1
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Akkurt Yıldırım M, Özer B, Türkoğlu N, Denktaş C. Evaluation of the Mechanical Strength and Cell Adhesion Capacity of POSS Doped PVA/CMC Hernia Patch. Macromol Biosci 2024:e2400095. [PMID: 39052386 DOI: 10.1002/mabi.202400095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 07/05/2024] [Indexed: 07/27/2024]
Abstract
Peritoneal adhesion typically occurs in applications such as abdominal, pelvic, and vascular surgery. It is necessary to develop a mechanical barrier to prevent adhesion. In this study, a novel biomaterial as a mechanical barrier is developed by combining polyvinyl alcohol (PVA) and carboxymethyl cellulose (CMC), doped with polyhedral oligomeric silsesquioxane (POSS) to prevent peritoneal adhesion. Fourier-transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) methods reveal that POSS nanoparticles in the PVA matrix disrupted the intramolecular hydroxyl groups and structure of the crystal region. Electron microscopy (EM) images reveal that high concentrations of POSS (2 wt.%) cause irregular clustering in the composite matrix. As the concentration of POSS increases in the matrix, the degradation of the membranes increases, and protein adhesion decreases. In vitro cytotoxicity tests show a toxic effect on cells for PVA/CMC composite membranes, while on the other hand, the addition of POSS increases cell viability. According to the MMT test the POSS decreases cell adhesion of membranes. When comparing the POSS doped membrane to the undoped PVA/CMC membrane, an increase in the total antioxidant level and a decrease in the total oxidant level is observed.
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Affiliation(s)
- Meryem Akkurt Yıldırım
- Department of Molecular Biology and Genetics, Yildiz Technical University, Istanbul, 34349, Turkey
| | - Barkın Özer
- Department of Physics, Yildiz Technical University, Istanbul, 34220, Turkey
| | - Nelisa Türkoğlu
- Department of Molecular Biology and Genetics, Yildiz Technical University, Istanbul, 34349, Turkey
| | - Cenk Denktaş
- Department of Physics, Yildiz Technical University, Istanbul, 34220, Turkey
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2
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Cruz-Amaya KS, Hernández-Martínez D, Del-Toro-Sánchez CL, Carvajal-Millan E, Martínez-Robinson K, DeAnda-Flores YB, Cornejo-Ramírez YI. Synthesis and Characterization of Triticale Starch-Based Hydrogel for pH Responsive Controlled Diffusion. ACS OMEGA 2024; 9:28564-28576. [PMID: 38973925 PMCID: PMC11223258 DOI: 10.1021/acsomega.4c02536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 06/03/2024] [Accepted: 06/06/2024] [Indexed: 07/09/2024]
Abstract
Considering the FAO perspectives for agriculture toward 2030, many natural sources will be no longer profitable for the synthesis of many biomaterials. Triticale (X Triticosecale Wittmack) is a cereal crop synthesized to withstand those marginal conditions; however, it is primarily used as fodder worldwide. We reported for the first time the synthesis of a natural anionic hydrogel with gastrointestinal pH stimulus-response as a new alternative of smart material, based on Eronga triticale starch as sustainable biomass, using citrate (pK a ∼3.1, 4.7, and 6.4) as cross-linking agent. The scanning electron microscopy and X-ray diffraction exhibited A and B-type starch granules, and semicrystallinity A-type. The presence of the anionic sensing group (COOH) was verified by infrared spectroscopy, the interactions by hydrogen bonds between starch and glycerol and esterification between starch and citric acid were identified by 1H NMR spectra, and through thermal analysis hydrogels exhibited four endothermic curves (179-319 °C, ∼0.711-39 kJ/mol E a). The results showed that the slight addition of glycerol increases the thermal stability, but a higher amount of glycerol decreases the intermolecular forces affecting the thermal stability contrary, the mechanical properties could be benefited. The rheological analyses showed viscoelastic tendency (G' > G″) with high stability (Tanδ < 1) in frequency, time, and strain sweeps. Gastrointestinal pH sensitivity (∼2-7.8) was verified (α ≤ 0.01) following Fick's diffusive parameters, which resulted in a tendency to gradually release BSA with increasing pH ∼3-7 by anomalous and case-II diffusion, showing greater release at pH ∼7.8/3.5 h (80-96%). We aim to expand the biomaterials area focusing on triticale starch due to its limited reported investigations, low-cost, green modification, and its rheological performance as plastic.
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Affiliation(s)
- Karen S. Cruz-Amaya
- Departamento
de Investigación y Posgrado en Alimentos, Universidad de Sonora, 83000 Hermosillo, Sonora, Mexico
| | - Diego Hernández-Martínez
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, 83000 Hermosillo, Sonora, Mexico
| | - Carmen L. Del-Toro-Sánchez
- Departamento
de Investigación y Posgrado en Alimentos, Universidad de Sonora, 83000 Hermosillo, Sonora, Mexico
| | | | - Karla Martínez-Robinson
- Centro
de Investigación en Alimentación y Desarrollo (CIAD,
A.C.), 83304 Hermosillo, Sonora, Mexico
| | - Yubia B. DeAnda-Flores
- Centro
de Investigación en Alimentación y Desarrollo (CIAD,
A.C.), 83304 Hermosillo, Sonora, Mexico
| | - Yaeel I. Cornejo-Ramírez
- Departamento
de Investigación y Posgrado en Alimentos, Universidad de Sonora, 83000 Hermosillo, Sonora, Mexico
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3
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Xu H, Yan S, Gerhard E, Xie D, Liu X, Zhang B, Shi D, Ameer GA, Yang J. Citric Acid: A Nexus Between Cellular Mechanisms and Biomaterial Innovations. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2402871. [PMID: 38801111 DOI: 10.1002/adma.202402871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 05/07/2024] [Indexed: 05/29/2024]
Abstract
Citrate-based biodegradable polymers have emerged as a distinctive biomaterial platform with tremendous potential for diverse medical applications. By harnessing their versatile chemistry, these polymers exhibit a wide range of material and bioactive properties, enabling them to regulate cell metabolism and stem cell differentiation through energy metabolism, metabonegenesis, angiogenesis, and immunomodulation. Moreover, the recent US Food and Drug Administration (FDA) clearance of the biodegradable poly(octamethylene citrate) (POC)/hydroxyapatite-based orthopedic fixation devices represents a translational research milestone for biomaterial science. POC joins a short list of biodegradable synthetic polymers that have ever been authorized by the FDA for use in humans. The clinical success of POC has sparked enthusiasm and accelerated the development of next-generation citrate-based biomaterials. This review presents a comprehensive, forward-thinking discussion on the pivotal role of citrate chemistry and metabolism in various tissue regeneration and on the development of functional citrate-based metabotissugenic biomaterials for regenerative engineering applications.
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Affiliation(s)
- Hui Xu
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Su Yan
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Ethan Gerhard
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Denghui Xie
- Department of Histology and Embryology, School of Basic Medical Sciences, Department of Orthopedic Surgery, The Third Affiliated Hospital of Southern Medical University, Southern Medical University, Guangzhou, 510515, P. R. China
- Academy of Orthopedics of Guangdong Province, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, 510630, P. R. China
| | - Xiaodong Liu
- Research Center for Industries of the Future, Westlake University, Hangzhou, Zhejiang, 310030, P. R. China
- School of Life Sciences, Westlake University, Hangzhou, Zhejiang, 310030, P. R. China
- Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang, 310030, P. R. China
- Westlake Institute for Advanced Study, Hangzhou, Zhejiang, 310030, P. R. China
| | - Bing Zhang
- Research Center for Industries of the Future, Westlake University, Hangzhou, Zhejiang, 310030, P. R. China
- School of Life Sciences, Westlake University, Hangzhou, Zhejiang, 310030, P. R. China
- Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang, 310030, P. R. China
- Westlake Institute for Advanced Study, Hangzhou, Zhejiang, 310030, P. R. China
| | - Dongquan Shi
- Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, Jiangsu, 210008, P. R. China
| | - Guillermo A Ameer
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
- Center for Advanced Regenerative Engineering, Northwestern University, Evanston, IL, 60208, USA
- Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA
| | - Jian Yang
- Research Center for Industries of the Future, Westlake University, Hangzhou, Zhejiang, 310030, P. R. China
- Biomedical Engineering Program, School of Engineering, Westlake University, Hangzhou, Zhejiang, 310030, P. R. China
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4
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Omisol CM, Aguinid BJM, Abilay GY, Asequia DM, Tomon TR, Sabulbero KX, Erjeno DJ, Osorio CK, Usop S, Malaluan R, Dumancas G, Resurreccion EP, Lubguban A, Apostol G, Siy H, Alguno AC, Lubguban A. Flexible Polyurethane Foams Modified with Novel Coconut Monoglycerides-Based Polyester Polyols. ACS OMEGA 2024; 9:4497-4512. [PMID: 38313545 PMCID: PMC10831968 DOI: 10.1021/acsomega.3c07312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 12/01/2023] [Accepted: 12/14/2023] [Indexed: 02/06/2024]
Abstract
Coconut oil, a low-molecular-weight vegetable oil, is virtually unutilized as a polyol material for flexible polyurethane foam (FPUF) production due to the high-molecular-weight polyol requirement of FPUFs. The saturated chemistry of coconut oil also limits its compatibility with widely used polyol-forming processes, which mostly rely on the unsaturation of vegetable oil for functionalization. Existing studies have only exploited this resource in producing low-molecular-weight polyols for rigid foam synthesis. In this present work, high-molecular-weight polyester polyols were synthesized from coconut monoglycerides (CMG), a coproduct of fatty acid production from coconut oil, via polycondensation at different mass ratios of CMG with 1:5 glycerol:phthalic anhydride. Characterization of the CMG-based polyol (CMGPOL) products showed number-average molecular weights between 1997 and 4275 g/mol, OH numbers between 77 and 142 mg KOH/g, average functionality between 4.8 and 5.8, acid numbers between 4.49 and 23.56 mg KOH/g, and viscosities between 1.27 and 89.57 Pa·s. The polyols were used to synthesize the CMGPOL-modified PU foams (CPFs) at 20 wt % loading. The modification of the foam formulation increased the monodentate and bidentate urea groups, shown using Fourier transform infrared (FTIR) spectroscopy, that promoted microphase separation in the foam matrix, confirmed using atomic force microscopy (AFM) and differential scanning calorimetry (DSC). The implications of the structural change to foam morphology and open cell content were investigated using a scanning electron microscope (SEM) and gas pycnometer. The density of the CPFs decreased, while a significant improvement in their tensile and compressive properties was observed. Also, the CPFs exhibited different resiliency with a correlation to microphase separation. These findings offer a new sustainable polyol raw material that can be used to modify petroleum-based foam and produce flexible foams with varying properties that can be tailored to meet specific requirements.
