1
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Huang YC, Chen WC, Kuo SW. Mesoporous Phenolic/POSS Hybrids Induced by Microphase Separation Arising from Competitive Hydrogen Bonding Interactions. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yen-Chi Huang
- Department of Materials and Optoelectronic Science, Center for Functional Polymers and Supramolecular Materials, National Sun Yat-Sen University, Kaohsiung804, Taiwan
| | - Wei-Cheng Chen
- Department of Materials and Optoelectronic Science, Center for Functional Polymers and Supramolecular Materials, National Sun Yat-Sen University, Kaohsiung804, Taiwan
| | - Shiao-Wei Kuo
- Department of Materials and Optoelectronic Science, Center for Functional Polymers and Supramolecular Materials, National Sun Yat-Sen University, Kaohsiung804, Taiwan
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2
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Ramírez-Colón J, Santiago-Maldonado X, Laboy-López S, Méndez Fernández PO, Torres-Díaz M, Lasalde-Ramírez JA, Díaz-Vázquez LM, Nicolau E. Porous Cellulose Acetate/Block Copolymer Membranes for the Recovery of Polyphenolic Compounds from Aquatic Environments. ACS OMEGA 2022; 7:2774-2785. [PMID: 35097274 PMCID: PMC8793080 DOI: 10.1021/acsomega.1c04327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 12/29/2021] [Indexed: 05/15/2023]
Abstract
Polyphenols are natural compounds with strong antioxidant properties synthesized by plants and widely distributed in plant tissues. They compose a broad class of compounds that are commonly employed for multiple applications such as food, pharmaceutical, adhesives, biomedical, agricultural, and industrial purposes. Runoffs from these sources result in the introduction of polyphenols into aquatic environments where they further transform into highly toxic pollutants that can negatively affect aquatic ecosystems and humans. Therefore, the development of extraction and remediation methods for such compounds must be addressed. This study describes the identification and operation of a method to recover polyphenolic compounds from water environments by utilizing membrane-based separation. Composite membranes derived from electrospun cellulose acetate (CA) fibers and diblock copolymer (DiBCP) PEO-b-P4VP were prepared to evaluate the adsorption of polyphenolic compounds from aqueous environments. The highly porous CA fibers were developed using the electrospinning technique, and the fabricated DiBCP/CA membranes were characterized using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared (FT-IR) spectroscopy, and tensile testing. Finally, the ability of the composite membranes to adsorb the soluble polyphenolic compounds catechol (CAT) and gallic acid (GA), from a wetland environment, was studied via batch adsorption experiments and by solid-phase extraction (SPE). Results revealed a successful recovery of both polyphenols, at concentrations within the parts per million (ppm) range, from the aqueous media. This suggests a novel approach to recover these compounds to prevent their transformation into toxic pollutants upon entrance to water environments.
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Affiliation(s)
- José
L. Ramírez-Colón
- Department
of Biology, University of Puerto Rico, Río Piedras Campus, PO Box
23360, San Juan, Puerto Rico 00931-3346, United States
- Molecular
Science Research Center, University of Puerto
Rico, 1390 Ponce De León Ave, Suite 2, San
Juan, Puerto Rico 00931-3346, United States
| | - Xaimara Santiago-Maldonado
- Department
of Chemistry, University of Puerto Rico, Río Piedras Campus, PO Box
23346, San Juan, Puerto Rico 00931-3346, United States
| | - Simara Laboy-López
- Department
of Chemistry, University of Puerto Rico, Río Piedras Campus, PO Box
23346, San Juan, Puerto Rico 00931-3346, United States
- Molecular
Science Research Center, University of Puerto
Rico, 1390 Ponce De León Ave, Suite 2, San
Juan, Puerto Rico 00931-3346, United States
| | - Pedro O. Méndez Fernández
- Department
of Biology, University of Puerto Rico, Río Piedras Campus, PO Box
23360, San Juan, Puerto Rico 00931-3346, United States
| | - Marielys Torres-Díaz
- Department
of Chemistry, University of Puerto Rico, Río Piedras Campus, PO Box
23346, San Juan, Puerto Rico 00931-3346, United States
| | - José A. Lasalde-Ramírez
- Molecular
Science Research Center, University of Puerto
