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Tuan HNA, Phan BTC, Giang HN, Nguyen GT, Le TDH, Phuong H. Impact of Modifications from Potassium Hydroxide on Porous Semi-IPN Hydrogel Properties and Its Application in Cultivation. Polymers (Basel) 2024; 16:1195. [PMID: 38732665 PMCID: PMC11085908 DOI: 10.3390/polym16091195] [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: 03/16/2024] [Revised: 04/18/2024] [Accepted: 04/19/2024] [Indexed: 05/13/2024] Open
Abstract
This study synthesized and modified a semi-interpenetrating polymer network hydrogel from polyacrylamide, N,N'-dimethylacrylamide, and maleic acid in a potassium hydroxide solution. The chemical composition, interior morphology, thermal properties, mechanical characteristics, and swelling behaviors of the initial hydrogel (SH) and modified hydrogel (SB) in water, salt solutions, and buffer solutions were investigated. Hydrogels were used as phosphate fertilizer (PF) carriers and applied in farming techniques by evaluating their impact on soil properties and the growth of mustard greens. Fourier-transform infrared spectra confirmed the chemical composition of SH, SB, and PF-adsorbed hydrogels. Scanning electron microscopy images revealed that modification increased the largest pore size from 817 to 1513 µm for SH and SB hydrogels, respectively. After modification, the hydrogels had positive changes in the swelling ratio, swelling kinetics, thermal properties, mechanical and rheological properties, PF absorption, and PF release. The modification also increased the maximum amount of PF loaded into the hydrogel from 710.8 mg/g to 770.9 mg/g, while the maximum % release of PF slightly increased from 84.42% to 85.80%. In addition, to evaluate the PF release mechanism and the factors that influence this process, four kinetic models were applied to confirm the best-fit model, which included zero-order, first-order, Higuchi, and Korsmeyer-Peppas. In addition, after six cycles of absorption and release in the soil, the hydrogels retained their original shapes, causing no alkalinization or acidification. At the same time, the moisture content was higher as SB was used. Finally, modifying the hydrogel increased the mustard greens' lifespan from 20 to 32 days. These results showed the potential applications of modified semi-IPN hydrogel materials in cultivation.
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Affiliation(s)
- Huynh Nguyen Anh Tuan
- Faculty of Chemical and Food Technology, Ho Chi Minh City University of Technology and Education, No. 1, Vo Van Ngan Street, Linh Chieu Ward, Thu Duc, Ho Chi Minh City 71307, Vietnam; (B.T.C.P.); (G.T.N.); (T.D.H.L.); (H.P.)
| | - Bui Thi Cam Phan
- Faculty of Chemical and Food Technology, Ho Chi Minh City University of Technology and Education, No. 1, Vo Van Ngan Street, Linh Chieu Ward, Thu Duc, Ho Chi Minh City 71307, Vietnam; (B.T.C.P.); (G.T.N.); (T.D.H.L.); (H.P.)
| | - Ha Ngoc Giang
- Faculty of Chemical Technology, Ho Chi Minh City University of Industry and Trade, No. 140, Le Trong Tan Street, Tay Thanh Ward, Tan Phu District, Ho Chi Minh City 72009, Vietnam;
| | - Giang Tien Nguyen
- Faculty of Chemical and Food Technology, Ho Chi Minh City University of Technology and Education, No. 1, Vo Van Ngan Street, Linh Chieu Ward, Thu Duc, Ho Chi Minh City 71307, Vietnam; (B.T.C.P.); (G.T.N.); (T.D.H.L.); (H.P.)
| | - Thi Duy Hanh Le
- Faculty of Chemical and Food Technology, Ho Chi Minh City University of Technology and Education, No. 1, Vo Van Ngan Street, Linh Chieu Ward, Thu Duc, Ho Chi Minh City 71307, Vietnam; (B.T.C.P.); (G.T.N.); (T.D.H.L.); (H.P.)
| | - Ho Phuong
- Faculty of Chemical and Food Technology, Ho Chi Minh City University of Technology and Education, No. 1, Vo Van Ngan Street, Linh Chieu Ward, Thu Duc, Ho Chi Minh City 71307, Vietnam; (B.T.C.P.); (G.T.N.); (T.D.H.L.); (H.P.)
