1
|
Etminani-Esfahani N, Rahmati A. Effect of chain structures of monomer on hydroxyethyl cellulose-based superabsorbent properties and improvement of chickpeas plant growth of water deficit-stressed. Int J Biol Macromol 2024; 269:131906. [PMID: 38679266 DOI: 10.1016/j.ijbiomac.2024.131906] [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: 11/16/2023] [Revised: 04/09/2024] [Accepted: 04/25/2024] [Indexed: 05/01/2024]
Abstract
The aim of this research was evaluation of the influence of distance between zwitterionic monomer ions on the performance of superabsorbents. For this purpose, two zwitterionic monomers 4-(3-aminopropyl) amino-4-oxo-2-butenoic acid (APOB) and 4-(6-aminohexyl) amino-4-oxo-2-butenoic acid (AHOB) were prepared and applied for synthesis of two new superabsorbents through graft copolymerization onto hydroxyethyl cellulose (HEC) in the presence of acrylic acid (AA). In synthesis of superabsorbents factors such as the highest water absorbency capacity, absorbency rate, gel strength, and environmental problems should be resolved or improved. The results demonstrated that the water absorbency capacity and rate parameters (τ) of HEC-g-p(AA-co-APOB) and HEC-g-p(AA-co-AHOB) in distilled water were 986.62, 664.38 g/g, and 98.04, 140.84 min, respectively. The biodegradability of HEC-g-p(AA-co-APOB) was approximately 4 times more than HEC-g-p(AA-co-AHOB). However, based on the rheological analyses (G'/G″) HEC-g-p(AA-co-AHOB) was stronger than the other. Additionally, studies of water retention on soil containing HEC-g-p(AA-co-AHOB) superabsorbent (soil with 0.25 wt% material) showed that the after 30 days has ≤5 % water while soil in the absence of superabsorbent after 10 days completely dried. Studies of the growth of plants in soil demonstrated in the presence of HEC-g-p(AA-co-AHOB) the average length of shoots was 36 cm while without superabsorbent were 25 cm.
Collapse
Affiliation(s)
| | - Abbas Rahmati
- Department of Chemistry, University of Isfahan, Isfahan 81746-73441, Iran.
| |
Collapse
|
2
|
Hsu TY, Yang KM, Chiang YC, Lin LY, Chiang PY. The Browning Properties, Antioxidant Activity, and α-Glucosidase Inhibitory Improvement of Aged Oranges ( Citrus sinensis). Foods 2024; 13:1093. [PMID: 38611397 PMCID: PMC11011325 DOI: 10.3390/foods13071093] [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: 03/18/2024] [Revised: 03/29/2024] [Accepted: 03/30/2024] [Indexed: 04/14/2024] Open
Abstract
Oranges contain many natural active chemicals, organic acids, and polysaccharides. Aging processing is commonly used to modify the color, quality, functional components, and stability of fruits. This study assesses the preparation of aging black oranges using various pre-treatments and solid fermentation. Oranges were aged for six weeks in fresh, non-blanching, blanching, and hot air-assisted aging cycle (AA) groups. The oranges' shrinkage ratio, color difference values, and soluble solids content changed significantly (p < 0.05). Principal component analysis indicated that aging fermentation treatment accelerated glycolysis and increased the ratio of reducing sugars. The enhanced browning can be associated with the oxidation of ascorbic acid (0.66-0.47 mg/g) and the formation of 5-hydroxymethylfurfural (5-HMF) (0.09 mg/g). Furthermore, the presence of free polyphenols led to an increase in the total polyphenol and total flavonoid content. It also had a synergistic effect with 5-HMF in increasing the 2,2-diphenyl-1-picrylhydrazyl free radical-scavenging capacity and ferric ion-reducing antioxidant power (p < 0.05). AA had superior α-glucosidase inhibitory ability increasing from 67.31 to 80.48%. It also reduced the development time by 33%. Therefore, aging technology can enhance the bioactive compounds in oranges and provide a reference for future whole-fruit aging fermentation and health product creation.
Collapse
Affiliation(s)
- Ting-Yu Hsu
- Department of Food Science and Biotechnology, National Chung Hsing University, 145 Xingda Road, South Dist., Taichung City 40227, Taiwan; (T.-Y.H.); (Y.-C.C.)
| | - Kai-Min Yang
- Department of Food Science, National Quemoy University, 1 University Rd., Jinning Township, Kinmen County 89250, Taiwan;
| | - Yi-Chan Chiang
- Department of Food Science and Biotechnology, National Chung Hsing University, 145 Xingda Road, South Dist., Taichung City 40227, Taiwan; (T.-Y.H.); (Y.-C.C.)
| | - Li-Yun Lin
- Department of Food Science and Technology, Hungkuang University, No. 1018, Sec. 6, Taiwan Blvd., Shalu Dist., Taichung City 43302, Taiwan;
| | - Po-Yuan Chiang
- Department of Food Science and Biotechnology, National Chung Hsing University, 145 Xingda Road, South Dist., Taichung City 40227, Taiwan; (T.-Y.H.); (Y.-C.C.)
| |
Collapse
|
3
|
Yang Y, Wang R, Ai X, Liu D, Niu C, Li T. Significant enhancement in antioxidant and antimicrobial activity of tragacanth gum through chemical modification using amino acids. Int J Biol Macromol 2024; 257:128343. [PMID: 38007020 DOI: 10.1016/j.ijbiomac.2023.128343] [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: 09/05/2023] [Revised: 10/24/2023] [Accepted: 11/20/2023] [Indexed: 11/27/2023]
Abstract
Herein, glutamic acid, lysine, arginine and glycine grafted tragacanth gum (TG) were synthesized and designated as TG-Glu, TG-Lys, TG-Arg, and TG-Gly, respectively. The corresponding degrees of substitution (DS) were 0.212, 0.255, 0.394, and 0.169. Thermal, antioxidant, and antibacterial properties of synthesized amino acid-grafted tragacanth gum (ATG) were investigated. The results suggested that the grafting of amino acids onto TG has the potential to alter its thermal properties. When compared with TG and amino acid alone, ATG exhibited significantly enhanced antioxidant and antibacterial properties, with these properties being concentration-dependent. At a concentration of 2 mg/mL for TG-Glu and 3 mg/mL for TG-Arg, TG-Gly, and TG-Lys, the scavenging rate for 2,2'-hypoazido-3-ethylbenzothiazoline sulfonate (ABTS) radical reached 100 %. On the other hand, the scavenging rate of TG-Glu for hydroxyl radical achieved 100 % even at a concentration as low as 1 mg/mL. These properties were accompanied by an increase in reducing force and a notable improvement in the ability to scavenge superoxide anion (O2-). Moreover, the combination of amino acids and TG represents a promising approach to enhance the antimicrobial activities of TG, with the bacteriostatic rate reaching 100 %. Consequently, ATG shows promise as a novel agent for both antioxidation and antimicrobial applications.
