1
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Yan Z, Zhang R. Measurement of spin-lattice relaxation times in multiphase polymer systems. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2023; 357:107597. [PMID: 37984029 DOI: 10.1016/j.jmr.2023.107597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/25/2023] [Accepted: 11/13/2023] [Indexed: 11/22/2023]
Abstract
Solid-state Nuclear Magnetic Resonance (NMR) has emerged as a pivotal technique for unraveling the microstructure and dynamics of intricate polymer and biological materials. Within this context, site-specific proton spin-lattice relaxation times in the laboratory frame (T1) and rotating frame (T1ρ) have become indispensable tools for investigating phase separation structures and molecular dynamics in multiphase polymer systems. Notably, the site-specific measurement of proton T1 and T1ρ is usually achieved via 13C detection in polymers, where 1H polarization is typically transferred to 13C via cross polarization (CP). Nevertheless, CP relies on the 1H-13C heteronuclear dipolar couplings, and thus it does not work well for the mobile components. In this study, via the integration of CP and RINEPT (refocused insensitive nuclei enhanced by polarization transfer), we propose a robust approach for the measurement of site-specific proton T1 and T1ρ in multiphase polymers. It overcomes the limitation of CP on transferring 1H polarization to 13C in mobile components, and thus enables simultaneous determination of site-specific proton T1 and T1ρ in rigid and mobile components in multiphase polymers in a single experiment. Such experiment can also be used for dynamics-based spectral editing due to the dynamic selectivity of CP- and RINEPT-based polarization transfer process. The proposed experiments are well demonstrated on three typical multiphase polymer systems, poly(methyl methacrylate)/polybutadiene (PMMA/PB) polymer blend, polyurethane (PU) and polystyrene-polybutadiene-polystyrene (SBS) elastomers. We envisage the proposed experiments can be a universal avenue for structural and dynamic elucidation of multiphase polymers containing both rigid and mobile components.
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Affiliation(s)
- Zhiwei Yan
- South China Advanced Institute for Soft Matter Science and Technology (AISMST), School of Emergent Soft Matter (SESM), South China University of Technology, Guangzhou, 510640, PR China
| | - Rongchun Zhang
- South China Advanced Institute for Soft Matter Science and Technology (AISMST), School of Emergent Soft Matter (SESM), South China University of Technology, Guangzhou, 510640, PR China; Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou, 510640, PR China.
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2
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Nanostructuring Biobased Epoxy Resin with PEO-PPO-PEO Block Copolymer. Polymers (Basel) 2023; 15:polym15051216. [PMID: 36904457 PMCID: PMC10007555 DOI: 10.3390/polym15051216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/23/2023] [Accepted: 02/24/2023] [Indexed: 03/04/2023] Open
Abstract
A biobased diglycidyl ether of vanillin (DGEVA) epoxy resin was nanostructured by poly(ethylene oxide-b-propylene oxide-b-ethylene oxide) (PEO-PPO-PEO) triblock copolymer. Due to the miscibility/immiscibility properties of the triblock copolymer in DGEVA resin, different morphologies were obtained depending on the triblock copolymer amount. A hexagonally packed cylinder morphology was kept until reaching 30 wt% of PEO-PPO-PEO content, while a more complex three-phase morphology was obtained for 50 wt%, in which large worm-like PPO domains appear surrounded by two different phases, one of them rich in PEO and another phase rich in cured DGEVA. UV-vis measurements show that the transmittance is reduced with the increase in triblock copolymer content, especially at 50 wt%, probably due to the presence of PEO crystals detected by calorimetry.
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3
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Understanding the molecular origin of the superior toughness of polyamide-6/polyketone blends by solid-state NMR spectroscopy. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125324] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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4
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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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5
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Zhou Q, Liu Q, Yu Y, Zhuang Y, Lv Y, Xiao H, Song N, Ni L. Morphological evolution and mechanical properties of an “anchor chain” nanodomain structure of a reactive amphiphilic triblock copolymer in epoxy resin. Polym Chem 2020. [DOI: 10.1039/d0py00365d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A epoxy-reactive poly(3,4-epoxycyclohexylmethyl methacrylate)-block-poly(dimethylsiloxane)-block-poly(3,4-epoxycyclohexylmethyl methacrylate) (PMETHB-b-PDMS-b-PMETHB) triblock can self-assemble in epoxy resin to form “anchor-chain” nanodomains.
