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Raka AM, Takada A, Hossain KS. Effect of heat treatment on conformational and structural properties of sugar beet pectin. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2021. [DOI: 10.1016/j.carpta.2021.100149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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2
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Su G, Jiang YJ, Ju HB, Wang YK, Yu SX, Luo YY, Geng T. Synthesis, Surface Tension, Flocculation and Antibacterial Properties of Cationic Copolymer Methacryloxyethyl Trimethyl Ammonium Chloride-Butyl Acrylate-Acrylamide. TENSIDE SURFACT DET 2021. [DOI: 10.1515/tsd-2020-2285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Three cationic copolymers methacryloxyethyl trimethyl ammonium chloride-butyl acrylate-acrylamide (MTAC-BA-AM terpolymer) were designed and synthesized by emulsion polymerization. Their structures were confirmed by FT-IR and 1H NMR. The effect of content of hydrophobic monomer butyl acrylate (BA) in MTAC-BA-AM terpolymer on surface activities, flocculation and antibacterial properties were investigated. The study of surface tension shows that MTAC-BA-AM terpolymer has good surface activity due to the introduction of hydrophobic monomer BA. The flocculation experiment showed that the light transmittance of the kaolin suspension supernatant was 98.13% when the dose of MTAC-BA-AM terpolymer in the kaolin suspension was 0.03 mg/L, which was obviously better than the P(MTAC-AM) (91.02%) without hydrophobic modification of BA. The bacteriostatic experiment of MTAC-BA-AM terpolymer showed that as the content of hydrophobic monomer BA in MTAC-BA-AM terpolymer increased the inhibitory rate of MTAC-BA-AM terpolymer aginst Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus)
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Affiliation(s)
- Geng Su
- China Research Institute of Daily Chemical Industry , Taiyuan , Shanxi Province China
| | - Ya-Jie Jiang
- China Research Institute of Daily Chemical Industry , Taiyuan , Shanxi Province China
| | - Hong-Bin Ju
- China Research Institute of Daily Chemical Industry , Taiyuan , Shanxi Province China
| | - Ya-Kui Wang
- China Research Institute of Daily Chemical Industry , Taiyuan , Shanxi Province China
| | - Shui-Xin Yu
- Shanghai ICAN Chemical S&T Co., Ltd , Shanghai , China
| | - Ye-Yuan Luo
- Shanghai ICAN Chemical S&T Co., Ltd , Shanghai , China
| | - Tao Geng
- China Research Institute of Daily Chemical Industry , Taiyuan , Shanxi Province China
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3
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Li P, Zhang F, Gong Y, Tang J, Zhang C, Sun Z, Liu G, Li X. Synthesis and properties of functional polymer for heavy oil viscosity reduction. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115635] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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4
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Liu L, Gou S, Ma Y, Zhou L, He Y, Liu L, Tang L, Fang S. A Thermal Thickening System Based on the Self-Assembly of a Zwitterionic Hydrophobic Association Polymer and Surfactant. Aust J Chem 2021. [DOI: 10.1071/ch20223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The zwitterionic monomer, 1-(2-hydroxypropyl-sulfo)-acrylamide ethyl-N,N-dimethyl ammonium chloride (MeSA) was copolymerised with acrylamide (AM), acrylic acid (AA), and a hydrophobic monomer N,N-diallyl oleamide (DNDA) to obtain the zwitterionic hydrophobic association polymer AM/AA/DNDA/MeSA. The structure of the hydrophobic association polymer was characterised by 1H NMR, FT-IR, and intrinsic viscosity studies. The self-assembly system of the polymer and the surfactant Tween-40 was then formed, and the rheological properties and adsorptive performance of the self-assembly system were investigated. The result showed that the polymer–surfactant self-assembly system had good properties such as thickening, temperature resistance, salt resistance, and shear resistance. It is shown that the thermal thickening phenomenon, which allows the system to be used as a good petrochemical product in a high-temperature environment, provides a vital research foundation for the future application of this kind of self-assembly system.