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Affiliation(s)
- Christine
Joy M. Omisol
- Center
for Sustainable Polymers, MSU-Iligan Institute
of Technology, Iligan
City 9200, Philippines
| | - Blessy Joy M. Aguinid
- Center
for Sustainable Polymers, MSU-Iligan Institute
of Technology, Iligan
City 9200, Philippines
| | - Gerson Y. Abilay
- Graduate
Program of Materials Science and Engineering, Department of Material
Resources Engineering and Technology, MSU-Iligan
Institute of Technology, Iligan
City 9200, Philippines
| | - Dan Michael Asequia
- Center
for Sustainable Polymers, MSU-Iligan Institute
of Technology, Iligan
City 9200, Philippines
| | - Tomas Ralph Tomon
- Center
for Sustainable Polymers, MSU-Iligan Institute
of Technology, Iligan
City 9200, Philippines
| | - Karyl Xyrra Sabulbero
- Center
for Sustainable Polymers, MSU-Iligan Institute
of Technology, Iligan
City 9200, Philippines
| | - Daisy Jane Erjeno
- Center
for Sustainable Polymers, MSU-Iligan Institute
of Technology, Iligan
City 9200, Philippines
| | - Carlo Kurt Osorio
- Center
for Sustainable Polymers, MSU-Iligan Institute
of Technology, Iligan
City 9200, Philippines
| | - Shashwa Usop
- Center
for Sustainable Polymers, MSU-Iligan Institute
of Technology, Iligan
City 9200, Philippines
| | - Roberto Malaluan
- Center
for Sustainable Polymers, MSU-Iligan Institute
of Technology, Iligan
City 9200, Philippines
- Department
of Chemical Engineering and Technology, MSU-Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Gerard Dumancas
- Department
of Chemistry, The University of Scranton, Scranton, Pennsylvania 18510, United States
| | | | - Alona Lubguban
- Department
of Mathematics, Statistics, and Computer Studies, University of the Philippines Rural High School, Paciano Rizal, Bay, Laguna 4033, Philippines
| | - Glenn Apostol
- Chemrez
Technologies, Inc., Quezon City 1110, Philippines
| | - Henry Siy
- Chemrez
Technologies, Inc., Quezon City 1110, Philippines
| | - Arnold C. Alguno
- Center
for Sustainable Polymers, MSU-Iligan Institute
of Technology, Iligan
City 9200, Philippines
- Department
of Physics, MSU-Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Arnold Lubguban
- Center
for Sustainable Polymers, MSU-Iligan Institute
of Technology, Iligan
City 9200, Philippines
- Graduate
Program of Materials Science and Engineering, Department of Material
Resources Engineering and Technology, MSU-Iligan
Institute of Technology, Iligan
City 9200, Philippines
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5
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Mohammadbagheri Z, Movahedi B, Saeedi S, Rahmati A. An eco-friendly composite hydrogel based on covalently crosslinked cellulose/poly (glycerol citrate) for thallium (Ι) removal from aqueous solutions. Int J Biol Macromol 2024; 254:127840. [PMID: 37926325 DOI: 10.1016/j.ijbiomac.2023.127840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 10/27/2023] [Accepted: 10/31/2023] [Indexed: 11/07/2023]
Abstract
Cellulose/poly (glycerol citrate) reinforced with thiol-rich polyhedral oligomeric silsesquioxane and apple peel (POSS-SH@CAG-CEL/AP) was synthesized using gelation method in the presence of glutaraldehyde as a crosslinker agent and used as an efficient composite hydrogel for elimination of Tl(Ι) from aqueous solutions. This composite hydrogel and synthesized thiol-rich polyhedral oligomeric silsesquioxane were characterized by elemental analysis, FT-IR, NMR, TGA, and FE-SEM techniques. The effects of synthetic and environmental parameters on the adsorption capacity of the composite hydrogel were investigated and it was found that thiol-rich polyhedral oligomeric silsesquioxane has improved the hydrogel properties including the Tl(Ι) uptake and the thermal stability. The maximum adsorption capacity of 352.3 mg g-1 was obtained within 30 min under optimum reaction conditions. A typical Langmuir adsorption isotherm with was observed for adsorption of Tl(I) onto POSS-SH@CAG-CEL/AP and pseudo-second-order kinetic model provided the best correlation between experimental data. Thermodynamic studies showed that the Tl(I) adsorption was spontaneous process and exothermic. Also, the reusability tests confirmed that the POSS-SH@CAG-CEL/AP can be reused for four times without any remarkable change in its adsorption capacity. Thus, this reusable biobased composite hydrogel can be an ideal candidate for elimination of Tl(I) from aqueous solutions.
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Affiliation(s)
- Zahra Mohammadbagheri
- Department of Chemistry, University of Isfahan, P.O. Box 81746-734 41, Isfahan, Iran; Department of Nanotechnology, Faculty of Chemistry, University of Isfahan, Isfahan 81746-73441, Iran.
| | - Behrooz Movahedi
- Department of Chemistry, University of Isfahan, P.O. Box 81746-734 41, Isfahan, Iran; Department of Nanotechnology, Faculty of Chemistry, University of Isfahan, Isfahan 81746-73441, Iran.
| | - Shaghayegh Saeedi
- Department of Chemistry, University of Isfahan, P.O. Box 81746-734 41, Isfahan, Iran; Department of Nanotechnology, Faculty of Chemistry, University of Isfahan, Isfahan 81746-73441, Iran
| | - Abbas Rahmati
- Department of Chemistry, University of Isfahan, P.O. Box 81746-734 41, Isfahan, Iran; Department of Nanotechnology, Faculty of Chemistry, University of Isfahan, Isfahan 81746-73441, Iran.
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6
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Giroto AS, Valle SF, Borges R, Colnago LA, Ribeiro TS, Jablonowski ND, Ribeiro C, Mattoso LHC. Revealing the Structure Formation on Polyglycerol Citrate Polymers-An Environmentally Friendly Polyester as a Seed-Coating Material. Polymers (Basel) 2023; 15:4303. [PMID: 37959983 PMCID: PMC10647340 DOI: 10.3390/polym15214303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 10/23/2023] [Accepted: 10/30/2023] [Indexed: 11/15/2023] Open
Abstract
A detailed structural investigation of a promising bio-based polymer, polyglycerol citrate polyester, obtained by the bulk polycondensation of glycerol (Gly) against citric acid (Cit) under mild reaction was performed. The reaction in conditions with and without catalyst use (sulfuric acid, H2SO4) was investigated, showing evidence that it is possible to modify the polymer solubility according to the ratio and catalyst utilization. 13C and 1H NMR indicated that synthesis catalyzed with Cit excess leads to higher esterification degrees of citrate groups. In contrast, the Gly moieties are more prominent in catalyzed polymers regardless of the excess monomers. Overall, a successful conversion of Gly and Cit into polyesters was attained even without catalysis, enabling a simple route for the large-scale production of this green material to be used as a coating material. This polymer has been shown to be well-suited for coating seeds and might be a promising material for similar agricultural applications. Tests on soybean seed coating with a PGCit solution of 75% indicated that the seed quality and germination rate were not affected by the PGCit coating, concluding that this polymer is suitable for this application.
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Affiliation(s)
- Amanda S. Giroto
- Embrapa Instrumentation, XV de Novembro Street, 1452, São Carlos 13560-970, SP, Brazil; (S.F.V.); (L.A.C.); (L.H.C.M.)
- Forschungszentrum Jülich GmbH, Institute of Bio- and Geosciences, IBG-2: Plant Sciences, 52425 Jülich, Germany
| | - Stella F. Valle
- Embrapa Instrumentation, XV de Novembro Street, 1452, São Carlos 13560-970, SP, Brazil; (S.F.V.); (L.A.C.); (L.H.C.M.)
| | - Roger Borges
- Embrapa Instrumentation, XV de Novembro Street, 1452, São Carlos 13560-970, SP, Brazil; (S.F.V.); (L.A.C.); (L.H.C.M.)
| | - Luiz A. Colnago
- Embrapa Instrumentation, XV de Novembro Street, 1452, São Carlos 13560-970, SP, Brazil; (S.F.V.); (L.A.C.); (L.H.C.M.)
| | - Tatiana S. Ribeiro
- Department of Natural Science, Mathematics and Education, Federal University of São Carlos, Anhanguera, km 174, Araras 13604-900, SP, Brazil;
| | - Nicolai D. Jablonowski
- Forschungszentrum Jülich GmbH, Institute of Bio- and Geosciences, IBG-2: Plant Sciences, 52425 Jülich, Germany
| | - Caue Ribeiro
- Embrapa Instrumentation, XV de Novembro Street, 1452, São Carlos 13560-970, SP, Brazil; (S.F.V.); (L.A.C.); (L.H.C.M.)
| | - Luiz H. C. Mattoso
- Embrapa Instrumentation, XV de Novembro Street, 1452, São Carlos 13560-970, SP, Brazil; (S.F.V.); (L.A.C.); (L.H.C.M.)
