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Jeang WJ, Bochenek MA, Bose S, Zhao Y, Wong BM, Yang J, Jiang AL, Langer R, Anderson DG. Silicone cryogel skeletons enhance the survival and mechanical integrity of hydrogel-encapsulated cell therapies. SCIENCE ADVANCES 2024; 10:eadk5949. [PMID: 38578991 PMCID: PMC10997197 DOI: 10.1126/sciadv.adk5949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 03/01/2024] [Indexed: 04/07/2024]
Abstract
The transplantation of engineered cells that secrete therapeutic proteins presents a promising method for addressing a range of chronic diseases. However, hydrogels used to encase and protect non-autologous cells from immune rejection often suffer from poor mechanical properties, insufficient oxygenation, and fibrotic encapsulation. Here, we introduce a composite encapsulation system comprising an oxygen-permeable silicone cryogel skeleton, a hydrogel matrix, and a fibrosis-resistant polymer coating. Cryogel skeletons enhance the fracture toughness of conventional alginate hydrogels by 23-fold and oxygen diffusion by 2.8-fold, effectively mitigating both implant fracture and hypoxia of encapsulated cells. Composite implants containing xenogeneic cells engineered to secrete erythropoietin significantly outperform unsupported alginate implants in therapeutic delivery over 8 weeks in immunocompetent mice. By improving mechanical resiliency and sustaining denser cell populations, silicone cryogel skeletons enable more durable and miniaturized therapeutic implants.
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Affiliation(s)
- William J. Jeang
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- David H Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Matthew A. Bochenek
- David H Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Boston, MA 02115, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Suman Bose
- David H Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Boston, MA 02115, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Scottsdale, AZ 85259, USA
| | - Yichao Zhao
- David H Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Boston, MA 02115, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Bryan M. Wong
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Jiawei Yang
- David H Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Boston, MA 02115, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Mechanical and Materials Engineering, Worcester Polytechnic Institute, Worcester, MA 01609, USA
| | - Alexis L. Jiang
- Department of Computer Science, Wellesley College, Wellesley, MA 02481, USA
| | - Robert Langer
- David H Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Boston, MA 02115, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Institute of Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
- Harvard-MIT Program in Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Daniel G. Anderson
- David H Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Boston, MA 02115, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Institute of Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
- Harvard-MIT Program in Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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2
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Chen J, Ni Y, Gou Y, Zhu T, Sun L, Chen Z, Huang J, Yang D, Lai Y. Hydrophobic organogel sorbent and its coated porous substrates for efficient oil/water emulsion separation and effective spilled oil remediation. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132674. [PMID: 37801974 DOI: 10.1016/j.jhazmat.2023.132674] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 09/22/2023] [Accepted: 09/28/2023] [Indexed: 10/08/2023]
Abstract
Frequent offshore oil leakage accidents and large quantities of oily-wastewater produced in industry and daily life bring huge challenges to global water purification. The adaptability and stability of organogels as adsorbent materials have shown wide application prospects in the field of oil-water separation. Herein, the organogels displayed stable hydrophobic/lipophilic properties with high absorption ability (1200 wt./wt%), efficient sorption of multiple emulsions (>99.0%), and good reusability. More importantly, the organogels were successfully assembled with 2D/3D substrates to achieve excellent sorption capacity (102.5 g/g) and recycling performance (50 cycles). The gel-carbon black assembled on MS (GCB-MS) sorbent with excellent photothermal conversion performance, and can rapidly heat the surface to 70.4 °C under 1.0 sunlight radiation (1.0 kW/m2) and achieved an ultra-high sorption capacity of about 103 g/g for viscous crude oil. Meanwhile, the GCB-MS was combined with a pump to build continuous oil spill cleaning equipment to achieve a super-fast cleanup rate of 6.83 g/min. The developed hydrophobic organogels had been expanded unprecedentedly to realize the comprehensive treatment of oily-wastewater in complex environments, including layered oils, emulsions, and viscous crude oil spill, which provided an effective path for the comprehensive treatment of oily wastewater in complex environments.
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Affiliation(s)
- Jiajun Chen
- College of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou 362000, PR China; College of Chemical Engineering, Fuzhou University, Fuzhou 350116, PR China
| | - Yimeng Ni
- College of Chemical Engineering, Fuzhou University, Fuzhou 350116, PR China
| | - Yukui Gou
- College of Chemical Engineering, Fuzhou University, Fuzhou 350116, PR China
| | - Tianxue Zhu
- College of Chemical Engineering, Fuzhou University, Fuzhou 350116, PR China; Qingyuan Innovation Laboratory, Quanzhou 362801, PR China
| | - Lan Sun
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR China
| | - Zhong Chen
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore
| | - Jianying Huang
- College of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou 362000, PR China; College of Chemical Engineering, Fuzhou University, Fuzhou 350116, PR China; Qingyuan Innovation Laboratory, Quanzhou 362801, PR China.
| | - Dapeng Yang
- College of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou 362000, PR China.
| | - Yuekun Lai
- College of Chemical Engineering, Fuzhou University, Fuzhou 350116, PR China; Qingyuan Innovation Laboratory, Quanzhou 362801, PR China.
