1
|
Gebhardt R, Hohn C, Asaduzzaman M. Stabilizing interactions of casein microparticles after a thermal post-treatment. Food Chem 2024; 450:139369. [PMID: 38653051 DOI: 10.1016/j.foodchem.2024.139369] [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: 02/09/2024] [Revised: 04/11/2024] [Accepted: 04/12/2024] [Indexed: 04/25/2024]
Abstract
Casein microparticles from milk are important carrier materials for bioactive substances with stability and swelling properties that can be influenced by heat treatment. Microparticles produced by depletion flocculation and film drying remain stable in acidic media but swell and disintegrate under slightly alkaline conditions. Heat treatment after formation can stabilize the microparticles via a disulfide bridge network and newly formed hydrophobic contacts. Temperatures >60 °C are required so that denatured whey protein initiate formation of disulfide bridges via thiol exchange reactions. The particles then swell in a two-step process and exhibit an overshooting effect. If formation of disulphide bridges is prevented during heat treatment by adding N-methylmaleimide, overshooting swelling disappears and microparticles continue to expand instead. The analysis with parallel system dynamics models is based on the swelling of uncross-linked caseins, which is limited by the expansion capacity of cross-linked caseins.
Collapse
Affiliation(s)
- Ronald Gebhardt
- RWTH Aachen University, Chair of Soft Matter Process Engineering (AVT.SMP), Germany.
| | - Calvin Hohn
- RWTH Aachen University, Chair of Soft Matter Process Engineering (AVT.SMP), Germany
| | - Md Asaduzzaman
- RWTH Aachen University, Chair of Soft Matter Process Engineering (AVT.SMP), Germany
| |
Collapse
|
2
|
Zhou Y, Xu D, Yu H, Han J, Liu W, Qu D. Encapsulation of Salmonella phage SL01 in alginate/carrageenan microcapsules as a delivery system and its application in vitro. Front Microbiol 2022; 13:906103. [PMID: 35992667 PMCID: PMC9386268 DOI: 10.3389/fmicb.2022.906103] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 06/29/2022] [Indexed: 11/17/2022] Open
Abstract
Phages can be used successfully to treat pathogenic bacteria including zoonotic pathogens that colonize the intestines of animals and humans. However, low pH and digestive enzyme activity under harsh gastric conditions affect phage viability, thereby reducing their effectiveness. In this study, alginate (ALG)/κ-carrageenan (CG) microcapsules were developed to encapsulate and release phage under simulated gastrointestinal conditions. The effects of ALG and CG concentrations on the encapsulation and loading efficiency of microcapsules, as well as the release behavior and antibacterial effects of microcapsules in simulating human intestinal pH and temperature, were investigated. Based on various indicators, when the concentration of ALG and CG were 2.0 and 0.3%, respectively, the obtained microcapsules have high encapsulation efficiency, strong protection, and high release efficiency in simulated intestinal fluid. This effect is attributed to the formation of a more tightly packed biopolymer network within the composite microcapsules based on the measurements of their microstructure properties. Bead-encapsulation is a promising, reliable, and cost-effective method for the functional delivery of phage targeting intestinal bacteria.
Collapse
Affiliation(s)
- Yuqiao Zhou
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Dingting Xu
- The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Haijie Yu
- Jiaxing Vocational Technical College, Jiaxing, China
| | - Jianzhong Han
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Weilin Liu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Daofeng Qu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
- *Correspondence: Daofeng Qu,
| |
Collapse
|
3
|
Mathematical modelling of cross-linked polyacrylic-based hydrogels: physical properties and drug delivery. Drug Deliv Transl Res 2022; 12:1928-1942. [PMID: 35152363 PMCID: PMC9242946 DOI: 10.1007/s13346-022-01129-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/03/2022] [Indexed: 11/24/2022]
Abstract
Recently, hydrogels have gained significant importance in different applications, such as tissue engineering and drug delivery. They are 3D structures of hydrophilic polymers held together through physical or chemical crosslinking. Important is their ability to swell in presence of solvents, forming elastic gels able to maintain their original shape. Furthermore, these scaffolds slowly degrade in the physiological environment, leading the growing tissue to replace the former filled site. In this work, hydrogels have been synthetized using branched polyacrylic acid (carbomer) cross-linked with an aliphatic polyetherdiamine (elastamine). In particular, we focused on the description of their equilibrium conditions in swollen state and the dynamic simulation of the swelling process. These hydrogels exhibited a peculiar swelling behaviour characterized by an overshoot of the volume increase before reaching the equilibrium. Notably, such behaviour was found at different pH values. In this manuscript, the swelling behaviour was studied by mathematical modelling. Moreover, the ability of these devices to release drugs was also examined through a literature model to understand the different operating transport mechanisms.
