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P(HMA-co-ATU) hydrogel synthesis via gamma radiation and its use for in situ metal nanoparticle preparation and as catalyst in 4-nitrophenol reduction. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2022.110217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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2
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Zhu Y, Zhang M, Wei S, Wang B, He J, Qiu X. Temperature-responsive P(NIPAM-co-NHMA)-grafted organic-inorganic hybrid hollow mesoporous silica nanoparticles for controlled drug delivery. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103197] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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3
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Bravi Costantino ML, Oberti TG, Cortizo AM, Cortizo MS. Thermoresponsive behavior of scaffolds based on fumarate- N-isopropylacrylamide copolymers for potential biomedical applications. INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2021.1931206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- M. Leticia Bravi Costantino
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata – CONICET CCT-La Plata, C.C., La Plata, Argentina
| | - Tamara G. Oberti
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata – CONICET CCT-La Plata, C.C., La Plata, Argentina
| | - Ana M. Cortizo
- Departamento de Cs. Biológicas, Facultad de Cs. Exactas, Laboratorio de Investigaciones en Osteopatías y Metabolismo Mineral (LIOMM), UNLP, La Plata, Argentina
| | - M. Susana Cortizo
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata – CONICET CCT-La Plata, C.C., La Plata, Argentina
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4
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Karmakar M, Mondal H, Ghosh NN, Chattopadhyay PK, Singha NR. Synthesis of gum tragacanth-grafted pentapolymer hydrogels for As(III) exclusion: Roles of microwaves, RSM optimization, and DFT studies. Int J Biol Macromol 2021; 184:909-925. [PMID: 34144070 DOI: 10.1016/j.ijbiomac.2021.06.070] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 06/08/2021] [Accepted: 06/10/2021] [Indexed: 11/25/2022]
Abstract
Microwave assisted homogeneous heating, selectivity in radical formation, and the faster polymerization facilitate the synthesis, structures, properties, and the higher branching associated stability of multifunctional multipolymers. Thus, the optimum gum tragacanth (GMTR)-grafted pentapolymer hydrogel/ HG2 was synthesized from three monomers, i.e., cis-butenedioic acid (cBDA), N-hydroxymethylacryalamide (NHMAm), and 2-(methacryloyloxy)ethanol (MAOE), and in situ generated 2-(3-((hydroxymethyl)amino)-3-oxopropoxy)ethyl-2-methylbutanoate (CM1) and 2-hydroxyethyl 3-(N-(hydroxymethyl)-2-methylbutanamido)-2-methylpropanoate (CM2) comonomers through microwave assisted facile polymerization in aqueous medium. Here, twenty-one GMTR-grafted-[cBDA-co-CM1-co-NHMAm-co-CM2-co-MAOE/ HG1] hydrogels were prepared by using variable amounts of synthesis parameters, of which the optimum HG2 was chosen for the scale-up repetitive As(III)-exclusion. RSM was used to measure the optimum power-temperature-time of microwave irradiation. The structures of HG1, HG2, and As(III)-adsorbed HG2/ As(III)-HG2, in situ anchored comonomers, GMTR-grafting, reusability, thermostability, and surface phenomena were comprehended by XPS, NMR, UV-vis, FTIR, TG, XRD, DLS, and SEM analyses; pHPZC; network parameters; and thermodynamic variables. The geometries, electronic structures, and variable coordinations of As(III) with HG2 were investigated through DFT studies of HG2 and As(OH)3-HG2. The highest exclusion efficiency of 25 mg HG2 within 5-100 mg L-1 As(III) and at 298 K was 192.91 mg g-1, which was significantly higher than that of HG1.