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Drag Reduction Performance and Mechanism of Hydrophobic Polymers in Fresh Water and Brine. Polymers (Basel) 2020; 12:polym12040955. [PMID: 32325993 PMCID: PMC7240719 DOI: 10.3390/polym12040955] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 04/05/2020] [Accepted: 04/06/2020] [Indexed: 11/17/2022] Open
Abstract
Three kinds of drag reducer were synthesized by inverse emulsion polymerization and named PHWAM-1, PHWAM-2, and PHWAM-3. Drag reduction (DR) tests showed that the three drag reducers have different DR characteristics in fresh water and various saline waters because of their different types of hydrophobic monomers. PHWAM-1, without hydrophobic monomers, performs better in fresh water, while PHWAM-2 and PHWAM-3, with hydrophobic monomers, perform better in brine. In addition, PHWAM-3, which has twin-tailed hydrophobic monomers, performs best in high-concentration brine. Measurements of micro-particle size and observations of spatial structure suggest that although the stronger hydrophobic polymer has no DR advantage over a linear polymer in fresh water, the molecular chains form a mutually associative supporting structure that improves the DR performance over that of a linear polymer in high-concentration brine.
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Lopez CG, Richtering W. Viscosity of Semidilute and Concentrated Nonentangled Flexible Polyelectrolytes in Salt-Free Solution. J Phys Chem B 2019; 123:5626-5634. [PMID: 31124680 DOI: 10.1021/acs.jpcb.9b03044] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
We report viscosity data of nonentangled sodium polystyrene sulfonate (NaPSS) in salt-free aqueous solution as a function of polymer concentration ( c) and degree of polymerization ( N). Different empirical equations are examined and found not to describe the semidilute solution viscosity over a wide concentration range and/or to yield values of [η] that do not match dilute solution measurements. Deviations from the scaling prediction of ηsp ∝ c1/2 (Fuoss' law) are observed at high concentrations. Specifically, we find ηsp ≈ N1.26 c1/2 e1.4 c in the semidilute regime, which agrees with the scaling prediction only for c ≲ 0.02 M. The viscosity data presented in this study and in earlier reports show a high degree of consistency. A comparison with diffusion measurements for NaPSS in salt-free solution by Oostwal and co-workers suggests that the disagreement between the scaling theory and experiments does not arise solely from the concentration dependence of the monomeric friction coefficient.
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Affiliation(s)
- Carlos G Lopez
- Institute of Physical Chemistry , RWTH Aachen University , Landoltweg 2 , 52056 Aachen , Germany
| | - Walter Richtering
- Institute of Physical Chemistry , RWTH Aachen University , Landoltweg 2 , 52056 Aachen , Germany
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Dragan ES, Bercea M, Sacarascu L. Tuning the associative properties and micelles geometry by stepwise quaternization of PDMAEMA. REACT FUNCT POLYM 2018. [DOI: 10.1016/j.reactfunctpolym.2018.01.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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8
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Zhong C, Meng X, Luo T. Effects of Monomer Feed Amounts on Solution Properties and Solution Morphologies for a Comb-like Ter-polymer. J MACROMOL SCI B 2017. [DOI: 10.1080/00222348.2017.1388729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Chuanrong Zhong
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (Chengdu University of Technology) Chengdu, Sichuan, China
- College of Energy, Chengdu University of Technology, Chengdu, Sichuan, China
| | - Xianghao Meng
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (Chengdu University of Technology) Chengdu, Sichuan, China
- College of Energy, Chengdu University of Technology, Chengdu, Sichuan, China
| | - Taotao Luo
- Drilling and Production Engineering Technology Research Institute, Chuanqing Drilling Engineering Co., Ltd., Guanhan, Sichuan, China
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9
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Mehrdad A, Parvini E. Interactions of sodium polystyrene sulfonate with some imidazolium-based ionic liquids in aqueous solutions. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.05.060] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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11
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Ghimici L. Cationic polyelectrolyte induced separation of some inorganic contaminants and their mixture (zirconium silicate, kaolin, K-feldspar, zinc oxide) as well as of the paraffin oil from water. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2016; 169:1-7. [PMID: 26716571 DOI: 10.1016/j.jenvman.2015.12.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 10/05/2015] [Accepted: 12/08/2015] [Indexed: 06/05/2023]
Abstract
The flocculation efficiency of a cationic polyelectrolyte with quaternary ammonium salt groups in the backbone, namely PCA5 was evaluated on zirconium silicate (kreutzonit), kaolin, K- feldspar and zinc oxide (ZnO) suspensions prepared either with each pollutant or with their mixture. The effect of several parameters such as settling time, polymer dose and the pollutant type on the separation efficacy was evaluated and followed by optical density and zeta potential measurements. Except for ZnO, the interactions between PCA5 and suspended particles led to low residual turbidity values (around 4% for kreutzonit, 5% for kaolin and 8% for K-feldspar) as well as to the reduction of flocs settling time (from 1200 min to 30 min and 120 min in case of kaolinit and K-feldspar, respectively), that meant a high efficiency in their separation. The negative value of the zeta potential and flocs size measurements, at the optimum polymer dose, point to contribution from charge patch mechanism for the particles flocculation. A good efficiency of PCA5 in separation of paraffin oil (a minimum residual turbidity of 9.8%) has been also found.