Collapse
Affiliation(s)
- Yuxuan Yang
- Hebei Key Laboratory of Flexible Functional Materials, School of Materials Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050000, China
| | - Ruolin Wang
- Hebei Key Laboratory of Flexible Functional Materials, School of Materials Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050000, China
| | - Xiaopei Ai
- Hebei Key Laboratory of Flexible Functional Materials, School of Materials Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050000, China
| | - Dan Liu
- Hebei Key Laboratory of Flexible Functional Materials, School of Materials Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050000, China
| | - Chunmei Niu
- Hebei Key Laboratory of Flexible Functional Materials, School of Materials Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050000, China.
| | - Tiantian Li
- Hebei Key Laboratory of Flexible Functional Materials, School of Materials Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050000, China.
| |
Collapse
|
4
|
El Idrissi A, Channab BE, Essamlali Y, Zahouily M. Superabsorbent hydrogels based on natural polysaccharides: Classification, synthesis, physicochemical properties, and agronomic efficacy under abiotic stress conditions: A review. Int J Biol Macromol 2024; 258:128909. [PMID: 38141703 DOI: 10.1016/j.ijbiomac.2023.128909] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 11/22/2023] [Accepted: 12/18/2023] [Indexed: 12/25/2023]
Abstract
Superabsorbent polymers (SAPs) are a class of polymers that have attracted tremendous interest due to their multifunctional properties and wide range of applications. The importance of this class of polymers is highlighted by the large number of publications, including articles and patents, dealing with the use of SAPs for various applications. Within this framework, this review provides an overview of SAPs and highlights various key aspects, such as their history, classification, and preparation methods, including those related to chemically or physically cross-linked networks, as well as key factors affecting their performance in terms of water absorption and storage. This review also examines the potential use of polysaccharides-based SAPs in agriculture as soil conditioners or slow-release fertilizers. The basic aspects of SAPs, and methods of chemical modification of polysaccharides are presented and guidelines for the preparation of hydrogels are given. The water retention and swelling mechanisms are discussed in light of some mathematical empirical models. The nutrient slow-release kinetics of nutrient-rich SAPs are also examined on the basic of commonly used mathematical models. Some examples illustrating the advantages of using SAPs in agriculture as soil conditioners and agrochemical carriers to improve crop growth and productivity are presented and discussed. This review also attempts to provide an overview of the role of SAPs in mitigating the adverse effects of various abiotic stresses, such as heavy metals, salinity, and drought, and outlines future trends and prospects.
Collapse
Affiliation(s)
- Ayoub El Idrissi
- Laboratory of Materials, Catalysis & Natural Resources Valorization, URAC 24, Faculty of Science and Technology, Hassan II Casablanca University, Morocco; MAScIR Foundation, VARENA Center, Mohammed VI Polytechnic University, Ben Guerir, Morocco
| | - Badr-Eddine Channab
- Laboratory of Materials, Catalysis & Natural Resources Valorization, URAC 24, Faculty of Science and Technology, Hassan II Casablanca University, Morocco
| | - Younes Essamlali
- MAScIR Foundation, VARENA Center, Mohammed VI Polytechnic University, Ben Guerir, Morocco.
| | - Mohamed Zahouily
- Laboratory of Materials, Catalysis & Natural Resources Valorization, URAC 24, Faculty of Science and Technology, Hassan II Casablanca University, Morocco; MAScIR Foundation, VARENA Center, Mohammed VI Polytechnic University, Ben Guerir, Morocco.
| |
Collapse
|
5
|
Dumkor T, Poompradub S. Microcrystalline cellulose from Para rubber leaves as an additive for superabsorbent polymers. Int J Biol Macromol 2023; 233:123556. [PMID: 36746303 DOI: 10.1016/j.ijbiomac.2023.123556] [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: 09/19/2022] [Revised: 01/18/2023] [Accepted: 02/01/2023] [Indexed: 02/08/2023]
Abstract
This study prepared microcrystalline cellulose (MCC) from the Para rubber leaves (RL) via mechanical and chemical treatments in order to reduce the amount of waste RL by making it a value added product. The obtained MCC had a cellulose content of 61 % with a high crystallinity index of 67.35 %. The MCC-graft-polyacrylate (MCC-g-PA) was then prepared using N,N'-methylenebisacrylamide (MBA) at 0.05 wt% of acrylic acid via radical polymerization, and was then used as an additive in PA superabsorbent polymers (SAP). The presence of 0.05 g MCC-g-PA in PA (0.1 g) was found to exhibit a 1.17-fold greater water absorbency than the neat PA SAP, which was due to the increased level of hydroxyl and carboxylate groups from the added MCC-g-PA. The MCC-g-PA/PA SAP exhibited a similar reusability to the commercial SAP and could be degraded via cellulase and laccase enzymes.
Collapse
Affiliation(s)
- Tipapan Dumkor
- Program in Petrochemistry and Polymer Science, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Sirilux Poompradub
- Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand; Center of Excellence in Green Materials for Industrial Application, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand; Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok 10330, Thailand.
| |
Collapse
|
6
|
Kwon YR, Kim HC, Kim JS, Chang YW, Kim DH. Surface-crosslinking of itaconic acid-based superabsorbent polymer using a novel bio-based surface-crosslinker based on succinic acid. POLYM-PLAST TECH MAT 2023. [DOI: 10.1080/25740881.2023.2189450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Affiliation(s)
- Yong Rok Kwon
- Materials & Component Convergence R&D Department, Korea Institute of Industrial Technology (KITECH), Ansan-si, Gyeonggi-do, Republic of Korea
- Department of Material Chemical Engineering, Hanyang University, Ansan-si, Gyeonggi-do, Republic of Korea
| | - Hae Chan Kim
- Materials & Component Convergence R&D Department, Korea Institute of Industrial Technology (KITECH), Ansan-si, Gyeonggi-do, Republic of Korea
- Department of Material Chemical Engineering, Hanyang University, Ansan-si, Gyeonggi-do, Republic of Korea
| | - Jung Soo Kim
- Materials & Component Convergence R&D Department, Korea Institute of Industrial Technology (KITECH), Ansan-si, Gyeonggi-do, Republic of Korea
| | - Young-Wook Chang
- Department of Material Chemical Engineering, Hanyang University, Ansan-si, Gyeonggi-do, Republic of Korea
| | - Dong Hyun Kim
- Materials & Component Convergence R&D Department, Korea Institute of Industrial Technology (KITECH), Ansan-si, Gyeonggi-do, Republic of Korea
| |
Collapse
|
7
|
Alfuhaid L, Al-Abbad E, Alshammari S, Alotaibi A, Malek N, Al-Ghamdi A. Preparation and Characterization of a Renewable Starch-g-(MA-DETA) Copolymer and Its Adjustment for Dye Removal Applications. Polymers (Basel) 2023; 15:polym15051197. [PMID: 36904438 PMCID: PMC10007688 DOI: 10.3390/polym15051197] [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: 12/26/2022] [Revised: 02/14/2023] [Accepted: 02/17/2023] [Indexed: 03/08/2023] Open
Abstract
Maleic anhydride-diethylenetriamine grafted on starch (st-g-(MA-DETA)) was synthesized through graft copolymerization, and the different parameters (copolymerization temperature, reaction time, concentration of initiator and monomer concentration) affecting starch graft percentage were studied to achieve the maximum grafting percentage. The maximum grafting percentage was found to be 29.17%. The starch and grafted starch copolymer were characterized using XRD, FTIR, SEM, EDS, NMR, and TGA analytical techniques to describe copolymerization. The crystallinity of starch and grafted starch was studied by XRD, confirming that grafted starch has a semicrystalline nature and indicating that the grafting reaction took place typically in the amorphous region of starch. NMR and IR spectroscopic techniques confirmed the successful synthesis of the st-g-(MA-DETA) copolymer. A TGA study revealed that grafting affects the thermal stability of starch. An SEM analysis showed the microparticles are distributed unevenly. Modified starch with the highest grafting ratio was then applied to celestine dye removal from water using different parameters. The experimental results indicated that St-g-(MA-DETA) has excellent dye removal properties in comparison to native starch.
