1
|
Huang YZ, Woo EM, Nagarajan S. Periodic Hierarchical Structures in Poly( p-dioxanone) Modulated with Miscible Diluents: Top-Surface and Interior Analyses. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yu-Zhe Huang
- Department of Chemical Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701-01, Taiwan
| | - Eamor M. Woo
- Department of Chemical Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701-01, Taiwan
| | - Selvaraj Nagarajan
- Department of Chemical Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701-01, Taiwan
| |
Collapse
|
2
|
Nagarajan S, Li H, Woo EM, Chuang W, Tsai YW. Single Crystals Self‐Assembled to Sector‐Face Dendritic Aggregates by Synchrotron Microbeam X‐ray Analysis on Poly(ethylene succinate). MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202200114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Selvaraj Nagarajan
- Department of Chemical Engineering National Cheng Kung University Tainan 701 Taiwan
| | - Hsiao‐Hua Li
- Department of Chemical Engineering National Cheng Kung University Tainan 701 Taiwan
| | - Eamor M. Woo
- Department of Chemical Engineering National Cheng Kung University Tainan 701 Taiwan
| | - Wei‐Tsung Chuang
- National Synchrotron Radiation Research Center (NSRRC) 101 Hsin‐Ann Road Hsinchu 30076 Taiwan
| | - Yi Wei Tsai
- National Synchrotron Radiation Research Center (NSRRC) 101 Hsin‐Ann Road Hsinchu 30076 Taiwan
| |
Collapse
|
3
|
Morphology Modulation in Self-Assembly of Chiral 2-Hydroxy-2-Phenylacetic Acids in Polymeric Diluents. CRYSTALS 2022. [DOI: 10.3390/cryst12060807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This study focused on the chirality effects that control the lamellar bending sense in self-assembled crystals of chiral 2-hydroxy-2-phenylacetic acids. 2-Hydroxy-2-phenylacetic acid or mandelic acid (MA) was crystallized in the presence of poly(4-vinyl phenol) (PVPh), and its crystalline structures and morphologies were assessed using polarized optical microscopy (POM) and scanning electron microscopy (SEM). MA of two opposite chiral forms (S- and R-) was crystallized with PVPh as the morphology modulator; with adjustment of the PVPh content, the morphology of MA crystals transforms from ring-banded spherulites to highly dendritic spherulites. For MA/PVPh (50/50 wt./wt.) blend and neat MA at same Tc, the dendritic spherulites are packed with single crystals where the lamellae bend at a specific direction varying with Tc and chirality. Contrary to conventional thought, the bending senses of the MA lamellae in the dendritic spherulites are not solely governed by the MA molecular chirality (S or R), but also by Tc. Only at high Tc (>65 °C) is the lamellar bending direction in dendritic spherulites of (S)-MA or (R)-MA blended with PVPh dictated by the chirality, i.e., displaying counterclockwise and clockwise bending direction for (S)-MA/PVPh and (R)-MA/PVPh, respectively. Nevertheless, at low Tc (45 °C), the bending sense of dendritic spherulites displays an opposite direction from those at the higher Tc, which is to say that the chirality alone does not control the lamellar bending direction.
Collapse
|
4
|
Nie WC, Xiao Q, Wu JM, Song F, Wang XL, Wang YZ. Dendritic crystallization and morphology control of random poly(p-dioxanone-co-butylene-co-succinate) copolyesters. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.08.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
5
|
Nano-assembly of intertwining lamellae of opposite bending senses in poly(ethylene oxide) co-crystallizing with poly(p-vinyl phenol). JOURNAL OF POLYMER RESEARCH 2017. [DOI: 10.1007/s10965-017-1327-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
6
|
Chai L, Liu X, Sun X, Li L, Yan S. In situ observation of the melting behaviour of PEO single crystals on a PVPh substrate by AFM. Polym Chem 2016. [DOI: 10.1039/c5py02037a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
PVPh sublayer thickness dependent melting of PEO single crystals.
Collapse
Affiliation(s)
- Liguo Chai
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing (100029)
- China
| | - Xiao Liu
- College of Chemistry
- Beijing Normal University
- Beijing (100875)
- China
| | - Xiaoli Sun
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing (100029)
- China
| | - Lin Li
- College of Chemistry
- Beijing Normal University
- Beijing (100875)
- China
| | - Shouke Yan
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing (100029)
- China
| |
Collapse
|
7
|
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.