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Affiliation(s)
- Luminita Ghimici
- "Petru Poni" Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda, 41A, 700487 Iasi, Romania.
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Zhong C, Wang W, Lian X. Associative behavior in aqueous solutions for a salt-thickening tetra-polymer with allyl-capped macro-monomer. POLYMER SCIENCE SERIES A 2014. [DOI: 10.1134/s0965545x1404018x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Chen H, Wang ZM, Ye ZB, Han LJ. The solution behavior of hydrophobically associating zwitterionic polymer in salt water. J Appl Polym Sci 2013. [DOI: 10.1002/app.39707] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hong Chen
- State Key laboratory of Oil and Gas Reservoir Geology and Exploitation; Southwest Petroleum University; Chengdu People's Republic of China
| | - Zi-Min Wang
- State Key laboratory of Oil and Gas Reservoir Geology and Exploitation; Southwest Petroleum University; Chengdu People's Republic of China
- Chemistry and Chemical Engineering of Southwest Petroleum University; Chengdu People's Republic of China
| | - Zhong-Bin Ye
- State Key laboratory of Oil and Gas Reservoir Geology and Exploitation; Southwest Petroleum University; Chengdu People's Republic of China
- Chemistry and Chemical Engineering of Southwest Petroleum University; Chengdu People's Republic of China
| | - Li-Juan Han
- State Key laboratory of Oil and Gas Reservoir Geology and Exploitation; Southwest Petroleum University; Chengdu People's Republic of China
- Chemistry and Chemical Engineering of Southwest Petroleum University; Chengdu People's Republic of China
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14
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Hourdet D, Ducouret G, Varghese S, Badiger MV, Wadgaonkar PP. Thermodynamic behavior of hydrophobically modified polyacrylamide containing random distribution of hydrophobes: Experimental and theoretical investigations. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.03.039] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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15
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Zhong C, Zhang H, Jiang L. Rheological behavior of an acrylamide-based terpolymer with p-vinylbenzyl-terminated octylphenoxy poly(ethylene oxide). POLYMER SCIENCE SERIES A 2012. [DOI: 10.1134/s0965545x12100070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Zhong C, Jiang S, Jiang L. Surface and Interface Properties and Associated Behavior in Water and Brine Solutions of an Acrylamide-Based Terpolymer with a Macromonomer. J MACROMOL SCI B 2012. [DOI: 10.1080/00222348.2012.708246] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Chuanrong Zhong
- a Sate Key Laboratory of Oil and Gas Reservoir Geology and Exploitation , Chengdu University of Technology , Chengdu , Sichuan , China
| | - Shengcui Jiang
- a Sate Key Laboratory of Oil and Gas Reservoir Geology and Exploitation , Chengdu University of Technology , Chengdu , Sichuan , China
| | - Liufeng Jiang
- a Sate Key Laboratory of Oil and Gas Reservoir Geology and Exploitation , Chengdu University of Technology , Chengdu , Sichuan , China
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17
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Zhong C, Cai G, Rao M. Thickening and Associating Behavior in Aqueous Solutions of a Terpolymer with Poly(ethylene oxide) Side Chains. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2012. [DOI: 10.1080/10601325.2012.672051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Zhong C, Wang W, Yang M. Synthesis and solution properties of an associative polymer with excellent salt-thickening. J Appl Polym Sci 2012. [DOI: 10.1002/app.36743] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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19
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Gauthier M, Munam A. Arborescent polystyrene-graft-poly(2-vinylpyridine) copolymers: solution polyelectrolyte behavior. RSC Adv 2012. [DOI: 10.1039/c2ra20181j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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20
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Sultan AS, Al-Ahmed A, Javaid Zaidi S. Reduced viscosity, rheology and morphological properties of sulfonated poly (ether ether ketone): Polyetherimide blends. Eur Polym J 2011. [DOI: 10.1016/j.eurpolymj.2011.09.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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21
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Zhong C, Jiang L, Wang S. Association in Unsalted and Brine Solutions of a Water-Soluble Terpolymer with p-Vinylbenzyl-Terminated Octylphenoxy Poly(ethylene oxide). J SOLUTION CHEM 2011. [DOI: 10.1007/s10953-011-9755-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Chen H, Ye Z, Han L, Luo P. Studies on the self-assembly behavior of the hydrophobically associating polyacrylamide. J Appl Polym Sci 2011. [DOI: 10.1002/app.34756] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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23