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Affiliation(s)
- Quan Zhou
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Qi Liu
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yueru Yu
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yuxiao Zhuang
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yizhe Lv
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Hanliang Xiao
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Ning Song
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Lizhong Ni
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
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6
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Parisse S, Petit J, Forzy A, Lecardeur A, Beaugrand S, Palmas P. Binder and Interphase Microstructure in a Composite Material Characterized by Scanning Electron Microscopy and NMR Spin Diffusion Experiments. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900310] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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7
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Kaflak A, Moskalewski S, Kolodziejski W. The solid-state proton NMR study of bone using a dipolar filter: apatite hydroxyl contentversusanimal age. RSC Adv 2019; 9:16909-16918. [PMID: 35516370 PMCID: PMC9064436 DOI: 10.1039/c9ra01902b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 05/13/2019] [Indexed: 12/24/2022] Open
Abstract
The hydroxyl content of bone apatite mineral has been measured using proton solid-state NMR performed with a multiple-pulse dipolar filter under slow magic angle spinning (MAS). This new method succeeded in resolving and relatively enhancing the main hydroxyl peak at ca. 0 ppm from whole bone, making it amenable to rigorous quantitative analysis. The proposed methodology, involving line fitting, the measurement of the apatite concentration in the studied material and adequate calibration, was proved to be convenient and suitable for monitoring bone mineral hydroxylation in different species and over the lifetime of the animal. It was found that the hydroxyl content in the cranial bone mineral of pig and rats remained in the 5–10% range, with reference to stoichiometric hydroxyapatite. In rats, the hydroxyl content showed a non-monotonic increase with age, which was governed by biological processes rather than by chemical, thermodynamically driven apatite maturation. Mineral hydroxylation in whole bone can be accurately studied using proton MAS NMR with a multiple-pulse dipolar filter.![]()
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Affiliation(s)
- Agnieszka Kaflak
- Medical University of Warsaw
- Faculty of Pharmacy
- Department of Analytical Chemistry and Biomaterials
- Warsaw 02-097
- Poland
| | - Stanisław Moskalewski
- Medical University of Warsaw
- Department of Histology and Embryology
- Warsaw 02-004
- Poland
| | - Waclaw Kolodziejski
- Medical University of Warsaw
- Faculty of Pharmacy
- Department of Analytical Chemistry and Biomaterials
- Warsaw 02-097
- Poland
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8
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Huang CF, Chen WH, Aimi J, Huang YS, Venkatesan S, Chiang YW, Huang SH, Kuo SW, Chen T. Synthesis of well-defined PCL-b-PnBA-b-PMMA ABC-type triblock copolymers: toward the construction of nanostructures in epoxy thermosets. Polym Chem 2018. [DOI: 10.1039/c8py01357h] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel PCL-b-PnBA-b-PMMA was designed and applied to construct ordered nanostructures within epoxy thermosets.
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Affiliation(s)
- Chih-Feng Huang
- Department of Chemical Engineering
- National Chung Hsing University
- Taichung 402-27
- Taiwan
- Research Center for Sustainable Energy and Nanotechnology
| | - Wen-Hua Chen
- Department of Chemical Engineering
- National Chung Hsing University
- Taichung 402-27
- Taiwan
| | - Junko Aimi
- Molecular Design & Function Group
- Research Center for Functional Materials
- National Institute for Materials Science
- Tsukuba
- Japan
| | - Yi-Shen Huang
- Department of Chemical Engineering
- National Chung Hsing University
- Taichung 402-27
- Taiwan
| | - Sathesh Venkatesan
- Department of Chemical Engineering
- National Chung Hsing University
- Taichung 402-27
- Taiwan
| | - Yeo-Wan Chiang
- Department of Materials and Optoelectronic Science
- Center for Nanoscience and Nanotechnology
- National Sun Yat-Sen University
- Kaohsiung 804-24
- Taiwan
| | - Shih-Hung Huang
- Department of Materials and Optoelectronic Science
- Center for Nanoscience and Nanotechnology
- National Sun Yat-Sen University
- Kaohsiung 804-24
- Taiwan
| | - Shiao-Wei Kuo
- Department of Materials and Optoelectronic Science
- Center for Nanoscience and Nanotechnology
- National Sun Yat-Sen University
- Kaohsiung 804-24
- Taiwan
| | - Tao Chen
- Key Laboratory of Bio-Based Polymeric Materials Technology and Application of Zhejiang Province
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo 315201
- China
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9
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Carrasco-Hernandez S, Gutierrez J, Tercjak A. PE-b-PEO block copolymer nanostructured thermosetting systems as template for TiO 2 nanoparticles. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.06.044] [Citation(s) in RCA: 3] [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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10
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Zhai Y, Zhang R, Yang W, Yang M. Effects of interphase on the dispersion of MWCNTs in ethylene-α-octene copolymers revealed by solid-state NMR spectroscopy. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.02.076] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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11