Rico, 1390 Ponce De León Ave, Suite 2, San
Juan, Puerto Rico 00931-3346, United States
| | - Liz M. Díaz-Vázquez
- Department
of Chemistry, University of Puerto Rico, Río Piedras Campus, PO Box
23346, San Juan, Puerto Rico 00931-3346, United States
| | - Eduardo Nicolau
- Department
of Chemistry, University of Puerto Rico, Río Piedras Campus, PO Box
23346, San Juan, Puerto Rico 00931-3346, United States
- Molecular
Science Research Center, University of Puerto
Rico, 1390 Ponce De León Ave, Suite 2, San
Juan, Puerto Rico 00931-3346, United States
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3
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Huang YS, Huang CF. Synthesis of well-defined PMMA-b-PDMS-b-PMMA triblock copolymer and study of its self-assembly behaviors in epoxy resin. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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4
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Chen W, Liu Y, Kuo S. Mesoporous Organic/Inorganic Hybrid Materials with Frank‐Kasper Phases Templated by an Unusual Linear Symmetry Diblock Copolymer. Macromol Rapid Commun 2021; 42:e2100302. [DOI: 10.1002/marc.202100302] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/18/2021] [Indexed: 12/16/2022]
Affiliation(s)
- Wei‐Cheng Chen
- Department of Materials and Optoelectronic Science National Sun Yat‐Sen University Kaohsiung 80424 Taiwan
| | - Yuan‐Tzu Liu
- Department of Materials and Optoelectronic Science National Sun Yat‐Sen University Kaohsiung 80424 Taiwan
| | - Shiao‐Wei Kuo
- Department of Materials and Optoelectronic Science National Sun Yat‐Sen University Kaohsiung 80424 Taiwan
- Department of Medicinal and Applied Chemistry Kaohsiung Medical University Kaohsiung 807 Taiwan
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5
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Kuo S. Hydrogen bonding mediated
self‐assembled
structures from block copolymer mixtures to mesoporous materials. POLYM INT 2021. [DOI: 10.1002/pi.6264] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Shiao‐Wei Kuo
- Department of Materials and Optoelectronic Science Center of Crystal Research, National Sun Yat‐Sen University Kaohsiung Taiwan
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6
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Construction Hierarchically Mesoporous/Microporous Materials Based on Block Copolymer and Covalent Organic Framework. J Taiwan Inst Chem Eng 2020. [DOI: 10.1016/j.jtice.2020.06.013] [Citation(s) in RCA: 117] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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7
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El-Mahdy AFM, Liu TE, Kuo SW. Direct synthesis of nitrogen-doped mesoporous carbons from triazine-functionalized resol for CO 2 uptake and highly efficient removal of dyes. JOURNAL OF HAZARDOUS MATERIALS 2020; 391:122163. [PMID: 32062344 DOI: 10.1016/j.jhazmat.2020.122163] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 01/19/2020] [Accepted: 01/21/2020] [Indexed: 06/10/2023]
Abstract
In this study we synthesized a triazine-formaldehyde phenolic resin as a nitrogen-containing resol (N-resol) through the condensation of 2,4,6-tris(4-hydroxyphenyl)triazine and formaldehyde. We then used this N-resol as a carbon and nitrogen atom source, mixing it with a diblock copolymer of PEO-b-PCL as the soft template, for the direct synthesis of N-doped mesoporous carbons. Interestingly, the self-assembled N-resol/PEO-b-PCL blends underwent a mesophase transition from cylinder to gyroid and back again to cylinder structures upon increasing the N-resol concentration (i.e., cylinder at 50/50; gyroid at 60/40; cylinder at 70/30). After removing the soft template at 700 °C, the resultant N-doped mesoporous carbons possessed high N atom contents (up to 13 wt%) and displayed gyroid and cylinder nanostructures. The synthesized N-doped mesoporous carbons exhibited excellent CO2 uptake capacities (up to 72 and 150 mg g-1 at 298 and 273 K, respectively). Furthermore, the N-doped mesoporous gyroid carbon structure displayed high adsorption capacities toward organic dyes in water. The maximum adsorption capacities of rhodamine B and methylene blue in water reached as high as 204.08 and 308.64 mg g-1, respectively; furthermore, these N-doped mesoporous carbons also maintained up to 98 % of their maximum adsorption capacities within 45 min.