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3
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Haleem A, Pan JM, Shah A, Hussain H, He WD. A systematic review on new advancement and assessment of emerging polymeric cryogels for environmental sustainability and energy production. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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4
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El-Samak AA, Ponnamma D, Hassan MK, Adham S, Karim A, Ammar A, Alser M, Shurbaji S, Eltai NO, Al-Maadeed MAA. Multifunctional Oil Absorption with Macroporous Polystyrene Fibers Incorporating Silver-Doped ZnO. ACS OMEGA 2021; 6:8081-8093. [PMID: 33817467 PMCID: PMC8014922 DOI: 10.1021/acsomega.0c05683] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 02/23/2021] [Indexed: 06/12/2023]
Abstract
Hydrophobic microporous polystyrene (PS) fibers are fabricated by a solvent-induced phase-separation-assisted electrospinning method. Zinc oxide (ZnO) and silver-doped zinc oxide (Ag-ZnO) nanomaterials with variable morphologies are added to the PS fibers, to investigate the influence of multifunctional nanofiller addition on the porosity and consequent oil-adsorbing properties for different oil types. The doping of silver as well as the uniformity in particle distribution are confirmed by scanning electron microscopy and the energy-dispersive spectral analyses. The porosity of the fibers and their crystallinity effect depend on the hydrophobicity and surface properties of these microporous nanofilled fibers. Ag-ZnO, specifically in 2 wt %, enhanced the pore size and distribution in PS porous fibers, thereby enhancing the oil-adsorbing property and its hydrophobicity. In-depth analysis of the oil adsorption mechanism is done for the fibers, both qualitatively and quantitatively, to demonstrate its correlation with the structural integrity of the fibers. The PS/2Ag-ZnO composite also exhibits the highest antibacterial performance against Staphylococcus aureus, a general indication of antibiological fouling properties of these oil-separating films. The antifouling/antibacterial activity of the nanoparticles and high oil sorption capacity of the highly porous PS composites show great potential for use in water-treatment-related applications.
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Affiliation(s)
- Ali A. El-Samak
- Center
for Advanced Materials, Qatar University, P.O. Box 2713, Doha, Qatar
| | | | - Mohammad K. Hassan
- Center
for Advanced Materials, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Samer Adham
- ConocoPhilips
Global Water Sustainability Center, Qatar
Science and Technology Park, P.O. Box
24750, Doha, Qatar
| | - Alamgir Karim
- Department
of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
| | - Ali Ammar
- Department
of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
| | - Maha Alser
- Biomedical
Research Center, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Samar Shurbaji
- Biomedical
Research Center, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Nahla O. Eltai
- Biomedical
Research Center, Qatar University, P.O. Box 2713, Doha, Qatar
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Solvent-free nanoalumina loaded nanocellulose aerogel for efficient oil and organic solvent adsorption. J Colloid Interface Sci 2021; 581:299-306. [DOI: 10.1016/j.jcis.2020.07.099] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/19/2020] [Accepted: 07/20/2020] [Indexed: 11/21/2022]
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6
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Hydrophobic cryogels prepared via cryo-polymerization as oil carriers for biosynthesis of sophorolipids. Biochem Eng J 2020. [DOI: 10.1016/j.bej.2020.107677] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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7
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Influence of succinylation of a wide-pore albumin cryogels on their properties, structure, biodegradability, and release dynamics of dioxidine loaded in such spongy carriers. Int J Biol Macromol 2020; 160:583-592. [PMID: 32479937 DOI: 10.1016/j.ijbiomac.2020.05.251] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/14/2020] [Accepted: 05/27/2020] [Indexed: 11/21/2022]
Abstract
The goal of this study was to reveal how the chemical modification, succinylation in this case, of the wide-pore serum-albumin-based cryogels affects on their osmotic characteristics (swelling extent), biodegradability and ability to be loaded with the bactericide substance - dioxidine, as well as on its release. The cryogels were prepared via the cryogenic processing (freezing - frozen storage - thawing) of aqueous solutions containing bovine serum albumin (50 g/L), denaturant (urea or guanidine hydrochloride, 1.0 mol/L) and reductant (cysteine, 0.01 mol/L). Freezing/frozen storage temperatures were either -15, or -20, or -25 °C. After defrosting, spongy cryogels were obtained that possessed the system of interconnected gross pores, whose shape and dimensions were dependent on the freezing temperature and on the type of denaturant introduced in the feed solution. Subsequent succinylation of the resultant cryogels caused the growth of the swelling degree of the pore walls of these spongy materials, resulted in strengthening of their resistance against of trypsinolysis and gave rise to an increase in their loading capacity with respect to dioxidine. With that, the microbiological tests showed a higher bactericidal activity of the dioxidine-loaded sponges based on the succinylated albumin cryogels as compared to that of the drug-carriers based on the non-modified protein sponges.