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Affiliation(s)
- Mrinmoy Karmakar
- Advanced Polymer Laboratory, Department of Polymer Science and Technology, Government College of Engineering and Leather Technology (Post-Graduate), Maulana Abul Kalam Azad University of Technology, Block-LB-11, Sector-III, Salt Lake, Kolkata 700106, West Bengal, India
| | - Himarati Mondal
- Advanced Polymer Laboratory, Department of Polymer Science and Technology, Government College of Engineering and Leather Technology (Post-Graduate), Maulana Abul Kalam Azad University of Technology, Block-LB-11, Sector-III, Salt Lake, Kolkata 700106, West Bengal, India
| | - Narendra Nath Ghosh
- Department of Chemistry, University of Gour Banga, NH12, Mokdumpur, Malda, West Bengal 732103, India
| | - Pijush Kanti Chattopadhyay
- Department of Leather Technology, Government College of Engineering and Leather Technology (Post-Graduate), Maulana Abul Kalam Azad University of Technology, Block-LB-11, Sector-III, Salt Lake, Kolkata 700106, West Bengal, India
| | - Nayan Ranjan Singha
- Advanced Polymer Laboratory, Department of Polymer Science and Technology, Government College of Engineering and Leather Technology (Post-Graduate), Maulana Abul Kalam Azad University of Technology, Block-LB-11, Sector-III, Salt Lake, Kolkata 700106, West Bengal, India.
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5
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Ly KL, Hu P, Pham LHP, Luo X. Flow-assembled chitosan membranes in microfluidics: recent advances and applications. J Mater Chem B 2021; 9:3258-3283. [PMID: 33725061 PMCID: PMC8369861 DOI: 10.1039/d1tb00045d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The integration of membranes in microfluidic devices has been extensively exploited for various chemical engineering and bioengineering applications over the past few decades. To augment the applicability of membrane-integrated microfluidic platforms for biomedical and tissue engineering studies, a biologically friendly fabrication process with naturally occurring materials is highly desired. The in situ preparation of membranes involving interfacial reactions between parallel laminar flows in microfluidic networks, known as the flow-assembly technique, is one of the most biocompatible approaches. Membranes of many types with flexible geometries have been successfully assembled inside complex microchannels using this facile and versatile flow-assembly approach. Chitosan is a naturally abundant polysaccharide known for its pronounced biocompatibility, biodegradability, good mechanical stability, ease of modification and processing, and film-forming ability under near-physiological conditions. Chitosan membranes assembled by flows in microfluidics are freestanding, robust, semipermeable, and well-aligned in microstructure, and show high affinity to bioactive reagents and biological components (e.g. biomolecules, nanoparticles, or cells) that provide facile biological functionalization of microdevices. Here, we discuss the recent developments and optimizations in the flow-assembly of chitosan membranes and chitosan-based membranes in microfluidics. Furthermore, we recapitulate the applications of the chitosan membrane-integrated microfluidic platforms dedicated to biology, biochemistry, and drug release fields, and envision the future developments of this important platform with versatile functions.
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Affiliation(s)
- Khanh L Ly
- Department of Biomedical Engineering, The Catholic University of America, Washington, DC 20064, USA
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Suzuki R, Idota N, Nishimi T, Sugahara Y. Dual-functional Janus Nanosheets with Cation Exchangeability and Thermo-responsiveness Prepared via Regioselective Modification of K4Nb6O17·3H2O. CHEM LETT 2020. [DOI: 10.1246/cl.200300] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ryoko Suzuki
- Department of Applied Chemistry, School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
- Kagami Memorial Research Institute for Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo 169-0051, Japan
| | - Naokazu Idota
- Kagami Memorial Research Institute for Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo 169-0051, Japan
- Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology, 2-12-1-N1-6, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Taisei Nishimi
- Japan Technological Research Association of Artificial Photosynthetic Chemical Process (ARPChem), 2-11-9 Iwamoto-cho, Chiyoda-ku, Tokyo 101-0032, Japan
| | - Yoshiyuki Sugahara
- Department of Applied Chemistry, School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
- Kagami Memorial Research Institute for Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo 169-0051, Japan
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7
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Stănescu PO, Radu IC, Drăghici C, Teodorescu M. Controlling the thermal response of poly(N-isopropylacrylamide)-poly(ethylene glycol)- poly(N-isopropylacrylamide) triblock copolymers in aqueous solution by means of additives. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104610] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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8
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Effect of Hydrophobic Interactions on Lower Critical Solution Temperature for Poly( N-isopropylacrylamide-co-dopamine Methacrylamide) Copolymers. Polymers (Basel) 2019; 11:polym11060991. [PMID: 31167423 PMCID: PMC6630648 DOI: 10.3390/polym11060991] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 05/21/2019] [Accepted: 05/23/2019] [Indexed: 11/17/2022] Open
Abstract
For the preparation of thermoresponsive copolymers, for e.g., tissue engineering scaffolds or drug carriers, a precise control of the synthesis parameters to set the lower critical solution temperature (LCST) is required. However, the correlations between molecular parameters and LCST are partially unknown and, furthermore, LCST is defined as an exact temperature, which oversimplifies the real situation. Here, random N-isopropylacrylamide (NIPAM)/dopamine methacrylamide (DMA) copolymers were prepared under a systematical variation of molecular weight and comonomer amount and their LCST in water studied by calorimetry, turbidimetry, and rheology. Structural information was deduced from observed transitions clarifying the contributions of molecular weight, comonomer content, end-group effect or polymerization degree on LCST, which were then statistically modeled. This proved that the LCST can be predicted through molecular structure and conditions of the solutions. While the hydrophobic DMA lowers the LCST especially the onset, polymerization degree has an important but smaller influence over all the whole LCST range.
