1
|
Şucu T, Wang M, Shaver MP. Degradable and Reprocessable Resins from a Dioxolanone Cross-Linker. Macromolecules 2023; 56:1625-1632. [PMID: 36874530 PMCID: PMC9979638 DOI: 10.1021/acs.macromol.2c02560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/19/2023] [Indexed: 02/11/2023]
Abstract
Chemically cross-linked polymers offer excellent temperature and solvent resistance, but their high dimensional stability precludes reprocessing. The renewed demand for sustainable and circular polymers from public, industry, and government stakeholders has increased research into recycling thermoplastics, but thermosets have often been overlooked. To address this need for more sustainable thermosets, we have developed a novel bis(1,3-dioxolan-4-one) monomer, derived from the naturally occurring l-(+)-tartaric acid. This compound can be used as a cross-linker and copolymerized in situ with common cyclic esters such as l-lactide, ε-caprolactone, and δ-valerolactone to produce cross-linked, degradable polymers. The structure-property relationships and the final network properties were tuned by both co-monomer choice and composition, with properties ranging from resilient solids with tensile strengths of 46.7 MPa to elastomers with elongations up to 147%. In addition to exhibiting properties rivalling those of commercial thermosets, the synthesized resins could be recovered at end-of-life through triggered degradation or reprocessing. Accelerated hydrolysis experiments showed the materials fully degraded to tartaric acid and the corresponding oligomers from 1 to 14 days under mild basic conditions and in a matter of minutes in the presence of a transesterification catalyst. The vitrimeric reprocessing of networks was demonstrated at elevated temperatures, and rates could be tuned by modifying the concentration of the residual catalyst. This work develops new thermosets, and indeed their glass fiber composites, with an unprecedented ability to tune degradability and high performance by creating resins from sustainable monomers and a bio-derived cross-linker.
Collapse
Affiliation(s)
- Theona Şucu
- Department of Materials, Engineering Building A, University of Manchester, Oxford Road M13 9PL, U.K.,Sustainable Materials Innovation Hub, Henry Royce Institute, University of Manchester, Manchester M13 9PL, U.K
| | - Meng Wang
- Department of Materials, Engineering Building A, University of Manchester, Oxford Road M13 9PL, U.K.,Sustainable Materials Innovation Hub, Henry Royce Institute, University of Manchester, Manchester M13 9PL, U.K
| | - Michael P Shaver
- Department of Materials, Engineering Building A, University of Manchester, Oxford Road M13 9PL, U.K.,Sustainable Materials Innovation Hub, Henry Royce Institute, University of Manchester, Manchester M13 9PL, U.K
| |
Collapse
|
2
|
Mechanical Characteristics and Bioactivity of Nanocomposite Hydroxyapatite/Collagen Coated Titanium for Bone Tissue Engineering. BIOENGINEERING (BASEL, SWITZERLAND) 2022; 9:bioengineering9120784. [PMID: 36550990 PMCID: PMC9774233 DOI: 10.3390/bioengineering9120784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/26/2022] [Accepted: 12/05/2022] [Indexed: 12/13/2022]
Abstract
In the present study, we have analyzed the mechanical characteristics and bioactivity of titanium coating with hydroxyapatite/bovine collagen. Hydroxyapatite (HAp) was synthesized from a Pinctada maxima shell and has a stoichiometry (Ca/P) of 1.72 and a crystallinity of 92%, suitable for coating materials according to ISO and Food and Drug Administration (FDA) standards. Titanium (Ti) substrate coatings were fabricated at HAp concentrations of 1% (Ti/HAp-1) and 3% (Ti/HAp-3) and a bovine collagen concentration of 1% (Ti/HAp/Coll) by the electrophoresis deposition (EPD) method. The compressive strength of Ti/HAp-1 and Ti/HAp-3 was 87.28 and 86.19 MPa, respectively, and it increased significantly regarding the control/uncoated Ti (46.71 MPa). Furthermore, the Ti/HAp-coll (69.33 MPa) has lower compressive strength due to collagen substitution (1%). The bioactivity of Ti substrates after the immersion into simulated body fluids (SBF) for 3-10 days showed a high apatite growth (Ca2+ and PO43-), according to XRD, FTIR, and SEM-EDS results, significantly on the Ti/HAp-coll.