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Vasile C, Nita LE. Novel multi-stimuli responsive sodium alginate-grafted-poly(N-isopropylacrylamide) copolymers: II. Dilute solution properties. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2011.04.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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24
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Dragan ES, Dinu IA. Solution behavior of progressively quaternized poly(dimethylaminoethyl methacrylate) as a function of charge density. Eur Polym J 2011. [DOI: 10.1016/j.eurpolymj.2011.02.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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25
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Zhou J, Shangguan Y, Wu Q, Zheng Q. Solution properties of hydrophobically modified polyelectrolytes synthesized via solution and micellar copolymerization. POLYM INT 2010. [DOI: 10.1002/pi.2955] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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26
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SEM Morphologies of a Water-Soluble Terpolymer with Vinyl Biphenyl in Aqueous and Brine Solutions. J SOLUTION CHEM 2010. [DOI: 10.1007/s10953-010-9506-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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27
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Souguir Z, Roudesli S, About-Jaudet E, Picton L, Le Cerf D. Novel cationic and amphiphilic pullulan derivatives II: pH dependant physicochemical properties. Carbohydr Polym 2010. [DOI: 10.1016/j.carbpol.2009.11.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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28
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Zhong C, Jiang L, Peng X. Synthesis and solution behavior of comb-like terpolymers with poly(ethylene oxide) macromonomer. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/pola.23888] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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29
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Ghimici L. Viscosity of Some Cationic Polyelectrolyte and its Potential Use as Flocculant in Solid/Liquid Separation Processes. J MACROMOL SCI B 2009. [DOI: 10.1080/00222340903274969] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Luminita Ghimici
- a Petru Poni Institute of Macromolecular Chemistry , Grigore Ghica Voda Alley , Iasi, Romania
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30
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Dragan ES, Dinu IA, Mihai M. Conformational changes of strong polycations in the presence of divalent counterions and their influence upon the flocculation efficiency. Colloids Surf A Physicochem Eng Asp 2009. [DOI: 10.1016/j.colsurfa.2009.07.044] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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31
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Ghimici L, Bercea M, Dragan ES. Rheological Behavior of Some Cationic Polyelectrolytes. J MACROMOL SCI B 2009. [DOI: 10.1080/00222340903035618] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Luminita Ghimici
- a “Petru Poni” Institute of Macromolecular Chemistry , Iasi, Romania
| | - Maria Bercea
- a “Petru Poni” Institute of Macromolecular Chemistry , Iasi, Romania
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Ghimici L, Nichifor M, Wolf B. Ionic Polymers Based on Dextran: Hydrodynamic Properties in Aqueous Solution and Solvent Mixtures. J Phys Chem B 2009; 113:8020-5. [DOI: 10.1021/jp900690f] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Luminita Ghimici
- “Petru Poni” Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda 41A, 700487 Iasi, Romania, and Institute of Physical Chemistry, University of Mainz, Welder-Weg 13, D-55099 Mainz, Germany
| | - Marieta Nichifor
- “Petru Poni” Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda 41A, 700487 Iasi, Romania, and Institute of Physical Chemistry, University of Mainz, Welder-Weg 13, D-55099 Mainz, Germany
| | - Bernhard Wolf
- “Petru Poni” Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda 41A, 700487 Iasi, Romania, and Institute of Physical Chemistry, University of Mainz, Welder-Weg 13, D-55099 Mainz, Germany
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33
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Zhong C, Luo P, Meng X. Rheologic Properties of a Water-Soluble Terpolymer with Vinyl Biphenyl. J SOLUTION CHEM 2009. [DOI: 10.1007/s10953-009-9382-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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34
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Zhong C, Luo P, Meng X. Aggregation behavior of a water-soluble terpolymer with vinyl biphenyl characterized by a fluorescent probe. J Appl Polym Sci 2009. [DOI: 10.1002/app.31071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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35
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Ghimici L, Nichifor M. Transport properties of some cationic amphiphilic polysaccharides: Effects of the side-chain length and solvent polarity. J Appl Polym Sci 2009. [DOI: 10.1002/app.29370] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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36