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Asada M, Oshita S, Morishita Y, Nakashima Y, Kunimitsu Y, Kishi H. Effect of miscible PMMA chain length on disordered morphologies in epoxy/PMMA-b-PnBA-b-PMMA blends by in situ simultaneous SAXS/DSC. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.10.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Parameswaranpillai J, Krishnan Sidhardhan S, Jose S, Siengchin S, Pionteck J, Magueresse A, Grohens Y, Hameed N. Reaction-induced phase separation and resulting thermomechanical and surface properties of epoxy resin/poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) blends cured with 4,4′-diaminodiphenylsulfone. J Appl Polym Sci 2016. [DOI: 10.1002/app.44406] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Jyotishkumar Parameswaranpillai
- Department of Polymer Science and Rubber Technology; Cochin University of Science and Technology; Cochin 682022 Kerala India
| | - Sisanth Krishnan Sidhardhan
- Department of Polymer Science and Rubber Technology; Cochin University of Science and Technology; Cochin 682022 Kerala India
| | - Seno Jose
- Government College; Kottayam 686013 Kerala India
| | - Suchart Siengchin
- Department of Materials and Production Engineering; King Mongkut's University of Technology North Bangkok 1518 Pracharaj 1, Wongsawang Road; Bangsue Bangkok 10800 Thailand
| | - Jürgen Pionteck
- Leibniz Institute of Polymer Research Dresden; Hohe Strasse 6 01069 Dresden Germany
| | | | - Yves Grohens
- FRE CNRS 3744, IRDL, Univ. Bretagne Sud; 56100 Lorient France
| | - Nishar Hameed
- Factory of the Future, Swinburne University of Technology; Hawthorn Australia
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13
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Lu S, Zhang R, Wang X, Sun P, Lv W, Liu Q, Jia N. Effect of PEO molecular weight on the miscibility and dynamics in epoxy/PEO blends. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2015; 38:118. [PMID: 26577817 DOI: 10.1140/epje/i2015-15118-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Accepted: 10/23/2015] [Indexed: 06/05/2023]
Abstract
In this work, the effect of poly(ethylene oxide) (PEO) molecular weight in blends of epoxy (ER) and PEO on the miscibility, inter-chain weak interactions and local dynamics were systematically investigated by multi-frequency temperature modulation DSC and solid-state NMR techniques. We found that the molecular weight (M(w)) of PEO was a crucial factor in controlling the miscibility, chain dynamics and hydrogen bonding interactions between PEO and ER. A critical PEO molecular weight (M(crit)) around 4.5k was found. PEO was well miscible with ER when the molecular weight was below M(crit), where the chain motion of PEO was restricted due to strong inter-chain hydrogen bonding interactions. However, for the blends with high molecular weight PEO (M(w) > M(crit)), the miscibility between PEO and ER was poor, and most of PEO chains were considerably mobile. Finally, polarization inversion spin exchange at magic angle (PISEMA) solid-state NMR experiment further revealed the different mobility of the PEO in ER/PEO blends with different molecular weight of PEO at molecular level. Based on the DSC and NMR results, a tentative model was proposed to illustrate the miscibility in ER/PEO blends.
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Affiliation(s)
- Shoudong Lu
- Patent Examination Cooperation Center of the Patent Office, SIPO, Beijing, P. R. China
| | - Rongchun Zhang
- Key Laboratory of Functional Polymer Materials, Ministry of Education; College of Chemistry and School of Physics, Nankai University, 300071, Tianjin, P. R. China
| | - Xiaoliang Wang
- Key Laboratory of High Performance Polymer Materials and Technology, Ministry of Education, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, 210093, Nanjing, P. R. China.
| | - Pingchuan Sun
- Key Laboratory of Functional Polymer Materials, Ministry of Education; College of Chemistry and School of Physics, Nankai University, 300071, Tianjin, P. R. China.
| | - Weifeng Lv
- Research Institute of Petroleum Exploration & Development, PetroChina, 100083, Beijing, P. R. China
| | - Qingjie Liu
- Research Institute of Petroleum Exploration & Development, PetroChina, 100083, Beijing, P. R. China
| | - Ninghong Jia
- Research Institute of Petroleum Exploration & Development, PetroChina, 100083, Beijing, P. R. China
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14
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15
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Zhang R, Ramamoorthy A. Dynamics-based selective 2D (1)H/(1)H chemical shift correlation spectroscopy under ultrafast MAS conditions. J Chem Phys 2015; 142:204201. [PMID: 26026440 PMCID: PMC4449354 DOI: 10.1063/1.4921381] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Accepted: 05/08/2015] [Indexed: 01/30/2023] Open
Abstract
Dynamics plays important roles in determining the physical, chemical, and functional properties of a variety of chemical and biological materials. However, a material (such as a polymer) generally has mobile and rigid regions in order to have high strength and toughness at the same time. Therefore, it is difficult to measure the role of mobile phase without being affected by the rigid components. Herein, we propose a highly sensitive solid-state NMR approach that utilizes a dipolar-coupling based filter (composed of 12 equally spaced 90° RF pulses) to selectively measure the correlation of (1)H chemical shifts from the mobile regions of a material. It is interesting to find that the rotor-synchronized dipolar filter strength decreases with increasing inter-pulse delay between the 90° pulses, whereas the dipolar filter strength increases with increasing inter-pulse delay under static conditions. In this study, we also demonstrate the unique advantages of proton-detection under ultrafast magic-angle-spinning conditions to enhance the spectral resolution and sensitivity for studies on small molecules as well as multi-phase polymers. Our results further demonstrate the use of finite-pulse radio-frequency driven recoupling pulse sequence to efficiently recouple weak proton-proton dipolar couplings in the dynamic regions of a molecule and to facilitate the fast acquisition of (1)H/(1)H correlation spectrum compared to the traditional 2D NOESY (Nuclear Overhauser effect spectroscopy) experiment. We believe that the proposed approach is beneficial to study mobile components in multi-phase systems, such as block copolymers, polymer blends, nanocomposites, heterogeneous amyloid mixture of oligomers and fibers, and other materials.
