1
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Cao Q, Chen J, Wang M, Wang Z, Wang W, Shen Y, Xue Y, Li B, Ma Y, Yao Y, Wu H. Superabsorbent carboxymethyl cellulose-based hydrogel fabricated by liquid-metal-induced double crosslinking polymerisation. Carbohydr Polym 2024; 331:121910. [PMID: 38388046 DOI: 10.1016/j.carbpol.2024.121910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 01/28/2024] [Accepted: 01/31/2024] [Indexed: 02/24/2024]
Abstract
Herein, we introduced a liquid-metal/polymerisable deep eutectic solvent (LM/PDES) system to the carboxymethyl cellulose (CMC) and acrylic acid solution to prepare a double-cross-linked CMC-polyacrylic acid (PAA)-LM/PDES superabsorbent hydrogel via graft crosslinking polymerisation for 5 min. FTIR and XRD provided evidence for the coordinate crosslinking between Ga3+ and carboxy groups in the CMC-PAA-LM/PDES gel structure and chemical crosslinking between CMC and PAA components. The pore size of the obtained hydrogels gradually decreases with the increase of LM-AA/PDES content. The rigid CMC polysaccharide chains increased the distance between the ionic groups on the flexible PAA molecular chains, resulting in high osmotic pressure. In addition, the synergistic effects of hydrophilic groups, electrostatic repulsion, macroporous structures and double crosslinking on the CMC and PAA structures provided a driving force and space for the gel to absorb electrolyte containing liquid. The absorption capacity of the CMC-PAA-LM/PDES gel for physiological saline reached 97 g/g, which exceeded that of a single cross-linked CMC-PAA gel and a reported superabsorbent material (71 g/g). This work solved the problem of long heating times and insufficient mechanical properties for the preparation of superabsorbent gels, providing a theoretical reference for improving the absorption capacity of superabsorbent materials for electrolyte-containing aqueous solutions.
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Affiliation(s)
- Qi Cao
- School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an 710048, Shaanxi, China
| | - Jing Chen
- School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an 710048, Shaanxi, China
| | - Miao Wang
- School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an 710048, Shaanxi, China
| | - Zhigang Wang
- School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an 710048, Shaanxi, China
| | - Wenjun Wang
- Shaanxi Textile Science Institute Co.,Ltd., Xi'an 710038, China
| | - Yanqin Shen
- School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an 710048, Shaanxi, China; Key Laboratory of Functional Textile Material and Product, Xi'an Polytechnic University, Ministry of Education, Xi'an 710048, Shaanxi, China
| | - Ying Xue
- School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an 710048, Shaanxi, China; Key Laboratory of Functional Textile Material and Product, Xi'an Polytechnic University, Ministry of Education, Xi'an 710048, Shaanxi, China
| | - Bo Li
- School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an 710048, Shaanxi, China; Key Laboratory of Functional Textile Material and Product, Xi'an Polytechnic University, Ministry of Education, Xi'an 710048, Shaanxi, China
| | - Yanli Ma
- School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an 710048, Shaanxi, China; Key Laboratory of Functional Textile Material and Product, Xi'an Polytechnic University, Ministry of Education, Xi'an 710048, Shaanxi, China
| | - Yijun Yao
- School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an 710048, Shaanxi, China; Key Laboratory of Functional Textile Material and Product, Xi'an Polytechnic University, Ministry of Education, Xi'an 710048, Shaanxi, China; Zhejiang QIT Testing Technology Service Co., Ltd, Shaoxing 312081, Zhejiang, China.
| | - Hailiang Wu
- School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an 710048, Shaanxi, China; Key Laboratory of Functional Textile Material and Product, Xi'an Polytechnic University, Ministry of Education, Xi'an 710048, Shaanxi, China.