Collapse
|
4
|
Gu L, McClements DJ, Li J, Su Y, Yang Y, Li J. Formulation of alginate/carrageenan microgels to encapsulate, protect and release immunoglobulins: Egg Yolk IgY. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106349] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
5
|
Aangenendt FJ, Punter MTJJM, Mulder BM, van der Schoot P, Wyss HM. Nonmonotonic swelling and compression dynamics of hydrogels in polymer solutions. Phys Rev E 2021; 102:062606. [PMID: 33466094 DOI: 10.1103/physreve.102.062606] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 09/23/2020] [Indexed: 11/07/2022]
Abstract
Hydrogels are sponge-like materials that can absorb or expel significant amounts of water. Swelling up from a dried state, they can swell up more than a hundredfold in volume, with the kinetics and the degree of swelling depending sensitively on the physicochemical properties of both the polymer network and the aqueous solvent. In particular, the presence of dissolved macromolecules in the background liquid can have a significant effect, as the macromolecules can exert an additional external osmotic pressure on the hydrogel material, thereby reducing the degree of swelling. In this paper, we have submerged dry hydrogel particles in polymer solutions containing large and small macromolecules. Interestingly, for swelling in the presence of large macromolecules we observe a concentration-dependent overshoot behavior, where the particle volume first continuously increases toward a maximum, after which it decreases again, reaching a lower, equilibrium value. In the presence of smaller macromolecules we do not observe this intriguing overshoot behavior, but instead observe a rapid growth followed by a slowed-down growth. To account for the observed overshoot behavior, we realize that the macromolecules entering the hydrogel network not only lead to a reduction of the osmotic pressure difference, but their presence within the network also affects the swelling behavior through a modification of the solvent-polymer interactions. In this physical picture of the swelling process, the net amount of volume change should thus depend on the magnitudes of both the reduction in osmotic pressure and the change in effective solvent quality associated with the macromolecules entering the pores of the hydrogel network. We develop a phenomenological model that incorporates both of these effects. Using this model we are able to account for both the swelling and compression kinetics of hydrogels within aqueous polymer solutions, as a function of the size of the dissolved macromolecules and of their effect on the effective solvent quality.
