1
|
Jiang S, Wang W, Ke J, Huang S, Wang J, Luo C, Li X, Zhang K, Liu H, Zheng W, Zhang J, Peng C. A mechanically tough and ultra-swellable microneedle for acute gout arthritis. Biomater Sci 2023; 11:1714-1724. [PMID: 36629000 DOI: 10.1039/d2bm01937j] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Acute gout arthritis (AGA) remains the fundamental research focus in the entire medical field. Hydrogel microneedles (HMNs) loaded with therapeutic molecules such as colchicine (Col) have been developed as a new tool for the management of AGA in a minimally invasive manner. However, the incompatible mechanical and swelling properties of HMNs limited the diffusion of the drug from the HMN system, which remains a challenge for practical use. Here, a mechanically tough (11.53 N per needle) and super-swelling (2708%) hydrogel microneedle (HMNs) composed of a uniform network structure was developed using a UV-responsive crosslinker through in situ photopolymerization for percutaneous delivery of Col. Such HMNs and Col loaded HMNs (Col-HMNs) present excellent biocompatibility. Moreover, Col-HMNs present considerable anti-inflammatory effects in vivo through down-regulated inflammatory responses such as related cytokines IL-1β, IL-6, and TNF-α. These results demonstrated that the mechanically tough and super-swelling HMNs could be a promising tool for effective Col delivery to relieve AGA.
Collapse
Affiliation(s)
- Suping Jiang
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui, 230012, China.
| | - Wen Wang
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui, 230012, China.
| | - Jiming Ke
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui, 230012, China.
| | - Shan Huang
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui, 230012, China.
| | - Jie Wang
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui, 230012, China.
| | - Chengxi Luo
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui, 230012, China.
| | - Xiaoxia Li
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui, 230012, China.
| | - Kaili Zhang
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui, 230012, China.
| | - Huanhuan Liu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui, 230012, China. .,Anhui Province Key Laboratory of Pharmaceutical Preparation Technology and Application, Heifei, Anhui, 230012, China.,Engineering Technology Research Center of Modernized Pharmaceutics, Anhui Education Department (AUCM), Hefei 230012, China.,Institute of Pharmaceutics, Anhui Academy of Chinese Medicine, Hefei 230012, China
| | - Wensheng Zheng
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui, 230012, China. .,Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China
| | - Jiwen Zhang
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui, 230012, China. .,Center for Drug Delivery System, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Can Peng
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui, 230012, China. .,Anhui Province Key Laboratory of Pharmaceutical Preparation Technology and Application, Heifei, Anhui, 230012, China.,Anhui Province Key Laboratory of Chinese Medicinal Formula, Hefei, Anhui, 230012, China.,Institute of TCM Resources Protection and Development, Anhui Academy of Chinese Medicine, Hefei, Anhui, 230012, China.
| |
Collapse
|
2
|
Yanagie M, Kaneko Y. Preparation of irrefrangible polyacrylamide hybrid hydrogels using water-dispersible cyclotetrasiloxane or polyhedral oligomeric silsesquioxane containing polymerizable groups as cross-linkers. Polym Chem 2018. [DOI: 10.1039/c8py00354h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Irrefrangible polyacrylamide hybrid hydrogels were prepared using polymerizable siloxane oligomers as cross-linkers (CyTS-MNa and POSS-MNa, respectively).