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Ghosh S, Mondol S, Lahiri D, Nag M, Sarkar T, Pati S, Pandit S, Alarfaj AA, Mohd Amin MF, Edinur HA, Ahmad Mohd Zain MR, Ray RR. Biogenic silver nanoparticles (AgNPs) from Tinosporacordifolia leaves: An effective antibiofilm agent against Staphylococcus aureus ATCC 23235. Front Chem 2023; 11:1118454. [PMID: 36959877 PMCID: PMC10028272 DOI: 10.3389/fchem.2023.1118454] [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: 12/07/2022] [Accepted: 01/30/2023] [Indexed: 03/09/2023] Open
Abstract
Medicinal plants are long known for their therapeutic applications. Tinospora cordifolia (commonly called gulancha or heart-leaved moonseed plant), a herbaceous creeper widely has been found to have antimicrobial, anti-inflammatory, anti-diabetic, and anti-cancer properties. However, there remains a dearth of reports regarding its antibiofilm activities. In the present study, the anti-biofilm activities of phytoextractof T. cordifolia and the silver nanoparticles made from this phytoextract were tested against the biofilm of S.taphylococcus aureus, one of the major nosocomial infection-producing bacteria taking tetracycline antibiotic as control. Both phytoextract from the leaves of T. cordifolia, and the biogenic AgNPs from the leaf extract of T. cordifolia, were found successful in reducing the biofilm of Staphylococcus aureus. The biogenic AgNPs formed were characterized by UV- Vis spectroscopy, Field emission Scanning Electron Microscopy (FE- SEM), and Dynamic light scattering (DLS) technique. FE- SEM images showed that the AgNPs were of size ranging between 30 and 50 nm and were stable in nature, as depicted by the zeta potential analyzer. MIC values for phytoextract and AgNPs were found to be 180 mg/mL and 150 μg/mL against S. aureusrespectively. The antibiofilm properties of the AgNPs and phytoextract were analyzed using the CV assay and MTT assay for determining the reduction of biofilms. Reduction in viability count and revival of the S. aureus ATCC 23235 biofilm cells were analyzed followed by the enfeeblement of the EPS matrix to quantify the reduction in the contents of carbohydrates, proteins and eDNA. The SEM analyses clearly indicated that although the phytoextracts could destroy the biofilm network of S. aureuscells yet the biogenicallysynthesizedAgNPs were more effective in biofilm disruption. Fourier Transformed Infrared Radiations (FT- IR) analyses revealed that the AgNPs could bring about more exopolysaccharide (EPS) destruction in comparison to the phytoextract. The antibiofilm activities of AgNPs made from the phytoextract were found to be much more effective than the non-conjugated phytoextract, indicating the future prospect of using such particles for combatting biofilm-mediated infections caused by S aureus.
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Affiliation(s)
- Sreejita Ghosh
- Department of Biotechnology, MaulanaAbulKalam Azad University of Technology, Kolkata, West Bengal, India
| | - Somdutta Mondol
- Department of Biotechnology, MaulanaAbulKalam Azad University of Technology, Kolkata, West Bengal, India
| | - Dibyajit Lahiri
- Department of Biotechnology, University of Engineering and Management, Kolkata, West Bengal, India
| | - Moupriya Nag
- Department of Biotechnology, University of Engineering and Management, Kolkata, West Bengal, India
| | - Tanmay Sarkar
- Department of Food Processing Technology, Malda Polytechnic, West Bengal State Council of Technical Education, Govt. of West Bengal, Malda, India
| | - Siddhartha Pati
- Skills innovation and Academic network (SIAN) Institute-ABC, Balasore, Odisha, India
- NatNov Private Limited, Greater Noida, Odisha, India
| | - Soumya Pandit
- Department of Life Science, Sharda University, Noida, India
| | - Abdullah A. Alarfaj
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Mohamad Faiz Mohd Amin
- Environmental Technology Division, School of Industrial Technology, UniversitiSains Malaysia, Penang, Malaysia
| | - Hisham Atan Edinur
- Renewable Biomass Transformation Cluster, School of Industrial Technology, UniversitiSains Malaysia, Penang, Malaysia
| | - Muhammad Rajaei Ahmad Mohd Zain
- School of Health Sciences, UniversitiSains Malaysia, Health Campus, Kelantan, Malaysia
- *Correspondence: Muhammad Rajaei Ahmad Mohd Zain, ; Rina Rani Ray,
| | - Rina Rani Ray
- Department of Biotechnology, MaulanaAbulKalam Azad University of Technology, Kolkata, West Bengal, India
- *Correspondence: Muhammad Rajaei Ahmad Mohd Zain, ; Rina Rani Ray,
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3
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Bonetti L, Fiorati A, D’Agostino A, Pelacani CM, Chiesa R, Farè S, De Nardo L. Smart Methylcellulose Hydrogels for pH-Triggered Delivery of Silver Nanoparticles. Gels 2022; 8:gels8050298. [PMID: 35621596 PMCID: PMC9140787 DOI: 10.3390/gels8050298] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 05/05/2022] [Accepted: 05/10/2022] [Indexed: 02/01/2023] Open
Abstract
Infection is a severe complication in chronic wounds, often leading to morbidity or mortality. Current treatments rely on dressings, which frequently contain silver as a broad-spectrum antibacterial agent, although improper dosing can result in severe side effects. This work proposes a novel methylcellulose (MC)-based hydrogel designed for the topical release of silver nanoparticles (AgNPs) via an intelligent mechanism activated by the pH variations in infected wounds. A preliminary optimization of the physicochemical and rheological properties of MC hydrogels allowed defining the optimal processing conditions in terms of crosslinker (citric acid) concentration, crosslinking time, and temperature. MC/AgNPs nanocomposite hydrogels were obtained via an in situ synthesis process, exploiting MC both as a capping and reducing agent. AgNPs with a 12.2 ± 2.8 nm diameter were obtained. MC hydrogels showed a dependence of the swelling and degradation behavior on both pH and temperature and a noteworthy pH-triggered release of AgNPs (release ~10 times higher at pH 12 than pH 4). 1H-NMR analysis revealed the role of alkaline hydrolysis of the ester bonds (i.e., crosslinks) in governing the pH-responsive behavior. Overall, MC/AgNPs hydrogels represent an innovative platform for the pH-triggered release of AgNPs in an alkaline milieu.