Collapse
Affiliation(s)
- Frank J Aangenendt
- Department of Mechanical Engineering, Materials Technology, Eindhoven University of Technology, 5600MB Eindhoven, Netherlands.,Institute for Complex Molecular Systems, Eindhoven University of Technology, 5600MB Eindhoven, Netherlands.,Dutch Polymer Institute (DPI), P.O. Box 902, 5600AX Eindhoven, Netherlands
| | - Melle T J J M Punter
- AMOLF, Theory of Biomolecular Matter, Science Park 104, 1098XG Amsterdam, Netherlands
| | - Bela M Mulder
- AMOLF, Theory of Biomolecular Matter, Science Park 104, 1098XG Amsterdam, Netherlands
| | - Paul van der Schoot
- Department of Applied Physics, Eindhoven University of Technology, 5600MB Eindhoven, Netherlands.,Department of Physics, Utrecht University, 3584CC Utrecht, Netherlands
| | - Hans M Wyss
- Department of Mechanical Engineering, Materials Technology, Eindhoven University of Technology, 5600MB Eindhoven, Netherlands.,Institute for Complex Molecular Systems, Eindhoven University of Technology, 5600MB Eindhoven, Netherlands.,Dutch Polymer Institute (DPI), P.O. Box 902, 5600AX Eindhoven, Netherlands
| |
Collapse
|
6
|
The flexible segment adjusted gelation of the aliphatic polycarbonates: Preparation, mechanical properties, and self-healing behavior. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
7
|
|
8
|
Peng WL, Zhang ZP, Rong MZ, Zhang MQ. Reversibly Interlocked Macromolecule Networks with Enhanced Mechanical Properties and Wide pH Range of Underwater Self-Healability. ACS APPLIED MATERIALS & INTERFACES 2020; 12:27614-27624. [PMID: 32468811 DOI: 10.1021/acsami.0c07040] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A novel strategy for developing homogeneous reversibly interlocking polymer networks (RILNs) with enhanced mechanical properties and underwater self-healing ability is proposed. The RILNs are prepared by the topological reorganization of two preformed cross-linked polymers containing reversible catechol-Fe3+ coordinate bonds and imine bonds and exhibit enhanced mechanical properties, superior underwater self-healing effect within a wide pH range, and water-assisted recycling ability through synergetic action between the reversible catechol-Fe3+ and imine bonds. At higher pH values, the catechol-Fe3+ coordinate bonds are responsible for self-healing, while the imine bonds maintain the stability of the materials. In neutral water, the imine bonds mainly account for self-healing, and hydrogen bonds and entanglements between the two networks prevent the material from collapsing. Under a lower pH value, intermolecular hydrogen bonds and entanglements contribute to self-healing. The outcomes of this work provide a new idea for developing robust multifunctional underwater self-healing materials.
Collapse
Affiliation(s)
- Wei Li Peng
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD HPPC Lab, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Ze Ping Zhang
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD HPPC Lab, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Min Zhi Rong
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD HPPC Lab, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Ming Qiu Zhang
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD HPPC Lab, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| |
Collapse
|
9
|
Nita LE, Chiriac AP, Rusu AG, Bercea M, Ghilan A, Dumitriu RP, Mititelu-Tartau L. New self-healing hydrogels based on reversible physical interactions and their potential applications. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.05.053] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
10
|
Swelling behavior of hydrophobic association hydrogels prepared from octylphenol polyoxyethylene (7) acrylate and sodium dodecylsulfate. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.02.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
11
|
Okten NS, Canakci CC, Orakdogen N. Hertzian elasticity and triggered swelling kinetics of poly(amino ester)-based gel beads with controlled hydrophilicity and functionality: A mild and convenient synthesis via dropwise freezing into cryogenic liquid. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.02.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
12
|
Hybrid Hydrogels Toughened by Chemical Covalent Bonding and Physical Electrostatic Interactions. Chem Res Chin Univ 2018. [DOI: 10.1007/s40242-018-7375-z] [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]
|
13
|
|
14
|
Wang D, Wang Y, Wan H, Wang J, Wang L. Synthesis of gemini basic ionic liquids and their application in anion exchange membranes. RSC Adv 2018; 8:10185-10196. [PMID: 35540491 PMCID: PMC9078857 DOI: 10.1039/c8ra00594j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Accepted: 03/08/2018] [Indexed: 12/16/2022] Open
Abstract
A gemini-type basic morpholine ionic liquid ([Nbmd][OH]) was synthesized via a two-step method with morpholine, bromododecane and 1,4-dibromobutane as raw materials, and its structure was characterized by 1H NMR and FT-IR spectroscopy. Meanwhile, a series of anion exchange membranes ([Nbmd][OH] x -QCS) were prepared with quaternized chitosan (QCS) as the polymer matrix and [Nbmd][OH] as the dopant owing to its strong alkalinity and good solubility. The structures of the [Nbmd][OH] x -QCS composite membranes were characterized in detail by FT-IR spectroscopy, the OH- conductivity by AC impedance spectroscopy, and the morphological features by scanning electron microscopy (SEM), thermal gravity analysis (TGA), etc. The results show that the [Nbmd][OH] x -QCS composite membranes have uniform surfaces and cross-section morphology. Increasing the content of [Nbmd][OH] not only enhances the thermal stability but also increases the OH- conductivity; the thermal decomposition temperature of the [Nbmd][OH]40-QCS membrane is nearly 20 °C higher than that of the pristine QCS membrane, and the maximum OH- conductivity is approximately 1.37 × 10-2 S cm-2 at 70 °C. The methanol permeability of the [Nbmd][OH]40-QCS membrane in 1 M methanol at room temperature is 2.21 × 10-6 cm-2 s-1, which is lower than that of Nafion®115, indicating a promising potential use in alkaline direct methanol fuel cells. Moreover, the [Nbmd][OH]40-QCS membrane exhibits the best alkaline stability of all the membranes prepared in this work, retaining approximately 81% of its initial conductivity after immersion in 3 M KOH solution for 120 h at 70 °C.