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8
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Haleem A, Wang JY, Li HJ, Hu CS, Li XC, He WD. Macroporous Oil-Sorbents with a High Absorption Capacity and High-Temperature Tolerance Prepared through Cryo-Polymerization. Polymers (Basel) 2019; 11:E1620. [PMID: 31591363 PMCID: PMC6835346 DOI: 10.3390/polym11101620] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 09/28/2019] [Accepted: 10/03/2019] [Indexed: 12/02/2022] Open
Abstract
The facile preparation and admirable performance of macro-porous poly(lauryl acrylate)-based oil-sorbents for organic solvents and oils are reported in this manuscript. Cryo-polymerizations of lauryl acrylate (LA) with ethylene glycol dimethacrylate (EGDMA) as the cross-linker were carried out at temperatures below the freezing point of the polymerization mixture. The polymerization medium and pore-forming agent was 1,4-dioxane. The influences of the total monomer concentration, EGDMA content and cryo-polymerization temperature on the structure of the obtained P(LA-co-EGDMA) cryogels were investigated with the techniques of Fourier transform infrared spectroscopy, scanning electron microscopy, contact angle measurement and thermo-gravimetric analysis. Through the modulation of the crosslinking density and porosity of these cryogels, the P(LA-co-EGDMA) oil-sorbents demonstrated a high absorption capacity for organic solvents and oils, recyclability and high-temperature tolerance. The absorption capacity reached 20-21 and 16-17 g/g for toluene and gasoline oil, respectively. Those fabricated sorbents survived high temperatures up to 150 °C without any change in absorption capacity as well as porosity. Considering the convenient synthesis process and absorption performance, the present work offers a remarkable opportunity to bring polymer cryogels to practical application in waste oil clean-up.
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Affiliation(s)
- Abdul Haleem
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Jia-Yun Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Hui-Juan Li
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Chuan-Shan Hu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Xi-Chuan Li
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Wei-Dong He
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China.
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9
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Yetiskin B, Tureyen OE, Yilmaz A, Yakan SD, Okay OS, Okay O. Single-, Double-, and Triple-Network Macroporous Rubbers as a Passive Sampler. ACS APPLIED MATERIALS & INTERFACES 2019; 11:28317-28326. [PMID: 31290316 DOI: 10.1021/acsami.9b08788] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Over the past decades, large quantities of organic compounds including polycyclic aromatic hydrocarbons (PAHs) entering aquatic systems create acutely toxic effects and chronic abnormalities in aquatic organisms. Passive sampling is an effective technique to detect organic compounds at very low concentrations in water by accumulating them in their structure to a measurable concentration level. Polymeric passive samplers reported so far have a nonporous structure, and hence, the absorption of organic compounds into the passive sampler is governed by their slow diffusion process. We present here novel macroporous rubber sorbents as monophasic passive samplers with tunable pore morphologies, extraordinary mechanical properties, and high sorption rates and capacities for PAHs. Sorbent materials based on single-network (SN), double-network (DN), and triple-network (TN) butyl rubber were prepared via the cryogelation technique from butyl rubber solutions in benzene as the solvent at -18 °C using a sulfur monochloride cross-linker. To obtain macroporous rubbers with DN and TN structures, the reactions were conducted in the macropores of SN and DN rubber networks, respectively. The porous morphology and the mechanical behavior of the rubbers can be tuned by adjusting the weight ratio wR of the network components. The rubbers exhibit two generations of pores, namely, large and small pores with diameters 40-240 and 14-54 μm, respectively. The sizes of both large and small pores decrease and approach each other as wR is increased. Four PAH compounds, namely, naphthalene, phenanthrene, fluoranthene, and pyrene with two to four aromatic rings, dissolved in filtered seawater with a salinity of 22 ppt were used to highlight the correlations between the properties of macroporous rubbers and their absorption rates and capacities. Nonporous silicone rubber reported before as a passive sampler has the lowest absorption rate and capacity as compared to the macroporous rubbers. The SN rubber absorbs most rapidly PAHs because of its largest porosity, whereas the TN rubber with the smallest pores exhibits the highest sorption capacity.
