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Biodegradable microspheres with poly(N-isopropylacrylamide) Enriched surface: Thermo-responsibility, biodegradation and drug release. CHINESE JOURNAL OF POLYMER SCIENCE 2015. [DOI: 10.1007/s10118-015-1702-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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2
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Kuo CY, Wang YC, Lee CF, Chiu WY. A novel route for preparation of multifunctional polymeric nanocarriers for stimuli-triggered drug release. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.27033] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chih-Yu Kuo
- Institute of Polymer Science and Engineering; National Taiwan University; Taipei 106 Taiwan
| | - Yu-Cheng Wang
- Department of Materials Science and Engineering; National Taiwan University; Taipei 106 Taiwan
| | - Chia-Fen Lee
- Department of Cosmetic Science, Institute of Cosmetic Science; Chia Nan University of Pharmacy and Science; Tainan 71710 Taiwan
| | - Wen-Yen Chiu
- Institute of Polymer Science and Engineering; National Taiwan University; Taipei 106 Taiwan
- Department of Materials Science and Engineering; National Taiwan University; Taipei 106 Taiwan
- Department of Chemical Engineering; National Taiwan University; Taipei 106 Taiwan
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3
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Lu N, Yang K, Li J, Weng Y, Yuan B, Ma Y. Controlled Drug Loading and Release of a Stimuli-Responsive Lipogel Consisting of Poly(N-isopropylacrylamide) Particles and Lipids. J Phys Chem B 2013; 117:9677-82. [DOI: 10.1021/jp402826n] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Naiyan Lu
- Center for Soft Condensed Matter
Physics and Interdisciplinary Research, Soochow University, Suzhou 215006, P. R. China
| | - Kai Yang
- Center for Soft Condensed Matter
Physics and Interdisciplinary Research, Soochow University, Suzhou 215006, P. R. China
| | - Jingliang Li
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Vic 3216, Australia
| | - Yuyan Weng
- Center for Soft Condensed Matter
Physics and Interdisciplinary Research, Soochow University, Suzhou 215006, P. R. China
| | - Bing Yuan
- Center for Soft Condensed Matter
Physics and Interdisciplinary Research, Soochow University, Suzhou 215006, P. R. China
| | - Yuqiang Ma
- Center for Soft Condensed Matter
Physics and Interdisciplinary Research, Soochow University, Suzhou 215006, P. R. China
- National Laboratory of Solid
State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, P. R. China
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Ma R, Shi L. Design of Complex Micelles for Drug Delivery. FUNCTIONAL POLYMERS FOR NANOMEDICINE 2013. [DOI: 10.1039/9781849737388-00207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
| | - Linqi Shi
- Key Laboratory of Functional Polymer Materials, Ministry of Education, and Institute of Polymer Chemistry, Nankai UniversityTianjin 300071P. R.
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DUAL DRUG DELIVERY SYSTEM FROM MULTI-STEP SELF-ASSEMBLED POLYELECTROLYTE NANOPARTICLES. ACTA POLYM SIN 2011. [DOI: 10.3724/sp.j.1105.2011.11025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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Song F, Wang XL, Wang YZ. Poly (N-isopropylacrylamide)/poly (ethylene oxide) blend nanofibrous scaffolds: thermo-responsive carrier for controlled drug release. Colloids Surf B Biointerfaces 2011; 88:749-54. [PMID: 21889883 DOI: 10.1016/j.colsurfb.2011.08.015] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2010] [Revised: 06/15/2011] [Accepted: 08/10/2011] [Indexed: 11/30/2022]
Abstract
A facile electrospinning method has been utilized to fabricate poly (N-isopropylacrylamide) (PNIPAM)/poly (ethylene oxide) (PEO) blend nanofibers having the mean fiber diameters from approximately 250 to 380 nm. Scanning electron microscopy (SEM) images showed that the morphology and diameter distribution of the nanofibrous scaffolds can be easily modulated by changing the weight ratio of PNIPAM/PEO in electrospinning solution. X-ray diffraction (XRD) and thermogravimetric analysis (TGA) demonstrated that there were interactions between the molecules of PNIPAM and PEO. Vitamin B12 was chosen as a hydrophilic model drug for in situ encapsulation in PNIPAM/PEO blend nanofibrous scaffolds. The rate of drug release can be controlled by adjusting the weight ratio of PNIPAM/PEO, the temperature of release medium and the drug loading amount. It is suggested that the blend nanofibrous scaffold could be used as a new thermo-responsive matrix for the entrapment and controlled release of drugs.