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Affiliation(s)
- Lorenzo Bonetti
- Department of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milan, Italy; (A.F.); (A.D.); (C.M.P.); (R.C.); (S.F.); (L.D.N.)
- Correspondence:
| | - Andrea Fiorati
- Department of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milan, Italy; (A.F.); (A.D.); (C.M.P.); (R.C.); (S.F.); (L.D.N.)
- National Interuniversity Consortium of Materials Science and Technology (INSTM), Via Giuseppe Giusti 9, 50121 Florence, Italy
| | - Agnese D’Agostino
- Department of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milan, Italy; (A.F.); (A.D.); (C.M.P.); (R.C.); (S.F.); (L.D.N.)
- National Interuniversity Consortium of Materials Science and Technology (INSTM), Via Giuseppe Giusti 9, 50121 Florence, Italy
| | - Carlo Maria Pelacani
- Department of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milan, Italy; (A.F.); (A.D.); (C.M.P.); (R.C.); (S.F.); (L.D.N.)
| | - Roberto Chiesa
- Department of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milan, Italy; (A.F.); (A.D.); (C.M.P.); (R.C.); (S.F.); (L.D.N.)
- National Interuniversity Consortium of Materials Science and Technology (INSTM), Via Giuseppe Giusti 9, 50121 Florence, Italy
| | - Silvia Farè
- Department of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milan, Italy; (A.F.); (A.D.); (C.M.P.); (R.C.); (S.F.); (L.D.N.)
- National Interuniversity Consortium of Materials Science and Technology (INSTM), Via Giuseppe Giusti 9, 50121 Florence, Italy
| | - Luigi De Nardo
- Department of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milan, Italy; (A.F.); (A.D.); (C.M.P.); (R.C.); (S.F.); (L.D.N.)
- National Interuniversity Consortium of Materials Science and Technology (INSTM), Via Giuseppe Giusti 9, 50121 Florence, Italy
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4
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Pourkhatoun M, Kalantari M, Kamyabi A, Moradi A. Preparation and Characterization of
pH‐Sensitive
Carboxymethyl
Cellulose‐Based
Hydrogels for Controlled Drug Delivery. POLYM INT 2022. [DOI: 10.1002/pi.6382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Mina Pourkhatoun
- Department of Chemical engineering, Faculty of Engineering Shahid Bahonar University of Kerman P.O. Box 7616913439 Kerman Iran
| | - Maryam Kalantari
- Department of Chemistry, Faculty of Science Shahid Bahonar University of Kerman P.O. Box 7616913439 Kerman Iran
| | - Ata Kamyabi
- Department of Chemical engineering, Faculty of Engineering Shahid Bahonar University of Kerman P.O. Box 7616913439 Kerman Iran
| | - Ali Moradi
- Department of Chemical engineering, Faculty of Engineering Shahid Bahonar University of Kerman P.O. Box 7616913439 Kerman Iran
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5
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Chen J, Wu J, Raffa P, Picchioni F, Koning CE. Superabsorbent Polymers: From long-established, microplastics generating systems, to sustainable, biodegradable and future proof alternatives. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2021.101475] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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6
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Shaheen N, Khushnood RA, Musarat MA, Alaloul WS. Self-Healing Nano-Concrete for Futuristic Infrastructures: A Review. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2022. [DOI: 10.1007/s13369-022-06562-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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7