Collapse
Affiliation(s)
- Lolwah Alfuhaid
- Department of Chemistry, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
| | - Eman Al-Abbad
- Department of Chemistry, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
- Basic & Applied Scientific Research Center (BASRC), Renewable Energy Unit, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
| | - Shouq Alshammari
- Department of Chemistry, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
| | - Aljawharah Alotaibi
- Department of Chemistry, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
| | - Naved Malek
- Ionic Liquids Research Laboratory, Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat 395007, India
| | - Azza Al-Ghamdi
- Department of Chemistry, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
- Basic & Applied Scientific Research Center (BASRC), Renewable Energy Unit, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
- Correspondence:
| |
Collapse
|
8
|
Barreto JVM, de Albuquerque AKC, Jacques NG, Wellen RMR. On the curing and degradation of bisphenol A diglycidyl ether and epoxidized soybean oil compounds cured with itaconic and succinic acids. J Appl Polym Sci 2023. [DOI: 10.1002/app.53696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
| | | | | | - Renate Maria Ramos Wellen
- Materials Engineering Department Federal University of Paraiba João Pessoa Brazil
- Academic Unit of Materials Engineering Federal University of Campina Grande Campina Grande Brazil
| |
Collapse
|
9
|
Hocine S, Ghemati D, Aliouche D. Synthesis, characterization and swelling behavior of pH-sensitive polyvinylalcohol grafted poly(acrylic acid-co-2-acrylamido-2-methylpropane sulfonic acid) hydrogels for protein delivery. Polym Bull (Berl) 2023. [DOI: 10.1007/s00289-022-04664-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
10
|
Helal AA, Breky MM, Allan KF, Attallah MF. Removal of Eu3+ from simulated aqueous solutions by synthesis of a new composite adsorbent material. Appl Radiat Isot 2022; 191:110543. [DOI: 10.1016/j.apradiso.2022.110543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 10/20/2022] [Accepted: 10/27/2022] [Indexed: 11/02/2022]
|
11
|
Liu Y, Zhu Y, Wang Y, Mu B, Wang X, Wang A. Eco-friendly superabsorbent composites based on calcined semicoke and polydimethylourea phosphate: Synthesis, swelling behavior, degradability and their impact on cabbage growth. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
12
|
Ataie M, Sutherland K, Pakzad L, Fatehi P. Assembly of aluminum oxide particles with lignin-acrylic acid polymer in saline systems. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129322] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
13
|
Graphene oxide incorporated chitosan/acrylamide/itaconic acid semi-interpenetrating network hydrogel bio-adsorbents for highly efficient and selective removal of cationic dyes. Int J Biol Macromol 2022; 219:273-289. [PMID: 35932804 DOI: 10.1016/j.ijbiomac.2022.07.238] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 07/19/2022] [Accepted: 07/30/2022] [Indexed: 11/22/2022]
Abstract
In recent years, polymeric bio-adsorbents offers high removal efficiency, superior adsorption capacity and selectivity against various pollutants in aqueous medium. While designing these adsorbents, their environmental friendliness, sustainability, renewability, easy accessibility, and cost-effectiveness should be considered. In this study, GO incorporated semi-interpenetrating network (semi-IPN) nanocomposite hydrogels (CS/AAm/IA/GO) were obtained by free radical copolymerization of acrylamide (AAm) and itaconic acid (IA) in the presence of chitosan (CS) as an environmentally friendly bio-adsorbent. GO significantly improved the thermal stability, compressive strength, and percentage swelling of the hydrogel. The selective adsorption studies demonstrated that methylene blue (MB) was the most efficiently removed dye from both individual and mixed dye systems with 99.8 % removal efficiency. The adsorption capacity was found to be 247.47 mg g-1 using 0.025 g hydrogel adsorbent containing 0.5 wt% of GO and an initial MB concentration of 5 mg L-1 at pH 8 over 90 min at room temperature. The kinetic and isotherm studies revealed that the adsorption process followed the pseudo-second-order kinetic model and Langmuir adsorption isotherm. Thermodynamic studies suggested the spontaneous and endothermic nature of MB adsorption. Also, the MB removal efficiency above 96 % was obtained after 7 consecutive adsorption-desorption cycles while maintaining the structural stability of the bio-adsorbent.
Collapse
|
14
|
Lemma E, Kiflie Z, Kassahun SK. Adsorption of Cr (VI) ion from aqueous solution on acrylamide – grafted starch (Coccinia abyssinicca) – PVA/PVP/chitosan/graphene oxide blended hydrogel: isotherms, kinetics, and thermodynamics studies. SEP SCI TECHNOL 2022. [DOI: 10.1080/01496395.2022.2106441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Endalu Lemma
- School of Chemical and Bio-Engineering, Environmental Engineering Chair, Addis Ababa Institute of Technology, Addis Ababa University, Addis Ababa, Ethiopia
| | - Zebene Kiflie
- School of Chemical and Bio-Engineering, Environmental Engineering Chair, Addis Ababa Institute of Technology, Addis Ababa University, Addis Ababa, Ethiopia
| | - Shimelis Kebede Kassahun
- School of Chemical and Bio-Engineering, Environmental Engineering Chair, Addis Ababa Institute of Technology, Addis Ababa University, Addis Ababa, Ethiopia
| |
Collapse
|
15
|
Synthesis, optimization, characterization, and potential drug release application of nanocomposite hydrogel based on carboxymethyl cellulose-g-itaconic acid/acrylamide. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03127-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
16
|
Xu J, Kim KO, Yoon KJ. Effect of Cross-Linker Length on the Absorption Characteristics of the Sodium Salt of Cross-Linked Polyaspartic Acid. Polymers (Basel) 2022; 14:polym14112244. [PMID: 35683915 PMCID: PMC9182766 DOI: 10.3390/polym14112244] [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: 04/05/2022] [Revised: 05/06/2022] [Accepted: 05/14/2022] [Indexed: 12/10/2022] Open
Abstract
For the development of biodegradable superabsorbent polymers, the effect of the cross-linking length on the absorption characteristics of the Na salt of polyaspartic acid (PAspNa) was demonstrated using different concentrations of diamine cross-linking agents bearing carbon chains of different lengths, viz., ethylenediamine, 1,6-hexamethylenediamine, 1,8-diaminooctane, 1,10-diaminodecane, and 1,12-diaminododecane were used as cross-linking agents. The absorption of PAspNa was measured in deionised water and in a 0.9% aqueous NaCl solution. Under the conditions tested, when the alkyl chain of PAspNa was too short or too long, the absorbency was low and the cross-linking length was optimum. The success of the cross-linking reaction was confirmed by FT-IR spectroscopy. The degree of cross-linking was estimated and the ideal concentration for maximum water absorption was determined by elemental analysis. The sample obtained by cross-linking 1,8-diaminooctane at a concentration of 0.11 g/g polysuccinimide (PSI) showed the highest absorption. The thermal properties of each material were determined by dynamic scanning calorimetry. Therefore, the length of the cross-linking agent was found to strongly influence water absorption.
Collapse
Affiliation(s)
- Junchao Xu
- Jiangsu New Vision Advanced Functional Fiber Innovation Center Co., Ltd., Suzhou 215000, China;
| | - Kyu Oh Kim
- Department of Fiber System Engineering, Dankook University, 152, Jookjeon-ro, Suji-gu, Yongin-si 16890, Korea;
| | - Kee Jong Yoon
- Department of Fiber System Engineering, Dankook University, 152, Jookjeon-ro, Suji-gu, Yongin-si 16890, Korea;
- Correspondence: ; Tel.: +82-31-8005-3561; Fax: +82-31-8005-3564
| |
Collapse
|
17
|
Green starch/graphene oxide hydrogel nanocomposites for sustained release applications. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02236-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
AbstractGreen nanocomposite hydrogels (ST-PHEMA/GO) comprised of starch and 2-Hydroxyethyl methacrylate (HEMA) reinforced with different ratios of graphene oxide (GO) were prepared via gamma radiation induced crosslinking polymerization. The chemical structure and morphology and the crystallinity were studied by FTIR FE-SEM, AFM, TEM and XRD, respectively. The swelling behavior of the claimed hydrogels was verified versus time and the pH-dependent swelling at three different irradiation dose:10, 20 and 30 kGy was also investigated. The results of the swelling study showed that the swelling capacity of the hydrogel networks varied with the changes of the pH of the solution, the GO content and the irradiation doses. Moreover, the swelling isotherm of all the prepared hydrogels followed a Fickian diffusion mechanism n < 0.5.