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Affiliation(s)
- Fei Song
- Center for Degradable and Flame-Retardant Polymeric Materials (ERCEPM-MoE), College of Chemistry, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610064, China.
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Chiang WH, Hsu YH, Chen YW, Chern CS, Chiu HC. Thermoresponsive Interpolymeric Complex Assemblies from Co-association of Linear PAAc Homopolymers with PNIPAAm Segments Containing PAAc-Based Graft Copolymer. MACROMOL CHEM PHYS 2011. [DOI: 10.1002/macp.201100124] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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8
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Chiang WH, Hsu YH, Chern CS, Chiu HC. Two-stage thermally induced stable colloidal assemblies from PAAc/PNIPAAm/mPEG graft copolymer in water. POLYMER 2011. [DOI: 10.1016/j.polymer.2011.03.046] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Chen S, Cheng SX, Zhuo RX. Self-assembly strategy for the preparation of polymer-based nanoparticles for drug and gene delivery. Macromol Biosci 2010; 11:576-89. [PMID: 21188686 DOI: 10.1002/mabi.201000427] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2010] [Indexed: 12/13/2022]
Abstract
Nanoparticulate drug-delivery systems have attained much importance because of their injectable property, the possibility to achieve passive targeting and active targeting, and unique advantages to realize stimuli tailored delivery. Molecular self-assembly is a powerful method for fabricating polymer-based nanoparticles, which involves various driving forces, such as hydrophobic interactions, electrostatic interactions, stereocomplexation, host/guest interactions and hydrogen bonding. By fine tuning one or many types of these interactions, self-assemblies with a wide range of structures and functions could be fabricated. In this article, recent developments in different self-assembly strategies for the preparation of polymer-based nanoparticulate delivery systems are discussed.
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Affiliation(s)
- Si Chen
- Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry, Wuhan University, Wuhan, China
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Chiang WH, Hsu YH, Tang FF, Chern CS, Chiu HC. Temperature/pH-induced morphological regulations of shell cross-linked graft copolymer assemblies. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.10.038] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Zheng Y, Zhong L, Huang W, Zhou Y, Yan D. Flocculation-resistant multimolecular micelles with thermoresponsive corona from dendritic heteroarm star copolymers. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/pola.24230] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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12
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Hussain H, Tan BH, Seah GL, Liu Y, He CB, Davis TP. Micelle formation and gelation of (PEG-P(MA-POSS)) amphiphilic block copolymers via associative hydrophobic effects. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:11763-11773. [PMID: 20536258 DOI: 10.1021/la101686q] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A series of well-defined amphiphilic di- and triblock copolymers have been synthesized, using atom transfer radical polymerization, with poly(ethylene glycol) (PEG) and poly(methacrylisobutyl polyhedral oligomeric silsesquioxane) P(MA-POSS) as the hydrophilic and hydrophobic blocks, respectively. The detailed self-assembly behavior of the amphiphilic macromolecules in aqueous media was studied using both static and dynamic light scattering (SLS and DLS) techniques. The evolution of block copolymer micelle formation in THF/water mixture (20/80 v/v) was monitored as the THF evaporated from the solvent mixture. Initially the block copolymer chains existed as unimers in solution, followed by the formation of smaller aggregates (R(h) < 2 nm) after 30 min, eventually growing in size to reach an equilibrium size when all the THF evaporated within 24 h. The micelles formed by the block copolymers were found to be kinetically unstable (not frozen); i.e., they tended to revert to individual copolymer chains on dilution. The hydrodynamic radii, R(h), of the micelles varied with the degree of polymerization (DP) of the hydrophobic P(MA-POSS); for example, for PEG(5K)-b-P(MA-POSS), an increase from R(h) approximately 13.3 +/- 1.1 nm to R(h) approximately 17.5 +/- 1.4 