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Affiliation(s)
- Rongchun Zhang
- Biophysics and Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, USA
| | - Ayyalusamy Ramamoorthy
- Biophysics and Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, USA
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16
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Cano L, Gutierrez J, Tercjak A. Enhancement of the mechanical properties at the macro and nanoscale of thermosetting systems modified with a polystyrene-block-polymethyl methacrylate block copolymer. RSC Adv 2015. [DOI: 10.1039/c5ra21857h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An epoxy-based thermosetting system was modified with varying contents of polystyrene-block-polymethyl methacrylate (PS-b-PMMA) block copolymer by two methods and cured with a 4,4′-methylenebis(3-chloro-2,6-diethylaniline) (MCDEA) curing agent.
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Affiliation(s)
- Laida Cano
- Group ‘Materials + Technologies’
- Chemical Engineering and Environmental Department
- Polytechnic School
- University of the Basque Country (UPV/EHU)
- 20018 Donostia-San Sebastián
| | - Junkal Gutierrez
- Group ‘Materials + Technologies’
- Chemical Engineering and Environmental Department
- Polytechnic School
- University of the Basque Country (UPV/EHU)
- 20018 Donostia-San Sebastián
| | - Agnieszka Tercjak
- Group ‘Materials + Technologies’
- Chemical Engineering and Environmental Department
- Polytechnic School
- University of the Basque Country (UPV/EHU)
- 20018 Donostia-San Sebastián
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17
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Wang F, Zhang R, Wu Q, Chen T, Sun P, Shi AC. Probing the nanostructure, interfacial interaction, and dynamics of chitosan-based nanoparticles by multiscale solid-state NMR. ACS APPLIED MATERIALS & INTERFACES 2014; 6:21397-21407. [PMID: 25372426 DOI: 10.1021/am5064052] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Chitosan-based nanoparticles (NPs) are widely used in drug and gene delivery, therapy, and medical imaging, but a molecular-level understanding of the internal morphology and nanostructure size, interface, and dynamics, which is critical for building fundamental knowledge for the precise design and efficient biological application of the NPs, remains a great challenge. Therefore, the availability of a multiscale (0.1-100 nm) and nondestructive analytical technique for examining such NPs is of great importance for nanotechnology. Herein, we present a new multiscale solid-state NMR approach to achieve this goal for the investigation of chitosan-poly(N-3-acrylamidophenylboronic acid) NPs. First, a recently developed (13)C multiple cross-polarization magic-angle spinning (MAS) method enabled fast quantitative determination of the NPs' composition and detection of conformational changes in chitosan. Then, using an improved (1)H spin-diffusion method with (13)C detection and theoretical simulations, the internal morphology and nanostructure size were quantitatively determined. The interfacial coordinated interaction between chitosan and phenylboronic acid was revealed by one-dimensional MAS and two-dimensional (2D) triple-quantum MAS (11)B NMR. Finally, dynamic-editing (13)C MAS and 2D (13)C-(1)H wide-line separation experiments provided details regarding the componential dynamics of the NPs in the solid and swollen states. On the basis of these NMR results, a model of the unique nanostructure, interfacial interaction, and componential dynamics of the NPs was proposed.
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Affiliation(s)
- Fenfen Wang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education and College of Chemistry, State Key Laboratory of Medicinal Chemical Biology, Nankai University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300071, China
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18
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Shen Y, Rong-chun Z, Ping-chuan S. Nano-silica Induced Crystallization in Polyurethane Elastomers. ACTA POLYM SIN 2014. [DOI: 10.3724/sp.j.1105.2014.13156] [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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19
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Cano L, Builes DH, Tercjak A. Morphological and mechanical study of nanostructured epoxy systems modified with amphiphilic poly(ethylene oxide-b-propylene oxide-b-ethylene oxide)triblock copolymer. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.01.005] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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20
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Builes DH, Hernández-Ortiz JP, Corcuera MA, Mondragon I, Tercjak A. Effect of poly(ethylene oxide) homopolymer and two different poly(ethylene oxide-b-poly(propylene oxide)-b-poly(ethylene oxide) triblock copolymers on morphological, optical, and mechanical properties of nanostructured unsaturated polyester. ACS APPLIED MATERIALS & INTERFACES 2014; 6:1073-1081. [PMID: 24354274 DOI: 10.1021/am4046266] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Novel nanostructured unsaturated polyester resin-based thermosets, modified with poly(ethylene oxide) (PEO), poly(propylene oxide) (PPO), and two poly(ethylene oxide-b-propylene oxide-b-ethylene oxide) block copolymers (BCP), were developed and analyzed. The effects of molecular weights, blocks ratio, and curing temperatures on the final morphological, optical, and mechanical properties were reported. The block influence on the BCP miscibility was studied through uncured and cured mixtures of unsaturated polyester (UP) resins with PEO and PPO homopolymers having molecular weights similar to molecular weights of the blocks of BCP. The final morphology of the nanostructured thermosetting systems, containing BCP or homopolymers, was investigated, and multiple mechanisms of nanostructuration were listed and explained. By considering the miscibility of each block before and after curing, it was determined that the formation of the nanostructured matrices followed a self-assembly mechanism or a polymerization-induced phase separation mechanism. The miscibility between PEO or PPO blocks with one of two phases of UP matrix was highlighted due to its importance in the final thermoset properties. Relationships between the final morphology and thermoset optical and mechanical properties were examined. The mechanisms and physics behind the morphologies lead toward the design of highly transparent, nanostructured, and toughened thermosetting UP systems.