Graphical abstract
Collapse
|
18
|
Wu I, Park RJ, Ghosh R, Kuo MC, Seifert S, Coughlin EB, Herring AM. Enhancing desalination performance by manipulating block ratios in a polyethylene-based triblock copolymer anion exchange membrane for electrodialysis. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120295] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
19
|
Kim HC, Kwon YR, Kim JS, Kim JH, Kim DH. Novel itaconic acid-based superabsorbent polymer composites using oxidized starch. POLYM-PLAST TECH MAT 2022. [DOI: 10.1080/25740881.2021.1991948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Affiliation(s)
- Hae Chan Kim
- Department of Human Convergence Research Group, Korea Institute of Industrial Technology (Kitech), Ansan-si, Republic of Korea
- Department of Material Chemical Engineering, Hanyang University, Ansan-si, Republic of Korea
| | - Yong Rok Kwon
- Department of Human Convergence Research Group, Korea Institute of Industrial Technology (Kitech), Ansan-si, Republic of Korea
- Department of Material Chemical Engineering, Hanyang University, Ansan-si, Republic of Korea
| | - Jung Soo Kim
- Department of Human Convergence Research Group, Korea Institute of Industrial Technology (Kitech), Ansan-si, Republic of Korea
| | - Jong Ho Kim
- Department of Material Chemical Engineering, Hanyang University, Ansan-si, Republic of Korea
| | - Dong Hyun Kim
- Department of Human Convergence Research Group, Korea Institute of Industrial Technology (Kitech), Ansan-si, Republic of Korea
| |
Collapse
|
20
|
Xu X, Zhao C, Qian K, Sun M, Hao Y, Han L, Wang C, Ma C, White JC, Xing B. Physiological responses of pumpkin to zinc oxide quantum dots and nanoparticles. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 296:118723. [PMID: 34952181 DOI: 10.1016/j.envpol.2021.118723] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 11/23/2021] [Accepted: 12/20/2021] [Indexed: 06/14/2023]
Abstract
The present study investigated that the potential of soil or foliar applied 15 mg/L zinc oxide quantum dots (ZnO QD, 11.7 nm) to enhance pumpkin (Cucurbita moschata Duch.) growth and biomass in comparison with the equivalent concentrations of other sizes of ZnO particles, ZnO nanoparticles (ZnO NPs, 43.3 nm) and ZnO bulk particles (ZnO BPs, 496.7 nm). In addition, ZnSO4 was used to set a Zn2+ ionic control. For foliar exposure, ZnO QD increased dry mass by 56% relative to the controls and values were 17.3% greater than that of the ZnO NPs particles. The cumulative water loss in the ZnO QD treatment was 10% greater than with ZnO NPs, suggesting that QD could better enhance pumpkin growth. For the root exposure, biomass and accumulative water loss equivalent across all Zn treatments. No adverse effects in terms of pigment (chlorophyll and anthocyanin) contents were evident across all Zn types regardless exposure routes. Foliar exposure to ZnO QD caused 40% increases in shoot Zn content as compared to the control; the highest Zn content was evident in the Zn2+ ionic treatment, although this did not lead to growth enhancement. In addition, the shoot and root content of other macro- and micro-nutrients were largely equivalent across all the treatments. The contents of other nutritional compounds, including amino acids, total protein and sugar, were also significantly increased by foliar exposure of ZnO QD. The total protein in the ZnO QD was 53% higher than the ZnO particle treatments in the root exposure group. Taken together, our findings suggest that ZnO QDs have significant potential as a novel and sustainable nano-enabled agrichemical and strategies should be developed to optimize benefit conferred to amended crops.
Collapse
Affiliation(s)
- Xinxin Xu
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Chenchen Zhao
- College of Plant Protection, Southwest University, Chongqing, 400716, China
| | - Kun Qian
- College of Plant Protection, Southwest University, Chongqing, 400716, China
| | - Min Sun
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Yi Hao
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Lanfang Han
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Cuiping Wang
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
| | - Chuanxin Ma
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Jason C White
- The Connecticut Agricultural Experiment Station, New Haven, CT, 06504, USA
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, USA
| |
Collapse
|
21
|
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]
|
22
|
Liu Y, Zhu Y, Wang Y, Wang X, Zong L, Wang A. Semi-coke-enhanced eco-friendly superabsorbent composites for agricultural application. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04099-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
23
|
Elella MHA, Aamer N, Mohamed YMA, El Nazer HA, Mohamed RR. Innovation of high-performance adsorbent based on modified gelatin for wastewater treatment. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04079-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
24
|
Designing and application of reactive extrusion with twice initiations for graft copolymerization of acrylamide on starch. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111008] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
|
25
|
El-Aziz GHA, Ibrahim AS, Fahmy AH. Using Environmentally Friendly Hydrogels to Alleviate the Negative Impact of Drought on Plant. OPEN JOURNAL OF APPLIED SCIENCES 2022; 12:111-133. [DOI: 10.4236/ojapps.2022.121009] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
26
|
Gao L, Luo H, Wang Q, Hu G, Xiong Y. Synergistic Effect of Hydrogen Bonds and Chemical Bonds to Construct a Starch-Based Water-Absorbing/Retaining Hydrogel Composite Reinforced with Cellulose and Poly(ethylene glycol). ACS OMEGA 2021; 6:35039-35049. [PMID: 34963985 PMCID: PMC8697600 DOI: 10.1021/acsomega.1c05614] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 11/24/2021] [Indexed: 06/14/2023]
Abstract
The hydrogel prepared by graft copolymerization of starch (ST) and acrylamide (AM) is a commonly used absorbent material; however, due to their irregular network structure and a limited number of hydrophilic groups, starch-based hydrogels have poor water absorption and water retention. To overcome this, here, we provide a new preparation method for starch-based hydrogels. Using cerium ammonium nitrate (CAN) as an initiator, the starch-acrylamide-cellulose (CMC)/poly(ethylene glycol) (S-A-M/PEG) superabsorbent hydrogel was prepared by graft copolymerization. The starch-acrylamide-cellulose/poly(ethylene glycol) hydrogel network is constructed through the synergistic effect of hydrogen bonds and chemical bonds. The experimental results showed that the starch-acrylamide-cellulose/poly(ethylene glycol) superabsorbent hydrogel has a complete network structure that does not easily collapse due to its superior mechanical properties. The water swelling rate reached 80.24 times, and it reached 50.61% water retention after 16 days. This hydrogel has excellent water-absorbing and water-retaining properties, biocompatibility, and degradability, making it useful for further studies in medical, agricultural, and other fields.
Collapse
Affiliation(s)
- Longfei Gao
- Department of Polymer Materials
and Engineering, Guizhou University, Guiyang 550025, P. R. China
| | - Huiyuan Luo
- Department of Polymer Materials
and Engineering, Guizhou University, Guiyang 550025, P. R. China
| | - Qian Wang
- Department of Polymer Materials
and Engineering, Guizhou University, Guiyang 550025, P. R. China
| | - Guirong Hu
- Department of Polymer Materials
and Engineering, Guizhou University, Guiyang 550025, P. R. China
| | - Yuzhu Xiong
- Department of Polymer Materials
and Engineering, Guizhou University, Guiyang 550025, P. R. China
| |
Collapse
|
27
|
Davey S, Soares JBP. Amylopectin graft copolymers for oil sands tailings treatment. CAN J CHEM ENG 2021. [DOI: 10.1002/cjce.24290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Stepheney Davey
- Department of Chemical and Materials Engineering University of Alberta Edmonton Alberta Canada
| | - João B. P. Soares
- Department of Chemical and Materials Engineering University of Alberta Edmonton Alberta Canada
| |
Collapse
|
28
|
Synthesis and Heavy-Metal Sorption Studies of N, N-Dimethylacrylamide-Based Hydrogels. Polymers (Basel) 2021; 13:polym13183084. [PMID: 34577985 PMCID: PMC8473086 DOI: 10.3390/polym13183084] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 09/08/2021] [Accepted: 09/09/2021] [Indexed: 01/28/2023] Open
Abstract
In this work, a hydrogel system was produced via radical polymerization of N,N-dimethylacrylamide and 2-acrylamido-2-methylpropanesulfonic acid in the presence of N,N-methylene-bis-acrylamide as a crosslinker and ammonium persulfate as an initiator. Parameters that impact the conversion of copolymerization (such as initial concentration of monomers, temperature, initiator dose, and time) were studied. The swelling degree of the hydrogel was investigated with the addition of a crosslinker and initiator at different pH levels. A hydrogel with high conversion and high swelling degree was selected to investigate their ability for adsorption of Pb(II) ions from solutions. Adsorption behavior of Pb(II) ions in a hydrogel was examined as a function of reaction time and concentration of lead ions from a solution of Pb(II) ions.
