2019] [Accepted: 04/05/2019] [Indexed: 12/18/2022]
Abstract
This work briefly reviews the research milestones in the area of wood chemical modification, focusing on acetylated and furfurylated wood which have been scaled up, and exploits the solutions that nanotechnology can offer to wood protection as an alternative green innovative approach in improving key wood properties, namely the dimensional stability when subjected to a fluctuating moisture content and a susceptibility to biodegradability by microorganisms. Recently, nanomaterials were found to be able applicable in wood science. The target is to improve some special physicochemical characteristics of wood in order to resist extreme conditions (climate, bacteria, etc.), giving an enhanced potentiality. It is well-established that the wood cell wall shows a porosity of molecular scale dimensions; this is caused by the partial filling of spaces between the microfibrils of the cellulose mainly by polyoses and lignin. The small-sized nanoparticles can deeply and effectively penetrate into the wood, altering its surface chemistry, improving its properties, and therefore, resulting in a hyper-performance product.
Collapse
Affiliation(s)
- Antonios N Papadopoulos
- Laboratory of Wood Chemistry and Technology, Eastern Macedonia and Thrace Institute of Technology, GR-661 00 Drama, Greece.
| | - Dimitrios N Bikiaris
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, Greece.
| | - Athanasios C Mitropoulos
- Hephaestus Advanced Laboratory, Eastern Macedonia and Thrace Institute of Technology, GR-654 04 Kavala, Greece.
| | - George Z Kyzas
- Hephaestus Advanced Laboratory, Eastern Macedonia and Thrace Institute of Technology, GR-654 04 Kavala, Greece.
| |
Collapse
|