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Picos-Corrales LA, Garcia-Carrasco M, Licea-Claverie A, Chavez-Santoscoy RA, Serna-Saldívar SO. NIPAAm-containing amphiphilic block copolymers with tailored LCST: Aggregation behavior, cytotoxicity and evaluation as carriers of indomethacin, tetracycline and doxorubicin. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2019. [DOI: 10.1080/10601325.2019.1586440] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
| | - Melissa Garcia-Carrasco
- Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, Culiacán, México
- Centro de Graduados e Investigación en Química, Tecnológico Nacional de México/Instituto Tecnológico de Tijuana, Tijuana, México
| | - Angel Licea-Claverie
- Centro de Graduados e Investigación en Química, Tecnológico Nacional de México/Instituto Tecnológico de Tijuana, Tijuana, México
| | - Rocio A. Chavez-Santoscoy
- Facultad de Ciencias Químicas e Ingeniería, Universidad Autónoma de Baja California-Campus Tijuana, Tijuana, México
| | - Sergio O. Serna-Saldívar
- Escuela de Biotecnología y Alimentos, Centro de Biotecnología FEMSA, Tecnológico de Monterrey-Campus Monterrey, Monterrey, México
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10
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Alsubaie F, Liarou E, Nikolaou V, Wilson P, Haddleton DM. Thermoresponsive viscosity of polyacrylamide block copolymers synthesised via aqueous Cu-RDRP. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.02.045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Li P, Wu Y, Zhou Y, Zuo Y. Preparation and characterization of resorcinol-dialdehyde starch-formaldehyde copolycondensation resin adhesive. Int J Biol Macromol 2019; 127:12-17. [PMID: 30594628 DOI: 10.1016/j.ijbiomac.2018.12.249] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 12/20/2018] [Accepted: 12/26/2018] [Indexed: 11/15/2022]
Abstract
A resorcinol-dialdehyde starch-formaldehyde (RDSF) copolycondensation resin adhesive was prepared by substituting high reactive dialdehyde starch for a portion of formaldehyde in the formulation. Fourier transforms infrared spectrometer (FTIR) analysis results confirmed that the copolycondensation reaction of the dialdehyde starch with resorcinol and formaldehyde was successful. The curing property, thermal stability, permeability and crystal structure of the RDSF adhesive were characterized using differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), scanning electron microscope (SEM), X-ray diffraction (XRD). The solids content, viscosity, curing time, bonding strength were also obtained. The results showed that the RDSF adhesive had a higher solids content, moderate viscosity, shorter curing time and better bond strength than a standard resorcinol-starch-formaldehyde (RSF) adhesive. It was found that dialdehyde starch could accelerate the curing rate, while decreasing the curing temperature and heat release during the curing process of RDSF. The dense cross-linked structure of the dialdehyde starch and resorcinol-formaldehyde (RF) system produced improved thermal stability. SEM results showed that the RDSF adhesive formed a thin and continuous adhesive layer on the surface of a poplar board, and filled the pores of the wood, which improved the bond strength. The crystal structure of the RDSF was not altered by addition of the starch, and the physicochemical properties of the adhesive were similar to those of a normal resorcinol-formaldehyde resin.
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Affiliation(s)
- Ping Li
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, PR China; College of Art and Design, Xiangnan University, Chenzhou, Hunan 423000, PR China
| | - Yiqiang Wu
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, PR China
| | - Ya Zhou
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, PR China
| | - Yingfeng Zuo
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, PR China.