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Diao CC, Wu CC. Synthesis and Characterization of Thermosensitive P(NIPAAm- co-AAc)-Grafted Silica Nanocomposites for Smart Architectural Coatings. ACS OMEGA 2022; 7:8697-8705. [PMID: 35309424 PMCID: PMC8928337 DOI: 10.1021/acsomega.1c06776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 01/28/2022] [Indexed: 06/14/2023]
Abstract
In this study, a new class of thermosensitive poly(N-isopropylacrylamide)-co-poly(acrylic acid) (P(NIPAAm-co-AAc))-grafted modified silica (m-silica) nanocomposites was prepared using a sol-gel technique. The addition of silica to P(NIPAAm-co-AAc) copolymer hydrogel has the potential to open up new applications in the development of thermosensitive building materials by leveraging the favorable thermal characteristics of P(NIPAAm-co-AAc). The silica was prepared using 3-aminopropyltriethoxysilane and 4,4'-azobis(4-cyanovaleric acid) to form the m-silica powder, which increased the adhesion between the organic and inorganic hybrid materials. The P(NIPAAm-co-AAc) copolymer hydrogel was mixed with the m-silica to form the P(NIPAAm-co-AAc)-grafted m-silica nanocomposites. Scanning electron microscopy, X-ray diffraction analysis, thermogravimetric analysis, Fourier-transform infrared spectroscopy, and thermosensitive measurement were conducted to evaluate the structure and water-holding capacity of the nanocomposites. The results indicated that the P(NIPAAm-co-AAc)-grafted m-silica nanocomposites could retain water for more than 300 min at temperatures higher than the lower critical solution temperature. The P(NIPAAm-co-AAc)-grafted m-silica nanocomposites exhibited favorable thermosensitive properties and may therefore be applied in smart architectural coatings.
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Affiliation(s)
- Chien-Chen Diao
- Department
of Electronic Engineering, Kao Yuan University, Kaohsiung 82151, Taiwan, R.O.C.
| | - Chia-Ching Wu
- Department
of Applied Science, National Taitung University, Taitung 95092, Taiwan, R.O.C.
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Özkahraman B, Yıldırım E, Emik S, Acar I. The removal of Cu(II) and Pb(II) ions from aqueous solutions by temperature-sensitive hydrogels based on N-isopropylacrylamide and itaconic acid. MAIN GROUP CHEMISTRY 2021. [DOI: 10.3233/mgc-210056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This study deals with the potential use of poly(N-isopropylacrylamide-co-itaconic acid) temperature-sensitive hydrogels as an adsorbent for the removal of Cu(II) and Pb(II) ions from aqueous solutions. For this aim, the adsorption properties of hydrogels were examined by adsorption capacities, adsorption isotherm, and adsorption kinetics experiments. To describe the adsorption characteristics of hydrogels, the obtained experimental data were evaluated by Langmuir, Freundlich, Redlich-Peterson, and Dubinin-Radushkevich isotherm models. Adsorption kinetics experiments were carried out not only in single systems but also in binary systems where both ions were at equal initial concentrations for competitive adsorption studies. To predict the behaviors of the competitive and non-competitive adsorption process of ions onto hydrogels, the experimental adsorption data were analyzed by the pseudo-first-order model and the pseudo-second-order model. According to non-competitive ion removal findings, the adsorption capacities followed order Cu(II) > Pb(II) for all hydrogels, and the pseudo-second-order kinetic model explained the adsorption properties of the hydrogels. Competitive ion removal studies showed that all hydrogels were selective to Cu(II) ion. Furthermore, in the case of comparative investigations both of competitive Cu(II) and competitive Pb(II) removal by hydrogels, the metal ion removal capacity of N10 hydrogel was found as a bit higher than that of N7.5 and N5 in 48 h. That is, as the acidic group content increased in the hydrogel network, the adsorption capacity values also increased. In addition, the reusability of temperature-sensitive hydrogels seems possible without regeneration or after regenerating with acid, in case the temperature is increased above the LCST. Furthermore, even if it cannot be reused, these hydrogels that retain metal ions reach very small volumes by shrinking when the LSCT is exceeded, and thus they can be eliminated more easily than other conventional gels due to their small size. As a result, this temperature-sensitive hydrogel may propose as an alternative environmentally friendly adsorbent candidate for can be used for water purification and wastewater treatment.