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Affiliation(s)
- Daniel H Builes
- Group 'Materials + Technologies', Polytechnic School, Dpto. Ingeniería Química y M. Ambiente, University of Basque Country (UPV/EHU) , Pza. Europa 1, 20018 Donostia-San Sebastián, Spain
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21
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Zhang R, Yu S, Chen S, Wu Q, Chen T, Sun P, Li B, Ding D. Reversible Cross-Linking, Microdomain Structure, and Heterogeneous Dynamics in Thermally Reversible Cross-Linked Polyurethane as Revealed by Solid-State NMR. J Phys Chem B 2014; 118:1126-37. [DOI: 10.1021/jp409893f] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Rongchun Zhang
- School
of Physics, Nankai University, Tianjin, 300071, P. R. China
| | - Shen Yu
- Key
Laboratory of Functional Polymer Materials, Ministry of Education,
College of Chemistry, Nankai University, and Collaborative Innovation Center of Chemical Science and Engineering
(Tianjin), Tianjin, 300071, P. R. China
| | - Shengli Chen
- Key
Laboratory of Functional Polymer Materials, Ministry of Education,
College of Chemistry, Nankai University, and Collaborative Innovation Center of Chemical Science and Engineering
(Tianjin), Tianjin, 300071, P. R. China
| | - Qiang Wu
- Key
Laboratory of Functional Polymer Materials, Ministry of Education,
College of Chemistry, Nankai University, and Collaborative Innovation Center of Chemical Science and Engineering
(Tianjin), Tianjin, 300071, P. R. China
| | - Tiehong Chen
- Key
Laboratory of Functional Polymer Materials, Ministry of Education,
College of Chemistry, Nankai University, and Collaborative Innovation Center of Chemical Science and Engineering
(Tianjin), Tianjin, 300071, P. R. China
| | - Pingchuan Sun
- Key
Laboratory of Functional Polymer Materials, Ministry of Education,
College of Chemistry, Nankai University, and Collaborative Innovation Center of Chemical Science and Engineering
(Tianjin), Tianjin, 300071, P. R. China
| | - Baohui Li
- School
of Physics, Nankai University, Tianjin, 300071, P. R. China
| | - Datong Ding
- School
of Physics, Nankai University, Tianjin, 300071, P. R. China
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22
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Zhu L, Gu Q, Sun P, Chen W, Wang X, Xue G. Characterization of the mobility and reactivity of water molecules on TiO2 nanoparticles by 1H solid-state nuclear magnetic resonance. ACS APPLIED MATERIALS & INTERFACES 2013; 5:10352-10356. [PMID: 24060268 DOI: 10.1021/am403449j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Understanding interfacial water behavior is essential to improving our understanding of the surface chemistry and interfacial properties of nanomaterials. Here using 1H solid-state nuclear magnetic resonance (1H SSNMR), we successfully monitored ligand exchange reaction between oleylamine (OLA) and adsorbed water on titanium dioxide nanoparticles (TiO2 NPs). Three different types of interfacial waters with different reactivities were distinguished. The mobility of the adsorbed water molecules was characterized by dipolar filtered 1H SSNMR. Our experimental results demonstrate that the adsorbed water can be categorized into three different layers: (i) rigid water species with restricted mobility closest to the surface of TiO2 NPs, (ii) less mobile water species weakly confined on TiO2 NPs, and (iii) water molecules with high mobility. Water in the third layer could be replaced by OLA, while water in the first and second layers remained intact. The finding that the interfacial water with the highest mobility has the strongest reactivity has guiding significance for tailoring the hydrophilic and hydrophobic properties of TiO2 NPs.