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7
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Fakhri V, Su CH, Tavakoli Dare M, Bazmi M, Jafari A, Pirouzfar V. Harnessing the power of polyol-based polyesters for biomedical innovations: synthesis, properties, and biodegradation. J Mater Chem B 2023; 11:9597-9629. [PMID: 37740402 DOI: 10.1039/d3tb01186k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/24/2023]
Abstract
Polyesters based on polyols have emerged as promising biomaterials for various biomedical applications, such as tissue engineering, drug delivery systems, and regenerative medicine, due to their biocompatibility, biodegradability, and versatile physicochemical properties. This review article provides an overview of the synthesis methods, performance, and biodegradation mechanisms of polyol-based polyesters, highlighting their potential for use in a wide range of biomedical applications. The synthesis techniques, such as simple polycondensation and enzymatic polymerization, allow for the fine-tuning of polyester structure and molecular weight, thereby enabling the tailoring of material properties to specific application requirements. The physicochemical properties of polyol-based polyesters, such as hydrophilicity, crystallinity, and mechanical properties, can be altered by incorporating different polyols. The article highlights the influence of various factors, such as molecular weight, crosslinking density, and degradation medium, on the biodegradation behavior of these materials, and the importance of understanding these factors for controlling degradation rates. Future research directions include the development of novel polyesters with improved properties, optimization of degradation rates, and exploration of advanced processing techniques for fabricating scaffolds and drug delivery systems. Overall, polyol-based polyesters hold significant potential in the field of biomedical applications, paving the way for groundbreaking advancements and innovative solutions that could revolutionize patient care and treatment outcomes.
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Affiliation(s)
- Vafa Fakhri
- Department of Polymer Engineering & Color Technology, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran.
| | - Chia-Hung Su
- Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City, Taiwan
| | - Masoud Tavakoli Dare
- Department of Polymer Engineering & Color Technology, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran.
| | - Maryam Bazmi
- Department of Polymer Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Aliakbar Jafari
- Department of Polymer Engineering & Color Technology, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran.
| | - Vahid Pirouzfar
- Department of Chemical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran
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8
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Castro JM, Montalbán MG, Martínez-Pérez N, Domene-López D, Pérez JM, Arrabal-Campos FM, Fernández I, Martín-Gullón I, García-Quesada JC. Thermoplastic starch/polyvinyl alcohol blends modification by citric acid-glycerol polyesters. Int J Biol Macromol 2023:125478. [PMID: 37336376 DOI: 10.1016/j.ijbiomac.2023.125478] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 06/13/2023] [Accepted: 06/16/2023] [Indexed: 06/21/2023]
Abstract
Thermoplastic starch/polyvinyl alcohol (TPS/PVA) films have limitations for being used in long-term applications due to starch retrogradation. This leads to plasticizer migration, especially when low molecular weight plasticizers such as glycerol, are used. In this work, we employed mixtures of oligomers based on glycerol citrates with higher molecular weight than glycerol as plasticizers for potato-based TPS/PVA blends obtained by melt-mixing. This constitutes an alternative to reduce plasticizer migration while keeping high swelling degree, and to provide high mechanical performance. The novelty lies in the usage of these oligomers by melt-mixing technique, aspect not deeply explored previously and that represents the first step towards industrial scalability. Prior to the blending process, oligomers mixtures were prepared with different molar ratios of citric acid (0-40 mol%) and added them. This minimizes the undesirable hydrolysis effect of free carboxylic groups on starch chains. The results demonstrated that the migration of plasticizers in TPS/PVA blends decreased by up to 70 % when the citric acid content increased. This reduction was attributed to the higher molecular weight (the majority in the range 764-2060 Da) and the 3D structure of the oligomers compared to using raw glycerol. Furthermore, the films exhibited a 150 % increase in Young's modulus and tensile strength without a reduction in elongation at break, while maintaining a high gel content, due to a moderate crosslinking.
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Affiliation(s)
- Jennifer M Castro
- Chemical Engineering Department, University of Alicante, Apartado 99, 03080 Alicante, Spain; Institute of Chemical Process Engineering, University of Alicante, Apartado 99, 03080 Alicante, Spain
| | - Mercedes G Montalbán
- Chemical Engineering Department, Faculty of Chemistry, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, 30071 Murcia, Spain
| | - Noelia Martínez-Pérez
- Chemical Engineering Department, University of Alicante, Apartado 99, 03080 Alicante, Spain; Institute of Chemical Process Engineering, University of Alicante, Apartado 99, 03080 Alicante, Spain
| | - Daniel Domene-López
- Chemical Engineering Department, University of Alicante, Apartado 99, 03080 Alicante, Spain; Institute of Chemical Process Engineering, University of Alicante, Apartado 99, 03080 Alicante, Spain
| | - Juana M Pérez
- Department of Chemistry and Physics, CIAIMBITAL Center, University of Almeria, 04120 Almeria, Spain
| | | | - Ignacio Fernández
- Department of Chemistry and Physics, CIAIMBITAL Center, University of Almeria, 04120 Almeria, Spain
| | - Ignacio Martín-Gullón
- Chemical Engineering Department, University of Alicante, Apartado 99, 03080 Alicante, Spain; Institute of Chemical Process Engineering, University of Alicante, Apartado 99, 03080 Alicante, Spain.
| | - Juan C García-Quesada
- Chemical Engineering Department, University of Alicante, Apartado 99, 03080 Alicante, Spain; Institute of Chemical Process Engineering, University of Alicante, Apartado 99, 03080 Alicante, Spain
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9
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Svensson I, Butron A, Puyadena M, González A, Irusta L, Barrio A. Bio-Based Phosphate-Containing Polyester for Improvement of Fire Reaction in Wooden Particleboard. Polymers (Basel) 2023; 15:polym15051093. [PMID: 36904334 PMCID: PMC10007242 DOI: 10.3390/polym15051093] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 02/15/2023] [Accepted: 02/17/2023] [Indexed: 02/25/2023] Open
Abstract
A new phosphate-containing bio-polyester based on glycerol and citric acid was synthesized and evaluated as fire-retardant (FR) in wooden particleboards. Phosphorus pentoxide was used to first introduce phosphate esters in the glycerol followed by esterification with citric acid to produce the bio-polyester. The phosphorylated products were characterized by ATR-FTIR, 1H-NMR and TGA-FTIR. After polyester curing, they were grinded and incorporated in laboratory produced particleboards. The fire reaction performance of the boards was evaluated by cone calorimeter. An increased char residue was produced depending on the phosphorus content and the THR (Total Heat Release), PHRR (Peak of Heat Release Rate) and MAHRE (Maximum Average of the Rate of Heat Emission) were considerably reduced in presence of the FRs. Highlights: Phosphate containing bio-polyester as fire retardant in wooden particle board; Fire performance is improved; Bio-polyester acts in the condensed and gas phases; Additive effectiveness similar to ammonium polyphosphate.
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Affiliation(s)
- Ingemar Svensson
- TECNALIA, Basque Research and Technology Alliance (BRTA), 20730 Azpeitia, Spain
| | - Amaia Butron
- TECNALIA, Basque Research and Technology Alliance (BRTA), 20730 Azpeitia, Spain
| | - Maddalen Puyadena
- POLYMAT, Department of Polymers and Advanced Materials, Physics, Chemistry and Technology, University of the Basque Country (UPV/EHU), 20080 Donostia-San Sebastián, Spain
| | - Alba González
- POLYMAT, Department of Polymers and Advanced Materials, Physics, Chemistry and Technology, University of the Basque Country (UPV/EHU), 20080 Donostia-San Sebastián, Spain
| | - Lourdes Irusta
- POLYMAT, Department of Polymers and Advanced Materials, Physics, Chemistry and Technology, University of the Basque Country (UPV/EHU), 20080 Donostia-San Sebastián, Spain
| | - Aitor Barrio
- TECNALIA, Basque Research and Technology Alliance (BRTA), 20730 Azpeitia, Spain
- Correspondence:
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10
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Cohen J, Shull D, Reed S. Co-delivery of an HIV prophylactic and contraceptive using PGSU as a long-acting multipurpose prevention technology. Expert Opin Drug Deliv 2023; 20:285-299. [PMID: 36654482 DOI: 10.1080/17425247.2023.2168642] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
OBJECTIVES Poly(glycerol sebacate) urethane (PGSU) elastomers formulated with 4'-ethynyl-2-fluoro-2'-deoxyadenosine (EFdA), levonorgestrel (LNG), or a combination thereof can function as multipurpose prevention technology implants for prophylaxis against HIV and unintended pregnancies. For these public health challenges, long-acting drug delivery technologies may improve patient experience and adherence. Traditional polymers encounter challenges delivering multiple drugs with dissimilar physiochemical properties. PGSU offers an alternative option that successfully delivers hydrophilic EFdA alongside hydrophobic LNG. METHODS This article presents the formulation, design, and characterization of PGSU implants, highlighting the impact of API loading, dimensions, and individual- versus combination-loading on release rates. RESULTS Co-delivery of hydrophilic EFdA alongside hydrophobic LNG acted as a porogen to accelerate LNG release. Increasing the surface area of LNG-only implants increased LNG release. All EFdA-LNG, EFdA-only, and LNG-only formulated implants demonstrated low burst release and linear release kinetics over 245 or 122 days studied to date. CONCLUSION PGSU co-delivers two APIs for HIV prevention and contraception at therapeutically relevant concentrations in vitro from a single bioresorbable, elastomeric implant. A new long-acting polymer technology, PGSU demonstrates linear-release kinetics, dual delivery of APIs with disparate physiochemical properties, and biocompatibility through long-term subcutaneous implantation. PGSU can potentially meet the demands of complex MPT or fixed-dose combination products, where better solutions can serve and empower patients.