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Kadam VS, Badiger MV, Wadgaonkar PP, Ducouret G, Hourdet D. Synthesis and self-assembling properties of α,ω-hydroxy-poly(ethylene oxide) end-capped with 1-isocyanato-3-pentadecylcyclohexane. POLYMER 2008. [DOI: 10.1016/j.polymer.2008.07.064] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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37
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Cao X, Tan Y, Xu G, Wu D. Aggregation Behavior of Cationic Copolymer Methacryloxyethyl Trimethyl Ammonium Chloride‐Butyl Acrylate‐Acrylamide in Aqueous Solution. J DISPER SCI TECHNOL 2008. [DOI: 10.1080/01932690701688417] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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38
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Lu L, Liu X, Tong Z, Gao Q. Critical exponents and self-similarity for sol-gel transition in aqueous alginate systems induced by in situ release of calcium cations. J Phys Chem B 2007; 110:25013-20. [PMID: 17149924 DOI: 10.1021/jp060155e] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The sol-gel transition in aqueous alginate systems induced by in situ released calcium cations was monitored with rheology methods. Four alginate samples with different molecular weights and M/G ratios were used over the concentration C(Alg) of 2 approximately 6 wt % with different mole ratios f of Ca2+ to the alginate repeat unit. The scaling for the zero shear viscosity eta(0) before the gel point and the equilibrium modulus Ge after the gel point was described as eta(0) approximately epsilon(-k) and Ge approximately epsilon(z), respectively, where the relative distance to the gel point f(gel) was epsilon = (/f-f(gel)/)/f(gel). The relaxation critical exponent n was determined with Winter's criterion, and the critical exponents k and z estimated respectively from independent measurements of eta(0) and Ge gave n from z/(k + z). Before the gel point, the storage and loss moduli G' and G'' obtained at various epsilon can be superposed fairly well to form the master curve. The critical exponents n, k, and z were also evaluated from the shift factors and the structure self-similarity was found in the critical gel. The critical exponents evaluated with different methods agreed well with each other, suggesting two categories of the gelation as growth and cross-link. For the alginate with lower molecular weight, the critical exponents were almost independent of alginate concentration and close to the percolation prediction. For the alginate with higher molecular weight, the critical exponents, however, changed with alginate sample and concentration. The relative alginate concentration C(Alg)/C(Alg)* was found to serve as a criterion to divide these two transitions.
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Affiliation(s)
- Lu Lu
- Research Institute of Materials Science, South China University of Technology, Guangzhou 510640, China
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39
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Zhong C, Luo P. Characterization, solution properties, and morphologies of a hydrophobically associating cationic terpolymer. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/polb.21097] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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40
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Ghimici L, Nichifor M. Transport properties of some cationic polysaccharides. J Colloid Interface Sci 2006; 302:589-96. [PMID: 16889787 DOI: 10.1016/j.jcis.2006.06.073] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2006] [Revised: 06/29/2006] [Accepted: 06/29/2006] [Indexed: 11/28/2022]
Abstract
The charge density effect on the behavior of some cationic polysaccharides in aqueous and nonaqueous (methanol) solutions was studied by viscometric and conductometric measurements. The polyelectrolytes investigated contain quaternary ammonium salt groups, N-alkyl-N,N-dimethyl-2-hydroxypropylene ammonium chloride, attached to a dextran backbone. This new class of polyelectrolytes has various linear charge density parameters, xi, located below and above the critical threshold value of counterions condensation, xi(c)=1(xi=0.25-3.18). The viscometric data revealed that all copolymers exhibit a polyelectrolyte behavior and were plotted in the terms of Rao equation. The conductometric measurements of solutions of these copolymers were presented as a function of polymer concentration and charge density. The results were analyzed within the Manning's theory and lower experimental values of the equivalent conductivity than the theoretical ones were found. Possible reasons of this discrepancy have been discussed. The interaction parameters were evaluated and these were found to depend on both the polymer concentration and the charge density. The conductometric behavior of these cationic polysaccharides has shown that counterion condensation is not a threshold phenomenon, their association to the charged groups of the polyions taking place for xi>1 as well as xi<1.
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Affiliation(s)
- Luminita Ghimici
- "Petru Poni" Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda, 41A, Iasi, Romania.