Collapse
Affiliation(s)
- Makoto Yanagie
- Graduate School of Science and Engineering
- Kagoshima University
- Kagoshima 890-0065
- Japan
| | - Yoshiro Kaneko
- Graduate School of Science and Engineering
- Kagoshima University
- Kagoshima 890-0065
- Japan
| |
Collapse
|
3
|
Drozdov A, deClaville Christiansen J. A simplified model for equilibrium and transient swelling of thermo-responsive gels. J Mech Behav Biomed Mater 2017; 75:20-32. [DOI: 10.1016/j.jmbbm.2017.06.034] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 06/26/2017] [Indexed: 11/25/2022]
|
4
|
Anomaly in the coefficient of performance of the volume phase transition process of poly(N-isopropylacrylamide) gels induced by mechanical stress. Polym J 2016. [DOI: 10.1038/pj.2016.17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
5
|
Yu R, Zheng S. Poly(acrylic acid)-grafted poly(N-isopropyl acrylamide) networks: preparation, characterization and hydrogel behavior. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2016; 22:2305-24. [PMID: 21092421 DOI: 10.1163/092050610x538722] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Poly(acrylic acid)-grafted poly(N-isopropylacrylamide) co-polymer networks (PNIPAAm-g-PAA) were prepared via the reversible addition-fragmentation transfer (RAFT) polymerization of N-isopropyl- acrylamide (NIPAAm) with trithiocarbonate-terminated PAA as a macromolecular chain-transfer agent in the presence of N,N-methylenebisacrylamide. The PNIPAAm-g-PAA co-polymer networks were characterized by means of Fourier transform infrared spectroscopy, differential scanning calorimetry and small-angle X-ray scattering. It is found that the PNIPAAm-g-PAA co-polymer networks were microphase-separated, in which the microdomains of PNIPAAm-PAA interpolymer complexes were dispersed into the PNIPAAm matrix. The PNIPAAm-g-PAA hydrogels displayed a dual response to temperature and pH values. The thermoresponsive properties of PNIPAAm-g-PAA networks were investigated. Below the volume phase transition temperatures, the PNIPAAm-g-PAA hydrogels possessed much higher swelling ratios than control PNIPAAm hydrogel. In terms of swelling, deswelling and reswelling tests, it is judged that the PNIPAAm-g-PAA hydrogels displayed faster response to the external temperature changes than control PNIPAAm hydrogel. The improved thermoresponsive properties of hydrogels are ascribed to the formation of PAA-grafted PNIPAAm networks, in which the water-soluble PAA chains behave as the hydrophiphilic tunnels and allow water molecules to go through and, thus, to accelerate the diffusion of water molecules.
Collapse
Affiliation(s)
- Rentong Yu
- a Department of Polymer Science and Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | | |
Collapse
|
6
|
|
7
|
|
8
|
Drozdov AD. Swelling of thermo-responsive hydrogels. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2014; 37:93. [PMID: 25326783 DOI: 10.1140/epje/i2014-14093-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 09/10/2014] [Accepted: 09/17/2014] [Indexed: 06/04/2023]
Abstract
A model is developed for the elastic response and solvent diffusion through a thermo-responsive gel under an arbitrary deformation with finite strains. The constitutive equations involve the stress-strain relation, the nonlinear diffusion equation for solvent molecules, the heat conduction equation, and the Allen-Cahn equation for an order parameter (proportional to the concentration of hydrophilic segments in polymer chains). Material constants are found by fitting swelling diagrams for PNIPA gels under uniaxial tension. Numerical analysis demonstrates good agreement between predictions of the model and observations in tests with stress- and strain-controlled programs.
Collapse
Affiliation(s)
- A D Drozdov
- Center for Plastics Technology, Danish Technological Institute, Gregersensvej 7, 2630, Taastrup, Denmark,
| |
Collapse
|
9
|
Haraguchi K. Soft Nanohybrid Materials Consisting of Polymer–Clay Networks. ORGANIC-INORGANIC HYBRID NANOMATERIALS 2014. [DOI: 10.1007/12_2014_287] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
10
|
Chen Y, Xiong Y, Peng C, Liu W, Peng Y, Xu W. Synthesis and characterization of polyhedral oligomeric silsesquioxane hybrid co-crosslinked poly(N
-isopropylacrylamide-co
-dimethylaminoethyl methacrylate) hydrogels. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/polb.23360] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yi Chen
- Institute of Polymer Research, College of Chemistry and Chemical Engineering, Hunan University; Changsha 410082 People's Republic of China
- Key Laboratory of Advanced Materials and Technology for Packaging, Hunan University of Technology; Zhuzhou 421007 People's Republic of China
| | - Yuanqin Xiong
- Institute of Polymer Research, College of Chemistry and Chemical Engineering, Hunan University; Changsha 410082 People's Republic of China
| | - Chang Peng
- Institute of Polymer Research, College of Chemistry and Chemical Engineering, Hunan University; Changsha 410082 People's Republic of China
| | - Wenyong Liu
- Key Laboratory of Advanced Materials and Technology for Packaging, Hunan University of Technology; Zhuzhou 421007 People's Republic of China