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11
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Wang M, Xu P, Lei B. Engineering multifunctional bioactive citrate-based biomaterials for tissue engineering. Bioact Mater 2023; 19:511-537. [PMID: 35600971 PMCID: PMC9096270 DOI: 10.1016/j.bioactmat.2022.04.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 04/22/2022] [Accepted: 04/24/2022] [Indexed: 12/21/2022] Open
Abstract
Developing bioactive biomaterials with highly controlled functions is crucial to enhancing their applications in regenerative medicine. Citrate-based polymers are the few bioactive polymer biomaterials used in biomedicine because of their facile synthesis, controllable structure, biocompatibility, biomimetic viscoelastic mechanical behavior, and functional groups available for modification. In recent years, various multifunctional designs and biomedical applications, including cardiovascular, orthopedic, muscle tissue, skin tissue, nerve and spinal cord, bioimaging, and drug or gene delivery based on citrate-based polymers, have been extensively studied, and many of them have good clinical application potential. In this review, we summarize recent progress in the multifunctional design and biomedical applications of citrate-based polymers. We also discuss the further development of multifunctional citrate-based polymers with tailored properties to meet the requirements of various biomedical applications. Multifunctional bioactive citrate-based biomaterials have broad applications in regenerative medicine. Recent advances in multifunctional design and biomedical applications of citate-based polymers are summarized. Future challenge of citrate-based polymers in various biomedical applications are discussed.
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12
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Hydrothermal pretreatment based on semi-continuous flow-through sequential reactors for the recovery of bioproducts from jabuticaba (Myrciaria cauliflora) peel. J Supercrit Fluids 2022. [DOI: 10.1016/j.supflu.2022.105766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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13
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Lee J, Nanthananon P, Kim A, Kwon YK. Malleable and recyclable thermoset network with reversible
β‐hydroxyl
esters and disulfide bonds. J Appl Polym Sci 2022. [DOI: 10.1002/app.53369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Juho Lee
- Department of Polymer Science and Engineering and Program in Environmental and Polymer Engineering Inha University Incheon South Korea
| | - Phornwalan Nanthananon
- Department of Polymer Science and Engineering and Program in Environmental and Polymer Engineering Inha University Incheon South Korea
| | - Arin Kim
- Department of Polymer Science and Engineering and Program in Environmental and Polymer Engineering Inha University Incheon South Korea
| | - Yong Ku Kwon
- Department of Polymer Science and Engineering and Program in Environmental and Polymer Engineering Inha University Incheon South Korea
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14
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Shukla K. A study on the synthesis of various polyesters from glycerol. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03221-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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15
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Ultrasonication-induced and diluent-assisted suspension polymerization for size-controllable synthesis of polydimethylsiloxane droplets. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128827] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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16
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Abstract
ConspectusThis Account discusses the evolution of our strategy to conduct environmentally responsible research in the field of polymer chemistry. To contextualize our work, we begin with a broad historical overview of the modern environmental movement, the rise of sustainability as a concept, and how chemistry has responded to these forces, which were often sharply critical of our field. We then trace our own responses, from graduate school onward, chronicling a series of experiences and research projects that molded, challenged, and reshaped how we think about sustainability in polymer science.Since beginning our independent careers in 2004, we have recognized and worked to resolve the tension between designing synthetic polymers for specific desired thermomechanical properties and minimizing environmental impact. In our early years, we were most strongly guided by the 12 Principles of Green Chemistry (12PGC), which had only recently been proposed. The authors' early research agendas had a rather narrow focus on two areas, specifically catalysis and biobased monomers, which we saw as strongly linked to sustainability. Over time, we found these areas to be too narrow in their focus, ignoring important considerations such as the capacity of monomer supply to support scale-up and the impact polymers have at the end of their usage lifetimes. With respect to monomers and catalysts, we consider descriptive metrics that quantify waste production and the toxicity of compounds used during synthesis. In terms of polymer end-of-life, we discuss hydrophobicity as a tool to help understand susceptibility to degradation in the environment as well as some of the concerns with design for degradation, a critical component of 12PGC.Now, after nearly two decades of investigation, we believe that achieving sustainability in polymer science will require us to move beyond the qualitative use of the 12PGC to a portfolio of metrics. We note a heartening increase in the availability and use of such metrics and tools across the field. These include items that provide limited insight but are relatively trivial to integrate into existing workflows such as E factor or the Toxicity Estimation Software Tool. We also appreciate the increased use of Life Cycle Assessment (LCA), which is both dramatically more thorough and difficult to deploy. Finally, we propose the creation of a national LCA center, similar to instrumental core facilities. Such a resource would enable the use of this tool across multiple phases of research and we hope would more effectively guide us to a sustainable future.
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Affiliation(s)
| | - Robert T Mathers
- Department of Chemistry, Pennsylvania State University, New Kensington, Pennsylvania 15068, United States
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17
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Lambros M, Tran T(H, Fei Q, Nicolaou M. Citric Acid: A Multifunctional Pharmaceutical Excipient. Pharmaceutics 2022; 14:972. [PMID: 35631557 PMCID: PMC9148065 DOI: 10.3390/pharmaceutics14050972] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 04/15/2022] [Accepted: 04/23/2022] [Indexed: 02/04/2023] Open
Abstract
Citric acid, a tricarboxylic acid, has found wide application in the chemical and pharmaceutical industry due to its biocompatibility, versatility, and green, environmentally friendly chemistry. This review emphasizes the pharmaceutical uses of citric acid as a strategic ingredient in drug formulation while focusing on the impact of its physicochemical properties. The functionality of citric acid is due to its three carboxylic groups and one hydroxyl group. These allow it to be used in many ways, including its ability to be used as a crosslinker to form biodegradable polymers and as a co-former in co-amorphous and co-crystal applications. This paper also analyzes the effect of citric acid in physiological processes and how this effect can be used to enhance the attributes of pharmaceutical preparations, as well as providing a critical discussion on the issues that may arise out of the presence of citric acid in formulations.
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Affiliation(s)
- Maria Lambros
- Department of Pharmaceutical Sciences, College of Pharmacy, Western University of Health Sciences, 309 E Second Street, Pomona, CA 91766, USA; (T.T.); (Q.F.)
| | - Thac (Henry) Tran
- Department of Pharmaceutical Sciences, College of Pharmacy, Western University of Health Sciences, 309 E Second Street, Pomona, CA 91766, USA; (T.T.); (Q.F.)
| | - Qinqin Fei
- Department of Pharmaceutical Sciences, College of Pharmacy, Western University of Health Sciences, 309 E Second Street, Pomona, CA 91766, USA; (T.T.); (Q.F.)
| | - Mike Nicolaou
- Doric Pharma LLC, 5270 California Ave, Suite 300, Irvine, CA 92617, USA;
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18
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Macías SI, Ruano G, Borràs N, Alemán C, Armelin E. UV
assisted photo reactive polyether‐polyesteramide resin for future applications in
3D
printing. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210626] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Steffi I. Macías
- Departament d'Enginyeria Química, EEBE Universitat Politècnica de Catalunya Barcelona Spain
| | - Guillem Ruano
- Departament d'Enginyeria Química, EEBE Universitat Politècnica de Catalunya Barcelona Spain
| | - Núria Borràs
- Departament d'Enginyeria Química, EEBE Universitat Politècnica de Catalunya Barcelona Spain
| | - Carlos Alemán
- Departament d'Enginyeria Química, EEBE Universitat Politècnica de Catalunya Barcelona Spain
- Barcelona Research Center for Multiscale Science, EEBE Barcelona Spain
| | - Elaine Armelin
- Departament d'Enginyeria Química, EEBE Universitat Politècnica de Catalunya Barcelona Spain
- Barcelona Research Center for Multiscale Science, EEBE Barcelona Spain
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19
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Pimenta IF, Figueiredo LRF, Santos AMC, Oliveira JE, Medeiros ES. Development of controlled release fertilizer systems for
KCl
using glycerol‐based polymers. J Appl Polym Sci 2021. [DOI: 10.1002/app.51747] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Igor F. Pimenta
- Materials and Biosystems Laboratory (LAMAB), Department of Materials Engineering (DEMAT) Federal University of Paraíba (UFPB) João Pessoa Brazil
| | - Lucas R. F. Figueiredo
- Materials and Biosystems Laboratory (LAMAB), Department of Materials Engineering (DEMAT) Federal University of Paraíba (UFPB) João Pessoa Brazil
| | - Adillys M. C. Santos
- Center of Science and Technology in Energy and Sustainability (CETENS) Federal University of Recôncavo da Bahia (UFRB) Feira de Santana Brazil
| | - Juliano E. Oliveira
- Department of Engineering (DEG) Federal University of Lavras (UFLA) Lavras Brazil
| | - Eliton S. Medeiros
- Materials and Biosystems Laboratory (LAMAB), Department of Materials Engineering (DEMAT) Federal University of Paraíba (UFPB) João Pessoa Brazil
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20
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Gadomska‐Gajadhur A, Bandzerewicz A, Wrzecionek M, Ruśkowski P. Biobased poly(glycerol citrate) synthesis optimization via design of experiments. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | | | | | - Paweł Ruśkowski
- Faculty of Chemistry Warsaw University of Technology Warsaw Poland
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21
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Effect of citric acid and plasma activated water on the functional properties of sodium alginate for potential food packaging applications. Food Packag Shelf Life 2021. [DOI: 10.1016/j.fpsl.2021.100733] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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22