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Water-Soluble Starch-Based Copolymers Synthesized by Electron Beam Irradiation: Physicochemical and Functional Characterization. MATERIALS 2022; 15:ma15031061. [PMID: 35161009 PMCID: PMC8839537 DOI: 10.3390/ma15031061] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/24/2022] [Accepted: 01/27/2022] [Indexed: 02/05/2023]
Abstract
Modification of natural polymers for applications in the treatment of waste and surface waters is a continuous concern of researchers and technologists in close relation to the advantages they provide as related to classical polymeric flocculants. In this work, copolymers of starch-graft-polyacrylamide (St-g-PAM) were synthesized by electron beam irradiation used as the free radical initiator by applying different irradiation doses and dose rates. St-g-PAM loaded with ex situ prepared silver nanoparticles was also synthesized by using an accelerated electron beam. The graft copolymers were characterized by chemical analysis, rheology, and differential scanning calorimetry (DSC). The results showed that the level of grafting (monomer conversion coefficient and residual monomer concentration), intrinsic viscosity and thermal behavior (thermodynamic parameters) were influenced by the irradiation dose, dose rate and presence of silver nanoparticles. The flocculation performances of the synthesized copolymers were also tested on water from the meat industry in experiments at the laboratory level. In the coagulation–flocculation process, the copolymer aqueous solutions showed good efficiency to improve different water quality indicators.
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8
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Guo J, Shi W, Li J, Zhai Z. Effects of poly-γ-glutamic acid and poly-γ-glutamic acid super absorbent polymer on the sandy loam soil hydro-physical properties. PLoS One 2021; 16:e0245365. [PMID: 33434231 PMCID: PMC7983855 DOI: 10.1371/journal.pone.0245365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 12/28/2020] [Indexed: 11/26/2022] Open
Abstract
The main forms of poly-γ-glutamic acid (γ-PGA) applied in agriculture include
agricultural γ-PGA and γ-PGA super absorbent polymer (SAP). Laboratory
experiments were conducted with a check treatment CK (no γ-PGA added) and two
different forms of γ-PGA added to sandy loam soil (T and TM stand for γ-PGA and
γ-PGA SAP) at four different soil mass ratios (0.05% (1), 0.10% (2), 0.15% (3)
and 0.20% (4)) to determine their effects on sandy loam soil hydro-physical
properties. Both of them could reduce the cumulative infiltration of soil water.
The total available water (TAW) which the soil water content (SWC) from field
water capacity (FC) to permanent wilting point (PWP) after γ-PGA added into
sandy loam soil had no significant different compared with CK, and the TAW was
highest at the treatment of γ-PGA with 0.10% addition amount into sandy loam
soil. However, the TAW of sandy loam soil increased dramatically with the γ-PGA
SAP addition amount increasing. TM3 had the highest soil water absorption among
the treatments with γ-PGA SAP. The T1 to T4 treatments with γ-PGA addition
slightly prolonged retention time (RT) when SWC varied from FC to PWP compared
with CK. For γ-PGA SAP addition treatments, the time for SWC varied from FC to
PWP was 1.48 times (TM1), 1.88 times (TM2), 2.01 times (TM3) and 2.87 times
(TM4) longer than that of CK, respectively. The results of this study will
provide further information for the use of these materials in agricultural
application.