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12
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Tan S, Saito K, Hearn MTW. Stimuli-responsive polymeric materials for separation of biomolecules. Curr Opin Biotechnol 2018; 53:209-223. [DOI: 10.1016/j.copbio.2018.02.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 02/12/2018] [Accepted: 02/12/2018] [Indexed: 10/17/2022]
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13
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Wang L, Liu Y, Bao L, Hu D, Zong Y, Tong G, Zhao L, Liu T. Preparation of acrylamide-based poly-HIPEs with enhanced mechanical strength using PVDBM- b
-PEG-emulsified CO 2
-in-water emulsions. J Appl Polym Sci 2018. [DOI: 10.1002/app.46346] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Liwen Wang
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Yongjia Liu
- Instrumental Analysis Center; Shanghai Jiao Tong University; Shanghai 200240 People's Republic of China
| | - Lei Bao
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Dongdong Hu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Yuan Zong
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Gangsheng Tong
- Instrumental Analysis Center; Shanghai Jiao Tong University; Shanghai 200240 People's Republic of China
| | - Ling Zhao
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Tao Liu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
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Mourão CA, Bokeloh F, Xu J, Prost E, Duma L, Merlier F, Bueno SMA, Haupt K, Tse Sum Bui B. Dual-Oriented Solid-Phase Molecular Imprinting: Toward Selective Artificial Receptors for Recognition of Nucleotides in Water. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01782] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Cecília A. Mourão
- Sorbonne
Universités, Université de Technologie de Compiègne, CNRS Enzyme and Cell Engineering Laboratory, Rue Roger Couttolenc, CS 60319, 60203 Cedex Compiègne, France
- School
of Chemical Engineering, University of Campinas, Rua Albert Einstein, 500, Campinas, São Paulo, Brazil
| | - Frank Bokeloh
- Sorbonne
Universités, Université de Technologie de Compiègne, CNRS Enzyme and Cell Engineering Laboratory, Rue Roger Couttolenc, CS 60319, 60203 Cedex Compiègne, France
| | - Jingjing Xu
- Sorbonne
Universités, Université de Technologie de Compiègne, CNRS Enzyme and Cell Engineering Laboratory, Rue Roger Couttolenc, CS 60319, 60203 Cedex Compiègne, France
| | - Elise Prost
- Sorbonne
Universités, Université de Technologie de Compiègne, CNRS Enzyme and Cell Engineering Laboratory, Rue Roger Couttolenc, CS 60319, 60203 Cedex Compiègne, France
| | - Luminita Duma
- Sorbonne
Universités, Université de Technologie de Compiègne, CNRS Enzyme and Cell Engineering Laboratory, Rue Roger Couttolenc, CS 60319, 60203 Cedex Compiègne, France
| | - Franck Merlier
- Sorbonne
Universités, Université de Technologie de Compiègne, CNRS Enzyme and Cell Engineering Laboratory, Rue Roger Couttolenc, CS 60319, 60203 Cedex Compiègne, France
| | - Sônia M. A. Bueno
- School
of Chemical Engineering, University of Campinas, Rua Albert Einstein, 500, Campinas, São Paulo, Brazil
| | - Karsten Haupt
- Sorbonne
Universités, Université de Technologie de Compiègne, CNRS Enzyme and Cell Engineering Laboratory, Rue Roger Couttolenc, CS 60319, 60203 Cedex Compiègne, France
| | - Bernadette Tse Sum Bui
- Sorbonne
Universités, Université de Technologie de Compiègne, CNRS Enzyme and Cell Engineering Laboratory, Rue Roger Couttolenc, CS 60319, 60203 Cedex Compiègne, France
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15
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Kurşun F, Işıklan N. Development of thermo-responsive poly(vinyl alcohol)-g-poly(N-isopropylacrylamide) copolymeric membranes for separation of isopropyl alcohol/water mixtures via pervaporation. J IND ENG CHEM 2016. [DOI: 10.1016/j.jiec.2016.07.011] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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16
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Özbaş Z, Gürdağ G. Swelling kinetics, mechanical properties, and release characteristics of chitosan-based semi-IPN hydrogels. J Appl Polym Sci 2015. [DOI: 10.1002/app.41886] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Zehra Özbaş
- Department of Chemical Engineering; Faculty of Engineering; Istanbul University; 34320 Avcilar Istanbul Turkey
| | - Gülten Gürdağ
- Department of Chemical Engineering; Faculty of Engineering; Istanbul University; 34320 Avcilar Istanbul Turkey
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17