| | - Yue Peng
- Key Laboratory of Advanced Materials and Technology for Packaging, Hunan University of Technology; Zhuzhou 421007 People's Republic of China
| | - Weijian Xu
- Institute of Polymer Research, College of Chemistry and Chemical Engineering, Hunan University; Changsha 410082 People's Republic of China
| |
Collapse
|
11
|
Ashraful Alam M, Takafuji M, Ihara H. Thermosensitive hybrid hydrogels with silica nanoparticle-cross-linked polymer networks. J Colloid Interface Sci 2013; 405:109-17. [PMID: 23746681 DOI: 10.1016/j.jcis.2013.04.054] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Revised: 04/26/2013] [Accepted: 04/29/2013] [Indexed: 11/17/2022]
Abstract
A simple methodology for the preparation of thermosensitive organic-inorganic hybrid hydrogels using silica nanoparticle-mediated polymer networks is described. A thermosensitive copolymer poly[N-isopropylacrylamide-co-(3-methacryloxypropyltrimethoxysilane)], (pNS), with reactive side chains (Si-O-CH3) was first synthesized by free radical polymerization using N-isopropylacrylamide (NIPAAm) and 3-methacryloxypropyltrimethoxysilane (MAPTS). Then, simple mixing of the aqueous solution of this copolymer with silica nanoparticle (SiP) suspensions at room temperature led to the formation of thermosensitive hybrid hydrogels cross-linked with silica nanoparticles (SiP) which did not require any other processing like washing for the removal of unreacted monomers and initiators. The effects of SiP content on gelation abilities, temperature-responsive behaviors, swelling and deswelling kinetics, and mechanical properties of the hydrogels were investigated. The results showed that transparent hybrid hydrogels with adjustable network structures were obtained within a few minutes to a couple of hours depending on the concentration of the copolymers and the silica nanoparticles. The hybrid hydrogels exhibited a lower critical solution temperature (LCST) of around 33 °C with no significant deviation from conventional poly(N-isopropylacrylamide) hydrogels; the LCST was not significantly affected by the concentration of silica nanoparticles (which in these systems serve as the cross-linkers). In addition, the hydrogels showed significantly large equilibrium swelling ratios, improved mechanical strength, and suitable deswelling behavior, which can easily be tuned by varying the composition of the hybrid hydrogels.
Collapse
Affiliation(s)
- Md Ashraful Alam
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1, Kurokami, Kumamoto 860-8555, Japan.
| | | | | |
Collapse
|
12
|
Renò F, Carniato F, Rizzi M, Marchese L, Laus M, Antonioli D. POSS/gelatin-polyglutamic acid hydrogel composites: Preparation, biological and mechanical characterization. J Appl Polym Sci 2012. [DOI: 10.1002/app.38789] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
|
13
|
Zheng Y, Zheng S. Poly(ethylene oxide)-grafted poly(N-isopropylacrylamide) networks: Preparation, characterization and rapid deswelling and reswelling behavior of hydrogels. REACT FUNCT POLYM 2012. [DOI: 10.1016/j.reactfunctpolym.2011.12.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
14
|
Haraguchi K, Xu Y, Li G. Poly(N-isopropylacrylamide) Prepared by Free-Radical Polymerization in Aqueous Solutions and in Nanocomposite Hydrogels. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.201000149] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
15
|
Wang L, Zeng K, Zheng S. Hepta(3,3,3-trifluoropropyl) polyhedral oligomeric silsesquioxane-capped poly(N-isopropylacrylamide) telechelics: synthesis and behavior of physical hydrogels. ACS APPLIED MATERIALS & INTERFACES 2011; 3:898-909. [PMID: 21381657 DOI: 10.1021/am101258k] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Hepta(3,3,3-trifluoropropyl) polyhedral oligomeric silsesquioxane (POSS)-capped poly(N-isopropylacrylamide) (PNIPAAm) telechelics with variable lengths of PNIPAAm midblocks were synthesized by the combination of reversible addition-fragmentation chain transfer polymerization (RAFT) and the copper-catalyzed Huisgen 1,3-cycloaddition (i.e., click chemistry). The POSS-capped trithiocarbonate was synthesized and used as the chain transfer agent for the RAFT polymerization of N-isopropylacrylamide. The organic-inorganic amphiphilic telechelics were characterized by means of nuclear magnetic resonance spectroscopy (NMR) and gel permeation chromatography (GPC). Atomic force microscopy (AFM) shows that all the POSS-capped PNIPAAm telechelics exhibited microphase-separated morphologies, in which the POSS terminal groups were self-assembled into the microdomains and dispersed into the continuous PNIPAAm matrices. The POSS nanodomains could behave as the physical cross-linking sites and as a result the physical hydrogels were formed while these POSS-capped PNIPAAm telechelics were subjected to the solubility tests with water. These physical hydrogels possessed well-defined volume phase transition phenomena and displayed rapid reswelling and deswelling thermoresponsive behavior compared to control PNIPAAm hydrogel.