Collapse
|
29
|
Kim H, Kim J, Kim D. Enhancement of Gel Strength of Itaconic Acid-Based Superabsorbent Polymer Composites Using Oxidized Starch. Polymers (Basel) 2021; 13:polym13172859. [PMID: 34502899 PMCID: PMC8433998 DOI: 10.3390/polym13172859] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/10/2021] [Accepted: 08/23/2021] [Indexed: 11/16/2022] Open
Abstract
Herein, core-superabsorbent polymer (CSAP) composites are prepared from oxidized starch (OS) via aqueous solution copolymerization using ammonium persulfate as the initiator, and 1,6-hexanediol diacrylate as the inner-crosslinker. The surface-crosslinking process is performed using various surface-crosslinkers, including bisphenol A diglycidyl ether (BADGE), poly(ethylene glycol) diglycidyl ether (PEGDGE), ethylene glycol diglycidyl ether (EGDGE), and diglycidyl ether (DGE). The structures of the CSAP composites and their surface-crosslinked SAPs (SSAPs) are characterized using Fourier transform infrared (FT-IR) spectroscopy, their absorption properties are measured via centrifuge retention capacity (CRC), absorbency under load (AUL), permeability, and re-swellability tests, and their gel strengths according to surface-crosslinker type and EGDGE content are examined via rheological analysis. The results indicate that an EGDGE content of 0.75 mol provides the optimum surface-crosslinking and SSAP performance, with a CRC of 34.8 g/g, an AUL of 27.2 g/g, and a permeability of 43 s. The surface-crosslinking of the CSAP composites using OS is shown to improve the gel strength, thus enabling the SAP to be used in disposable diapers.
Collapse
Affiliation(s)
- Haechan Kim
- Material & Component Convergence R&D Department, Korea Institute of Industrial Technology (KITECH), Ansan 15588, Korea; (H.K.); (J.K.)
- Department of Material Chemical Engineering, Hanyang University, Ansan 15588, Korea
| | - Jungsoo Kim
- Material & Component Convergence R&D Department, Korea Institute of Industrial Technology (KITECH), Ansan 15588, Korea; (H.K.); (J.K.)
| | - Donghyun Kim
- Material & Component Convergence R&D Department, Korea Institute of Industrial Technology (KITECH), Ansan 15588, Korea; (H.K.); (J.K.)
- Correspondence: ; Tel.: +82-31-8040-6226
| |
Collapse
|
30
|
Synthesis of cassava starch-g-acrylic acid/dimethylaminopropyl methacrylamide: A new hydrogel for brine solution. Carbohydr Polym 2021; 266:118109. [PMID: 34044927 DOI: 10.1016/j.carbpol.2021.118109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 04/19/2021] [Accepted: 04/21/2021] [Indexed: 11/20/2022]
Abstract
A new hydrogel copolymer was synthesized via the graft copolymerization of acrylic acid (AA) and dimethylaminopropyl methacrylamide (DMAPMA) on cassava starch (CSt) in aqueous solution. FTIR, TGA-FTIR, solid-state 13C NMR, SEM analyses were used to characterize the polymer. The swelling behavior of the polymer was investigated in distilled water and in various brine solutions. The effects of CSt and the ratio of the two monomers on the water absorbency of the polymer was evaluated. CSt improved the polymer swelling properties. Both polyelectrolyte and anti-polyelectrolyte effects occurred and the polymer had good salt-resistance properties in brine solutions. Such polymers have potential applications in the absorption of ultra-high concentration brine solutions.
Collapse
|
31
|
Chen Z, Zhang X, Liang J, Ji Y, Zhou Y, Fang H. Preparation of Silk Fibroin/Carboxymethyl Chitosan Hydrogel under Low Voltage as a Wound Dressing. Int J Mol Sci 2021; 22:ijms22147610. [PMID: 34299229 PMCID: PMC8307387 DOI: 10.3390/ijms22147610] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 07/07/2021] [Accepted: 07/13/2021] [Indexed: 11/25/2022] Open
Abstract
At present, silk fibroin (SF) hydrogel can be prepared by means of electrodeposition at 25 V in direct current (DC) mode. Reducing the applied voltage would provide benefits, including lower fabrication costs, less risk of high voltage shocks, and better stability of devices. Here, a simple but uncommon strategy for SF-based hydrogel preparation using 4 V in DC mode is discussed. SF was mixed and cross-linked with carboxymethyl chitosan (CMCS) through hydrogen bonding, then co-deposited on the graphite electrode. The thickness, mass, and shape of the SF/CMCS hydrogel were easily controlled by adjusting the electrodeposition parameters. Morphological characterization of the prepared hydrogel via SEM revealed a porous network within the fabricated hydrogel. This structure was due to intermolecular hydrogen bonding between SF and CMCS, according to the results of thermogravimetric analysis and rheological measurements. As a potential wound dressing, SF/CMCS hydrogel maintained a suitable moisture environment for wound healing and demonstrated distinct properties in terms of promoting the proliferation of HEK-293 cells and antibacterial activity against Escherichia coli and Staphylococcus aureus. Furthermore, histological studies were conducted on a full-thickness skin wound in rats covered with the SF/CMCS hydrogel, with results indicating that this hydrogel can promote wound re-epithelization and enhance granulation tissue formation. These results illustrate the feasibility of using the developed strategy for SF-based hydrogel fabrication in practice for wound dressing.
Collapse
|
32
|
Ajaz N, Khan IU, Asghar S, Khalid SH, Irfan M, Asif M, Chatha SAS. Assessing the pH responsive and mucoadhesive behavior of dexamethasone sodium phosphate loaded itaconic acid-grafted-poly(acrylamide)/carbopol semi-interpenetrating networks. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02643-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
33
|
Kalendova P, Svoboda L, Hroch J, Honcova P, Drobna H, Slang S. Hydrogels Based on Starch from Various Natural Sources: Synthesis and Characterization. STARCH-STARKE 2021. [DOI: 10.1002/star.202100051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Petra Kalendova
- Faculty of Chemical Technology University of Pardubice Department of Inorganic Technology Doubravice 41 Pardubice 53210 Czech Republic
| | - Ladislav Svoboda
- Faculty of Chemical Technology University of Pardubice Department of Inorganic Technology Doubravice 41 Pardubice 53210 Czech Republic
| | - Jan Hroch
- Faculty of Chemical Technology University of Pardubice Department of Inorganic Technology Doubravice 41 Pardubice 53210 Czech Republic
| | - Pavla Honcova
- Faculty of Chemical Technology University of Pardubice Department of Inorganic Technology Doubravice 41 Pardubice 53210 Czech Republic
| | - Helena Drobna
- Faculty of Chemical Technology University of Pardubice Department of Physical Chemistry Studentska 573 Pardubice 53210 Czech Republic
| | - Stanislav Slang
- Faculty of Chemical Technology University of Pardubice Center of Materials and Nanotechnologies Nam Cs. Legii 565 Pardubice 53002 Czech Republic
| |
Collapse
|
34
|
Rehman F, Khan IU, Khalid SH, Asghar S, Irfan M, Khalid I, Rasul A, Mahmood H, Yousaf AM, Shahzad Y, Mudassar M, Mohsin NUA. Optimization, in vitro release and toxicity evaluation of novel pH sensitive itaconic acid-g-poly(acrylamide)/sterculia gum semi-interpenetrating networks. Daru 2021; 29:171-184. [PMID: 33899162 PMCID: PMC8149496 DOI: 10.1007/s40199-021-00395-8] [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: 12/14/2020] [Accepted: 04/05/2021] [Indexed: 10/21/2022] Open
Abstract
BACKGROUND In recent era, pH sensitive polymeric carriers that combines the materials engineering and medicine is gaining researcher's attention as they maximizes drug concentration at site of absorption and reduces side effects for e.g. orally administered cetirizine HCl (CTZ HCl) upsets the stomach and furthermore shows high intestinal absorption. Thus, development of pH sensitive hydrogels with sufficient mechanical strength will be good candidate to address this issue. METHODS Here, we developed pH sensitive itaconic acid-g-poly(acrylamide)/sterculia gum (IA-g-poly(AM)/sterculia gum) semi-interpenetrating network (semi-IPN) by free radical polymerization technique for intestinal delivery of CTZ HCL. RESULTS Optimized formulation (I5) with 6% w/w IA showed negligible swelling at pH 1.2, and maximum swelling at pH 7.4. Solid state characterization of optimized formulation showed successful development of semi-IPN structure and incorporation of drug without any noticeable drug-carrier interaction. In vitro release study showed biphasic pH dependent release of CTZ HCl, where initial burst release was observed at acidic pH followed by sustained release at basic pH. Acute oral toxicity and histopathological studies confirmed the non-toxic nature of IA-g-poly(AM)/sterculia gum. CONCLUSION Conclusively, developed biocompatible semi-IPN hydrogels with sufficient pH sensitivity and mechanical strength could serve as a potential carrier for intestinal delivery of CTZ HCL to maximize its absorption and reduce side effects.