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Affiliation(s)
- Lili Zhu
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, The State Key Laboratory of Coordination Chemistry, Nanjing University , Nanjing 210093, P. R. Chin a
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23
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George SM, Puglia D, Kenny JM, Causin V, Parameswaranpillai J, Thomas S. Morphological and Mechanical Characterization of Nanostructured Thermosets from Epoxy and Styrene-block-Butadiene-block-Styrene Triblock Copolymer. Ind Eng Chem Res 2013. [DOI: 10.1021/ie400813v] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sajeev Martin George
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarshini Hills P.O.,
Kottayam, Kerala 686560, India
| | - Debora Puglia
- Materials Engineering Centre, University of Perugia, Terni, Italy
| | - Jose M. Kenny
- Materials Engineering Centre, University of Perugia, Terni, Italy
| | - Valerio Causin
- Dipartimento
di Scienze Chimiche, Università degli Studi di Padova, Padova, Italy
| | - Jyotishkumar Parameswaranpillai
- Department of Polymer Science
and Rubber Technology, Cochin University of Science and Technology, Cochin 682022, Kerala, India
| | - Sabu Thomas
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarshini Hills P.O.,
Kottayam, Kerala 686560, India
- Centre for Nanoscience & Nanotechnology, Mahatma Gandhi University, Priyadarshini Hills, Kottayam, Kerala 686560, India
- Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam Selongor,
Malaysia
- Center of Excellence for Polymer Materials and Technologies, Tehnoloski park
24, 1000 Ljubljana, Slovenia
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24
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Gao Y, Yu C, Chen M, Wang X, Zhou D, Xue G. Thermo-reversible gelation of atactic poly(methyl methacrylate) in poly(ethylene glycol) oligomers. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2013; 36:9851. [PMID: 23605566 DOI: 10.1140/epje/i2013-13037-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Revised: 02/06/2013] [Accepted: 03/11/2013] [Indexed: 06/02/2023]
Abstract
The temperature-concentration behavior of physical gel by atactic poly(methyl methacrylate) (aPMMA) in poly(ethylene glycol) oligomer (PEG400) was investigated. A liquid-liquid demixing interferes with a glass transition during cooling. The combination of demixing and T g leads to the formation of amorphous gels at low temperature. We suggest that the gelation of aPMMA/PEG400 is a glassy gel, in which short-range attractive depletion interaction in the polymer/oligomer system was the driving force at molecular level.
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Affiliation(s)
- Yun Gao
- Department of Polymer Science and Engineering, the School of Chemistry and Chemical Engineering, The State Key Laboratory of Coordination Chemistry, Nanjing University, 210093 Nanjing, P.R. China
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25
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Zhu L, Wang X, Gu Q, Chen W, Sun P, Xue G. Confinement-Induced Deviation of Chain Mobility and Glass Transition Temperature for Polystyrene/Au Nanoparticles. Macromolecules 2013. [DOI: 10.1021/ma302643y] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lili Zhu
- Department of Polymer Science
and Engineering, The School of Chemistry and Chemical Engineering,
The State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, P. R. China
| | - Xiaoliang Wang
- Department of Polymer Science
and Engineering, The School of Chemistry and Chemical Engineering,
The State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, P. R. China
| | - Qiang Gu
- Department of Polymer Science
and Engineering, The School of Chemistry and Chemical Engineering,
The State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, P. R. China
| | - Wei Chen
- Department of Polymer Science
and Engineering, The School of Chemistry and Chemical Engineering,
The State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, P. R. China
| | - Pingchuan Sun
- Key Laboratory of Functional
Polymer Materials, Ministry of Education, Nankai University, Tianjin 300071, P. R. China
| | - Gi Xue
- Department of Polymer Science
and Engineering, The School of Chemistry and Chemical Engineering,
The State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, P. R. China
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26
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Liu Y. Polymerization-induced phase separation and resulting thermomechanical properties of thermosetting/reactive nonlinear polymer blends: A review. J Appl Polym Sci 2012. [DOI: 10.1002/app.38721] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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27
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Builes DH, Tercjak A, Mondragon I. Nanostructured unsaturated polyester modified with poly[(ethylene oxide)-b-(propylene oxide)-b-(ethylene oxide)] triblock copolymer. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.06.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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28
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Declet-Perez C, Redline EM, Francis LF, Bates FS. Role of Localized Network Damage in Block Copolymer Toughened Epoxies. ACS Macro Lett 2012; 1:338-342. [PMID: 35578534 DOI: 10.1021/mz200219y] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The underlying mechanisms responsible for the toughening of block copolymer modified thermoset epoxies are not completely understood. A current theory targets cavitation of the rubbery cores in dispersed micelles as the key event that triggers shear yielding, resulting in enhanced toughness. To evaluate this hypothesis, we prepared spherical micelle forming block copolymers with rubbery cores (prone to cavitation) and glassy cores (unable to cavitate). Surprisingly, both systems enhance fracture toughness, although the rubbery core micelles outperform the glassy core counterparts. This finding challenges previous deductions regarding the toughening mechanism. We propose that the mechanical integrity of the region immediately surrounding the micelle core is compromised by the presence of the corona blocks, facilitating local deformation of the matrix. We speculate that the compliant nature of the rubber amplifies this effect.