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Mustapa MH, Musbah DL, Sulaiman NMN, Lazim AM. Fabrication of rubber gel as oil absorbent by using water as porosity agent for oil removal. J Appl Polym Sci 2019. [DOI: 10.1002/app.47749] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- M. Hilman Mustapa
- School of Chemical Sciences and Food Technology, Faculty of Science and TechnologyThe National University of Malaysia 43600 UKM Bangi Selangor Malaysia
| | - Diana Liza Musbah
- School of Chemical Sciences and Food Technology, Faculty of Science and TechnologyThe National University of Malaysia 43600 UKM Bangi Selangor Malaysia
| | - Nik Muslihuddin Nik Sulaiman
- School of Chemical Sciences and Food Technology, Faculty of Science and TechnologyThe National University of Malaysia 43600 UKM Bangi Selangor Malaysia
| | - Azwan Mat Lazim
- School of Chemical Sciences and Food Technology, Faculty of Science and TechnologyThe National University of Malaysia 43600 UKM Bangi Selangor Malaysia
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11
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Guo F, Wang Y, Chen X, Chen M, He W, Chen Z. Supermacroporous polydivinylbenzene cryogels with high surface area: Synthesis by solvothermal postcrosslinking and their adsorption behaviors for carbon dioxide and aniline. J Appl Polym Sci 2019. [DOI: 10.1002/app.47716] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Fenghao Guo
- Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical EngineeringUniversity of Jinan Jinan 250022 China
| | - Yinping Wang
- Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical EngineeringUniversity of Jinan Jinan 250022 China
| | - Xilu Chen
- Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical EngineeringUniversity of Jinan Jinan 250022 China
| | - Mingqian Chen
- Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical EngineeringUniversity of Jinan Jinan 250022 China
| | - Wei He
- Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical EngineeringUniversity of Jinan Jinan 250022 China
| | - Zhiyong Chen
- Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical EngineeringUniversity of Jinan Jinan 250022 China
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12
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Muslumova S, Yetiskin B, Okay O. Highly Stretchable and Rapid Self-Recoverable Cryogels Based on Butyl Rubber as Reusable Sorbent. Gels 2019; 5:gels5010001. [PMID: 30678138 PMCID: PMC6473387 DOI: 10.3390/gels5010001] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 12/27/2018] [Accepted: 01/03/2019] [Indexed: 01/28/2023] Open
Abstract
Cryogels based on hydrophobic polymers combining good mechanical properties with fast responsivity are attractive materials for many applications, such as oil spill removal from water and passive sampler for organic pollutants. We present, here, cryogels based on butyl rubber (BR) with a high stretchability, rapid self-recoverability, and excellent reusability for organic solvents. BR cryogels were prepared at subzero temperatures in cyclohexane and benzene at various BR concentrations in the presence of sulfur monochloride (S2Cl2) as a crosslinker. Although the properties of BR cryogels are independent of the amount of the crosslinker above a critical value, the type of the solvent, the cryogelation temperature, as well as the rubber content significantly affect their properties. It was found that benzene produces larger pore volumes as compared to cyclohexane due to the phase separation of BR from benzene at low temperatures, producing additional pores. Increasing cryogelation temperature from −18 to −2 °C leads to the formation of more ordered and aligned pores in the cryogels. Increasing BR content decreases the amount of unfrozen microphase of the frozen reaction solution, leading to a decrease in the total porosity of the cryogels and the average diameter of pores. Cryogels formed at −2 °C and at 5% (w/v) BR in cyclohexane sustain up to around 1400% stretch ratios. Cryogels swollen in toluene can completely be squeezed under strain during which toluene is released from their pores, whereas addition of toluene to the squeezed cryogels leads to recovery of their original shapes.
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Affiliation(s)
- Sevil Muslumova
- Department of Chemistry, Istanbul Technical University, Maslak, Istanbul 34469, Turkey.
| | - Berkant Yetiskin
- Department of Chemistry, Istanbul Technical University, Maslak, Istanbul 34469, Turkey.
| | - Oguz Okay
- Department of Chemistry, Istanbul Technical University, Maslak, Istanbul 34469, Turkey.
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13
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Bhardwaj N, Bhaskarwar AN. A review on sorbent devices for oil-spill control. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 243:1758-1771. [PMID: 30408863 DOI: 10.1016/j.envpol.2018.09.141] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 09/28/2018] [Accepted: 09/28/2018] [Indexed: 05/16/2023]
Abstract
Multiple research areas have emerged in view of the deleterious impacts of oil-spills on the environment and the relative intractability of the problem per se. The dimensions mostly explored thus far, relate to the prediction of the fate of oil-spill and development of effective counter-measures. Among the counter measures, development of effective sorbents for oil-spill remediation has sustained interest for quite long, in spite of the numerous challenges associated with it. Most importantly, the sorbent materials need to be assembled in such a structure or form that they can survive the oceanic currents and other prevailing environmental conditions without themselves becoming a source of secondary pollution. This review paper focuses on the chronological development of such assemblies or devices over the past century and a critical appraisal of the same. Relevant major factors affecting the performance of sorbent assemblies can be identified as: structural features and modes of sorption, effect of weathering on oil-sorption capacity, mode of distribution and harvesting of such absorbent units, and the final disposal after feasible cycles of sorption and release. This review paper incorporates a detailed discussion on the major inventions and the extant open literature in this field.
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Affiliation(s)
- Neha Bhardwaj
- Department of Chemical Engineering, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi, 110 016, India
| | - Ashok N Bhaskarwar
- Department of Chemical Engineering, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi, 110 016, India.