Collapse
Affiliation(s)
- Lei Wang
- Department of Polymer Science and Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | | | | |
Collapse
|
16
|
|
17
|
Hou C, Zhang Q, Wang H, Li Y. Functionalization of PNIPAAm microgels using magnetic graphene and their application in microreactors as switch materials. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm11086a] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
18
|
Yi F, Zheng S. Effect of hydrophobic polystyrene microphases on temperature-responsive behavior of poly(N-isopropylacrylamide) hydrogels. POLYMER 2009. [DOI: 10.1016/j.polymer.2008.11.038] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
19
|
Ma J, Zhang L, Fan B, Xu Y, Liang B. A novel sodium carboxymethylcellulose/poly(N‐isopropylacrylamide)/Clay semi‐IPN nanocomposite hydrogel with improved response rate and mechanical properties. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/polb.21490] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
20
|
Liang S, Wu J, Tian H, Zhang L, Xu J. High-strength cellulose/poly(ethylene glycol) gels. CHEMSUSCHEM 2008; 1:558-563. [PMID: 18702155 DOI: 10.1002/cssc.200800003] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Cellulose gel membranes have been prepared by a pre-gelation method employing cellulose solutions in aqueous NaOH-thiourea obtained at low temperature. The cellulose gels were then swollen by low-molecular-weight polyethylene glycol (PEG; MW<1000 g mol(-1)), and the morphology, structure and mechanical properties of the cellulose/PEG gels were studied by various techniques. The gels exhibit high mechanical performance, and the tensile strength of the gel membranes increases sharply with an increase in the molecular weight of PEG from 200 to 800 g mol(-1). Moreover, their elongation at break remains stable at 100 %. PEG800 efficiently improves the optical transmittance of the gel membranes at ambient temperature, which is about five times greater than that of a normal cellulose hydrogel membrane. A strong hydrogen-bonding interaction occurs between PEG and cellulose leading to a homogeneous structure, high mechanical strength and good transparency of the gel membranes.
Collapse
Affiliation(s)
- Songmiao Liang
- Department of Chemistry, Wuhan University, Wuhan, P.R. China
| | | | | | | | | |
Collapse
|
21
|
Haraguchi K, Li HJ, Song L, Murata K. Tunable Optical and Swelling/Deswelling Properties Associated with Control of the Coil-to-Globule Transition of Poly(N-isopropylacrylamide) in Polymer−Clay Nanocomposite Gels. Macromolecules 2007. [DOI: 10.1021/ma071348i] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kazutoshi Haraguchi
- Material Chemistry Laboratory, Kawamura Institute of Chemical Research, 631 Sakado, Sakura, Chiba 285-0078, Japan, and College of Material Science and Engineering, Donghua University, Shanghai 200051, China
| | - Huan-Jun Li
- Material Chemistry Laboratory, Kawamura Institute of Chemical Research, 631 Sakado, Sakura, Chiba 285-0078, Japan, and College of Material Science and Engineering, Donghua University, Shanghai 200051, China
| | - Liyuan Song
- Material Chemistry Laboratory, Kawamura Institute of Chemical Research, 631 Sakado, Sakura, Chiba 285-0078, Japan, and College of Material Science and Engineering, Donghua University, Shanghai 200051, China
| | - Kazutaka Murata
- Material Chemistry Laboratory, Kawamura Institute of Chemical Research, 631 Sakado, Sakura, Chiba 285-0078, Japan, and College of Material Science and Engineering, Donghua University, Shanghai 200051, China
| |
Collapse
|
22
|
Haraguchi K, Song L. Microstructures Formed in Co-Cross-Linked Networks and Their Relationships to the Optical and Mechanical Properties of PNIPA/Clay Nanocomposite Gels. Macromolecules 2007. [DOI: 10.1021/ma070695p] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kazutoshi Haraguchi
- Material Chemistry Laboratory, Kawamura Institute of Chemical Research, 631 Sakado, Sakura, Chiba 285-0078, Japan, and College of Material Science & Engineering, Donghua University, Shanghai 200051, China
| | - Liyuan Song
- Material Chemistry Laboratory, Kawamura Institute of Chemical Research, 631 Sakado, Sakura, Chiba 285-0078, Japan, and College of Material Science & Engineering, Donghua University, Shanghai 200051, China