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Zhang Q, Song M, Xu Y, Wang W, Wang Z, Zhang L. Bio-based polyesters: Recent progress and future prospects. Prog Polym Sci 2021. [DOI: 10.1016/j.progpolymsci.2021.101430] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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23
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Olarte-Paredes A, Salgado-Delgado AM, García-Fuentes J, Salgado-Delgado R, Cedillo-Valverde G, López-Lara T, Hernández-Zaragoza J, Castaño VM. Synthesis and characterization of a polyester based on citric acid/ethylene glycol/glycerol. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2021. [DOI: 10.1080/10601325.2021.1965890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- A. Olarte-Paredes
- Tecnológico Nacional de México (TecNM), Instituto Tecnológico de Zacatepec (ITZ), Zacatepec de Hidalgo, Morelos, México
| | - A. M. Salgado-Delgado
- Tecnológico Nacional de México (TecNM), Instituto Tecnológico de Zacatepec (ITZ), Zacatepec de Hidalgo, Morelos, México
| | - J.J. García-Fuentes
- Tecnológico Nacional de México (TecNM), Instituto Tecnológico de Zacatepec (ITZ), Zacatepec de Hidalgo, Morelos, México
| | - R. Salgado-Delgado
- Tecnológico Nacional de México (TecNM), Instituto Tecnológico de Zacatepec (ITZ), Zacatepec de Hidalgo, Morelos, México
| | - G. Cedillo-Valverde
- Instituto de Investigaciones en Materiales UNAM, Circuito Exterior Ciudad Universitaria, México, D.F, México
| | - T. López-Lara
- División de Estudios de Posgrado, Facultad de Ingeniería, Universidad Autónoma de Querétaro, Querétaro, México
| | - J.B. Hernández-Zaragoza
- División de Estudios de Posgrado, Facultad de Ingeniería, Universidad Autónoma de Querétaro, Querétaro, México
| | - V. M. Castaño
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Querétaro, México
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24
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Oliveira ACS, Santos TA, Ugucioni JC, Rocha RA, Borges SV. Effect of glycerol on electrical conducting of chitosan/polyaniline blends. J Appl Polym Sci 2021. [DOI: 10.1002/app.51249] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | | | | | - Roney Alves Rocha
- Food Science Department Federal University of Lavras Lavras Minas Gerais Brazil
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25
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Wrzecionek M, Bandzerewicz A, Dutkowska E, Dulnik J, Denis P, Gadomska‐Gajadhur A. Poly(glycerol citrate)‐polylactide nonwovens toward tissue engineering applications. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | | | - Ewa Dutkowska
- Faculty of Chemistry Warsaw University of Technology Warsaw Poland
| | - Judyta Dulnik
- Laboratory of Polymers and Biomaterials Institute of Fundamental Technological Research Polish Academy of Sciences Warsaw Poland
| | - Piotr Denis
- Laboratory of Polymers and Biomaterials Institute of Fundamental Technological Research Polish Academy of Sciences Warsaw Poland
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26
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Sopcak T, Medvecky L, Giretova M, Stulajterova R, Brus J, Urbanova M, Kromka F, Podobova M, Faberova M. Fabrication of a glycerol-citrate polymer coated tricalcium phosphate bone cements: Structural investigation and material properties. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02596-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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27
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Barbier M, Le Guen MJ, McDonald-Wharry J, Bridson JH, Pickering KL. Quantifying the Shape Memory Performance of a Three-Dimensional-Printed Biobased Polyester/Cellulose Composite Material. 3D PRINTING AND ADDITIVE MANUFACTURING 2021; 8:193-200. [PMID: 36654660 PMCID: PMC9828606 DOI: 10.1089/3dp.2020.0166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
A biobased composite material with heat-triggered shape memory ability was successfully formulated for three-dimensional (3D) printing. It was produced from cellulose nanocrystals and cellulose micro-powder particles within a bioderived thermally cured polyester matrix based on glycerol, citric acid, and sebacic acid. The effect of curing duration on the material's shape memory behavior was quantified by using two thermo-mechanical approaches to measure recovery: (1) displacement in three-point bending and (2) angular recovery from a beam bent at 90° in a single cantilever setup. Extending curing duration increased the material's glass-transition temperature from -26°C after 6 h to 13°C after 72 h of curing. Fourier-transform infrared spectroscopy confirmed the associated progressive conversion of functional groups consistent with polyester formation. Slow recovery rates and low levels of shape recovery (22-70%) were found for samples cured less than 24 h. Those results also indicated a high dependence on the measurement approach. In contrast, samples cured for 48 and 72 h exhibited faster recovery rates, a significantly higher recovery percentage (90-100%) and were less sensitive to the measurement approach. Results demonstrated that once a sufficient curing threshold was achieved, additional curing time could be used to tune the material glass-transition temperature and create heat-triggered 3D-printed products.
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Affiliation(s)
- Maxime Barbier
- Scion, Rotorua, New Zealand
- Address correspondence to: Maxime Barbier, Scion, Private Bag 3020, Rotorua 3010, New Zealand
| | | | - John McDonald-Wharry
- Faculty of Science and Engineering, University of Waikato, Hamilton, New Zealand
| | | | - Kim L. Pickering
- Faculty of Science and Engineering, University of Waikato, Hamilton, New Zealand
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28
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Birajdar MS, Joo H, Koh WG, Park H. Natural bio-based monomers for biomedical applications: a review. Biomater Res 2021; 25:8. [PMID: 33795019 PMCID: PMC8015023 DOI: 10.1186/s40824-021-00208-8] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 03/10/2021] [Indexed: 11/10/2022] Open
Abstract
In recent years, synthetic and semi-synthetic polymer materials have been widely used in various applications. Especially concerning biomedical applications, their biocompatibility, biodegradability, and non-toxicity have increased the interest of researchers to discover and develop new products for the well-being of humanity. Among the synthetic and semi-synthetic materials, the use of natural bio-based monomeric materials presents a possible novel avenue for the development of new biocompatible, biodegradable, and non-toxic products. The purpose of this article is to review the information on the role of natural bio-based monomers in biomedical applications. Increased eco-friendliness, biocompatibility, biodegradability, non-toxicity, and intrinsic biological activity are some of the attributes which make itaconic, succinic, citric, hyaluronic, and glutamic acids suitable potential materials for biomedical applications. Herein, we summarize the most recent advances in the field over the past ten years and specifically highlight new and interesting discoveries in biomedical applications. Natural origin acid-based bio-monomers for biomedical applications.
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Affiliation(s)
- Mallinath S Birajdar
- Department of Integrative Engineering, Chung-Ang University, Seoul, Republic of Korea
| | - Haejin Joo
- Department of Integrative Engineering, Chung-Ang University, Seoul, Republic of Korea
| | - Won-Gun Koh
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, Republic of Korea
| | - Hansoo Park
- Department of Integrative Engineering, Chung-Ang University, Seoul, Republic of Korea.
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29
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Azadirachta indica A. Juss (Meliaceae) microencapsulated bioinsecticide: Spray drying technique optimization, characterization, in vitro release, and degradation kinetics. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2020.11.079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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30
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Risley BB, Ding X, Chen Y, Miller PG, Wang Y. Citrate Crosslinked Poly(Glycerol Sebacate) with Tunable Elastomeric Properties. Macromol Biosci 2021; 21:e2000301. [PMID: 33205616 PMCID: PMC8360362 DOI: 10.1002/mabi.202000301] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/20/2020] [Indexed: 11/08/2022]
Abstract
Poly(glycerol-sebacate) (PGS) is a biodegradable elastomer known for its mechanical properties and biocompatibility for soft tissue engineering. However, harsh thermal crosslinking conditions are needed to make PGS devices. To facilitate the thermal crosslinking, citric acid is explored as a crosslinker to form poly(glycerol sebacate citrate) (PGSC) elastomers. The effects of varying citrate contents and curing times are investigated on the mechanical properties, elasticity, degradation, and hydrophilicity. To examine the potential presence of unreacted citric acid, material acidity is monitored in relation to the citrate content and curing times. It is discovered that a low citrate content and a short curing time produce PGSC with tunable mechanical characteristics similar to PGS with enhanced elasticity. The materials demonstrate good cytocompatibility with human umbilical vein endothelial cells similar to the PGS control. The research study suggests that PGSC is a potential candidate for large-scale biomedical applications because of the quick thermal crosslink and tunable elastomeric properties.
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Affiliation(s)
- Brandon B. Risley
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, 277 Kimball Hall, 134 Hollister Drive, Ithaca, NY 14853
| | - Xiaochu Ding
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, 277 Kimball Hall, 134 Hollister Drive, Ithaca, NY 14853
- Department of Chemistry, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931
| | - Ying Chen
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, 277 Kimball Hall, 134 Hollister Drive, Ithaca, NY 14853
| | - Paula G. Miller
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, 277 Kimball Hall, 134 Hollister Drive, Ithaca, NY 14853
| | - Yadong Wang
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, 277 Kimball Hall, 134 Hollister Drive, Ithaca, NY 14853
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31
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Wrzecionek M, Matyszczak G, Bandzerewicz A, Ruśkowski P, Gadomska-Gajadhur A. Kinetics of Polycondensation of Citric Acid with Glycerol Based on a Genetic Algorithm. Org Process Res Dev 2021. [DOI: 10.1021/acs.oprd.0c00492] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Michał Wrzecionek
- Faculty of Chemistry, Warsaw University of Technology, 3 Noakowskiego Street, Warsaw 00-664, Poland
| | - Grzegorz Matyszczak
- Faculty of Chemistry, Warsaw University of Technology, 3 Noakowskiego Street, Warsaw 00-664, Poland
| | - Aleksandra Bandzerewicz
- Faculty of Chemistry, Warsaw University of Technology, 3 Noakowskiego Street, Warsaw 00-664, Poland
| | - Paweł Ruśkowski
- Faculty of Chemistry, Warsaw University of Technology, 3 Noakowskiego Street, Warsaw 00-664, Poland
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32
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Mendonça FG, Menezes IRS, Silva IF, Lago RM. Multifunctional glycerol/citric acid crosslinked polymer hydrophilic gel with absorptive and reducing properties. NEW J CHEM 2021. [DOI: 10.1039/d0nj06138g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Multifunctional hydrogel based on glycerol/citric acid presents absorptive and reducing capacities, affording a hybrid gel containing AgNPs in the matrix.