Collapse
Affiliation(s)
- Fauzia Rehman
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad, Pakistan
- School of Pharmacy, The University of Faisalabad, Faisalabad, Faisalabad, Pakistan
| | - Ikram Ullah Khan
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad, Pakistan.
| | - Syed Haroon Khalid
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Sajid Asghar
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Irfan
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Ikrima Khalid
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Akhtar Rasul
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Huma Mahmood
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Abid Mehmood Yousaf
- Department of Pharmacy, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
| | - Yasser Shahzad
- Department of Pharmacy, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
| | - Muhammad Mudassar
- Pathology Department, Batterjee Medical College, Jeddah, Saudi Arabia
| | - Noor Ul Amin Mohsin
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| |
Collapse
|
35
|
Starch-Based Super Water Absorbent: A Promising and Sustainable Way to Increase Survival Rate of Trees Planted in Arid Areas. Polymers (Basel) 2021; 13:polym13081314. [PMID: 33923654 PMCID: PMC8073703 DOI: 10.3390/polym13081314] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 04/01/2021] [Accepted: 04/14/2021] [Indexed: 12/11/2022] Open
Abstract
This research aimed to scale up the production of starch-based super water absorbent (SWA) and to validate the practical benefits of SWA for agricultural applications. SWA was successfully prepared in an up-scaling production by radiation-induced graft polymerization of acrylic acid onto cassava starch. Chemical characterization by FTIR and thermal characterization by TGA showed results that differentiated starting materials from the prepared SWA, thus confirming effective preparation of starch-based SWA via radiation-induced graft polymerization. SEM results visibly revealed a highly porous morphology of the synthesized SWA, substantiating its high swelling ability. Results from the field tests, performed for two seasons, revealed that the prepared SWA was able to increase the survival rate of young rubber trees planted in arid area by up to 40%, while simultaneously enhancing the growth characteristics of the young rubber trees.
Collapse
|
36
|
Kwon YR, Lim SH, Kim HC, Kim JS, Chang YW, Choi J, Kim DH. Superabsorbent polymer with improved permeability and absorption rate using hollow glass microspheres. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20200820] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yong Rok Kwon
- Department of Human Convergence Technology Group Korea Institute of Industrial Technology (KITECH) Ansansi Republic of Korea
- Department of Material Chemical Engineering Hanyang University Ansansi Republic of Korea
| | - Seung Ho Lim
- Department of Human Convergence Technology Group Korea Institute of Industrial Technology (KITECH) Ansansi Republic of Korea
- Department of Material Chemical Engineering Hanyang University Ansansi Republic of Korea
| | - Hae Chan Kim
- Department of Human Convergence Technology Group Korea Institute of Industrial Technology (KITECH) Ansansi Republic of Korea
| | - Jung Soo Kim
- Department of Human Convergence Technology Group Korea Institute of Industrial Technology (KITECH) Ansansi Republic of Korea
- Department of Packaging Yonsei University Wonju‐si Gangwon‐do Republic of Korea
| | - Young Wook Chang
- Department of Material Chemical Engineering Hanyang University Ansansi Republic of Korea
| | - Jun Choi
- Department of Human Convergence Technology Group Korea Institute of Industrial Technology (KITECH) Ansansi Republic of Korea
| | - Dong Hyun Kim
- Department of Human Convergence Technology Group Korea Institute of Industrial Technology (KITECH) Ansansi Republic of Korea
| |
Collapse
|
37
|
Kim JS, Kim DH, Lee YS. The Influence of Monomer Composition and Surface-CrossLinking Condition on Biodegradation and Gel Strength of Super Absorbent Polymer. Polymers (Basel) 2021; 13:polym13040663. [PMID: 33672256 PMCID: PMC7927004 DOI: 10.3390/polym13040663] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/11/2021] [Accepted: 02/16/2021] [Indexed: 11/28/2022] Open
Abstract
In this study, a superabsorbent polymer (SAP) comprising poly (IA-co-cellulose-co-VSA-co-AA; ICVA) core-SAP (CSAP) was synthesized through radical polymerization using itaconic acid (IA), acrylic acid (AA), cellulose, and vinyl sulfonic acid (VSA) as monomers. The absorption performances and relative biodegradability of various compositions prepared by adjusting the amounts of cellulose and VSA with constant IA and AA content were compared. Increasing the cellulose content in CSAP contributed to improved biodegradation of the surface-crosslinked SAP (SSAP) and gel strength, although the free absorbency (FA) and centrifuge retention capacity (CRC) decreased. Increasing the VSA content resulted in strong anionicity, which enables the absorption of large amounts of water. Surface-crosslinking technology was applied to the CSAP synthesized with the optimal composition ratio to increase its absorption performance and gel strength. Improved performance of the synthesized SSAP (a CRC of 30.4 g/g, absorbency under load (AUL) of 23.3 g/g, and permeability of 55 s) was achieved by selecting the optimal surface-crosslinking treatment time and the amount of distilled water in the surface-crosslinking solution: as the latter was increased in the surface-crosslinking solution, the AUL and permeability of the SSAP were improved, and its biodegradability was found to be 54% compared to the 100% biodegradable cellulose hydrogel in the control group.
Collapse
Affiliation(s)
- Jung Soo Kim
- Department of Packaging, Yonsei University, Wonju 26493, Korea;
- Human Convergence Technology R&D Departments, Korea Institute of Industrial Technology (KITECH), Ansan 15588, Korea;
| | - Dong Hyun Kim
- Human Convergence Technology R&D Departments, Korea Institute of Industrial Technology (KITECH), Ansan 15588, Korea;
| | - Youn Suk Lee
- Department of Packaging, Yonsei University, Wonju 26493, Korea;
- Correspondence: ; Tel.: +82-33-760-2395
| |
Collapse
|
38
|
Afacan C, Narain R, Soares JBP. Flocculating and dewatering of kaolin suspensions with different forms of poly(acrylamide‐co‐diallyl dimethylammonium chloride). CAN J CHEM ENG 2021. [DOI: 10.1002/cjce.23869] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Christopher Afacan
- Department of Chemical and Materials Engineering Donadeo Innovation Centre in Engineering Edmonton Alberta Canada
| | - Ravin Narain
- Department of Chemical and Materials Engineering Donadeo Innovation Centre in Engineering Edmonton Alberta Canada
| | - João B. P. Soares
- Department of Chemical and Materials Engineering Donadeo Innovation Centre in Engineering Edmonton Alberta Canada
| |
Collapse
|
39
|
Li X, Xiao N, Xiao G, Bai W, Zhang X, Zhao W. Lemon essential oil/vermiculite encapsulated in electrospun konjac glucomannan-grafted-poly (acrylic acid)/polyvinyl alcohol bacteriostatic pad: Sustained control release and its application in food preservation. Food Chem 2021; 348:129021. [PMID: 33545643 DOI: 10.1016/j.foodchem.2021.129021] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 12/20/2020] [Accepted: 01/02/2021] [Indexed: 10/22/2022]
Abstract
Lemon essential oils (LEO), as natural bacteriostatic agents, show significant loss in the preparation processes of food packaging materials, therefore, an effective encapsulation of LEO is urgent for realizing the protection. In this study, LEO was absorbed by thermally stable and porous vermiculite (VML) to form LEO/VML complex, which is further coupled with konjac glucomannan-grafted-poly (acrylic acid)/polyvinyl alcohol (KGM-g-PAA/PVA) composite. KGM-g-PAA/PVA bacteriostatic water-absorbing pad was prepared via electrospinning technique, which can minimize the loss of LEO. The VML (1 g) can significantly reduce LEO loss and achieve sustained control LEO release from the pad, which follows the predominant mechanism of Fick diffusion law. The sustained control LEO release from the pad can effectively inhibit the growth of E. coli during storage, thus prolonging shelf life of chilled pork for 3 day. This study suggests that KGM-g-PAA/PVA pad may have a great potential in the field of intelligent packaging.