Collapse
Affiliation(s)
- Dan Wang
- School of Petroleum and Chemical Technology, College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University Fushun 113001 China
| | - Yifu Wang
- School of Petroleum and Chemical Technology, College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University Fushun 113001 China
| | - Heting Wan
- School of Petroleum and Chemical Technology, College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University Fushun 113001 China
| | - Jilin Wang
- School of Petroleum and Chemical Technology, College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University Fushun 113001 China
| | - Lulu Wang
- School of Petroleum and Chemical Technology, College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University Fushun 113001 China
| |
Collapse
|
15
|
Picchio ML, Paredes AJ, Palma SD, Passeggi MC, Gugliotta LM, Minari RJ, Igarzabal CIA. pH-responsive casein-based films and their application as functional coatings in solid dosage formulations. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.01.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
16
|
Orakdogen N, Boyaci T. Quantitative analysis on compressional behavior and swelling kinetics modeling of weakly ionic poly(N,N-dimethylacrylamide-co-acrylic/methacrylic acid or sodium acrylate) gels. Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4196-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
17
|
Sun H, Chen J, Han X, Liu H. Multi-responsive hydrogels with UCST- and LCST-induced shrinking and controlled release behaviors of rhodamine B. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 82:284-290. [PMID: 29025659 DOI: 10.1016/j.msec.2017.08.067] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 08/13/2017] [Accepted: 08/16/2017] [Indexed: 11/18/2022]
Abstract
By using a disulfide-functionalized crosslinker, a pH- and thermo-responsive 2-(dimethylamino) ethyl methacrylate (DMAEMA) monomer and a zwitterionic sulfobetaine methacrylate (SBMA) monomer were conjugated to fabricate a multi-responsive P(DMAEMA-SS-SBMA) copolymeric hydrogel. Apparent UCST and LCST volume transitions were observed in the P(DMAEMA-SS-SBMA) hydrogels with equivalent weight fractions of monomers. Different pore size and response sensitivity of shrunken structures below UCST and above LCST were visualized by SEM images. The hydrogel exhibited a highly swollen state with a swelling ratio of 17.8 and a pore size of 106μm at 45°C, they deswelled unequally at 5°C with a compact surface with pore size of 30μm and a loose bulk with pore size of 83μm, while they deswelled uniformly at 65°C with dense shrunken structure with small pore size of 12μm. The dual-thermoresponsive hydrogel was promising in controlled drug release. The initial drug release was predominantly controlled by diffusion, and the long-term release was influenced by the swelling ratio. Below UCST, the relatively hydrophilic shrunken structure and slow diffusion had a synergistic effect on the sustained release. Above LCST, the fast diffusion and the rapid "off" effect of hydrophobic skin layer resulted in a burst release. Additionally, pH-tunable swelling and redox-sensitive degradation were also observed.