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Affiliation(s)
- Fernanda G. Mendonça
- Departamento de Química
- ICEx
- Universidade Federal de Minas Gerais
- Belo Horizonte
- Brazil
| | | | - Ingrid F. Silva
- Departamento de Química
- ICEx
- Universidade Federal de Minas Gerais
- Belo Horizonte
- Brazil
| | - Rochel M. Lago
- Departamento de Química
- ICEx
- Universidade Federal de Minas Gerais
- Belo Horizonte
- Brazil
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33
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Oliveira ACS, Ugucioni JC, Borges SV. Effect of glutaraldehyde/glycerol ratios on the properties of chitosan films. J FOOD PROCESS PRES 2020. [DOI: 10.1111/jfpp.15060] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
| | | | - Soraia V. Borges
- Department of Physics Federal University of Lavras Lavras Brazil
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Thermo-Mechanical Properties of a Wood Fiber Insulation Board Using a Bio-Based Adhesive as a Binder. BUILDINGS 2020. [DOI: 10.3390/buildings10090152] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The goal of the present study was to develop a low-density thermal insulation board using wood fibers and a bio-based adhesive as a binder, which was prepared from a crude glycerol and citric acid mixture. The physical and mechanical properties of insulation boards manufactured using two ratios of crude glycerol and citric acid (1:0.66 and 1:1 mol/mol) and two adhesive contents (14% and 20%) were evaluated. The results show that the insulation boards with a range of density between 332 to 338 kg m−3 present thermal conductivity values between 0.064 W/m-K and 0.066 W/m-K. The effect of adhesive content was very significant for certain mechanical properties (tensile strength perpendicular to surface and compressive strength). The tensile strength (internal bond) increased between 20% and 36% with the increased adhesive content. In contrast, the compressive strength decreased between 7% and 15%. The thermo-mechanical properties obtained of insulation boards such as thermal conductivity, traverse strength, tensile strength parallel and perpendicular to surface, and compressive strength are in accordance with the requirements of the American Society for Testing and Materials C208-12 standard for different uses. The results confirm the potential of crude glycerol and citric acid mixture to be used as an adhesive in the wood fiber insulation boards’ manufacturing for sustainability purposes.
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Kolbuk D, Jeznach O, Wrzecionek M, Gadomska-Gajadhur A. Poly(Glycerol Succinate) as an Eco-Friendly Component of PLLA and PLCL Fibres towards Medical Applications. Polymers (Basel) 2020; 12:E1731. [PMID: 32756398 PMCID: PMC7464260 DOI: 10.3390/polym12081731] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 07/28/2020] [Accepted: 07/29/2020] [Indexed: 02/06/2023] Open
Abstract
This study was conducted as a first step in obtaining eco-friendly fibres for medical applications using a synthesised oligomer poly(glycerol succinate) (PGSu) as an additive for synthetic poly(L-lactic acid) (PLLA) and poly (L-lactide-co-caprolactone) (PLCL). The effects of the oligomer on the structure formation, morphology, crystallisation behaviour, and mechanical properties of electrospun bicomponent fibres were investigated. Nonwovens were investigated by means of scanning electron microscopy (SEM), wide angle X-ray scattering (WAXS), differential scanning calorimetry (DSC), and mechanical testing. The molecular structure of PLLA fibres is influenced by the presence of PGSu mainly acting as an enhancer of molecular orientation. In the case of semicrystalline PLCL, chain mobility was enhanced by the presence of PGSu molecules, and the crystallinity of bicomponent fibres increased in relation to that of pure PLCL. The mechanical properties of bicomponent fibres were influenced by the level of PGSu present and the extent of crystal formation of the main component. An in vitro study conducted using L929 cells confirmed the biocompatible character of all bicomponent fibres.
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Affiliation(s)
- Dorota Kolbuk
- Laboratory of Polymers and Biomaterials, Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawińskiego 5B Street, 02-106 Warsaw, Poland;
| | - Oliwia Jeznach
- Laboratory of Polymers and Biomaterials, Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawińskiego 5B Street, 02-106 Warsaw, Poland;
| | - Michał Wrzecionek
- Faculty of Chemistry of Warsaw University of Technology, Noakowskiego 3 Street, 00-664 Warsaw, Poland;
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Istasse T, Lemaur V, Debroux G, Bockstal L, Lazzaroni R, Richel A. Monosaccharides Dehydration Assisted by Formation of Borate Esters of α-Hydroxyacids in Choline Chloride-Based Low Melting Mixtures. Front Chem 2020; 8:569. [PMID: 32733851 PMCID: PMC7358950 DOI: 10.3389/fchem.2020.00569] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 06/03/2020] [Indexed: 11/28/2022] Open
Abstract
The synthesis of 5-hydroxymethylfurfural (5-HMF) and 2-furfural (2-F) by hexoses and pentoses dehydration is considered as a promising path to produce materials from renewable resources. Low-transition-temperature mixtures (LTTMs) enable selective (>80%) dehydration of ketoses to furanic derivatives at moderate temperature (<100°C). However, aldoses dehydration generally requires higher temperatures and an isomerization catalyst. Chromium trichloride has been reported as one of the most efficient catalyst but its kinetic inertness could limit its performances below 100°C. Consequently, we investigate herein boric acid catalysis of aldoses dehydration in LTTMs based on choline halides and organic acids at 90°C. The limited activity of boric acid regarding furanic compounds synthesis (e.g., 5% 5-HMF yield and 23% glucose conversion after 1 h at 90°C with maleic acid) can be enhanced through tetrahydroxyborate esters (THBE) formation with α-hydroxyacids (e.g., 19% 5-HMF yield and 61% glucose conversion after 1 h at 90°C). THBE formation is however associated with H3O+ generation favoring the appearance of side products (humins). We demonstrate that boric acid catalysis is not straightforward and that the use of THBE under moderate acidity should be further investigated to limit humins formation and promote furanic derivatives synthesis.
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Affiliation(s)
- Thibaut Istasse
- Laboratory of Biomass and Green Technologies, University of Liege-Gembloux Agro-Bio Tech, Gembloux, Belgium
| | - Vincent Lemaur
- Laboratory for Chemistry of Novel Materials, Materials Research Institute, University of Mons, Mons, Belgium
| | - Gwénaëlle Debroux
- Laboratory of Biomass and Green Technologies, University of Liege-Gembloux Agro-Bio Tech, Gembloux, Belgium
| | - Lauris Bockstal
- Laboratory of Biomass and Green Technologies, University of Liege-Gembloux Agro-Bio Tech, Gembloux, Belgium
| | - Roberto Lazzaroni
- Laboratory for Chemistry of Novel Materials, Materials Research Institute, University of Mons, Mons, Belgium
| | - Aurore Richel
- Laboratory of Biomass and Green Technologies, University of Liege-Gembloux Agro-Bio Tech, Gembloux, Belgium
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Lee SH, Md Tahir P, Lum WC, Tan LP, Bawon P, Park BD, Osman Al Edrus SS, Abdullah UH. A Review on Citric Acid as Green Modifying Agent and Binder for Wood. Polymers (Basel) 2020; 12:polym12081692. [PMID: 32751175 PMCID: PMC7464553 DOI: 10.3390/polym12081692] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 07/23/2020] [Accepted: 07/27/2020] [Indexed: 12/15/2022] Open
Abstract
Citric acid (CA) can be found naturally in fruits and vegetables, particularly citrus fruit. CA is widely used in many fields but its usage as a green modifying agent and binder for wood is barely addressed. Esterification is one of the most common chemical reactions applied in wood modification. CA contains three carboxyl groups, making it possible to attain at least two esterification reactions that are required for crosslinking when reacting with the hydroxyl groups of the cell wall polymers. In addition, the reaction could form ester linkages to bring adhesivity and good bonding characteristics, and therefore CA could be used as wood binder too. This paper presents a review concerning the usage of CA as a wood modifying agent and binder. For wood modification, the reaction mechanism between wood and CA and the pros and cons of using CA are discussed. CA and its combination with various reactants and their respective optimum parameters are also compiled in this paper. As for the major wood bonding component, the bonding mechanism and types of wood composites bonded with CA are presented. The best working conditions for the CA in the fabrication of wood-based panels are discussed. In addition, the environmental impacts and future outlook of CA-treated wood and bonded composite are also considered.
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Affiliation(s)
- Seng Hua Lee
- Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia; (P.M.T.); (S.S.O.A.E.)