Collapse
Affiliation(s)
- Xiangluan Li
- College of Light Industry and Food Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Naiyu Xiao
- College of Light Industry and Food Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China.
| | - Gengsheng Xiao
- College of Light Industry and Food Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Weidong Bai
- College of Light Industry and Food Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China.
| | - XueQin Zhang
- College of Light Industry and Food Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Wenhong Zhao
- College of Light Industry and Food Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| |
Collapse
|
40
|
Dispat N, Poompradub S, Kiatkamjornwong S. Synthesis of ZnO/SiO 2-modified starch-graft-polyacrylate superabsorbent polymer for agricultural application. Carbohydr Polym 2020; 249:116862. [PMID: 32933689 DOI: 10.1016/j.carbpol.2020.116862] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 07/29/2020] [Accepted: 07/29/2020] [Indexed: 11/17/2022]
Abstract
A bio-based superabsorbent polymer (SAP) for agricultural application was synthesized from modified starch (MS) to enhance its antibacterial property and biodegradability. The starch was modified by zinc oxide and tetraethyl orthosilicate via a sol-gel reaction under an acidic condition. Structural and morphological examinations were used to confirm the modification. The MS showed a good antibacterial activity against Staphylococcus aureus and Escherichia coli with 61.9 % and 99.9 % reduction in viable cells, respectively, after a 1 h exposure. The MS was then graft copolymerized with potassium acrylate monomer to synthesize a new MS-g-polyacrylate (PA) SAP. The grafting reaction was confirmed and the main factors for agricultural applications along with its biodegradation and antibacterial properties were achieved. The MS-g-PA SAP exhibited an excellent reusability and biodegradation. Importantly, the MS-g-PA SAP did not impose growth inhibition of mung bean (Vigna radiata), but provided some transient drought relief.
Collapse
Affiliation(s)
- Nonpan Dispat
- Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Sirilux Poompradub
- Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand; Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok 10330, Thailand; Green Materials for Industrial Application Research Unit, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
| | - Suda Kiatkamjornwong
- Office of Research Affairs, Chulalongkorn University, Bangkok 10330, Thailand; FRS (T), The Royal Society of Thailand, Sanam Suepa, Dusit, Bangkok 10300, Thailand
| |
Collapse
|
41
|
Mert H, Özkahraman B, Damar H. A novel wound dressing material: Pullulan grafted copolymer hydrogel via UV copolymerization and crosslinking. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101962] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
42
|
Preparation and characterization of superabsorbent polymers (SAPs) surface-crosslinked with polycations. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104774] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
43
|
Ahmed A, Mohamed F, Elzanaty AM, Abdel-Gawad OF. Synthesis and characterization of diphenylamine grafted onto sodium alginate for metal removal. Int J Biol Macromol 2020; 167:766-776. [PMID: 33249151 DOI: 10.1016/j.ijbiomac.2020.11.159] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 11/22/2020] [Accepted: 11/23/2020] [Indexed: 11/26/2022]
Abstract
A novel grafting polymer was synthesized via grafting of diphenylamine (DPA) onto sodium alginate (NaAlg) as a new adsorbent for Cobalt (Co2+) from aqueous solutions. Optimization of sodium alginate grafted by diphenylamine (NaAlg-g-DPA) was addressed in the current study by several parameters including; initiator and monomer concentrations, contact time of polymerization, as well as polymerization temperature. In addition, the structural and chemical characteristics of NaAlg-g-DPA were explored using different modalities later. The results showed that sodium alginate grafted by diphenylamine (NaAlg-g-DPA) is suitable for adsorbent to removal Co2+ ion. The parameters for the adsorption of Co(II) ions by NaAlg-g-DPA were also determined. It was shown that the samples of NaAlg-g-DPA had given good correlation with Temkins isotherm model and their kinetics followed pseudo-second-order model. It was also observed that the adsorption capacity seemed to be dependent on pH value in solution which showed better results at basic pH. The findings from this research show that NaAlg-g-DPA has capability to remove Co (II) from aqueous solutions.
Collapse
Affiliation(s)
- Asmaa Ahmed
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Fatma Mohamed
- Nanophotonics and Applications (NPA) Lab, Polymer Research Laboratory, Beni-Suef University, Beni-Suef 62514, Egypt; Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Ali M Elzanaty
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Omayma F Abdel-Gawad
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt.
| |
Collapse
|
44
|
Kwon YR, Hong SJ, Lim SH, Kim JS, Chang YW, Choi J, Kim DH. Ionic-bonded superabsorbent polymers and their surface-crosslinking using modified silica. POLYM-PLAST TECH MAT 2020. [DOI: 10.1080/25740881.2020.1836213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Yong Rok Kwon
- Department of Human Convergence Technology Group, Korea Institute of Industrial Technology (KITECH), Ansan-si, Republic of Korea
- Department of Material Chemical Engineering, Hanyang University, Ansan-si, Republic of Korea
| | - Seok Ju Hong
- Department of Human Convergence Technology Group, Korea Institute of Industrial Technology (KITECH), Ansan-si, Republic of Korea
- Department of Material Chemical Engineering, Hanyang University, Ansan-si, Republic of Korea
| | - Seung Ho Lim
- Department of Human Convergence Technology Group, Korea Institute of Industrial Technology (KITECH), Ansan-si, Republic of Korea
- Department of Material Chemical Engineering, Hanyang University, Ansan-si, Republic of Korea
| | - Jung Soo Kim
- Department of Human Convergence Technology Group, Korea Institute of Industrial Technology (KITECH), Ansan-si, Republic of Korea
- Department of Packaging, Yonsei University, Wonju-si, Republic of Korea
| | - Young Wook Chang
- Department of Material Chemical Engineering, Hanyang University, Ansan-si, Republic of Korea
| | - Jun Choi
- Department of Human Convergence Technology Group, Korea Institute of Industrial Technology (KITECH), Ansan-si, Republic of Korea
| | - Dong Hyun Kim
- Department of Human Convergence Technology Group, Korea Institute of Industrial Technology (KITECH), Ansan-si, Republic of Korea
| |
Collapse
|
45
|
Ghobashy MM, Abd El-Wahab H, Ismail MA, Naser A, Abdelhai F, El-Damhougy BK, Nady N, Meganid AS, Alkhursani SA. Characterization of Starch-based three components of gamma-ray cross-linked hydrogels to be used as a soil conditioner. MATERIALS SCIENCE AND ENGINEERING: B 2020; 260:114645. [DOI: 10.1016/j.mseb.2020.114645] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
46
|
Pathania D, Sood S, Saini AK, Kumari S, Agarwal S, Gupta VK. Studies on anticancerious and photocatalytic activity of carboxymethyl cellulose-cl-poly(lactic acid-co-itaconic acid)/ZnO-Ag nanocomposite. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.07.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
47
|
Khalilzadeh MA, Hosseini S, Rad AS, Venditti RA. Synthesis of Grafted Nanofibrillated Cellulose-Based Hydrogel and Study of Its Thermodynamic, Kinetic, and Electronic Properties. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:8710-8719. [PMID: 32633505 DOI: 10.1021/acs.jafc.0c03500] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Hydrogels were synthesized by a copolymerization reaction of nanofibrillated cellulose (CNF) with acrylic acid (AA) and acrylamide (AM) and N,N-methylene-bis-acrylamide (MBA) as a cross-linker and their absorption performance as a function of composition was determined. Hydrogels with 4% by weight CNF had swelling of about 250 g/g and with 7% CNF about 200 g/g for water. Thermodynamic and kinetic studies of the reaction pathways and the electronic properties of the cellulose and monomers were investigated through density functional theory calculations. Thermodynamic investigations revealed that the radical formation of cellulose that initiates the hydrogel process can occur through the breaking of the homolytic covalent bonds C6-OH and C3-OH. The results show that the reaction of CNF with monomers is thermodynamically favorable in the decreasing order of AM, AA, and MBA. The kinetic study also indicates that the reaction kinetics of CNF with AM is faster than with AA which is much faster than with MBA. Overall, this study has elucidated some of the key chemical characteristics that impact the derivatization of nanocellulose structures to produce advanced renewable bioproducts.