Collapse
Affiliation(s)
- Hui Sun
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Jing Chen
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Xia Han
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
| | - Honglai Liu
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| |
Collapse
|
18
|
Characterization and swelling–deswelling properties of wheat straw cellulose based semi-IPNs hydrogel. Carbohydr Polym 2014; 107:232-40. [DOI: 10.1016/j.carbpol.2014.02.073] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2012] [Revised: 09/16/2013] [Accepted: 02/22/2014] [Indexed: 11/22/2022]
|
19
|
Qi X, Liu M, Chen Z. Study on swelling behavior of poly(sodium acrylate-co
-2-acryloylamino-2-methyl-1-propanesulfonic acid)/attapulgite macroporous superabsorbent composite. POLYM ENG SCI 2014. [DOI: 10.1002/pen.23938] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xiaohua Qi
- Department of Chemistry; School of Sciences; Chongqing Jiaotong University; Chongqing 400074 People's Republic of China
- Department of Chemistry; State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 People's Republic of China
| | - Mingzhu Liu
- Department of Chemistry; State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 People's Republic of China
| | - Zhenbin Chen
- Department of Chemistry; State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 People's Republic of China
- College of Materials Science and Engineering; State Key Laboratory of Gansu Advanced Non-Ferrous Metal Materials; Lanzhou University of Technology; Lanzhou 730050 People's Republic of China
| |
Collapse
|
20
|
Li Q, Ma Z, Yue Q, Gao B, Li W, Xu X. Synthesis, characterization and swelling behavior of superabsorbent wheat straw graft copolymers. BIORESOURCE TECHNOLOGY 2012; 118:204-9. [PMID: 22705525 DOI: 10.1016/j.biortech.2012.03.028] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Revised: 02/18/2012] [Accepted: 03/08/2012] [Indexed: 05/21/2023]
Abstract
Swelling behavior is an important characteristic for superabsorbents. A wheat straw-based superabsorbent (WS-SAB) was prepared by graft copolymerization of acrylic acid, acrylic amide and dimethyl diallyl ammonium chloride onto the cellulose of wheat straw, and its swelling and deswelling behavior was investigated. The product had a water absorbency of 133.76 g/g in distilled water and 33.83 g/g in 0.9 wt.% NaCl solution. Fourier transform infrared spectroscopy and scanning electron microscopy indicated that the monomers were successfully grafted onto the wheat straw. The largest swelling capacity was at pH 6. The effect of ions on the swelling was in the order: Na(+)>K(+)>Mg(2+)>Ca(2+) and Cl(-)>SO(4)(2-). The swelling capacity did not change after several times of water absorption and release.
Collapse
Affiliation(s)
- Qian Li
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, 250100 Jinan, PR China
| | | | | | | | | | | |
Collapse
|
21
|
|
22
|
Synthesis, characterization, and swelling behavior of new pH-sensitive hydrogels derived from copolymers of 2-hydroxyethyl methacrylate and 2-(diisopropylamino)ethylmethacrylate. J Appl Polym Sci 2012. [DOI: 10.1002/app.37576] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
23
|
Bhattacharya SS, Sen KK, Sen SO, Banerjee S, Kaity S, Ghosh AK, Ghosh A. Synthesis and Characterization of Poly(acrylic acid)/modified Bentonite Superabsorbent Polymer. INT J POLYM MATER PO 2011. [DOI: 10.1080/00914037.2011.557807] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
|
24
|
Li C, Xu L, Zhai M, Peng J, Li J. Overshooting effect of poly(dimethylaminoethyl methacrylate) hydrogels. J Appl Polym Sci 2010. [DOI: 10.1002/app.33328] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
25
|
Wang W, Zhai N, Wang A. Preparation and swelling characteristics of a superabsorbent nanocomposite based on natural guar gum and cation-modified vermiculite. J Appl Polym Sci 2010. [DOI: 10.1002/app.33083] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
|
26
|
Nanocomposite of carboxymethyl cellulose and attapulgite as a novel pH-sensitive superabsorbent: Synthesis, characterization and properties. Carbohydr Polym 2010. [DOI: 10.1016/j.carbpol.2010.04.026] [Citation(s) in RCA: 162] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