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Affiliation(s)
- Bengi Özkahraman
- Hitit University, Faculty of Engineering, Polymer Engineering Department, Çorum, Turkey
| | - Eren Yıldırım
- Istanbul University-Cerrahpaşa, Faculty of Engineering, Chemical Engineering Department, Avcılar, Istanbul, Turkey
| | - Serkan Emik
- Istanbul University-Cerrahpaşa, Faculty of Engineering, Chemical Engineering Department, Avcılar, Istanbul, Turkey
| | - Işıl Acar
- Istanbul University-Cerrahpaşa, Faculty of Engineering, Chemical Engineering Department, Avcılar, Istanbul, Turkey
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Drozdov AD, Christiansen JD. Modulation of the volume phase transition temperature of thermo-responsive gels. J Mech Behav Biomed Mater 2020; 114:104215. [PMID: 33234497 DOI: 10.1016/j.jmbbm.2020.104215] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 10/26/2020] [Accepted: 11/15/2020] [Indexed: 12/13/2022]
Abstract
Thermo-responsive (TR) gels swell substantially below their volume phase transition temperature Tc and shrink above this temperature. Applications of TR gels in controlled drug delivery and their use as biosensors and temperature-triggered soft actuators require fine tuning of Tc. As the critical temperature is independent of the preparation conditions and molar fractions of monomers and cross-linkers, it is modulated by incorporation of (neutral or ionic) monomers and polymer chains into pre-gel solutions for TR gels. A model is developed for the mechanical response and equilibrium swelling of TR gels. Analytical formulas are derived for the effect of molar fraction of comonomers on the volume phase transition temperature Tc in copolymer gels and gels with semi-interpenetrating networks. Adjustable parameters are found by fitting equilibrium swelling diagrams on poly(N,N-diethylacrylamide) gels. Good agreement is demonstrated between predictions of the model and experimental data.
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Affiliation(s)
- A D Drozdov
- Department of Materials and Production, Aalborg University, Fibigerstraede 16, Aalborg 9220, Denmark.
| | - J deClaville Christiansen
- Department of Materials and Production, Aalborg University, Fibigerstraede 16, Aalborg 9220, Denmark
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Tuan HNA, Nhu VTT. Synthesis and Properties of pH-Thermo Dual Responsive Semi-IPN Hydrogels Based on N, N'-Diethylacrylamide and Itaconamic Acid. Polymers (Basel) 2020; 12:E1139. [PMID: 32429371 PMCID: PMC7285170 DOI: 10.3390/polym12051139] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 05/12/2020] [Accepted: 05/13/2020] [Indexed: 11/16/2022] Open
Abstract
A series of semi-interpenetrating polymer network (semi-IPN) hydrogels based on N,N'-diethylacrylamide (DEA) and itaconamic acid (IAM) were synthesized by changing the molar ratio of linear copolymer P(DEA-co-IAM) and DEA monomer. Linear copolymer P(DEA-co-IAM) was introduced into a solution of DEA monomer to prepare pH-thermo dual responsive P(DEA-co-IAM)/PDEA semi-IPN hydrogels. The thermal gravimetric analysis (TGA) revealed that the semi-IPN hydrogel has a higher thermal stability than the conventional hydrogel, while the interior morphology by scanning electron microscopy (SEM) showed a porous structure with the pore sizes could be controlled by changing the ratio of linear copolymer in the obtained hydrogels. The oscillatory parallel-plate rheological measurements and compression tests demonstrated a viscoelastic behavior and superior mechanical properties of the semi-IPN hydrogels. Besides, the lower critical solution temperature (LCST) of the linear copolymers increased with the increase of IAM content in the feed, while the semi-IPN hydrogels increased LCSTs with the increase of linear copolymer content introduced. The pH-thermo dual responsive of the hydrogels was investigated using the swelling behavior in various pH and temperature conditions. Finally, the swelling and deswelling rate of the hydrogels were also studied. The results indicated that the pH-thermo dual responsive semi-IPN hydrogels were synthesized successfully and may be a potential material for biomedical, drug delivery or absorption applications. The further applications of semi-IPN hydrogels are being conducted.