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14
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Lozinsky VI. Cryostructuring of Polymeric Systems. 50. † Cryogels and Cryotropic Gel-Formation: Terms and Definitions. Gels 2018; 4:E77. [PMID: 30674853 PMCID: PMC6209254 DOI: 10.3390/gels4030077] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 08/31/2018] [Accepted: 09/06/2018] [Indexed: 02/07/2023] Open
Abstract
A variety of cryogenically-structured polymeric materials are of significant scientific and applied interest in various areas. However, in spite of considerable attention to these materials and intensive elaboration of their new examples, as well as the impressive growth in the number of the publications and patents on this topic over the past two decades, a marked variability of the used terminology and definitions is frequently met with in the papers, reviews, theses, patents, conference presentations, advertising materials and so forth. Therefore, the aim of this brief communication is to specify the basic terms and definitions in the particular field of macromolecular science.
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Affiliation(s)
- Vladimir I Lozinsky
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street 28, 119991 Moscow, Russia.
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15
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Sada K. Lipophilic Polyelectrolyte Gels and Crystal Crosslinking, New Methods for Supramolecular Control of Swelling and Collapsing of Polymer Gels. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20180096] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kazuki Sada
- Department of Chemistry, Faculty of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo, Hokkaido 060-0810, Japan
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16
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Sahiner N. Super macroporous poly(N-isopropyl acrylamide) cryogel for separation purpose. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4326] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Nurettin Sahiner
- Department of Chemistry and Nanoscience and Technology Research and Application Center (NANORAC), Faculty of Science and Arts; Canakkale Onsekiz Mart University; Terzioglu Campus 17100 Canakkale Turkey
- Chemical and Biomolecular Engineering and Physics and Engineering Physics Departments; Tulane University; 2001 Percival Stern Hall New Orleans LA 70118 USA
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Chin CC, Musbah NDL, Abdullah I, Lazim AM. Characterization and Evaluation of Prudent Liquid Natural Rubber-Based Foam for Oil Spill Control Application. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2018. [DOI: 10.1007/s13369-018-3256-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Durgun M, Ozan Aydin G, Bulbul Sonmez H. Aromatic alkoxysilane based hybrid organogels as sorbent for toxic organic compounds, fuels and crude oil. REACT FUNCT POLYM 2017. [DOI: 10.1016/j.reactfunctpolym.2017.03.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Karadag K, Yati I, Bulbul Sonmez H. Effective clean-up of organic liquid contaminants including BTEX, fuels, and organic solvents from the environment by poly(alkoxysilane) sorbents. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2016; 174:45-54. [PMID: 26999646 DOI: 10.1016/j.jenvman.2016.01.043] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Revised: 01/16/2016] [Accepted: 01/30/2016] [Indexed: 06/05/2023]
Abstract
Novel cross-linked poly(alkoxysilane)s, which can be used for the removal of organic liquid contaminants from water, were synthesized in one step, in a solvent free reaction medium, at moderately high temperature without using a catalyst. The synthesized polymers were characterized by Fourier transform infrared spectroscopy (FTIR), solid-state (13)C and (29)Si cross-polarization magic angle spinning (CPMAS) nuclear magnetic resonance (NMR), thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) methods and elemental analysis. The swelling features of the poly(alkoxysilane)s were investigated in organic solvents and oils, such as dichloromethane, benzene, toluene, xylene, methyl tertiary butyl ether, and also some fuel derivatives, such as gasoline and euro diesel. All polymers have high-fast solvent uptake abilities, good reusability and thermal stability. The swelling features of the synthesized cross-linked polymers were evaluated by the swelling test, absorption-desorption kinetics. Thus, the results propose that cross-linked poly(alkoxysilane)s are suitable for the absorption of oil-organic pollutants from the water surface.
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Affiliation(s)
- Koksal Karadag
- Gebze Technical University, Department of Chemistry, PO. Box 141, 41400 Gebze, Kocaeli, Turkey
| | - Ilker Yati
- Gebze Technical University, Department of Chemistry, PO. Box 141, 41400 Gebze, Kocaeli, Turkey
| | - Hayal Bulbul Sonmez
- Gebze Technical University, Department of Chemistry, PO. Box 141, 41400 Gebze, Kocaeli, Turkey.