27
|
Wang J, Wang W, Wang A. Synthesis, characterization and swelling behaviors of hydroxyethyl cellulose-g
-poly(acrylic acid)/attapulgite superabsorbent composite. POLYM ENG SCI 2010. [DOI: 10.1002/pen.21500] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
28
|
Yao B, Chen ZW, Ni C, Ni ZB, Liu XY, Chen MQ. Studies on syntheses and dynamic swelling of pH-sensitive macroporous poly(N-isopropylacrylamide-co-acrylic acid) hydrogels. POLYMER SCIENCE SERIES A 2010. [DOI: 10.1134/s0965545x10010037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
29
|
Kalagasidis Krušić M, Veličković SJ, Griffiths PC, Filipović J. Poly[(N
-isopropylacrylamide)-co
-(itaconic acid)] hydrogels with poly(ethylene glycol). POLYM INT 2009. [DOI: 10.1002/pi.2717] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
30
|
Yin Y, Lv X, Tu H, Xu S, Zheng H. Preparation and swelling kinetics of pH-sensitive photocrosslinked hydrogel based on carboxymethyl chitosan. JOURNAL OF POLYMER RESEARCH 2009. [DOI: 10.1007/s10965-009-9333-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
31
|
Quijada-Garrido I, Prior-Cabanillas A, París R, Frutos G, Barrales-Rienda JM. Water Transport Properties of pH-Responsive Hydrogels Based on Poly(methacrylic acid) with Polyether Side Chains by Magnetic Resonance Imaging. MACROMOL CHEM PHYS 2009. [DOI: 10.1002/macp.200800592] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
32
|
París R, Quijada-Garrido I. Swelling and hydrolytic degradation behaviour of pH-responsive hydrogels of poly[(N-isopropylacrylamide)-co-(methacrylic acid)] crosslinked by biodegradable polycaprolactone chains. POLYM INT 2009. [DOI: 10.1002/pi.2539] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
33
|
París R, Barrales-Rienda JM, Quijada-Garrido I. Dynamic swelling of hydrogels based on random terpolymers of N-isopropylacrylamide, methacrylic acid and poly(ethylene glycol) macromonomer. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.02.028] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
34
|
Synthesis, characterization and swelling behaviors of sodium alginate-g-poly(acrylic acid)/sodium humate superabsorbent. Carbohydr Polym 2009. [DOI: 10.1016/j.carbpol.2008.06.013] [Citation(s) in RCA: 134] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
35
|
Becerra N, Restrepo LM, López BL. Synthesis and Characterization of a Biocompatible Copolymer to be Used as Cell Culture Support. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/masy.200751204] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
36
|
Prior-Cabanillas A, Barrales-Rienda JM, Frutos G, Quijada-Garrido I. Swelling behaviour of hydrogels from methacrylic acid and poly(ethylene glycol) side chains by magnetic resonance imaging. POLYM INT 2007. [DOI: 10.1002/pi.2144] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
37
|
Notley SM, Norgren M. Measurement of interaction forces between lignin and cellulose as a function of aqueous electrolyte solution conditions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2006; 22:11199-204. [PMID: 17154603 DOI: 10.1021/la0618566] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The interaction between a lignin film and a cellulose sphere has been measured using the colloidal probe force technique as a function of aqueous electrolyte solution conditions. The lignin film was first studied for its roughness and stability using atomic force microscopy imaging and quartz crystal microbalance measurements, respectively. The film was found to be smooth and stable in the pH range of 3.5-9 and in ionic strengths up to and including 0.01 M. This range of ionic strength and pH was hence used to measure the surface force profiles between lignin and cellulose. Under these solution conditions, the measured forces behaved according to DLVO theory. The force-distance curves could be fitted between the limits of constant charge and constant potential, and the surface potential of the lignin films was determined as a function of pH. At a pH greater than 9.5, a short range steric repulsion was observed, indicating that the film was swelling to a large extent but did not dissolve. Thus, lignin films prepared in this manner are suitable for a range of surface force studies.