nm was observed with a nominal change in the DP of P(MA-POSS) from 4 to 6. The micelles formed by the triblock copolymers (P(MA-POSS)-b-PEG(10K)-b-P(MA-POSS)) were comparable in size to the diblock copolymer micelles; e.g., R(h) approximately 14.0 +/- 1.3 nm was found for P(MA-POSS)(4)-b-PEG(10K)-b-P(MA-POSS)(4). The micellar structures created by the triblocks in aqueous media were "flowerlike", where the PEG middle block adopted a loop conformation in the micelle corona. In addition to micelles, larger aggregates formed by P(MA-POSS)-b-PEG(10K)-b-P(MA-POSS) were also detected in solution. The larger aggregates may suggest a contribution from some PEG blocks adopting an extended conformation with one end dangling in solution, causing gelation at higher copolymer concentrations via intermicellar interactions. The P(MA-POSS)(4)-b-PEG(10K)-b- P(MA-POSS)(4) formed a gel in water at approximately 8.8 wt % copolymer concentration. No gel formation by diblock copolymers was observed; however, the addition of a small amount of triblock copolymer to an aqueous solution of diblock copolymer results in gel formation. Finally, rheological behavior of the obtained gels was also investigated.
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Affiliation(s)
- H Hussain
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research, 3 Research Link, Singapore 117602.
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SYNTHESIS OF TERPYRIDINEFUNCTIONALIZED POLY( N-ISOPROPYLACYLAMIDE)S AND THEIR METAL COMPLEXES. ACTA POLYM SIN 2010. [DOI: 10.3724/sp.j.1105.2010.09467] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Sun P, Zhang Y, Shi L, Gan Z. Thermosensitive Nanoparticles Self-Assembled from PCL-b
-PEO-b
-PNIPAAm Triblock Copolymers and their Potential for Controlled Drug Release. Macromol Biosci 2010; 10:621-31. [DOI: 10.1002/mabi.200900434] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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15
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Fuchise K, Kakuchi R, Lin ST, Sakai R, Sato SI, Satoh T, Chen WC, Kakuchi T. Control of thermoresponsive property of urea end-functionalized poly(N
-isopropylacrylamide) based on the hydrogen bond-assisted self-assembly in water. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23669] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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16
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Boyer C, Bulmus V, Davis TP, Ladmiral V, Liu J, Perrier S. Bioapplications of RAFT Polymerization. Chem Rev 2009; 109:5402-36. [DOI: 10.1021/cr9001403] [Citation(s) in RCA: 829] [Impact Index Per Article: 55.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Cyrille Boyer
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Sciences & Engineering, UNSW, Sydney, NSW 2052, Australia, Centre for Advanced Macromolecular Design (CAMD), School of Biotechnology & Biomolecular Sciences, UNSW, Sydney, NSW 2052, Australia, and Key Centre for Polymers & Colloids, School of Chemistry, Building F11, Eastern Avenue, The University of Sydney, NSW 2006, Australia
| | - Volga Bulmus
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Sciences & Engineering, UNSW, Sydney, NSW 2052, Australia, Centre for Advanced Macromolecular Design (CAMD), School of Biotechnology & Biomolecular Sciences, UNSW, Sydney, NSW 2052, Australia, and Key Centre for Polymers & Colloids, School of Chemistry, Building F11, Eastern Avenue, The University of Sydney, NSW 2006, Australia
| | - Thomas P. Davis
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Sciences & Engineering, UNSW, Sydney, NSW 2052, Australia, Centre for Advanced Macromolecular Design (CAMD), School of Biotechnology & Biomolecular Sciences, UNSW, Sydney, NSW 2052, Australia, and Key Centre for Polymers & Colloids, School of Chemistry, Building F11, Eastern Avenue, The University of Sydney, NSW 2006, Australia
| | - Vincent Ladmiral
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Sciences & Engineering, UNSW, Sydney, NSW 2052, Australia, Centre for Advanced Macromolecular Design (CAMD), School of Biotechnology & Biomolecular Sciences, UNSW, Sydney, NSW 2052, Australia, and Key Centre for Polymers & Colloids, School of Chemistry, Building F11, Eastern Avenue, The University of Sydney, NSW 2006, Australia
| | - Jingquan Liu