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Man Y, Peng G, Lv X, Liang Y, Wang Y, Chen Y, Deng Y. Microchip-Grafted P(NIPAAm-co-VPBA) with Thermoresponsive Boronate Affinity for Capture–Release of cis-Diol Biomolecules. Chromatographia 2014. [DOI: 10.1007/s10337-014-2821-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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18
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Stempfle B, Große A, Ferse B, Arndt KF, Wöll D. Anomalous diffusion in thermoresponsive polymer-clay composite hydrogels probed by wide-field fluorescence microscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:14056-61. [PMID: 25358126 DOI: 10.1021/la503571j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Thermoresponsive materials exhibit an enormous potential for tissue engineering, separation systems, and drug delivery. We investigated the diffusion of laponite clay nanoparticles, which serve as physical cross-linkers to achieve improved material properties in poly(N-isopropylacrylamide) (PNIPAM)-clay composite hydrogels close to the gel point. The networks are formed through physical interactions between PNIPAM chains and clay nanoparticles after these two components are mixed. In contrast to previous studies, a covalent labeling strategy was chosen to minimize the amount of free dyes in solution. Single-particle tracking of the labeled clay nanoparticles showed that their diffusion is anomalous at all temperatures used in this study, reflecting the viscoelastic behavior as a cross-linker. Stepwise heating from 24 to 38 °C resulted in a slight increase of the diffusion coefficient and the anomality parameter α up to the volume phase transition temperature of ca. 31 °C, which was followed by a significant drop of both parameters, reflecting strongly hindered motion of the collapsed nanoparticle aggregates.
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Affiliation(s)
- Beate Stempfle
- Faculty of Chemistry, University of Konstanz , Universitätsstr.10, 78464 Konstanz, Germany
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19
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Shui X, Shen Y, Fei G, Wang H, Zhu K. The effect of nonionic monomer HAM on properties of cationic surfactant-free acrylic/alkyd hybrid emulsion. J Appl Polym Sci 2014. [DOI: 10.1002/app.41406] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Xiaojun Shui
- College of chemistry and chemical engineering, Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology; Xi'an 710021 People's Republic of China
| | - Yiding Shen
- College of chemistry and chemical engineering, Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology; Xi'an 710021 People's Republic of China
| | - Guiqiang Fei
- College of chemistry and chemical engineering, Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology; Xi'an 710021 People's Republic of China
| | - Haihua Wang
- College of chemistry and chemical engineering, Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology; Xi'an 710021 People's Republic of China
| | - Ke Zhu
- College of chemistry and chemical engineering, Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology; Xi'an 710021 People's Republic of China
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20
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Sun YM, Wang W, Wei YY, Deng NN, Liu Z, Ju XJ, Xie R, Chu LY. In situ fabrication of a temperature- and ethanol-responsive smart membrane in a microchip. LAB ON A CHIP 2014; 14:2418-2427. [PMID: 24874275 DOI: 10.1039/c4lc00273c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Here we report a simple and versatile strategy for the in situ fabrication of nanogel-containing smart membranes in microchannels of microchips. The fabrication approach is demonstrated by the in situ formation of a chitosan membrane containing poly(N-isopropylacrylamide) (PNIPAM) nanogels in a microchannel of a microchip. The PNIPAM nanogels, that allow temperature- and ethanol-responsive swelling-shrinking volume transitions, serve as smart nanovalves for controlling the diffusional permeability of solutes across the membrane. Such self-regulation of the membrane permeability is investigated by using fluorescein isothiocyanate (FITC) as a tracer molecule. This approach provides a promising strategy for the in situ fabrication of versatile nanogel-containing smart membranes within microchips via simply changing the functional nanogels for developing micro-scale detectors, sensors, separators and controlled release systems.
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Affiliation(s)
- Yi-Meng Sun
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, China.