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Affiliation(s)
- Jianzhong Guo
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an, China
| | - Wenjuan Shi
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an, China
| | - Jiake Li
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an, China
| | - Zhongmin Zhai
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an, China
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9
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Malatji N, Makhado E, Ramohlola KE, Modibane KD, Maponya TC, Monama GR, Hato MJ. Synthesis and characterization of magnetic clay-based carboxymethyl cellulose-acrylic acid hydrogel nanocomposite for methylene blue dye removal from aqueous solution. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:44089-44105. [PMID: 32761344 DOI: 10.1007/s11356-020-10166-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Accepted: 07/16/2020] [Indexed: 06/11/2023]
Abstract
Carboxymethyl cellulose/poly(acrylic acid) (CMC-cl-pAA) hydrogel and its magnetic hydrogel nanocomposite (CMC-cl-pAA/Fe3O4-C30B) were prepared via a free radical polymerization method and used as adsorbents for adsorption of methylene blue (MB) dye. The samples were characterized using Fourier transform infrared, X-ray diffraction, thermogravimetric analysis, scanning electron microscopy coupled with energy-dispersive X-ray spectrometer, high-resolution transmission electron microscope, and dynamic mechanical analysis. The adsorption performance of the prepared adsorbents was studied in a batch mode. Adsorption kinetics and isotherm models were applied in the experimental data to evaluate the nature as well as the mechanism of adsorption processes. It was deduced that the adsorption followed the pseudo-second-order rate equation and Langmuir isotherm models. The maximum adsorption capacities were found to be 1109.55 and 1081.60 mg/g for CMC-cl-pAA hydrogel and CMC-cl-pAA/Fe3O4-C30B hydrogel nanocomposite, respectively. The adsorption thermodynamic studies suggested that the adsorption process was spontaneous and endothermic for CMC-cl-pAA/Fe3O4-C30B hydrogel nanocomposite. The homogeneous dispersion of the Fe3O4-C30B nanocomposite in the CMC-cl-pAA hydrogel significantly improved the thermal stability, mechanical strength, and excellent regeneration stability. This study demonstrates the application potential of the fascinating properties of CMC-cl-pAA/Fe3O4-C30B hydrogel nanocomposite as a highly efficient adsorbent in the removal of organic dyes from aqueous solution.
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Affiliation(s)
- Nompumelelo Malatji
- Nanotechnology Research Lab, Department of Chemistry, School of Physical and Mineral Sciences, University of Limpopo (Turfloop), Sovenga, 0727, Polokwane, South Africa
| | - Edwin Makhado
- Nanotechnology Research Lab, Department of Chemistry, School of Physical and Mineral Sciences, University of Limpopo (Turfloop), Sovenga, 0727, Polokwane, South Africa.
| | - Kabelo Edmond Ramohlola
- Nanotechnology Research Lab, Department of Chemistry, School of Physical and Mineral Sciences, University of Limpopo (Turfloop), Sovenga, 0727, Polokwane, South Africa
| | - Kwena Desmond Modibane
- Nanotechnology Research Lab, Department of Chemistry, School of Physical and Mineral Sciences, University of Limpopo (Turfloop), Sovenga, 0727, Polokwane, South Africa.
| | - Thabiso Carol Maponya
- Nanotechnology Research Lab, Department of Chemistry, School of Physical and Mineral Sciences, University of Limpopo (Turfloop), Sovenga, 0727, Polokwane, South Africa
| | - Gobeng Release Monama
- Nanotechnology Research Lab, Department of Chemistry, School of Physical and Mineral Sciences, University of Limpopo (Turfloop), Sovenga, 0727, Polokwane, South Africa
| | - Mpitloane Joseph Hato
- Nanotechnology Research Lab, Department of Chemistry, School of Physical and Mineral Sciences, University of Limpopo (Turfloop), Sovenga, 0727, Polokwane, South Africa.
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10
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Alavi M, Nokhodchi A. Antimicrobial and Wound Treatment Aspects of Micro‐ and Nanoformulations of Carboxymethyl, Dialdehyde, and TEMPO‐Oxidized Derivatives of Cellulose: Recent Advances. Macromol Biosci 2020; 20:e1900362. [DOI: 10.1002/mabi.201900362] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 12/09/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Mehran Alavi
- Nanobiotechnology LaboratoryDepartment of Nanobiotechnology Faculty of ScienceRazi University Kermanshah 25529 Iran
| | - Ali Nokhodchi
- Pharmaceuics Research laboratoryArundel BuildingSchool of Life SciencesUniversity of Sussex Brighton BN1 9QJ UK
- Drug Applied Research Center and Faculty of PharmacyTabriz University of Medical Sciences Tabriz 61554 Iran
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11
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Zhang M, Zhang S, Chen Z, Wang M, Cao J, Wang R. Preparation and Characterization of Superabsorbent Polymers Based on Sawdust. Polymers (Basel) 2019; 11:polym11111891. [PMID: 31731757 PMCID: PMC6918447 DOI: 10.3390/polym11111891] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 11/11/2019] [Accepted: 11/13/2019] [Indexed: 02/07/2023] Open
Abstract
Sawdust, a cheap by-product of the timber and forestry industry, was considered as a framework structure to prepare superabsorbent polymer with acrylic acid (AA) and acrylamide (AM), the synthetic monomers. The effects of initiator content, crosslinker content, AA content, AM content, degree of neutralization of AA, and reaction temperature on the swelling rate of superabsorbent polymer were investigated. The synthesized polymer was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). Under optimal synthesis conditions, the results showed that the swelling rate of the polymer in deionized water and 0.9% NaCl solution reached 738.12 and 90.18 g/g, respectively. The polymer exhibits excellent swelling ability, thermal stability, and reusability. After the polymer was introduced into the samples (soil or coal), the water evaporation rate of the samples was significantly reduced, and the saturated water holding capacity and pore structure were also significantly improved.