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Santini CMB, Hatton TA, Hammond PT. Solution behavior of linear-dendritic rod diblock copolymers in methanol. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2006; 22:7487-98. [PMID: 16922525 DOI: 10.1021/la060341b] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The solution behavior of spherical dendrimers as well as hybrid-linear dendritic diblock copolymers has been extensively studied, and the size, shape, and ability of these polymers to encapsulate small molecules have led to their comparison with traditional micelles. We have recently reported the synthesis of a new dendritic copolymer architecture, the linear-dendritic rod diblock copolymer, and in this work, we examine the solution behavior of these unique polymers in methanol at 25 degrees C, using dynamic light scattering and intrinsic viscosity measurements. The diblock copolymers consist of a linear poly(ethylene oxide)-poly(ethylene imine) diblock copolymer backbone around which poly(amido amine) branches have been divergently synthesized from the poly(ethylene imine) block. The hydrodynamic radii and the viscometric radii of the polymers were found to increase slowly with increasing generation up to generation 3.5; however, after generation 3.5, the radii were found to increase very rapidly. This increase can be explained by an elongation of the dendritic block into a more rodlike configuration and a corresponding breakdown of the spherical approximation used to calculate the radii. The intrinsic viscosity of the amine and ester terminated polymers was found to follow two very different trends at low generation; however, at higher generations, they followed similar, yet slightly different, curves with the values for the amine terminated polymers only a little larger than those of the ester terminated polymers. At low generations, the chemistry of the end groups and its interaction with the solvent were found to be more important, whereas at higher generations, the highly branched nature of the dendritic block was the more important factor. For the ester terminated polymers, a maximum in the intrinsic viscosity occurred at generation 1.5. Since this maximum occurred at a much lower generation number than is traditionally seen for spherical dendrimers, new scaling relations for the intrinsic viscosity of dendritic rod polymers were developed and were found to support this observation. A minimum in the intrinsic viscosity was also observed at generation 3.5 for the ester terminated polymers and a minimum or leveling off in the intrinsic viscosity at generation 4.0 was found for the amine terminated polymers, which can be attributed to the transitioning of the polymers to a more elongated, rodlike shape and the increased influence of the shape factor on the intrinsic viscosity.
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Affiliation(s)
- Catherine M B Santini
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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Rotureau E, Dellacherie E, Durand A. Viscosity of aqueous solutions of polysaccharides and hydrophobically modified polysaccharides: Application of Fedors equation. Eur Polym J 2006. [DOI: 10.1016/j.eurpolymj.2005.11.019] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Zhong C, Ye L, Dai H, Huang R. Flourescent probe and ESEM morphologies of a acrylamide-based terpolymer in aqueous solution. J Appl Polym Sci 2006. [DOI: 10.1002/app.25275] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Zhong C, Huang R, Ye L, Dai H. Study on the morphology of the novel hydrophobically associative acrylamide-based terpolymer in aqueous solution by AFM measurements. J Appl Polym Sci 2006. [DOI: 10.1002/app.22960] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Zhong C, Huang R, Zhang X, Dai H. Synthesis, characterization, and solution properties of an acrylamide-based terpolymer with butyl styrene. J Appl Polym Sci 2006. [DOI: 10.1002/app.25546] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Padmanabha Iyer N, Hourdet D, Badiger M, Chassenieux C, Perrin P, Wadgaonkar P. Synthesis and swelling behaviour of hydrophobically modified responsive polymers in dilute aqueous solutions. POLYMER 2005. [DOI: 10.1016/j.polymer.2005.10.140] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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47
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Solution properties of well-defined 2-(dimethylamino)ethyl methacrylate-based (co)polymers: A viscometric approach. Eur Polym J 2005. [DOI: 10.1016/j.eurpolymj.2005.02.002] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Amphiphilic poly(N,N-dimethylamino-2-ethyl methacrylate)-g-poly(ε-caprolactone) graft copolymers: synthesis and characterisation. Eur Polym J 2005. [DOI: 10.1016/j.eurpolymj.2004.12.016] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Ghimici L, Nichifor M. Electrical conductivity of some cationic polysaccharides. I. Effects of polyelectrolyte concentration, charge density, substituent at the ionic group, and solvent polarity. ACTA ACUST UNITED AC 2005. [DOI: 10.1002/polb.20650] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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50
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Percino MJ, Chapela VM, Jiménez A. Free radical polymerization kinetics of monomers functionalized with AsO(OH)2in aqueous media. J Appl Polym Sci 2004. [DOI: 10.1002/app.20928] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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