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Sciences & Engineering, UNSW, Sydney, NSW 2052, Australia, Centre for Advanced Macromolecular Design (CAMD), School of Biotechnology & Biomolecular Sciences, UNSW, Sydney, NSW 2052, Australia, and Key Centre for Polymers & Colloids, School of Chemistry, Building F11, Eastern Avenue, The University of Sydney, NSW 2006, Australia
| | - Sébastien Perrier
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Sciences & Engineering, UNSW, Sydney, NSW 2052, Australia, Centre for Advanced Macromolecular Design (CAMD), School of Biotechnology & Biomolecular Sciences, UNSW, Sydney, NSW 2052, Australia, and Key Centre for Polymers & Colloids, School of Chemistry, Building F11, Eastern Avenue, The University of Sydney, NSW 2006, Australia
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Hussain H, Tan BH, Gudipati CS, He CB, Liu Y, Davis TP. Micelle formation of amphiphilic polystyrene-b-poly(N-vinylpyrrolidone) diblock copolymer in methanol and water-methanol binary mixtures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:5557-5564. [PMID: 19371048 DOI: 10.1021/la8042389] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The micelle formation by the amphiphilic polystyrene-block-poly(N-vinylpyrrolidone) (PS48-b-PNVP99) copolymer is investigated in methanol and water-methanol binary mixtures of various compositions using 1H NMR, fluorescence spectroscopy, static/dynamic light scattering (SLS/DLS), and transmission electron microscopy (TEM). Critical micelle concentrations (cmc) are determined by employing fluorescence spectroscopy and DLS measurements. The cmc of the PS48-b-PNVP99 block copolymer increases with increasing methanol content in the water-methanol binary mixtures, suggesting that methanol is a better solvent for the PS48-b-PNVP99 block copolymer than water-methanol mixtures or pure water. The amphiphilic PS48-b-PNVP99 diblock copolymer forms spherical micelles of Rh approximately 16 nm in pure methanol solution as revealed by DLS measurements. In contrast, significantly larger micelles having higher aggregation numbers are formed in water-methanol binary mixtures. Temperature dependent data reveal an increase in aggregation number and radius of gyration (Rg) concomitantly with temperature (10-40 degrees C). In contrast, the overall size (Rh) of the micelles remains almost constant over the same temperature range. An explanation is tendered that PNVP coronas dehydrate/desolvate at higher temperatures counteracting the increase in micelle size (Rh) caused by increased aggregation numbers (Nagg).
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Affiliation(s)
- H Hussain
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research, 3 Research Link, Singapore 117602
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Chiang WH, Hsu YH, Lou TW, Chern CS, Chiu HC. Effects of mPEG Grafts on Morphology and Cross-Linking of Thermally Induced Micellar Assemblies from PAAc-Based Graft Copolymers in Aqueous Phase. Macromolecules 2009. [DOI: 10.1021/ma900263j] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wen-Hsuan Chiang
- Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan, and Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Yuan-Hung Hsu
- Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan, and Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Tzu-Wei Lou
- Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan, and Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Chorng-Shyan Chern
- Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan, and Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Hsin-Cheng Chiu
- Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan, and Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
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Chiang WH, Hsu YH, Chern CS, Chiu HC. Thermally Induced Polymeric Assemblies from the PAAc-Based Copolymer Containing Both PNIPAAm and mPEG Grafts in Water. J Phys Chem B 2009; 113:4187-96. [DOI: 10.1021/jp8106292] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wen-Hsuan Chiang
- Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan, and Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Yuan-Hung Hsu
- Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan, and Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Chorng-Shyan Chern
- Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan, and Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Hsin-Cheng Chiu
- Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan, and Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
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