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Affiliation(s)
- Ahmed F M El-Mahdy
- Department of Materials and Optoelectronic Science, Center of Crystal Research, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Tzu-En Liu
- Department of Materials and Optoelectronic Science, Center of Crystal Research, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Shiao-Wei Kuo
- Department of Materials and Optoelectronic Science, Center of Crystal Research, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan; Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
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8
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High-Molecular-Weight PLA- b-PEO- b-PLA Triblock Copolymer Templated Large Mesoporous Carbons for Supercapacitors and CO 2 Capture. Polymers (Basel) 2020; 12:polym12051193. [PMID: 32456231 PMCID: PMC7284743 DOI: 10.3390/polym12051193] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 05/18/2020] [Accepted: 05/20/2020] [Indexed: 11/23/2022] Open
Abstract
High-molecular-weight PLA440-b-PEO454-b-PLA440 (LEL) triblock copolymer was synthesized through simple ring-opening polymerization (ROP) by using the commercial homopolymer HO-PEO454-OH as the macro-initiator. The material acted as a single template to prepare the large mesoporous carbons by using resol-type phenolic resin as a carbon source. Self-assembled structures of phenolic/LEL blends mediated by hydrogen bonding interaction were determined by FTIR and SAXS analyses. Through thermal curing and carbonization procedures, large mesoporous carbons (>50 nm) with a cylindrical structure and high surface area (>600 m2/g) were obtained because the OH units of phenolics prefer to interact with PEO block rather than PLA block, as determined by FTIR spectroscopy. Furthermore, higher CO2 capture and good energy storage performance were observed for this large mesoporous carbon, confirming that the proposed approach provides an easy method for the preparation of large mesoporous materials.
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9
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Hung WS, Ahmed MMM, Mohamed MG, Kuo SW. Competing hydrogen bonding produces mesoporous/macroporous carbons templated by a high-molecular-weight poly(caprolactone–b–ethylene oxide–b–caprolactone) triblock copolymer. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-02154-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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10
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Tseng TC, Kuo SW. Hierarchical Self-Assembled Structures from Diblock Copolymer Mixtures by Competitive Hydrogen Bonding Strength. Molecules 2018; 23:E2242. [PMID: 30177633 PMCID: PMC6225209 DOI: 10.3390/molecules23092242] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Revised: 08/30/2018] [Accepted: 08/31/2018] [Indexed: 11/17/2022] Open
Abstract
In this work we prepared poly(styrene⁻b⁻vinylphenol) (PS-b-PVPh) by sequential anionic living polymerization and poly(ethylene oxide-b-4-vinylpyridine) (PEO-b-P4VP) by reversible addition fragmentation chain transfer polymerization (RAFT) by using poly(ethylene oxide) 4-cyano-4-(phenylcarbonothioylthio)pentanoate (PEO-SC(S)Ph) as a macroinitiator with two hydrogen bonded acceptor groups. When blending with disordered PEO-b-P4VP diblock copolymer, we found the order-order self-assembled structure transition from lamellar structure for pure PS-b-PVPh to cylindrical, worm-like, and finally to PEO crystalline lamellar structures. Taking the advantage of the ΔK effect from competitive hydrogen bonding strengths between PVPh/P4VP and PVPh/PEO domains, it could form the hierarchical self-assembled morphologies such as core⁻shell cylindrical nanostructure.
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Affiliation(s)
- Tzu-Chun Tseng
- Department of Materials and Optoelectronic Science, Center for Functional Polymers and Supramolecular Materials, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan.
| | - Shiao-Wei Kuo
- Department of Materials and Optoelectronic Science, Center for Functional Polymers and Supramolecular Materials, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan.
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80424, Taiwan.
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11
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Tsai CC, Gan Z, Chen T, Kuo SW. Competitive Hydrogen Bonding Interactions Influence the Secondary and Hierarchical Self-Assembled Structures of Polypeptide-Based Triblock Copolymers. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00087] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Cheng-Chang Tsai
- Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - Zhihua Gan
- State Key Laboratory of Organic−Inorganic Composites, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Tao Chen
- Ningbo Institute of Material Technology and Engineering, Chinese Academy of Science, Zhongguan West Road 1219, 315201 Ningbo, China
| | - Shiao-Wei Kuo
- Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan
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12
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Chu WC, Bastakoti BP, Kaneti YV, Li JG, Alamri HR, Alothman ZA, Yamauchi Y, Kuo SW. Tailored Design of Bicontinuous Gyroid Mesoporous Carbon and Nitrogen-Doped Carbon from Poly(ethylene oxide-b-caprolactone) Diblock Copolymers. Chemistry 2017; 23:13734-13741. [PMID: 28699298 DOI: 10.1002/chem.201702360] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Indexed: 11/11/2022]
Abstract
Highly ordered mesoporous resol-type phenolic resin and the corresponding mesoporous carbon materials were synthesized by using poly(ethylene oxide-b-caprolactone) (PEO-b-PCL) diblock copolymer as a soft template. The self-assembled mesoporous phenolic resin was found to form only in a specific resol concentration range of 40-70 wt % due to an intriguing balance of hydrogen-bonding interactions in the resol/PEO-b-PCL mixtures. Furthermore, morphological transitions of the mesostructures from disordered to gyroid to cylindrical and finally to disordered micelle structure were observed with increasing resol concentration. By calcination under nitrogen atmosphere at 800 °C, the bicontinuous mesostructured gyroid phenolic resin could be converted to mesoporous carbon with large pore size without collapse of the original mesostructure. Furthermore, post-treatment of the mesoporous gyroid phenolic resin with melamine gave rise to N-doped mesoporous carbon with unique electronic properties for realizing high CO2 adsorption capacity (6.72 mmol g-1 at 0 °C).