| |
Collapse
|
23
|
Mu J, Zheng S. Poly(N-isopropylacrylamide) nanocrosslinked by polyhedral oligomeric silsesquioxane: Temperature-responsive behavior of hydrogels. J Colloid Interface Sci 2007; 307:377-85. [PMID: 17196603 DOI: 10.1016/j.jcis.2006.12.014] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2006] [Revised: 12/01/2006] [Accepted: 12/04/2006] [Indexed: 11/25/2022]
Abstract
Octa(propylglycidyl ether) polyhedral oligomeric silsesquioxane (OpePOSS) was used as a nanocrosslinking agent to prepare the crosslinked poly(N-isopropylacrylamide) (PNIPAM) networks with POSS content up to 50 wt%. The inter-component crosslinking was achieved via the reaction between NH moieties in amide group of PNIPAM and epoxide groups of OpePOSS. When the organic-inorganic nanocomposites were swollen in water the POSS-crosslinked PNIPAM exhibited the characteristics of hydrogels. With the moderate contents of POSS, the POSS-containing hybrid hydrogels displayed much faster response rates in swelling, deswelling and reswelling experiments than the PNIPAM hydrogels prepared via the free radical copolymerization of N-isopropylacrylamide (NIPAM) and N,N(')-methylenebisacrylamide (viz. the conventional crosslinker). The improved hydrogel properties have been interpreted on the basis of the formation of the nanosized hydrophobic microdomains around the POSS moieties (i.e., the nanocrosslinking sites).
Collapse
Affiliation(s)
- Jiangfeng Mu
- Department of Polymer Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | | |
Collapse
|
24
|
Ma J, Xu Y, Zhang Q, Zha L, Liang B. Preparation and characterization of pH- and temperature-responsive semi-IPN hydrogels of carboxymethyl chitosan with poly (N-isopropyl acrylamide) crosslinked by clay. Colloid Polym Sci 2006. [DOI: 10.1007/s00396-006-1581-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
25
|
Haraguchi K, Takada T. Characteristic Sliding Frictional Behavior on the Surface of Nanocomposite Hydrogels Consisting of Organic-Inorganic Network Structure. MACROMOL CHEM PHYS 2005. [DOI: 10.1002/macp.200500105] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
26
|
Synthesis and properties of starch grafted poly[acrylamide-co-(acrylic acid)]/montmorillonite nanosuperabsorbent via ?-ray irradiation technique. J Appl Polym Sci 2005. [DOI: 10.1002/app.21447] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
27
|
Haraguchi K, Farnworth R, Ohbayashi A, Takehisa T. Compositional Effects on Mechanical Properties of Nanocomposite Hydrogels Composed of Poly(N,N-dimethylacrylamide) and Clay. Macromolecules 2003. [DOI: 10.1021/ma034366i] [Citation(s) in RCA: 431] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
28
|
Haraguchi K, Takehisa T, Fan S. Effects of Clay Content on the Properties of Nanocomposite Hydrogels Composed of Poly(N-isopropylacrylamide) and Clay. Macromolecules 2002. [DOI: 10.1021/ma021301r] [Citation(s) in RCA: 635] [Impact Index Per Article: 28.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kazutoshi Haraguchi
- Material Chemistry Laboratory, Kawamura Institute of Chemical Research, 631 Sakado, Sakura, Chiba, 285-0078, Japan
| | - Toru Takehisa
- Material Chemistry Laboratory, Kawamura Institute of Chemical Research, 631 Sakado, Sakura, Chiba, 285-0078, Japan
| | - Simon Fan
- Material Chemistry Laboratory, Kawamura Institute of Chemical Research, 631 Sakado, Sakura, Chiba, 285-0078, Japan
| |
Collapse
|
29
|
Takigawa T, Takakura Y, Masuda T. Volume Phase Transition of a Poly(N-isopropylacrylamide) Gel under Tension. Emergence of a New Critical Point. Polym J 2001. [DOI: 10.1295/polymj.33.909] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
30
|
Ikehata A, Takano M, Ushiki H. Equilibrium Volume Change and Elastic Properties of Poly(N-isopropylacrylamide) Gels Containing Latex Particles. Polym J 2001. [DOI: 10.1295/polymj.33.554] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
31
|
Takigawa T, Takahashi K, Araki H, Nakamura M, Masuda T. Transition Enthalpy for a Poly(N-isopropylacrylamide) Based Polymer Gel Estimated from the Clapeyron Equation. Polym J 2001. [DOI: 10.1295/polymj.33.297] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|