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Affiliation(s)
- Huynh Nguyen Anh Tuan
- Faculty of Chemical and Food Technology, HCMC University of Technology and Education, #1, Vo Van Ngan Street, Linh Chieu Ward, Thu Duc District, Ho Chi Minh City 70000, Vietnam;
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Orakdogen N, Sanay B. Dynamical modeling and experimental aspects of multi-responsive hydroxy-functional methacrylate-based gels with tunable swelling induced by multivalent ions. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.09.051] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Clara I, Lavanya R, Natchimuthu N. pH and temperature responsive hydrogels of poly(2-acrylamido-2-methyl-1-propanesulfonic acid-co-methacrylic acid): Synthesis and swelling characteristics. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2016. [DOI: 10.1080/10601325.2016.1189282] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Saikia AK, Aggarwal S, Mandal UK. Electrically induced swelling and methylene blue release behaviour of poly (N-isopropylacrylamide-co-acrylamido-2-methylpropyl sulphonic acid) hydrogels. Colloid Polym Sci 2015. [DOI: 10.1007/s00396-015-3719-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yenice Z, Schön S, Bildirir H, Genzer J, von Klitzing R. Thermoresponsive PDMAEMA Brushes: Effect of Gold Nanoparticle Deposition. J Phys Chem B 2015; 119:10348-58. [DOI: 10.1021/acs.jpcb.5b04757] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | - Jan Genzer
- Department
of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
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Li H, Wu R, Zhu J, Guo P, Ren W, Xu S, Wang J. pH/temperature double responsive behaviors and mechanical strength of laponite-crosslinked poly(DEA-co
-DMAEMA) nanocomposite hydrogels. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/polb.23713] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Huili Li
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uyghur Autonomous Region, College of Chemistry and Chemical Engineering; Xinjiang University, No. 666 Shengli Road Urumqi Xinjiang 830046 China
| | - Ronglan Wu
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uyghur Autonomous Region, College of Chemistry and Chemical Engineering; Xinjiang University, No. 666 Shengli Road Urumqi Xinjiang 830046 China
| | - Jinlong Zhu
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uyghur Autonomous Region, College of Chemistry and Chemical Engineering; Xinjiang University, No. 666 Shengli Road Urumqi Xinjiang 830046 China
| | - Pingping Guo
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uyghur Autonomous Region, College of Chemistry and Chemical Engineering; Xinjiang University, No. 666 Shengli Road Urumqi Xinjiang 830046 China
| | - Wenchen Ren
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uyghur Autonomous Region, College of Chemistry and Chemical Engineering; Xinjiang University, No. 666 Shengli Road Urumqi Xinjiang 830046 China
| | - Shimei Xu
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uyghur Autonomous Region, College of Chemistry and Chemical Engineering; Xinjiang University, No. 666 Shengli Road Urumqi Xinjiang 830046 China
| | - Jide Wang
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uyghur Autonomous Region, College of Chemistry and Chemical Engineering; Xinjiang University, No. 666 Shengli Road Urumqi Xinjiang 830046 China
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Maheswari B, Jagadeesh Babu P, Agarwal M. Role of N-vinyl-2-pyrrolidinone on the thermoresponsive behavior of PNIPAm hydrogel and its release kinetics using dye and vitamin-B12 as model drug. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2013; 25:269-86. [DOI: 10.1080/09205063.2013.854149] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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12
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Saikia AK, Aggarwal S, Mandal UK. Preparation and Controlled Drug Release Characteristics of Thermoresponsive PEG/Poly (NIPAM-co-AMPS) Hydrogels. INT J POLYM MATER PO 2013. [DOI: 10.1080/00914037.2012.664208] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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13