Collapse
|
3
|
Wang Y, Zhang J, Li W, Xie X, Yu W, Xie L, Wei Z, Guo R, Yan H, Zheng Q. Antibacterial poly(butylene succinate-co-terephthalate)/titanium dioxide/copper oxide nanocomposites films for food packaging applications. Food Packag Shelf Life 2022. [DOI: 10.1016/j.fpsl.2022.101004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
4
|
Guo X, Xu X, Bai Z, Chen X, Qin J. Non‐isothermal crystallization kinetics of polypropylene/layered double hydroxide composites. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xincheng Guo
- Key Laboratory of Advanced Materials Technology Ministry of Education, School of Materials Science and Engineering Southwest Jiaotong University Chengdu China
- Key Laboratory of Karst Environment and Geohazard, Ministry of Land and Resources Guizhou University Guiyang China
| | - Xiaoyu Xu
- Key Laboratory of Advanced Materials Technology Ministry of Education, School of Materials Science and Engineering Southwest Jiaotong University Chengdu China
| | - Zhuyu Bai
- Key Laboratory of Advanced Materials Technology Ministry of Education, School of Materials Science and Engineering Southwest Jiaotong University Chengdu China
| | - Xiaolang Chen
- Key Laboratory of Advanced Materials Technology Ministry of Education, School of Materials Science and Engineering Southwest Jiaotong University Chengdu China
| | - Jun Qin
- Key Laboratory of Karst Environment and Geohazard, Ministry of Land and Resources Guizhou University Guiyang China
| |
Collapse
|
5
|
Gundogdu G, Ulusoy Ghobadi TG, Sadigh Akbari S, Ozbay E, Karadas F. Photocatalytic water oxidation with a Prussian blue modified brown TiO 2. Chem Commun (Camb) 2021; 57:508-511. [PMID: 33331359 DOI: 10.1039/d0cc07077g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A recently emerging visible light-absorbing semiconductor, brown TiO2 (b-TiO2), was coupled with a CoFe Prussian blue (PB) analogue to prepare an entirely earth-abundant semiconductor/water oxidation catalyst hybrid assembly. PB/b-TiO2 exhibits a sevenfold higher photocatalytic water oxidation activity compared to b-TiO2. An elegant band alignment unified with the optical absorption of b-TiO2 and excellent electronic dynamics of PB yield a high-performance photocatalytic system.
Collapse
Affiliation(s)
- Gulsum Gundogdu
- Department of Chemistry, Faculty of Science, Bilkent University, Ankara 06800, Turkey.
| | | | | | | | | |
Collapse
|
6
|
Abdur RM, Mousavi B, Shahadat HM, Akther N, Luo Z, Zhuiykov S, Verpoort F. Ring-opening copolymerization of ε-caprolactone and δ-valerolactone by a titanium-based metal–organic framework. NEW J CHEM 2021. [DOI: 10.1039/d1nj01946e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Copolymerization of ε-caprolactone and δ-valerolactone without any co-catalyst in a solvent-free medium under eco-friendly conditions using earth abundant Ti-metal based MOF, MIL-125.