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20
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Yati I, Ozan Aydin G, Bulbul Sonmez H. Cross-linked poly(tetrahydrofuran) as promising sorbent for organic solvent/oil spill. JOURNAL OF HAZARDOUS MATERIALS 2016; 309:210-8. [PMID: 26894295 DOI: 10.1016/j.jhazmat.2016.02.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 02/01/2016] [Accepted: 02/04/2016] [Indexed: 05/16/2023]
Abstract
In this study, a series of different molecular weights of poly(tetrahydrofuran) (PTHF), which is one of the most important commercial polymers around the world, was condensed with tris[3-(trimethoxysilyl)propyl]isocyanurate (ICS) to generate a cross-linked 3-dimensional network in order to obtain organic solvent/oil sorbents having high swelling capacity. The prepared sorbents show high and fast swelling capacity in oils such as dichloromethane (DCM), tetrahydrofuran (THF), acetone, t-butyl methyl ether (MTBE), gasoline, euro diesel, and crude oil. The recovery of the absorbed oils from contaminated surfaces, especially from water, and the regeneration of the sorbents after several applications are effective. The characterization and thermal properties of the sorbents are identified by Fourier transform infrared spectroscopy (FTIR), solid-state (13)C and (29)Si cross-polarization magic angle spinning (CPMAS) nuclear magnetic resonance (NMR), differential scanning calorimetry (DSC) and thermal gravimetric analyses (TGA), respectively. The new usage area of PTHF is emerged by the preparation of PTHF-based network structure with high oil absorption capacity and having excellent reusability as an oil absorbent for the removal of organic liquids from the spill site.
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Affiliation(s)
- Ilker Yati
- Gebze Technical University, Department of Chemistry, P.O. Box 141, 41400 Gebze, Kocaeli, Turkey
| | - Gulsah Ozan Aydin
- Gebze Technical University, Department of Chemistry, P.O. Box 141, 41400 Gebze, Kocaeli, Turkey
| | - Hayal Bulbul Sonmez
- Gebze Technical University, Department of Chemistry, P.O. Box 141, 41400 Gebze, Kocaeli, Turkey.
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21
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Tasaki-Handa Y, Abe Y, Ooi K. Fabrication of a monolithic cryogel from the cyclohexane organogel of a coordination polymer based on a phosphoester. RSC Adv 2016. [DOI: 10.1039/c6ra12477a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A monolithic coordination polymer ([Sm(dehp)3]) has been successfully prepared through the lyophilization of a cyclohexane organogel.
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Affiliation(s)
- Yuiko Tasaki-Handa
- Research Institute for Environmental Management Technology
- National
- Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba
- Japan
| | - Yukie Abe
- Research Institute for Environmental Management Technology
- National
- Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba
- Japan
| | - Kenta Ooi
- Research Institute for Environmental Management Technology
- National
- Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba
- Japan
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22
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Ratcha A, Samart C, Yoosuk B, Sawada H, Reubroycharoen P, Kongparakul S. Polyisoprene modified poly(alkyl acrylate) foam as oil sorbent material. J Appl Polym Sci 2015. [DOI: 10.1002/app.42688] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Arissara Ratcha
- Department of Chemistry; Faculty of Science and Technology; Thammasat University; Pathumthani 12120 Thailand
| | - Chanatip Samart
- Department of Chemistry; Faculty of Science and Technology; Thammasat University; Pathumthani 12120 Thailand
| | - Boonyawan Yoosuk
- National Metal and Materials Technology Center (MTEC); Pathumthani 12120 Thailand
| | - Hideo Sawada
- Department of Frontier Materials Chemistry; Graduate School of Science and Technology, Hirosaki University; Hirosaki 036-8561 Japan
| | | | - Suwadee Kongparakul
- Department of Chemistry; Faculty of Science and Technology; Thammasat University; Pathumthani 12120 Thailand
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23
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Yati I, Karadag K, Sonmez HB. Amphiphilic poly(ethylene glycol) gels and their swelling features. POLYM ADVAN TECHNOL 2015. [DOI: 10.1002/pat.3498] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ilker Yati
- Department of Chemistry; Gebze Technical University; P.O. Box 141 41400 Gebze Kocaeli Turkey
| | - Koksal Karadag
- Department of Chemistry; Gebze Technical University; P.O. Box 141 41400 Gebze Kocaeli Turkey
| | - Hayal Bulbul Sonmez
- Department of Chemistry; Gebze Technical University; P.O. Box 141 41400 Gebze Kocaeli Turkey
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24
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Kizil S, Karadag K, Ozan Aydin G, Bulbul Sonmez H. Poly(alkoxysilane) reusable organogels for removal of oil/organic solvents from water surface. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2015; 149:57-64. [PMID: 25463571 DOI: 10.1016/j.jenvman.2014.09.030] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 08/29/2014] [Accepted: 09/29/2014] [Indexed: 06/04/2023]
Abstract
Novel poly(alkoxysilane)s with high oil and organic solvent absorbencies were prepared by a bulk polymerization technique via the condensation of 1,3-benzenedimethanol with different lengths of alkoxysilanes at 160 °C without using a catalyst. The influence of the length of the alkoxysilane on the polymer properties and swelling ratios was investigated. Swelling experiments in various solvents indicated that these cross-linked poly(alkoxysilane)s can be used as absorbents for oils and oil-derived organic solvents. The swelling features of the poly(alkoxysilane)s were determined by solvent absorption tests, swelling kinetics experiments, and desorption kinetics measurements. The absorption capacities of the poly(alkoxysilane)s were 50-725% for various organic solvents and oil derivatives such as gasoline and diesel. The structural and thermal properties of the cross-linked poly(alkoxysilane) polymers were determined by FTIR, solid-state (13)C and (29)Si cross-polarization magic angle spinning (CP-MAS) NMR, and thermal gravimetric analysis (TGA).