- Correspondence: (S.H.L.); (L.P.T.); (P.B.)
| | - Paridah Md Tahir
- Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia; (P.M.T.); (S.S.O.A.E.)
| | - Wei Chen Lum
- Institute for Infrastructure Engineering and Sustainable Management (IIESM), Universiti Teknologi MARA, Shah Alam 40450, Selangor, Malaysia;
| | - Li Peng Tan
- Faculty of Veterinary Medicine, Universiti Malaysia Kelantan, Pengkalan Chepa, Kota Bharu 16100, Kelantan, Malaysia
- Correspondence: (S.H.L.); (L.P.T.); (P.B.)
| | - Paiman Bawon
- Faculty of Forestry and Environment, Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia;
- Correspondence: (S.H.L.); (L.P.T.); (P.B.)
| | - Byung-Dae Park
- Department of Wood and Paper Science, Kyungpook National University, Daegu 41566, Korea;
| | - Syeed SaifulAzry Osman Al Edrus
- Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia; (P.M.T.); (S.S.O.A.E.)
| | - Ummi Hani Abdullah
- Faculty of Forestry and Environment, Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia;
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Gleuwitz FR, Sivasankarapillai G, Siqueira G, Friedrich C, Laborie MPG. Lignin in Bio-Based Liquid Crystalline Network Material with Potential for Direct Ink Writing. ACS APPLIED BIO MATERIALS 2020; 3:6049-6058. [DOI: 10.1021/acsabm.0c00661] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- F. Robert Gleuwitz
- Institute of Earth and Environmental Science, Chair of Forest Biomaterials, Faculty of Environment and Natural Resources, University of Freiburg, Freiburg 79085, Germany
- Freiburg Materials Research Centre (FMF), University of Freiburg, Freiburg 79104, Germany
| | - Gopakumar Sivasankarapillai
- Institute of Earth and Environmental Science, Chair of Forest Biomaterials, Faculty of Environment and Natural Resources, University of Freiburg, Freiburg 79085, Germany
- Freiburg Materials Research Centre (FMF), University of Freiburg, Freiburg 79104, Germany
| | - Gilberto Siqueira
- Cellulose and Wood Materials, Empa Material Science and Technology, Dübendorf 8600, Switzerland
| | - Christian Friedrich
- Freiburg Materials Research Centre (FMF), University of Freiburg, Freiburg 79104, Germany
- Institute for Macromolecular Chemistry, University of Freiburg, Freiburg 79104, Germany
| | - Marie-Pierre G. Laborie
- Institute of Earth and Environmental Science, Chair of Forest Biomaterials, Faculty of Environment and Natural Resources, University of Freiburg, Freiburg 79085, Germany
- Freiburg Materials Research Centre (FMF), University of Freiburg, Freiburg 79104, Germany
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Technical Performance Overview of Bio-Based Insulation Materials Compared to Expanded Polystyrene. BUILDINGS 2020. [DOI: 10.3390/buildings10050081] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The energy efficiency of buildings is well documented. However, to improve standards of energy efficiency, the embodied energy of materials included in the envelope is also increasing. Natural fibers like wood and hemp are used to make low environmental impact insulation products. Technical characterizations of five bio-based materials are described and compared to a common, traditional, synthetic-based insulation material, i.e., expanded polystyrene. The study tests the thermal conductivity and the vapor transmission performance, as well as the combustibility of the material. Achieving densities below 60 kg/m3, wood and hemp batt insulation products show thermal conductivity in the same range as expanded polystyrene (0.036 kW/mK). The vapor permeability depends on the geometry of the internal structure of the material. With long fibers are intertwined with interstices, vapor can diffuse and flow through the natural insulation up to three times more than with cellular synthetic (polymer) -based insulation. Having a short ignition times, natural insulation materials are highly combustible. On the other hand, they release a significantly lower amount of smoke and heat during combustion, making them safer than the expanded polystyrene. The behavior of a bio-based building envelopes needs to be assessed to understand the hygrothermal characteristics of these nontraditional materials which are currently being used in building systems.
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Anti-Frothing Effect of Poultry Feathers in Bio-Based, Polycondensation-Type Thermoset Composites. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10062150] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The formation of polycondensation-type thermoset resins from natural reactants such as citric and glutaric acid, as well as 1,3-propanediol and glycerol, was studied. Monitoring the mass loss by thermogravimetric analysis (TGA) allowed the rate constants of the esterification to be calculated, which were in the order of 7·10−5 s−1 for glutaric acid and approximately twice as high for citric acid. However, the combination citric acid/glycerol was previously reported to froth up at high conversions, giving rise to foams, which makes the preparation of compact engineering composites challenging. In light of this, we observed that shredded poultry feathers not only increased the conversion and the reaction rate of the combination citric acid/glycerol, but increasing the amount of feathers continuously decreased the number of visible bubbles. The addition of 20 wt% of feathers completely prevented the previously reported frothing and gave rise to compact materials that were macroscopically free of defects. Besides this, the addition of feathers also improved the fire-retardant properties. The tensile properties of the first specimens are still rather low (σ = 11.6 N/mm2, E = 750 N/mm2), but the addition of poultry feathers opens a new path for green thermoset resins.
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Gunarathne V, Rajapaksha AU, Vithanage M, Adassooriya N, Cooray A, Liyanage S, Athapattu B, Rajakaruna N, Igalavithana AD, Hou D, Alessi DS, Ok YS. Heavy metal dissolution mechanisms from electrical industrial sludge. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 696:133922. [PMID: 31446288 DOI: 10.1016/j.scitotenv.2019.133922] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 08/13/2019] [Accepted: 08/13/2019] [Indexed: 06/10/2023]
Abstract
In this paper, we investigate the release of heavy metals from sludge produced from an electrical industry using both organic and inorganic acids. Single and sequential extractions were conducted to assess heavy metals in different phases of the sludge. Metal release from sludge was investigated in the presence of three inorganic acids (nitric, sulfuric, and phosphoric) and three organic acids (acetic, malic, and citric) at concentrations ranging from 0.1 to 2.0 mol L-1. Sequential extraction indicated the presence of Cu primarily in the carbonate fraction, Pb in the residual fraction, and Ni in the FeMn oxide fraction. The cumulative release rates of heavy metals (i.e., Pb, Cu, and Ni) by 1.0 mol L-1 of acid increased with the use of the following acids in the order of: malic < sulfuric < acetic < phosphoric < citric < nitric. Acetic acid exhibited the highest release of Cu, at a rate of 72.62 × 10-11 mol m-2 s-1 at pH 1, and malic acid drove the release of Pb at a maximum rate of 3.90 × 10-11 mol m-2 s-1. Meanwhile, nitric acid provided the maximum rate of Ni release (0.23 × 10-11 mol m-2 s-1) at pH 1. The high rate of metal release by organic acids is explained through ligand-promoted mechanisms that enhance the release of metal ions from the sludge. The results from our study emphasize that an understanding of the metal release mechanism is key to selecting the optimal acid for the maximum recovery of heavy metals.
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Affiliation(s)
- Viraj Gunarathne
- Ecosphere Resilience Research Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Sri Lanka
| | - Anushka Upamali Rajapaksha
- Ecosphere Resilience Research Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Sri Lanka; Instrument Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Sri Lanka.
| | - Meththika Vithanage
- Ecosphere Resilience Research Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Sri Lanka; Instrument Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Sri Lanka
| | - Nadeesh Adassooriya
- Department of Food Science and Technology, Wayamba University of Sri Lanka, Makandura, Gonawila 60170, Sri Lanka
| | - Asitha Cooray
- Instrument Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Sri Lanka; Department of Chemistry, Faculty of Applied Sciences, University of Sri Jayewardenepura, Sri Lanka
| | - Sudantha Liyanage
- Department of Chemistry, Faculty of Applied Sciences, University of Sri Jayewardenepura, Sri Lanka
| | - Bandunee Athapattu
- Department of Civil Engineering, The Open University of Sri Lanka, Nawala, Nugegoda, Sri Lanka
| | - Nishanta Rajakaruna
- Biological Sciences Department, California Polytechnic State University, San Luis Obispo, CA 93407, USA; Unit for Environmental Sciences and Management, North-West University, Private Bag X6001, Potchefstroom 2520, South Africa
| | - Avanthi Deshani Igalavithana
- Korea Biochar Research Center & Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Deyi Hou
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Daniel S Alessi
- Department of Earth and Atmospheric Sciences, University of Alberta, AB T6G 2E3, Canada
| | - Yong Sik Ok
- Korea Biochar Research Center & Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea.
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Chin SF, Romainor ANB, Pang SC, Lihan S. Antimicrobial starch-citrate hydrogel for potential applications as drug delivery carriers. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.101239] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Post W, Susa A, Blaauw R, Molenveld K, Knoop RJI. A Review on the Potential and Limitations of Recyclable Thermosets for Structural Applications. POLYM REV 2019. [DOI: 10.1080/15583724.2019.1673406] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Wouter Post
- Wageningen Food and Biobased Research, Wageningen, The Netherlands
| | - Arijana Susa
- Wageningen Food and Biobased Research, Wageningen, The Netherlands
| | - Rolf Blaauw
- Wageningen Food and Biobased Research, Wageningen, The Netherlands
| | - Karin Molenveld
- Wageningen Food and Biobased Research, Wageningen, The Netherlands
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Hadinugroho W, Martodihardjo S, Fudholi A, Riyanto S. Esterification of citric acid with locust bean gum. Heliyon 2019; 5:e02337. [PMID: 31485527 PMCID: PMC6716352 DOI: 10.1016/j.heliyon.2019.e02337] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 07/02/2019] [Accepted: 08/15/2019] [Indexed: 12/02/2022] Open
Abstract
Esterification of citric acid (CA) with locust bean gum (LBG) was prepared by hydrochloric acid (HCl) as a catalyst and UV irradiation (254 nm) as esterification energy. This study aims to determine the best conditions of esterification. Other than that, it is to know the effect of amount HCl and UV irradiation time for the esterification process of CA with LBG. The amounts of HCl are 0.18 and 0.30 M, while the variations of UV irradiation time are 75 and 100 minutes. Polyester (CA-LBG) were characterized by Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), X-ray diffractometer (XRD), esterification degree, and viscosity. Parameters for determining the best conditions for esterification are esterification degree and viscosity. The best conditions of esterification were obtained by using 0.30 M mL HCl and 100 minutes of UV irradiation time resulted in CA-LBG having a value of esterification degree 9.69 % and viscosity 7.46 cPs. HCl accelerates protonation on the O atoms and the formation of positive C atoms of carbonyl groups of citric acid. The time of UV irradiation gives the longer energy for the bond formation between the positive C atoms of the carbonyl group and the O atoms of the hydroxyl group at C-6 atoms of mannose and galactose.