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Zhang N, Shen Y, Li X, Cai S, Liu M. Synthesis and characterization of thermo- and pH-sensitive poly(vinyl alcohol)/poly(N, N-diethylacrylamide-co-itaconic acid) semi-IPN hydrogels. Biomed Mater 2012; 7:035014. [PMID: 22493167 DOI: 10.1088/1748-6041/7/3/035014] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
In this paper, a series of thermo- and pH-sensitive poly(vinyl alcohol)/poly(N, N-diethylacrylamide-co-itaconic acid) (PVA/P(DEA-co-IA)) semi-interpenetrating polymer network (semi-IPN) hydrogels were synthesized by radical polymerization and semi-IPN technology. The influence of PVA on the property of resulting PVA/P(DEA-co-IA) (PVA/PDI) semi-IPN hydrogels was investigated and characterized. The interior morphology observed by scanning electron microscopy (SEM) revealed that freeze-dried semi-IPN hydrogels had small pore size and interconnected porous network structures. X-ray diffraction (XRD) studies showed that a sharp characteristic peak of PVA in semi-IPN hydrogel could be observed at about 2θ = 20°. The incorporation of PVA decreased the equilibrium swelling ratio of modified hydrogels when compared with a usual PDI hydrogel. The semi-IPN hydrogels exhibited unconventional thermosensitive characteristics, such as faster deswelling rates and slower swelling rates in response to temperature change, and excellent mutative values in response to an alternation of the pH value, the changing degree of which depended on the PVA content. The release behaviors of the model drug, aminophylline, were found to be dependent on hydrogel compositions and the environmental temperature. Compared with the usual PDI hydrogel, the drug release rate of the semi-IPN hydrogel is slower, which could be expected to be useful in the biomedical and biotechnology fields.
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Affiliation(s)
- Naiyan Zhang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, People's Republic of China
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Chen J, Dai P, Liu M. Rapid Responsive Behaviors of the Dual Stimuli-Sensitive Poly(DEA-co-DMAEMA) Hydrogel via Comb-Type Grafted Polymeriziation. INT J POLYM MATER PO 2012. [DOI: 10.1080/00914037.2011.557805] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Ngadaonye JI, Geever LM, Cloonan MO, Higginbotham CL. Photopolymerised thermo-responsive poly(N,N-diethylacrylamide)-based copolymer hydrogels for potential drug delivery applications. JOURNAL OF POLYMER RESEARCH 2012. [DOI: 10.1007/s10965-012-9822-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Zhao C, He P, Xiao C, Gao X, Zhuang X, Chen X. Photo-cross-linked biodegradable thermo- and pH-responsive hydrogels for controlled drug release. J Appl Polym Sci 2011. [DOI: 10.1002/app.34935] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Si T, Wang Y, Wei W, Lv P, Ma G, Su Z. Effect of acrylic acid weight percentage on the pore size in poly(N-Isopropyl acrylamide-co-acrylic acid) microspheres. REACT FUNCT POLYM 2011. [DOI: 10.1016/j.reactfunctpolym.2011.04.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Horák D, Matulka K, Hlídková H, Lapčíková M, Beneš MJ, Jaroš J, Hampl A, Dvořák P. Pentapeptide-modified poly(N,N-diethylacrylamide) hydrogel scaffolds for tissue engineering. J Biomed Mater Res B Appl Biomater 2011; 98:54-67. [PMID: 21563303 DOI: 10.1002/jbm.b.31832] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2010] [Revised: 01/14/2011] [Accepted: 01/25/2011] [Indexed: 12/12/2022]
Abstract
Poly(N,N-diethylacrylamide) (PDEAAm) hydrogel scaffolds were prepared by radical copolymerization of N,N-diethylacrylamide (DEAAm), N,N'-methylenebisacrylamide and methacrylic acid in the presence of (NH₄)₂SO₄ or NaCl. The hydrogels were characterized by low-vacuum scanning electron microscopy in the water-swollen state, water and cyclohexane regain, and by mercury porosimetry. The pentapeptide, YIGSR-NH₂, was immobilized on the hydrogel. Human embryonic stem cells (hESCs) were cultured with the hydrogels to test their biocompatibility. The results suggest that the PDEAAm hydrogel scaffolds are nontoxic and support hESC attachment and proliferation, and that interconnected pores of the scaffolds are important for hESC cultivation. Immobilization of YIGSR-NH₂ pentapeptide on the PDEAAm surface improved both adhesion and growth of hESCs compared with the unmodified hydrogel. The YIGSR-NH₂-modified PDEAAm hydrogels may be a useful tool for tissue-engineering purposes.