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Affiliation(s)
- Carmelo Declet-Perez
- Department of Chemical
Engineering and
Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Erica M. Redline
- Department of Chemical
Engineering and
Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Lorraine F. Francis
- Department of Chemical
Engineering and
Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Frank S. Bates
- Department of Chemical
Engineering and
Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
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29
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Fu W, Sun P. Solid state NMR study of hydrogen bonding, miscibility, and dynamics in multiphase polymer systems. ACTA ACUST UNITED AC 2011. [DOI: 10.1007/s11458-011-0254-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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30
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Zhang R, He X, Fu W, Chen T, Sun P, Li B, Ding D. Efficient Identification of Different Types of Carbons in Organic Solids by 2D Solid-State NMR Spectroscopy. J Phys Chem A 2011; 115:11665-70. [DOI: 10.1021/jp2071293] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rongchun Zhang
- Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry and ‡School of Physics, Nankai University, Tianjin 300071, People's Republic of China
| | - Xin He
- Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry and ‡School of Physics, Nankai University, Tianjin 300071, People's Republic of China
| | - Weigui Fu
- Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry and ‡School of Physics, Nankai University, Tianjin 300071, People's Republic of China
| | - Tiehong Chen
- Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry and ‡School of Physics, Nankai University, Tianjin 300071, People's Republic of China
| | - Pingchuan Sun
- Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry and ‡School of Physics, Nankai University, Tianjin 300071, People's Republic of China
| | - Baohui Li
- Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry and ‡School of Physics, Nankai University, Tianjin 300071, People's Republic of China
| | - Datong Ding
- Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry and ‡School of Physics, Nankai University, Tianjin 300071, People's Republic of China
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31
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32
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Characterization of nanostructured epoxy networks modified with isocyanate-terminated liquid polybutadiene. J Colloid Interface Sci 2011; 358:338-46. [DOI: 10.1016/j.jcis.2011.03.030] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2010] [Revised: 03/05/2011] [Accepted: 03/09/2011] [Indexed: 11/21/2022]
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33
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Zhu H, Graf R, Hou G, Zhao Y, Wang D, Spiess HW. Solid-State NMR Characterization of the Multiphase Structure of Polypropylene In-reactor Alloy. MACROMOL CHEM PHYS 2010. [DOI: 10.1002/macp.200900661] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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34
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Fu W, Jiang R, Chen T, Lin H, Sun P, Li B, Jin Q, Ding D. Evolution of interphase in styrene-butadiene block copolymers as revealed by 1H solid-state NMR: Effect of temperature and molecular architecture. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.03.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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35
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LI X, DANG Q, LIN H, WANG Y, SUN P, LI B, JIN Q, DING D. HIGH-RESOLUTION SOLID-STATE NMR STUDIES ON THE MISCIBILITY AND DYNAMICS IN UNSATURATED POLYESTER/PEO-PPO-PEO TRIBLOCK COPOLYMER THERMOSET BLEND. ACTA POLYM SIN 2010. [DOI: 10.3724/sp.j.1105.2006.00636] [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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36
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Thermal induced mobility of self-assembled platelets of polyethylene-block-poly(ethylene oxide) in liquid precursors of unsaturated polyester thermoset. Eur Polym J 2009. [DOI: 10.1016/j.eurpolymj.2009.06.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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37
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Saalwächter K, Thomann Y, Hasenhindl A, Schneider H. Direct Observation of Interphase Composition in Block Copolymers. Macromolecules 2008. [DOI: 10.1021/ma802094h] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kay Saalwächter
- Martin-Luther-Universität Halle-Wittenberg, Institut für Physik, Betty-Heimann-Str. 7, D-06120 Halle, Germany
| | - Yi Thomann
- Albert-Ludwigs-Universität Freiburg, Institut für Makromolekulare Chemie und Freiburger Materialforschungszentrum, Stefan-Meier-Str. 21, D-79104 Freiburg, Germany
| | - Alfred Hasenhindl
- Albert-Ludwigs-Universität Freiburg, Institut für Makromolekulare Chemie und Freiburger Materialforschungszentrum, Stefan-Meier-Str. 21, D-79104 Freiburg, Germany
| | - Horst Schneider
- Martin-Luther-Universität Halle-Wittenberg, Institut für Physik, Betty-Heimann-Str. 7, D-06120 Halle, Germany
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38
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39
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Li X, Fu W, Wang Y, Chen T, Liu X, Lin H, Sun P, Jin Q, Ding D. Solid-state NMR characterization of unsaturated polyester thermoset blends containing PEO–PPO–PEO block copolymers. POLYMER 2008. [DOI: 10.1016/j.polymer.2008.04.042] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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40
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Wang X, Gu Q, Sun Q, Zhou D, Sun P, Xue G. Characterization of Polymer Compatibility by 1H Dipolar Filter Solid-State NMR under Fast Magic Angle Spinning. Macromolecules 2007. [DOI: 10.1021/ma071823c] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiaoliang Wang
- Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, People's Republic of China, and Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Qiang Gu
- Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, People's Republic of China, and Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Qing Sun
- Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, People's Republic of China, and Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Dongshan Zhou
- Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, People's Republic of China, and Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Pingchuan Sun
- Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, People's Republic of China, and Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Gi Xue
- Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, People's Republic of China, and Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
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41