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Affiliation(s)
- Wei-Cheng Chu
- Materials and Optoelectronic Science, National Sun Yat-Sen University, Center for Nanoscience and Nanotechnology, Kaohsiung, 804, Taiwan
| | - Bishnu Prasad Bastakoti
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Yusuf Valentino Kaneti
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Jheng-Guang Li
- Materials and Optoelectronic Science, National Sun Yat-Sen University, Center for Nanoscience and Nanotechnology, Kaohsiung, 804, Taiwan.,R&D Department, Asia Carbons & Technology Inc., Taoyuan, Taiwan
| | - Hatem R Alamri
- Physics Department, Jamoum University College, Umm Al-Qura University, Makkah, 21955, Saudi Arabia
| | - Zeid A Alothman
- Advanced Materials Research Chair, Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Yusuke Yamauchi
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.,Advanced Materials Research Chair, Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.,Australian Institute for Innovative Materials (AIIM), University of Wollongong, Squires Way, North Wollongong, NSW, 2500, Australia
| | - Shiao-Wei Kuo
- Materials and Optoelectronic Science, National Sun Yat-Sen University, Center for Nanoscience and Nanotechnology, Kaohsiung, 804, Taiwan.,Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan
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13
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Huang J, Wang RY, Xu JT, Fan ZQ. Hydrogen-bonding induced abnormal microphase separation behavior of poly(ethylene oxide)-b-poly(tert-butyl acrylate-co-acrylic acid) block copolymers. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.07.045] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Chu WC, Lin WS, Kuo SW. Flexible Epoxy Resin Formed Upon Blending with a Triblock Copolymer through Reaction-Induced Microphase Separation. MATERIALS 2016; 9:ma9060449. [PMID: 28773571 PMCID: PMC5456746 DOI: 10.3390/ma9060449] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Revised: 05/25/2016] [Accepted: 06/01/2016] [Indexed: 12/04/2022]
Abstract
In this study, we used diglycidyl ether bisphenol A (DGEBA) as a matrix, the ABA block copolymer poly(ethylene oxide–b–propylene oxide–b–ethylene oxide) (Pluronic F127) as an additive, and diphenyl diaminosulfone (DDS) as a curing agent to prepare flexible epoxy resins through reaction-induced microphase separation (RIMPS). Fourier transform infrared spectroscopy confirmed the existence of hydrogen bonding between the poly(ethylene oxide) segment of F127 and the OH groups of the DGEBA resin. Small-angle X-ray scattering, atomic force microscopy, and transmission electron microscopy all revealed evidence for the microphase separation of F127 within the epoxy resin. Glass transition temperature (Tg) phenomena and mechanical properties (modulus) were determined through differential scanning calorimetry and dynamic mechanical analysis, respectively, of samples at various blend compositions. The modulus data provided evidence for the formation of wormlike micelle structures, through a RIMPS mechanism, in the flexible epoxy resin upon blending with the F127 triblock copolymer.
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Affiliation(s)
- Wei-Cheng Chu
- Center for Nanoscience and Nanotechnology, Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
| | - Wei-Sheng Lin
- Center for Nanoscience and Nanotechnology, Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
| | - Shiao-Wei Kuo
- Center for Nanoscience and Nanotechnology, Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
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15
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Palacios JK, Mugica A, Zubitur M, Iturrospe A, Arbe A, Liu G, Wang D, Zhao J, Hadjichristidis N, Müller AJ. Sequential crystallization and morphology of triple crystalline biodegradable PEO-b-PCL-b-PLLA triblock terpolymers. RSC Adv 2016. [DOI: 10.1039/c5ra25812j] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The sequential crystallization of poly(ethylene oxide)-b-poly(ε-caprolactone)-b-poly(l-lactide) (PEO-b-PCL-b-PLLA) triblock terpolymers, in which the three blocks are able to crystallize separately and sequentially from the melt, is presented.