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Affiliation(s)
- Soner Kizil
- Gebze Institute of Technology, Department of Chemistry, PO. Box 141, 41400 Gebze, Kocaeli, Turkey
| | - Koksal Karadag
- Gebze Institute of Technology, Department of Chemistry, PO. Box 141, 41400 Gebze, Kocaeli, Turkey
| | - Gulsah Ozan Aydin
- Gebze Institute of Technology, Department of Chemistry, PO. Box 141, 41400 Gebze, Kocaeli, Turkey
| | - Hayal Bulbul Sonmez
- Gebze Institute of Technology, Department of Chemistry, PO. Box 141, 41400 Gebze, Kocaeli, Turkey.
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25
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Ozmen MM, Fu Q, Kim J, Qiao GG. A rapid and facile preparation of novel macroporous silicone-based cryogels via photo-induced thiol–ene click chemistry. Chem Commun (Camb) 2015; 51:17479-82. [DOI: 10.1039/c5cc07417g] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We prepared novel cryogels via facile thiol–ene reaction at low temperatures, which can selectively remove oils with excellent recyclability.
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Affiliation(s)
- Mehmet Murat Ozmen
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville
- Australia
- Department of Bioengineering
| | - Qiang Fu
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville
- Australia
| | - Jinguk Kim
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville
- Australia
| | - Greg G. Qiao
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville
- Australia
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26
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Halib N, Mohd Amin MCI, Ahmad I, Abrami M, Fiorentino S, Farra R, Grassi G, Musiani F, Lapasin R, Grassi M. Topological characterization of a bacterial cellulose-acrylic acid polymeric matrix. Eur J Pharm Sci 2014; 62:326-33. [PMID: 24932712 DOI: 10.1016/j.ejps.2014.06.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2014] [Revised: 05/29/2014] [Accepted: 06/04/2014] [Indexed: 02/07/2023]
Abstract
This paper focuses on the micro- and nano-topological organization of a hydrogel, constituted by a mixture of bacterial cellulose and acrylic acid, and intended for biomedical applications. The presence of acrylic acid promotes the formation of two interpenetrated continuous phases: the primary "pores phase" (PP) containing only water and the secondary "polymeric network phase" (PNP) constituted by the polymeric network swollen by the water. Low field Nuclear Magnetic Resonance (LF NMR), rheology, Scanning Electron Microscopy (SEM) and release tests were used to determine the characteristics of the two phases. In particular, we found that this system is a strong hydrogel constituted by 81% (v/v) of PP phase the remaining part being occupied by the PNP phase. Pores diameters span in the range 10-100 μm, the majority of them (85%) falling in the range 30-90 μm. The high PP phase tortuosity indicates that big pores are not directly connected to each other, but their connection is realized by a series of interconnected small pores that rend the drug path tortuous. The PNP is characterized by a polymer volume fraction around 0.73 while mesh size is around 3 nm. The theoretical interpretation of the experimental data coming from the techniques panel adopted, yielded to the micro- and nano-organization of our hydrogel.
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Affiliation(s)
- N Halib
- Faculty of Dentistry, Universiti Sains Islam Malaysia (USIM), Aras 15, Menara B, Persiaran MPAJ, Jalan Pandan Utama, Pandan Indah, 55100 Kuala Lumpur, Malaysia.
| | - M C I Mohd Amin
- Centre for Drug Delivery Research, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia.
| | - I Ahmad
- School of Chemical Science and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia.
| | - M Abrami
- Department of Engineering and Architecture, University of Trieste, Via A. Valerio 6, 34127 Trieste, Italy.
| | - S Fiorentino
- Department of Engineering and Architecture, University of Trieste, Via A. Valerio 6, 34127 Trieste, Italy.
| | - R Farra
- Department of Engineering and Architecture, University of Trieste, Via A. Valerio 6, 34127 Trieste, Italy.
| | - G Grassi
- Department of Life Sciences, Cattinara University Hospital, Trieste University, Strada di Fiume 447, I-34149 Trieste, Italy.
| | - F Musiani
- Scuola Internazionale Superiore di Studi Avanzati (SISSA/ISAS), Via Bonomea 265, I-34136 Trieste, Italy.
| | - R Lapasin
- School of Chemical Science and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia.
| | - M Grassi
- School of Chemical Science and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia.
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27
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28
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Pan Y, Peng C, Wang W, Shi K, Liu Z, Ji X. Preparation and absorption behavior to organic pollutants of macroporous hydrophobic polyvinyl alcohol–formaldehyde sponges. RSC Adv 2014. [DOI: 10.1039/c4ra03278k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of macroporous hydrophobic polyvinyl alcohol–formaldehyde sponges (PVF–Gn–Hms) are preparedviathe reactions of hydrophilic polyvinyl alcohol–formaldehyde (PVF) sponges with glutaraldehyde (GA) and fatty acyl chloride. Both ATR-IR and solid-state CP/MAS.