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Affiliation(s)
- Wuryanto Hadinugroho
- Department of Pharmaceutical, Faculty of Pharmacy, Widya Mandala Surabaya Catholic University, Kalisari Selatan no. 1 Pakuwon City, Surabaya, Indonesia.,Department of Pharmaceutical, Faculty of Pharmacy, Gadjah Mada University, Sekip Utara, Yogyakarta, Indonesia
| | - Suwaldi Martodihardjo
- Department of Pharmaceutical, Faculty of Pharmacy, Gadjah Mada University, Sekip Utara, Yogyakarta, Indonesia
| | - Achmad Fudholi
- Department of Pharmaceutical, Faculty of Pharmacy, Gadjah Mada University, Sekip Utara, Yogyakarta, Indonesia
| | - Sugeng Riyanto
- Department of Pharmaceutical, Faculty of Pharmacy, Gadjah Mada University, Sekip Utara, Yogyakarta, Indonesia
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Wet-Dry Cycling Delays the Gelation of Hyperbranched Polyesters: Implications to the Origin of Life. Life (Basel) 2019; 9:life9030056. [PMID: 31266241 PMCID: PMC6789768 DOI: 10.3390/life9030056] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 06/11/2019] [Accepted: 06/28/2019] [Indexed: 11/17/2022] Open
Abstract
In extant biology, biopolymers perform multiple crucial functions. The biopolymers are synthesized by enzyme-controlled biosystems that would not have been available at the earliest stages of chemical evolution and consist of correctly sequenced and/or linked monomers. Some of the abiotic "messy" polymers approximate some functions of biopolymers. Condensation polymers are an attractive search target for abiotic functional polymers since principal polymers of life are produced by condensation and since condensation allows for the accurate construction of high polymers. Herein the formation of hyperbranched polyesters that have been previously used in the construction of enzyme-like catalytic complexes is explored. The experimental setup compares between the branched polyesters prepared under mild continuous heating and the wet-dry cycling associated with environmental conditions, such as dew formation or tidal activities. The results reveal that periodic wetting during which partial hydrolysis of the polyester occurs, helps to control the chain growth and delays the gel transition, a mechanism contributing to the tar formation. Moreover, the NMR and mass spec analyses indicate that continuously dried samples contain higher quantities of crosslinked and macrocyclic products, whereas cycled systems are enriched in branched structures. Ostensibly, environmental conditions have the ability to exert a rudimentary pressure to selectively enrich the polyesterification products in polymers of different structures and properties. At the early stages of chemical evolution, in the absence of biological machinery, this example of environmental control could have been for selectivity in chemical systems. As expected in marginally controlled systems, the identification of each component of the heterogeneous system has proved challenging, but it is not crucial for drawing the conclusions.
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Biodegradable nanocomposite of glycerol citrate polyester and ultralong hydroxyapatite nanowires with improved mechanical properties and low acidity. J Colloid Interface Sci 2018; 530:9-15. [DOI: 10.1016/j.jcis.2018.06.059] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 06/18/2018] [Accepted: 06/21/2018] [Indexed: 11/23/2022]
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Landim LB, Pinto JC, Cabral-Albuquerque EC, Cunha S, Fialho RL. Synthesis and characterization of copolymers of urea-succinic acid-ethylene glycol and copolymers of urea-succinic acid-glycerol. POLYM ENG SCI 2018. [DOI: 10.1002/pen.24746] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lucas B. Landim
- Universidade Federal da Bahia/Programa de Pós-graduação em Engenharia Industrial, Escola Politécnica, Rua Aristides Novis, n° 02; Federação, CEP: 40.210-630 Salvador/BA Brasil
| | - José Carlos Pinto
- Universidade Federal do Rio de Janeiro/Programa de Pós-graduação em Engenharia Química-COPPE, Cidade Universitária, CP: 68502; Rio de Janeiro, 21.941-972 RJ Brasil
| | - Elaine C.M. Cabral-Albuquerque
- Universidade Federal da Bahia/Programa de Pós-graduação em Engenharia Industrial, Escola Politécnica, Rua Aristides Novis, n° 02; Federação, CEP: 40.210-630 Salvador/BA Brasil
| | - Silvio Cunha
- Instituto de Química; Universidade Federal da Bahia/Programa de Pós-graduação em Química, Rua Barão de Jeremoabo, n° 147; Ondina, CEP: 40.170-115 Salvador/BA Brasil
| | - Rosana L. Fialho
- Universidade Federal da Bahia/Programa de Pós-graduação em Engenharia Industrial, Escola Politécnica, Rua Aristides Novis, n° 02; Federação, CEP: 40.210-630 Salvador/BA Brasil
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Morjan RY, El-Kurdi SM, Azarah JN, Eleiwa NA, Abu-Teim OS, Awadallah AM, Raftery J, Gardiner JM. Inversion dimers dominate the crystal packing in the structure of trimethyl citrate (trimethyl 2-hy-droxy-propane-1,2,3-tri-carboxyl-ate). Acta Crystallogr E Crystallogr Commun 2018; 74:1362-1365. [PMID: 30225132 PMCID: PMC6127686 DOI: 10.1107/s2056989018011222] [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: 07/27/2018] [Accepted: 08/06/2018] [Indexed: 11/20/2022]
Abstract
Trimethyl citrate, C9H14O7 (systematic name: trimethyl 2-hy-droxy-propane-1,2,3-tri-carboxyl-ate), 2, was prepared by the esterification of citric acid and methanol in the presence of thionyl chloride at 273 K. The bond lengths and angles in 2 compare closely with those observed in citric acid. The C-C bonds adjacent to the terminal carboxyl groups are significantly shorter than those around the central C atom. The central carboxyl-ate group and the hy-droxy group occur in the normal planar arrangement with an r.m.s. deviation of 0.0171 Å from the mean plane involving all six atoms in the central unit. The crystal structure is almost completely dominated by the formation of inversion dimers through an O-H⋯O hydrogen bond, together with an extensive array of weaker C-H⋯O contacts. These generate a three-dimensional network structure with mol-ecules stacked along the c-axis direction.
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Affiliation(s)
- Rami Y. Morjan
- Department of Chemistry, Islamic University of Gaza, Gaza PO Box 108, Palestine
| | - Said M. El-Kurdi
- Department of Chemistry, Islamic University of Gaza, Gaza PO Box 108, Palestine
| | - Jannat N. Azarah
- Department of Chemistry, Islamic University of Gaza, Gaza PO Box 108, Palestine
| | - Neda A. Eleiwa
- Department of Chemistry, Al-Azhar University of Gaza, Gaza PO Box 1277, Palestine
| | - Omar S. Abu-Teim
- Department of Chemistry, Al-Azhar University of Gaza, Gaza PO Box 1277, Palestine
| | - Adel M. Awadallah
- Department of Chemistry, Islamic University of Gaza, Gaza PO Box 108, Palestine
| | - James Raftery
- School of Chemistry, The University of Manchester, Brunswick Street, Manchester M13 9PL, UK
| | - John M. Gardiner
- Manchester Institute of Biotechnology, School of Chemistry and EPS, The University of Manchester, Manchester M1 7DN, UK
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Synthesis, characterization & cytocompatibility of poly (diol-co-tricarballylate) based thermally crosslinked elastomers for drug delivery & tissue engineering applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 93:254-264. [PMID: 30274057 DOI: 10.1016/j.msec.2018.07.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 05/20/2018] [Accepted: 07/11/2018] [Indexed: 11/24/2022]
Abstract
The aim of this study was to investigate the synthesis and in vitro characterization of thermoset biodegradable poly (diol-co-tricarballylate) (PDT) elastomeric polymers for the purpose of their use in implantable drug delivery and tissue engineering applications. The synthesis was based on thermal crosslinking technique via a polycondensation reaction of tricarballylic acid with aliphatic diols of varying chain lengths (C6-C12). PDT prepolymers were synthesized at 140 °C for 20 min. After purification, the prepolymers were molded and kept at 120 °C for 18 h under vacuum to complete the crosslinking process. PDT prepolymers were characterized by DSC, FT-IR, 1H NMR and GPC. The PDT elastomers were also subjected to thermal and structural analysis, as well as sol content, mechanical testing, in vitro degradation and cytocompatibility studies. The mechanical properties and sol content were found to be dependent on synthesis conditions and can be controlled by manipulating the crosslinking density and number of methylene groups in the chain of precursor aliphatic diol. The family of thermally crosslinked PDT biodegradable polyesters were successfully prepared and characterized; besides they have promising use in drug delivery and other biomedical tissue engineering applications.
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Zhao Y, Moser C, Henriksson G. Transparent Composites Made from Tunicate Cellulose Membranes and Environmentally Friendly Polyester. CHEMSUSCHEM 2018; 11:1728-1735. [PMID: 29644799 DOI: 10.1002/cssc.201800627] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 04/06/2018] [Indexed: 06/08/2023]
Abstract
A series of optically transparent composites were made by using tunicate cellulose membranes, in which the naturally organized cellulose microfibrillar network structure of tunicate tunics was preserved and used as the template and a solution of glycerol and citric acid at different molar ratios was used as the matrix. Polymerization through ester bond formation occurred at elevated temperatures without any catalyst, and water was released as the only byproduct. The obtained composites had a uniform and dense structure. Thus, the produced glycerol citrate polyester improved the transparency of the tunicate cellulose membrane while the cellulose membrane provided rigidity and strength to the prepared composite. The interaction between cellulose and polyester afforded the composites high thermal stability. Additionally, the composites were optically transparent and their shape, strength, and flexibility were adjustable by varying the formulation and reaction conditions. These composites of cellulose, glycerol, and citric acid are renewable and biocompatible and have many potential applications as structural materials in packaging, flexible displays, and solar cells.
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Affiliation(s)
- Yadong Zhao
- Fibre and Polymer Technology, KTH, Royal Institute of Technology, Teknikringen 56, 11428, Stockholm, Sweden
| | - Carl Moser
- Fibre and Polymer Technology, KTH, Royal Institute of Technology, Teknikringen 56, 11428, Stockholm, Sweden
| | - Gunnar Henriksson
- Fibre and Polymer Technology, KTH, Royal Institute of Technology, Teknikringen 56, 11428, Stockholm, Sweden
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