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21
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Chen S, Jiang X, Sun L. Reaction Mechanisms of N-isopropylacrylamide Soap-Free Emulsion Polymerization Based on Two Different Initiators. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2014. [DOI: 10.1080/10601325.2014.893144] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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22
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Terefe NS, Glagovskaia O, De Silva K, Stockmann R. Application of stimuli responsive polymers for sustainable ion exchange chromatography. FOOD AND BIOPRODUCTS PROCESSING 2014. [DOI: 10.1016/j.fbp.2014.02.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Poly(N-isopropylacrylamide-co-N-t-butylacrylamide)-block-poly(ethylene glycol)-block-poly(N-isopropylacrylamide-co-N-t-butylacrylamide) triblock copolymers: synthesis and thermogelation properties of aqueous solutions. Colloid Polym Sci 2013. [DOI: 10.1007/s00396-013-2994-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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24
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Chen S, Jiang X, Sun L. Effects of end groups on the thermal response of poly(N-isopropylacrylamide) microgels. J Appl Polym Sci 2013. [DOI: 10.1002/app.39291] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Shufan Chen
- Research Center of Laser Fusion; China Academy of Engineering Physics; Mianyang, Sichuan 621900 China
| | - Xiaodong Jiang
- Research Center of Laser Fusion; China Academy of Engineering Physics; Mianyang, Sichuan 621900 China
| | - Lianlai Sun
- Research Center of Laser Fusion; China Academy of Engineering Physics; Mianyang, Sichuan 621900 China
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Liu L, Song XL, Ju XJ, Xie R, Liu Z, Chu LY. Conversion of Alcoholic Concentration Variations into Mechanical Force via Core–Shell Capsules. J Phys Chem B 2012; 116:974-9. [DOI: 10.1021/jp209699g] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Li Liu
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, 610065, P.R. China
| | - Xiao-Lu Song
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, 610065, P.R. China
| | - Xiao-Jie Ju
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, 610065, P.R. China
| | - Rui Xie
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, 610065, P.R. China
| | - Zhuang Liu
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, 610065, P.R. China
| | - Liang-Yin Chu
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, 610065, P.R. China
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Well-defined N
-Isopropylacrylamide Dual-Sensitive Copolymers with LCST ≈38 °C in Different Architectures: Linear, Block and Star Polymers. MACROMOL CHEM PHYS 2012. [DOI: 10.1002/macp.201100468] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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27
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Saeed A, Georget DM, Mayes AG. Solution thermal properties of a family of thermo-responsive N-isopropyl acrylamide-co-N-hydroxymethyl acrylamide copolymers – Aspects intrinsic to the polymers. REACT FUNCT POLYM 2012. [DOI: 10.1016/j.reactfunctpolym.2011.10.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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28
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Chen S, Jiang L, Dan Y. Preparation and thermal response behavior of poly(N-isopropylacrylamide-co-a crylic acid) microgels via soap-free emulsion polymerization based on AIBN initiator. J Appl Polym Sci 2011. [DOI: 10.1002/app.33938] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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29
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Saeed A, Georget DMR, Mayes AG. Solid-state thermal stability and degradation of a family of poly(N-isopropylacrylamide-co-hydroxymethylacrylamide) copolymers. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/pola.24394] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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30
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Garska B, Tabatabai M, Ritter H. Calix[4]arene-click-cyclodextrin and supramolecular structures with watersoluble NIPAAM-copolymers bearing adamantyl units: "Rings on ring on chain". Beilstein J Org Chem 2010; 6:784-8. [PMID: 20978614 PMCID: PMC2956463 DOI: 10.3762/bjoc.6.83] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2010] [Accepted: 07/08/2010] [Indexed: 01/07/2023] Open
Abstract
We describe the calixarene-cyclodextrin-coupling via click reaction starting from 5,11,17,23-tetra-tert-butyl-25,27-dipropargylether-26,28-hydroxy-calix[4]arene (calix[4]arene-dipropargylether) (2) onto 6I-azido-6I-deoxycyclomaltoheptaose (3) under microwave assisted conditions. The coupling was proven by MALDI-TOF mass spectrometry, ¹H NMR and IR-spectroscopy. The pH dependent supramolecular complex formation with poly(NIPAAM) bearing attached adamantyl units was investigated by dynamic light scattering (DLS) and turbidity measurements.
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Affiliation(s)
- Bernd Garska
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Monir Tabatabai
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Helmut Ritter
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
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