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Affiliation(s)
- Daniel Horák
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, 16206 Prague 6, Czech Republic.
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Chen J, Liu M, Chen W, Zhang N, Zhu S, Zhang S, Xiong Y. Synthesis, swelling and drug-release behaviour of a poly(N,N-diethylacrylamide-co-(2-dimethylamino) ethyl methacrylate) hydrogel. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2010; 22:1049-68. [PMID: 20594406 DOI: 10.1163/092050610x498196] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In this study, poly(N,N-diethylacrylamide-co-(2-dimethylamino) ethyl methacrylate) (poly(DEA-co-DMAEMA)) hydrogels were synthesized by changing the initial DEA/DMAEMA mol ratio. The hydrogels were characterized by Fourier transform infrared (FT-IR) spectroscopy and scanning electron microscopy (SEM). In comparison with the PDEA hydrogel, the equilibrium swelling ratio (ESR) and lower critical solution temperature (LCST) of the hydrogels increase with the increase of DMAEMA content in the feed. The deswelling and reswelling kinetics and cytotoxicity of the different composition ratios of DEA to DMAEMA in the co-polymerized hydrogels were also investigated in detail. The absorption and release behaviour of the model drug, bovine serum albumin, were found to be dependent on hydrogel composition and environment temperature, which suggests that these materials have potential application as intelligent drug carriers.
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Affiliation(s)
- Jun Chen
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou 730000, P R China
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Dual-stimuli sensitive composites based on multi-walled carbon nanotubes and poly(N,N-diethylacrylamide-co-acrylic acid) hydrogels. REACT FUNCT POLYM 2010. [DOI: 10.1016/j.reactfunctpolym.2010.02.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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In vitro cytotoxicity and drug release properties of pH- and temperature-sensitive core-shell hydrogel microspheres. Int J Pharm 2009; 385:86-91. [PMID: 19879345 DOI: 10.1016/j.ijpharm.2009.10.037] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2009] [Revised: 10/19/2009] [Accepted: 10/20/2009] [Indexed: 11/21/2022]
Abstract
A simple method has been developed to prepare smart P(N,N-diethylacrylamide-co-methacrylic acid) (P(DEA-co-MAA)) microspheres that consist of well-defined temperature-sensitive cores and pH sensitive shells. The microgels have been prepared by surfactant-free emulsion polymerization using water as the solvent. The core-shell hydrogel microspheres have been characterized by Fourier transform infrared (FTIR) spectroscopy, UV spectrometry, dynamic light scattering (DLS) and transmission electron micrograph (TEM). Preliminary characterization of the biocompatibility of hydrogel microspheres has been done by the cytotoxicity assays using the HeLa human breast cancer cell line as probes. The in vitro drug release indicates that drug release rate, encapsulation efficiency (EE) and release kinetics depend upon the pH value and copolymer composition. According to this study, the hydrogel microspheres based on P(DEA-co-MAA) could serve as suitable candidate for drug site-specific carrier in intestine.
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Synthesis and characterization of a pH/temperature responsive glycine-mediated hydrogel for drug release. ACTA ACUST UNITED AC 2009. [DOI: 10.1007/s11706-009-0069-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Jagur-Grodzinski J. Polymeric gels and hydrogels for biomedical and pharmaceutical applications. POLYM ADVAN TECHNOL 2009. [DOI: 10.1002/pat.1504] [Citation(s) in RCA: 280] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Chen J, Liu M, Liu H, Ma L. Synthesis, swelling and drug release behavior of poly(N,N-diethylacrylamide-co-N-hydroxymethyl acrylamide) hydrogel. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2009. [DOI: 10.1016/j.msec.2009.04.008] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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