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Affiliation(s)
- Yanxiong Pan
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, P.R. China
- University of Chinese Academy of Sciences
| | - Chao Peng
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, P.R. China
| | - Weicai Wang
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, P.R. China
- University of Chinese Academy of Sciences
| | - Kai Shi
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, P.R. China
| | - Zhi Liu
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, P.R. China
| | - Xiangling Ji
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, P.R. China
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29
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Okay O, Lozinsky VI. Synthesis and Structure–Property Relationships of Cryogels. POLYMERIC CRYOGELS 2014. [DOI: 10.1007/978-3-319-05846-7_3] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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30
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Pan Y, Wang W, Peng C, Shi K, Luo Y, Ji X. Novel hydrophobic polyvinyl alcohol–formaldehyde foams for organic solvents absorption and effective separation. RSC Adv 2014. [DOI: 10.1039/c3ra43907k] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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32
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Liu HD, Wang Y, Yang MB, He* Q. Evaluation of Hydrophobic Polyurethane Foam as Sorbent Material for Oil Spill Recovery. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2013. [DOI: 10.1080/10601325.2014.850631] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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33
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Sorption behavior of polymeric gels based on alkoxysilane and aliphatic diol. JOURNAL OF POLYMER RESEARCH 2013. [DOI: 10.1007/s10965-013-0305-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Hu Y, Liu X, Zou J, Gu T, Chai W, Li H. Graphite/isobutylene-isoprene rubber highly porous cryogels as new sorbents for oil spills and organic liquids. ACS APPLIED MATERIALS & INTERFACES 2013; 5:7737-7742. [PMID: 23398649 DOI: 10.1021/am303294m] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The preparation, by a freeze-thaw method, of new graphite/isobutylene-isoprene rubber (IIR) sorbents for oil and organic liquid is described. Graphite was expected to improve the adsorption properties. The cryogels were prepared by solution crosslinking IIR rubber in the presence of graphite in benzene at various temperatures, using sulfur monochloride as the crosslinker, and characterized by SEM and contact angle measurements. The dried cryogels, with interconnected macropores were sponge-like soft materials, with excellent buoyancy and hydrophobicity. They also showed excellent sorption characteristics, with the best sample exhibiting maximum sorption capacities of 17.8 g g(-1) for crude oil, 21.6 g g(-1) for diesel oil, and 23.4 g g(-1) for lubricating oil, respectively. The samples also showed excellent sorption capability for organic liquids, absorbing up to around twenty times their own mass. After rapid and effective desorption, taking just 3-5 h, the cryogels were recovered. They could also be reused more than 30 times by simply centrifuging to remove the sorbed liquid. These characteristics mean that the cryogels prepared in this study are promising materials for removal of large-scale oil or toxic organic spills.
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Affiliation(s)
- Yan Hu
- College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, PR China
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35
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Lee P, Rogers MA. Phase-selective sorbent xerogels as reclamation agents for oil spills. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:5617-5621. [PMID: 23590644 DOI: 10.1021/la400805c] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
12-Hydroxystearic acid (12-HSA) xerogels derived from 12-HSA-acetronitrile organogels are highly effective sorbent materials capable of adsorbing apolar, spilled materials in aqueous environments. 12-HSA xerogels made from 12-HSA-acetronitrile organogels are more effective than 12-HSA xerogels made from 12-HSA-pentane organogels because of the highly branched fibrillar networks established in acetonitrile molecular gels. This difference arises because of dissimilarities in the network structure between 12-HSA in various solvents. These xerogels, being thermoreversible, allow for both the spilled oil to be reclaimed but also the gelator may be reused to engineer new xerogels for oil spill containment and cleanup.
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Affiliation(s)
- Phillip Lee
- Department of Food Science, Rutgers University, The State University of New Jersey, New Brunswick, New Jersey 08901, United States
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36
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Hydrophobic Nano-Silica/Isobutylene-Isoprene Rubber Cryogels as Efficient and Reusable Sorbents for Oil Spills and Organic Liquids. ACTA ACUST UNITED AC 2013. [DOI: 10.4028/www.scientific.net/amm.295-298.1368] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, a new kind of nano-silica embedded cryogel was prepared by solution crosslinking isobutylene-isoprene rubber with silica in benzene at various temperatures. The characteristics of cryogels were manifested by SEM. Sorption tests showed that the cryogels were efficient at removing kinds of oil, aromatic compound and alkane. The results suggested that the maximum sorption capacity was 15.44 g.g-1 for crude oil, 15.62 g.g-1 for diesel and 13.16 g.g-1 for lubricating oil, respectively. Moreover, the cryogels were reusable once they were centrifuged, leading to continuous sorption capacity for these oils. Therefore, the cryogel might be a promising removal material which can be used in large-scale oil or toxic organic liquids spills.
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