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16
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Tsai SC, Lin YC, Lin EL, Chiang YW, Kuo SW. Hydrogen bonding strength effect on self-assembly supramolecular structures of diblock copolymer/homopolymer blends. Polym Chem 2016. [DOI: 10.1039/c6py00195e] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The steric hindrance effect on the hydrogen bonding strength and self-assembly supramolecular structures of the PS-b-PVPh diblock copolymer when blended with P4VP and P2VP homopolymers was investigated.
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Affiliation(s)
- Shih-Chi Tsai
- Department of Materials and Optoelectronic Science
- Center for Functional Polymers and Supramolecular Materials
- National Sun Yat-Sen University
- Kaohsiung
- Taiwan
| | - Yung-Chih Lin
- Department of Materials and Optoelectronic Science
- Center for Functional Polymers and Supramolecular Materials
- National Sun Yat-Sen University
- Kaohsiung
- Taiwan
| | - En-Li Lin
- Department of Materials and Optoelectronic Science
- Center for Functional Polymers and Supramolecular Materials
- National Sun Yat-Sen University
- Kaohsiung
- Taiwan
| | - Yeo-Wan Chiang
- Department of Materials and Optoelectronic Science
- Center for Functional Polymers and Supramolecular Materials
- National Sun Yat-Sen University
- Kaohsiung
- Taiwan
| | - Shiao-Wei Kuo
- Department of Materials and Optoelectronic Science
- Center for Functional Polymers and Supramolecular Materials
- National Sun Yat-Sen University
- Kaohsiung
- Taiwan
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17
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Chiang YW, Hu YY, Li JN, Huang SH, Kuo SW. Trilayered Single Crystals with Epitaxial Growth in Poly(ethylene oxide)-block-poly(ε-caprolactone)-block-poly(l-lactide) Thin Films. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b02042] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Yeo-Wan Chiang
- Department
of Materials and
Optoelectronic Science, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - You-Yuan Hu
- Department
of Materials and
Optoelectronic Science, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - Jhen-Ning Li
- Department
of Materials and
Optoelectronic Science, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - Shih-Hung Huang
- Department
of Materials and
Optoelectronic Science, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - Shiao-Wei Kuo
- Department
of Materials and
Optoelectronic Science, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
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18
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Hybrid Mesoporous Silicas and Microporous POSS-Based Frameworks Incorporating Evaporation-Induced Self-Assembly. NANOMATERIALS 2015; 5:1087-1101. [PMID: 28347053 PMCID: PMC5312908 DOI: 10.3390/nano5021087] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 06/11/2015] [Indexed: 11/29/2022]
Abstract
We fabricated a series of mesoporous silicas and mesoporous organosilicates with hierarchical porosity through evaporation-induced self-assembly using Pluronic F127 as a template in this study. We could tailor the mesophase of each mesoporous silica sample by varying the weight ratio of its two silica sources: tetraethyl orthosilicate (TEOS) and triethoxysilane hydrosilylated octavinyl polyhedral oligomeric silsesquioxane (OV-POSS-SILY). The mesophases ranged from an ordered body-centered cubic (bcc) structure (TEOS alone) to ordered face-centered cubic (fcc) structure (10 and 20 wt.% of OV-POSS-SILY) and finally to disordered spherical pores (≥30 wt.% of OV-POSS-SILY). We used small-angle X-ray scattering (SAXS) and transmission electron microscopy (TEM) to study the transformations of these mesophases, while N2 isotherm sorption curves revealed the porosities of these mesoporous silicate samples. Moreover, 29Si CP/MAS solid state nuclear magnetic resonance spectroscopy allowed us to analyze the compositions of the POSS-containing silicate frameworks. Such functional mesoporous silica samples incorporating microporous POSS building units have potential applications in various systems, including optical and electronic devices.
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19
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Altukhov O, Kuo SW. Crystallization ability of poly(lactic acid) block segments in templating poly(ethylene oxide-b-lactic acid) diblock copolymers affects the resulting structures of mesoporous silicas. RSC Adv 2015. [DOI: 10.1039/c5ra01096a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Eliminating the crystallization ability of PLLA to amorphous PLA block segment allowed us to obtain long-range-ordered mesoporous materials.
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Affiliation(s)
- Oleksii Altukhov
- Department of Materials and Optoelectronic Science
- Center for Functional Polymers and Supramolecular Materials
- National Sun Yat-Sen University
- Kaohsiung
- Taiwan
| | - Shiao-Wei Kuo
- Department of Materials and Optoelectronic Science
- Center for Functional Polymers and Supramolecular Materials
- National Sun Yat-Sen University
- Kaohsiung
- Taiwan
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