Collapse
Affiliation(s)
- Mohammad A Khalilzadeh
- Department of Forest Biomaterials, College of Natural Resources, North Carolina State University, Raleigh 27695-8005, North Carolina, United States
- Department of Chemistry, Qaemshahr Branch, Islamic Azad University, Qaemshahr 47651-61964, Iran
| | - Shahrbano Hosseini
- Department of Chemistry, Qaemshahr Branch, Islamic Azad University, Qaemshahr 47651-61964, Iran
| | - Ali Shokuhi Rad
- Department of Chemical Engineering, Qaemshahr Branch, Islamic Azad University, Qaemshahr 47651-61964, Iran
| | - Richard A Venditti
- Department of Forest Biomaterials, College of Natural Resources, North Carolina State University, Raleigh 27695-8005, North Carolina, United States
| |
Collapse
|
48
|
Czarnecka E, Nowaczyk J. Semi-Natural Superabsorbents Based on Starch-g-poly(acrylic acid): Modification, Synthesis and Application. Polymers (Basel) 2020; 12:polym12081794. [PMID: 32785178 PMCID: PMC7464871 DOI: 10.3390/polym12081794] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 08/06/2020] [Accepted: 08/09/2020] [Indexed: 11/28/2022] Open
Abstract
Biopolymer-based superabsorbent polymers (SAPs) are being synthesized and investigated as a biodegradable alternative for an entirely synthetic SAPs, particularly those based on acrylic acid and its derivatives. This article focuses on the chemical modification of starch (S), and synthesis of new potentially biodegradable polymers using acrylic acid (AA) as side chain monomer and crosslinking mediator together with N,N’-methylenebisacrylamide (MBA). The graft co-polymerization was initiated by ceric ammonium nitrate (CAN) or potassium persulfate (KPS), leading to different reaction mechanisms. For each of the initiators, three different synthetic routes were applied. The structures of new bio-based SAPs were characterized by means of IR spectroscopy. Thermogravimetric measurements were made to test the thermal stability, and morphology of the samples were examined using scanning electron microscopy (SEM). Physico-chemical measurements were performed to characterize properties of new materials such as swelling characteristics. The water absorption capacity of resulting hydrogels was measured in distilled water and 0.9% NaCl solution.
Collapse
Affiliation(s)
- Elżbieta Czarnecka
- Chair of Physical Chemistry and Physicochemistry of Polymers, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 7 Gagarina street, 87-100 Toruń, Poland;
- Plastica Sp. z o.o., Frydrychowo 55, 87-410 Kowalewo Pomorskie, Poland
- Correspondence:
| | - Jacek Nowaczyk
- Chair of Physical Chemistry and Physicochemistry of Polymers, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 7 Gagarina street, 87-100 Toruń, Poland;
| |
Collapse
|
49
|
Soto D, León O, Urdaneta J, Muñoz-Bonilla A, Fernández-García M. Modified Starch as a Filter Controller in Water-Based Drilling Fluids. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E2794. [PMID: 32575779 PMCID: PMC7345978 DOI: 10.3390/ma13122794] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/15/2020] [Accepted: 06/18/2020] [Indexed: 11/17/2022]
Abstract
Herein, the effectiveness of an itaconic acid (IA) graft copolymer on native corn starch (NCS) as a filter control agent in fresh water-based drilling fluids (WBDFs) was evaluated. The copolymer (S-g-IA_APS) was synthesized by conventional radical dispersion polymerization using the redox initiation system (NH4)2S2O8/NaHSO3. The modification of the starches was verified by volumetry, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). Then, three WBDFs were formulated in which only the added polymer (NCS, S-g-IA_APS, and a commercial starch (CPS)) was varied to control the fluid losses. The physico-chemical, rheological, and filtering properties of the formulated systems were evaluated in terms of density (ρ), pH, plastic viscosity (µp), apparent viscosity (µa), yield point (Yp), gel strength (Rg), and filtrated volume (VAPI). In order to evaluate the resistance to temperature and contaminants of the WBDFs, they were subjected to high pressure and high temperature filtering (VHPHT). The filter control agents were also subjected to aging and contamination with cement and salt. The S-g-IA_APS addition improved the filtering behavior at a high pressure and temperature by 38%.
Collapse
Affiliation(s)
- Diana Soto
- Laboratorio de Polímeros y Reacciones, Escuela de Ingeniería Química, Facultad de Ingeniería, Universidad del Zulia, Sector Grano de Oro, Maracaibo 4011, Venezuela; (D.S.); (J.U.)
| | - Orietta León
- Laboratorio de Polímeros y Reacciones, Escuela de Ingeniería Química, Facultad de Ingeniería, Universidad del Zulia, Sector Grano de Oro, Maracaibo 4011, Venezuela; (D.S.); (J.U.)
| | - José Urdaneta
- Laboratorio de Polímeros y Reacciones, Escuela de Ingeniería Química, Facultad de Ingeniería, Universidad del Zulia, Sector Grano de Oro, Maracaibo 4011, Venezuela; (D.S.); (J.U.)
| | - Alexandra Muñoz-Bonilla
- Departamento de Química y Propiedades de Materiales Poliméricos, Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain;
- Interdisciplinary Platform for Sustainable Plastics towards a Circular Economy-Spanish National Research Council (SusPlast-CSIC), 28006 Madrid, Spain
| | - Marta Fernández-García
- Departamento de Química y Propiedades de Materiales Poliméricos, Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain;
- Interdisciplinary Platform for Sustainable Plastics towards a Circular Economy-Spanish National Research Council (SusPlast-CSIC), 28006 Madrid, Spain
| |
Collapse
|
50
|
Synthesis of Corn Starch Derivatives and Their Application in Yarn Sizing. Polymers (Basel) 2020; 12:polym12061251. [PMID: 32486138 PMCID: PMC7361798 DOI: 10.3390/polym12061251] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 05/28/2020] [Accepted: 05/28/2020] [Indexed: 11/17/2022] Open
Abstract
The use of synthesized natural starches for the sizing process in fabric production is primarily an environmental contribution. Synthesized corn starch is environmentally friendly and productive, showing good results in cotton yarn sizing. Acrylamide (AA) and 2-hydroxyethyl methacrylate (HEMA) were applied for the grafting process of corn starch, and the initiators azobisisobutyronitrile (AIBN), potassium persulfate (KPS), and benzoyl peroxide (BP) were chosen to form the grafted monomers more effectively. The application of synthesized corn starch has been confirmed, especially with the AIBIN initiator in the grafting process of HEMA onto starch. The FTIR analysis confirmed that new and efficient products for sizing cotton yarns based on natural raw material (corn) were developed. The research showed that the synthesized corn starch improved physical-mechanical yarn properties and abrasion resistance and reduced yarn surface hairiness. Ultrasonic desizing of yarn and the use of a lower size concentration led to better results than desizing by washing, and the Tegewa numbers confirmed that the desizing process was successful.
Collapse
|