Collapse
Affiliation(s)
- Shannon M Notley
- Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Australian National University, Canberra 0200 ACT, Australia.
| | | |
Collapse
|
38
|
Wan LS, Xu ZK, Jiang HL. Fibrous Membranes Electrospinning from Acrylonitrile-Based Polymers: Specific Absorption Behaviors and States of Water. Macromol Biosci 2006; 6:364-72. [PMID: 16680807 DOI: 10.1002/mabi.200600017] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Fibrous membranes with a fiber diameter ranging from 80 to 800 nm are prepared from polyacrylonitrile and poly[acrylonitrile-co-(N-vinyl-2-pyrrolidone)] by the electrospinning process. The parameters can be controlled to fabricate fibrous membranes with similar fiber diameters (between 600 and 800 nm) for further studies on the swelling behaviors and water states. Water swelling experiments indicate that the fibrous membrane has a great capacity for water sorption, which reaches a maximum in a few minutes because of its extremely high porosity. Furthermore, a remarkable overshoot occurs as a result of polymer chain relaxation and the non-compact structure of the fibrous membranes. Contrary to the dense membrane, the equilibrium water content in the fibrous membrane decreases with the content of hydrophilic NVP though the maximum is almost the same. Results from DSC experiments demonstrate that only non-freezable bound water and free water can be distinguished in the fibrous membrane. On the basis of the results of water swelling and DSC experiments, it is concluded that the specific behaviors of the fibrous membranes are induced by the non-compact and pore-fiber discontinuous structure, which is different from either dense membranes or hydrogels. [GRAPHS: SEE TEXT] DSC curves of fully swollen electrospun fibrous membranes and of fully swollen dense membranes with different NVP contents.
Collapse
Affiliation(s)
- Ling-Shu Wan
- Institute of Polymer Science, and Key Laboratory of Macromolecule Synthesis and Functionalization (Ministry of Education), Zhejiang University, Hangzhou 310027, P. R. China
| | | | | |
Collapse
|
39
|
|
40
|
Jin X, Hsieh YL. Anisotropic Dimensional Swelling of Membranes of Ultrafine Hydrogel Fibers. MACROMOL CHEM PHYS 2005. [DOI: 10.1002/macp.200500183] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
41
|
Jin X, Hsieh YL. pH-responsive swelling behavior of poly(vinyl alcohol)/poly(acrylic acid) bi-component fibrous hydrogel membranes. POLYMER 2005. [DOI: 10.1016/j.polymer.2005.04.066] [Citation(s) in RCA: 160] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
42
|
Prior-Cabanillas A, Quijada-Garrido I, Frutos G, Barrales-Rienda J. Influence of the swelling history on the swelling kinetics of stimuli-responsive poly[(N-isopropylacrylamide)-co-(methacrylic acid)] hydrogels. POLYMER 2005. [DOI: 10.1016/j.polymer.2004.11.088] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
43
|
Pastoriza A, Pacios IE, Piérola IF. Kinetics of solvent responsiveness in poly(N,N-dimethylacrylamide) hydrogels of different morphology. POLYM INT 2005. [DOI: 10.1002/pi.1832] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
44
|
Molina MJ, Gómez-Antón MR, Piérola IF. Factors driving the protonation of poly(N-vinylimidazole) hydrogels. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/polb.20104] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
45
|
Díez-Peña E, Quijada-Garrido I, Barrales-Rienda JM, Schnell I, Spiess HW. Advanced 1
H Solid-State NMR Spectroscopy on Hydrogels, 2. MACROMOL CHEM PHYS 2004. [DOI: 10.1002/macp.200300074] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
46
|
Notley SM, Biggs S, Craig VSJ, Wågberg L. Adsorbed layer structure of a weak polyelectrolyte studied by colloidal probe microscopy and QCM-D as a function of pH and ionic strength. Phys Chem Chem Phys 2004. [DOI: 10.1039/b401376j] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|