Collapse
Affiliation(s)
- Rahaman M. Abdur
- Laboratory of Organometallics
- Catalysis and Ordered Materials
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
| | - Bibimaryam Mousavi
- Laboratory of Organometallics
- Catalysis and Ordered Materials
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
| | - Hossain M. Shahadat
- Laboratory of Organometallics
- Catalysis and Ordered Materials
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
| | - Nishat Akther
- Department of Biochemistry and Molecular Biology
- Mawlana Bhashani Science and Technology University
- Tangail 1902
- Bangladesh
| | - Zhixiong Luo
- Laboratory of Organometallics
- Catalysis and Ordered Materials
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
| | - Serge Zhuiykov
- Center for Environmental and Energy Research (CEER)
- Ghent University Global Campus
- Yeonsu-Gu
- South Korea
| | - Francis Verpoort
- Laboratory of Organometallics
- Catalysis and Ordered Materials
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
| |
Collapse
|
7
|
Fazal T, Razzaq A, Javed F, Hafeez A, Rashid N, Amjad US, Ur Rehman MS, Faisal A, Rehman F. Integrating adsorption and photocatalysis: A cost effective strategy for textile wastewater treatment using hybrid biochar-TiO 2 composite. JOURNAL OF HAZARDOUS MATERIALS 2020; 390:121623. [PMID: 31753670 DOI: 10.1016/j.jhazmat.2019.121623] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 10/30/2019] [Accepted: 11/05/2019] [Indexed: 05/04/2023]
Abstract
TiO2 based photocatalysts are extensively used for textile wastewater treatment as they are ecofriendly, inexpensive, easily available, nontoxic and have higher photostabililty. However, their wider band gap, charge carrier's recombination, and utilization of light absorbance limits their performance. In the present work, a hybrid biochar-TiO2 composite (BCT) has been synthesized by a facile synthesis strategy to overcome these problems. These photocatalysts are characterized using X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), Fourier Transform Infrared (FTIR), UV-vis diffuse reflectance spectra (DRS), and photoluminescence (PL) to evaluate their crystallinity, morphology, functional groups, bandgap energy and charge separation properties, respectively. The photodegradation of simulated textile wastewater is analyzed using hybrid composites. The hybrid biochar-TiO2 composite showed higher charge separation, slow recombination of electron-hole pairs, and enhanced light absorption as compared to control (pure TiO2 and BC alone). 99.20 % photodegradation efficiency of dye-simulated wastewater is achieved employing optimum hybrid composite, while the pure biochar and TiO2 samples exhibits 85.20 % and 42.60 % efficiencies, respectively. The maximum adsorption capacity is obtained for hybrid biochar-TiO2 sample, 74.30 mgg-1 in comparison to biochar (30.40 mgg-1) and pure TiO2 (1.50 mgg-1). The results show that hybrid biochar-TiO2 composites can perform in the target application of organic industrial pollutant removal.
Collapse
Affiliation(s)
- Tahir Fazal
- Biorefinery Engineering and Microfluidics (BEAM) Research Group, Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Pakistan; Department of Chemical Engineering, Khawaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan
| | - Abdul Razzaq
- Biorefinery Engineering and Microfluidics (BEAM) Research Group, Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Pakistan
| | - Fahed Javed
- Biorefinery Engineering and Microfluidics (BEAM) Research Group, Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Pakistan
| | - Ainy Hafeez
- Biorefinery Engineering and Microfluidics (BEAM) Research Group, Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Pakistan
| | - Naim Rashid
- Biorefinery Engineering and Microfluidics (BEAM) Research Group, Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Pakistan
| | - Ume Salma Amjad
- Biorefinery Engineering and Microfluidics (BEAM) Research Group, Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Pakistan
| | - Muhammad Saif Ur Rehman
- Department of Chemical Engineering, Khawaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan.
| | - Abrar Faisal
- Biorefinery Engineering and Microfluidics (BEAM) Research Group, Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Pakistan
| | - Fahad Rehman
- Biorefinery Engineering and Microfluidics (BEAM) Research Group, Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Pakistan.
| |
Collapse
|
8
|
Ring-opening Copolymerization of ε-Caprolactone and δ-Valerolactone Catalyzed by a 2,6-Bis(amino)phenol Zinc Complex. CHINESE JOURNAL OF POLYMER SCIENCE 2019. [DOI: 10.1007/s10118-020-2347-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
|