Collapse
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
| |
Collapse
|
8
|
Liu W, Liu B, Wang X. Morphology, Rheological Properties, and Crystallization Behavior of Polypropylene/Clay Nanocomposites. INT J POLYM MATER PO 2013. [DOI: 10.1080/00914037.2011.610061] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
9
|
Lugito G, Woo EM. Crystal Polymorphism and Spherulites in Poly(butylene adipate) Diluted with Strongly Versus Weakly Interacting Amorphous Polymers. MACROMOL CHEM PHYS 2012. [DOI: 10.1002/macp.201200299] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
10
|
Hernandez-Montero N, Meaurio E, Elmiloudi K, Sarasua JR. Novel miscible blends of poly(p-dioxanone) with poly(vinyl phenol). Eur Polym J 2012. [DOI: 10.1016/j.eurpolymj.2012.05.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
11
|
Wang LY, Lugito G, Woo EM, Wang YH. Phase behavior, polymorphism and spherulite morphology in Poly(1,4-butylene adipate) interacting with two structurally similar acrylic polymers. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.06.031] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
12
|
Liu Z, Zhang G, Sun H, Jiang H, Zhao C, Xu D, Li H, Sun X, Na H. Preparation, characterization and thermal properties of tetramethylbisphenol F epoxy resin and mixed systems. POLYM INT 2011. [DOI: 10.1002/pi.3205] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
13
|
Zhang Y, Li J, Huo H, Jiang S. Effects of lithium perchlorate on poly(ethylene oxide) spherulite morphology and spherulite growth kinetics. J Appl Polym Sci 2011. [DOI: 10.1002/app.34697] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
14
|
Huang IH, Chang L, Woo EM. Tannin Induced Single Crystalline Morphology in Poly(ethylene succinate). MACROMOL CHEM PHYS 2011. [DOI: 10.1002/macp.201100005] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
15
|
Miscibility and crystallization of biodegradable poly(butylene succinate-co-butylene adipate)/poly(vinyl phenol) blends. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.03.029] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
16
|
Yang Y, Zhou CH, Xu S, Zhang J, Wu SJ, Hu H, Chen BL, Tai QD, Sun ZH, Liu W, Zhao XZ. Optimization of a quasi-solid-state dye-sensitized solar cell employing a nanocrystal-polymer composite electrolyte modified with water and ethanol. NANOTECHNOLOGY 2009; 20:105204. [PMID: 19417514 DOI: 10.1088/0957-4484/20/10/105204] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A quasi-solid-state dye-sensitized solar cell employing a poly(ethylene oxide)-poly(vinylidene fluoride) (PEO-PVDF)/TiO2 gel electrolyte modified by various concentrations of water and ethanol is described. It is shown that the introduction of water and ethanol prevents the crystallization of the polymer matrix, and enhances the free I(-)/I(3)(-) concentration and the networks for ion transportation in the electrolyte, thus leading to an improvement in conductivity. A high energy conversion efficiency of about 5.8% is achieved by controlling the additive concentration in the electrolyte. Optimization of the additive-modified electrolyte performance has been obtained by studying the cross-linking behavior of water and ethanol with Fourier transform infrared (FTIR), differential scanning calorimetry (DSC) and viscosity measurements, and the electrical conduction behavior of the electrolyte with impedance spectra measurements.
Collapse
Affiliation(s)
- Ying Yang
- Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Department of Physics, Wuhan University, Wuhan 430072, People's Republic of China
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Yen KC, Woo EM. Formation of dendrite crystals in poly(ethylene oxide) interacting with bioresourceful tannin. Polym Bull (Berl) 2008. [DOI: 10.1007/s00289-008-0005-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
18
|
Qiu Z, Yang W. Nonisothermal crystallization kinetics of biodegradable poly(butylene succinate)/poly(vinyl phenol) blend. J Appl Polym Sci 2007. [DOI: 10.1002/app.25799] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
19
|
Huang JM, Kuo SW, Lee YJ, Chang FC. Synthesis and characterization of a vinyl-terminated benzoxazine monomer and its blends with poly(ethylene oxide). ACTA ACUST UNITED AC 2007. [DOI: 10.1002/polb.21090] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
20
|
Qiu Z, Yang W. Crystallization kinetics and morphology of poly(butylene succinate)/poly(vinyl phenol) blend. POLYMER 2006. [DOI: 10.1016/j.polymer.2006.07.001] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
21
|
Lin JH, Woo EM, Huang YP. Effects of lithium salt and poly(4-vinyl phenol) on crystalline and amorphous phases in poly(ethylene oxide). ACTA ACUST UNITED AC 2006. [DOI: 10.1002/polb.20985] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
22
|
Morphologic and kinetic study of an epoxy-poly(ethyleneoxide) system. The fluorescence to predict miscibility. Colloid Polym Sci 2004. [DOI: 10.1007/s00396-004-1186-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
23
|
|