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Affiliation(s)
- Mingchang Zhang
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China; (M.Z.); (S.Z.); (Z.C.); (J.C.)
| | - Shaodi Zhang
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China; (M.Z.); (S.Z.); (Z.C.); (J.C.)
| | - Zhuoran Chen
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China; (M.Z.); (S.Z.); (Z.C.); (J.C.)
| | - Mingzhi Wang
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China; (M.Z.); (S.Z.); (Z.C.); (J.C.)
- Correspondence: ; Tel.: +86-010-62336225
| | - Jinzhen Cao
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China; (M.Z.); (S.Z.); (Z.C.); (J.C.)
| | - Ruoshui Wang
- School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China;
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12
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Demir D, Özdemir S, Yalçın MS, Bölgen N. Chitosan cryogel microspheres decorated with silver nanoparticles as injectable and antimicrobial scaffolds. INT J POLYM MATER PO 2019. [DOI: 10.1080/00914037.2019.1631823] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Didem Demir
- Chemical Engineering Department, Engineering Faculty, Mersin University, Mersin, Turkey
| | - Sadin Özdemir
- Food Processing Programme, Technical Science Vocational School, Mersin University, Mersin, Turkey
| | - M. Serkan Yalçın
- Chemical and Chemical Processing Technologies Department, Technical Science Vocational School, Mersin University, Yenisehir, Mersin, TR-33343, Turkey
| | - Nimet Bölgen
- Chemical Engineering Department, Engineering Faculty, Mersin University, Mersin, Turkey
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13
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Long L, Li F, Shu M, Zhang C, Weng Y. Fabrication and Application of Carboxymethyl Cellulose-Carbon Nanotube Aerogels. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E1867. [PMID: 31181867 PMCID: PMC6600946 DOI: 10.3390/ma12111867] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 06/03/2019] [Accepted: 06/07/2019] [Indexed: 02/06/2023]
Abstract
In this study, composite aerogels with excellent mechanical properties were prepared by using carboxymethyl cellulose (CMC) as raw materials, with carboxylic carbon nanotubes (CNTs) as reinforcement. By controlling the mass fraction of CNTs, composite aerogels with different CNTs were prepared, and the surface morphology, specific surface area, compressive modulus, density and adsorption capacities towards different oils were studied. Compared to the pure CMC aerogel, the specific surface areas of CMC/CNTs were decreased because of the agglomeration of CNTs. However, the densities of composite aerogels were lower than pure CMC aerogel. This is because the CNTs were first dispersed in water and then added to CMC solution. The results indicated that it was easy for the low CMC initial concentration to be converted to low density aerogel. The compressive modulus was increased from 0.3 MPa of pure CMC aerogel to 0.5 MPa of 5 wt % CMC/CNTs aerogel. Meanwhile, the prepared aerogels showed promising properties as the adsorption materials. Because of the high viscosity, liquid possesses strong adhesion to the pore wall, the adsorption capacity of the CMC aerogel to the liquid increases as the viscosity of the liquid increases.
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Affiliation(s)
- Linyu Long
- School of Materials and Mechanical Engineering, Beijing Technology & Business University, Beijing 100048, China.
| | - Fenfen Li
- School of Materials and Mechanical Engineering, Beijing Technology & Business University, Beijing 100048, China.
| | - Mengying Shu
- School of Materials and Mechanical Engineering, Beijing Technology & Business University, Beijing 100048, China.
| | - Caili Zhang
- School of Materials and Mechanical Engineering, Beijing Technology & Business University, Beijing 100048, China.
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, Beijing Technology and Business University, Beijing 100048, China.
| | - Yunxuan Weng
- School of Materials and Mechanical Engineering, Beijing Technology & Business University, Beijing 100048, China.
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, Beijing Technology and Business University, Beijing 100048, China.
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