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Serrano E, Tercjak A, Ocando C, Larrañaga M, Parellada MD, Corona-Galván S, Mecerreyes D, Zafeiropoulos NE, Stamm M, Mondragon I. Curing Behavior and Final Properties of Nanostructured Thermosetting Systems Modified with Epoxidized Styrene-Butadiene Linear Diblock Copolymers. MACROMOL CHEM PHYS 2007. [DOI: 10.1002/macp.200700169] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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42
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Gerard P, Boupat NP, Fine T, Gervat L, Pascault JP. Toughness Properties of Lightly Crosslinked Epoxies Using Block Copolymers. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/masy.200751006] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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43
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Li B, Xu L, Wu Q, Chen T, Sun P, Jin Q, Ding D, Wang X, Xue G, Shi AC. Various Types of Hydrogen Bonds, Their Temperature Dependence and Water−Polymer Interaction in Hydrated Poly(Acrylic Acid) as Revealed by 1H Solid-State NMR Spectroscopy. Macromolecules 2007. [DOI: 10.1021/ma070485c] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Baohui Li
- Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry and College of Physics, Nankai University, Tianjin, 300071, P. R. China, Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, State Key Laboratory of Co-ordination Chemistry, Nanjing University, Nanjing 210093, P. R. China, and Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Lu Xu
- Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry and College of Physics, Nankai University, Tianjin, 300071, P. R. China, Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, State Key Laboratory of Co-ordination Chemistry, Nanjing University, Nanjing 210093, P. R. China, and Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Qiang Wu
- Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry and College of Physics, Nankai University, Tianjin, 300071, P. R. China, Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, State Key Laboratory of Co-ordination Chemistry, Nanjing University, Nanjing 210093, P. R. China, and Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Tiehong Chen
- Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry and College of Physics, Nankai University, Tianjin, 300071, P. R. China, Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, State Key Laboratory of Co-ordination Chemistry, Nanjing University, Nanjing 210093, P. R. China, and Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Pingchuan Sun
- Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry and College of Physics, Nankai University, Tianjin, 300071, P. R. China, Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, State Key Laboratory of Co-ordination Chemistry, Nanjing University, Nanjing 210093, P. R. China, and Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Qinghua Jin
- Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry and College of Physics, Nankai University, Tianjin, 300071, P. R. China, Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, State Key Laboratory of Co-ordination Chemistry, Nanjing University, Nanjing 210093, P. R. China, and Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Datong Ding
- Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry and College of Physics, Nankai University, Tianjin, 300071, P. R. China, Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, State Key Laboratory of Co-ordination Chemistry, Nanjing University, Nanjing 210093, P. R. China, and Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Xiaoliang Wang
- Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry and College of Physics, Nankai University, Tianjin, 300071, P. R. China, Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, State Key Laboratory of Co-ordination Chemistry, Nanjing University, Nanjing 210093, P. R. China, and Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Gi Xue
- Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry and College of Physics, Nankai University, Tianjin, 300071, P. R. China, Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, State Key Laboratory of Co-ordination Chemistry, Nanjing University, Nanjing 210093, P. R. China, and Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - An-Chang Shi
- Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry and College of Physics, Nankai University, Tianjin, 300071, P. R. China, Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, State Key Laboratory of Co-ordination Chemistry, Nanjing University, Nanjing 210093, P. R. China, and Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
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44
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Larrañaga M, Serrano E, Martin MD, Tercjak A, Kortaberria G, de la Caba K, Riccardi CC, Mondragon I. Mechanical properties–morphology relationships in nano-/microstructured epoxy matrices modified with PEO–PPO–PEO block copolymers. POLYM INT 2007. [DOI: 10.1002/pi.2289] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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45
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Hermel-Davidock TJ, Tang HS, Murray DJ, Hahn SF. Control of the block copolymer morphology in templated epoxy thermosets. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/polb.21336] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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46
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Kalogeras IM, Vassilikou-Dova A, Christakis I, Pietkiewicz D, Brostow W. Thermophysical Properties and Molecular Relaxations in Cured Epoxy Resin + PEO Blends: Observations on Factors Controlling Miscibility. MACROMOL CHEM PHYS 2006. [DOI: 10.1002/macp.200600052] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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47
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Guo Q, Chen F, Wang K, Chen L. Nanostructured thermoset epoxy resin templated by an amphiphilic poly(ethylene oxide)-block-poly(dimethylsiloxane) diblock copolymer. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/polb.20947] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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48
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Guo Q, Wang K, Chen L, Zheng S, Halley PJ. Phase behavior, crystallization, and nanostructures in thermoset blends of epoxy resin and amphiphilic star-shaped block copolymers. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/polb.20747] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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49
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SUGAWARA D, TAKEYAMA H, IIJIMA T, OYAMA T, TOMOI M. Toughening of Acid Anhydride-cured Epoxy Resin by Modification with Poly[poly(N-phenylmaleimide-alt-styrene)-block-polyoxyethylene] Prepared by in situ Polymerization. KOBUNSHI RONBUNSHU 2006. [DOI: 10.1295/koron.63.720] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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