1
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Peng Z, Zhu M, Yang J, Li L. How does Poly(ethylene glycol) with varied chain length affect the thermo-responsive behavior of methyl cellulose in aqueous solutions? POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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2
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Cao Y, Zhu P, Zhou Y, Wang D, Dong X. Influence of soft block and film thickness on confined morphology of poly(ether‐
mb
‐amide) multiblock copolymers. POLYMER CRYSTALLIZATION 2020. [DOI: 10.1002/pcr2.10100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yiyu Cao
- CAS Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular SciencesInstitute of Chemistry, Chinese Academy of Sciences Beijing China
- University of Chinese Academy of Sciences Beijing China
- Key Laboratory of Bio‐based Polymeric Materials Technology and Application of Zhejiang Province, Polymers and Composites DivisionNingbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences Ningbo China
| | - Ping Zhu
- CAS Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular SciencesInstitute of Chemistry, Chinese Academy of Sciences Beijing China
| | - Yong Zhou
- CAS Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular SciencesInstitute of Chemistry, Chinese Academy of Sciences Beijing China
| | - Dujin Wang
- CAS Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular SciencesInstitute of Chemistry, Chinese Academy of Sciences Beijing China
- University of Chinese Academy of Sciences Beijing China
| | - Xia Dong
- CAS Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular SciencesInstitute of Chemistry, Chinese Academy of Sciences Beijing China
- University of Chinese Academy of Sciences Beijing China
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3
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Zhang L, Zhao G, Wang G. Investigation on the growth of snowflake-shaped Poly(l-Lactic acid) crystal by in-situ high-pressure microscope. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.05.061] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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4
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Zhang L, Zhao G, Wang G. Investigation of the influence of pressurized CO 2 on the crystal growth of poly(l-lactic acid) by using an in situ high-pressure optical system. SOFT MATTER 2019; 15:5714-5727. [PMID: 31265051 DOI: 10.1039/c9sm00737g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Since CO2 is a kind of nontoxic, non-flammable and biocompatible fluid, introducing CO2 in the PLLA formation process has been regarded as a green way to the manufacture of biological products or medical supplies. However, it is still a challenge to understand the influence of CO2 on the crystal growth behavior of PLLA. Here, we developed an in situ high-pressure observation system, composed of optics, polarization optics and a small angle laser scattering system, to record the growth process of PLLA crystals in a pressurized CO2 environment. It is found that, at a low temperature (near Tg), low pressure CO2 (0.5 MPa in this work) can still induce the formation of numerous micron-sized spherulites of PLLA. Therefore, the introduction of CO2 can significantly enhance the crystallization ability of PLLA and decrease the crystallization temperature, which is helpful in improving the mechanical properties of PLLA products. We also found that a snowflake-shaped crystal was assembled by rhombic lamellae under pressurized CO2. There is a melt accumulation zone surrounding the growth front of the snowflake-shaped crystal, indicating that the growth front nucleation is limited by the pressurized CO2. This melt accumulation zone is quite different from the melt depletion zone existing ahead of the reported dendritic crystal front. Interestingly, in a high-pressure CO2 environment, a kind of bamboo-like branch is formed in a rhythmic growth mode. The repeating unit of the bamboo-like branch is constructed by an asymmetric terrace crystal originated from screw dislocation in the melt accumulation zone. These results demonstrated that CO2 has a remarkable tunability on the polymer crystal morphology.
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Affiliation(s)
- Lei Zhang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, Shandong 250061, P. R. China.
| | - Guoqun Zhao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, Shandong 250061, P. R. China.
| | - Guilong Wang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, Shandong 250061, P. R. China.
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5
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Lu X, Zheng K, Yang J, Zhao J. Probing the interplay between chain diffusion and polymer crystal growth under nanoscale confinement: a study by single molecule fluorescence microscopy. Sci China Chem 2018. [DOI: 10.1007/s11426-018-9290-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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6
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Li X, Lu X. Evolution of Irreversibly Adsorbed Layer Promotes Dewetting of Polystyrene Film on Sapphire. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01141] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Xu Li
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, Jiangsu Province, P. R. China
| | - Xiaolin Lu
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, Jiangsu Province, P. R. China
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7
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Agbolaghi S, Abbaspoor S, Abbasi F. A comprehensive review on polymer single crystals—From fundamental concepts to applications. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2017.11.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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8
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Xu J, Liu Z, Lan Y, Zuo B, Wang X, Yang J, Zhang W, Hu W. Mobility Gradient of Poly(ethylene terephthalate) Chains near a Substrate Scaled by the Thickness of the Adsorbed Layer. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00922] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Jianquan Xu
- Department
of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing
Technology of the Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Zhenshan Liu
- Department
of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing
Technology of the Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yang Lan
- Department
of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing
Technology of the Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Biao Zuo
- Department
of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing
Technology of the Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xinping Wang
- Department
of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing
Technology of the Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Juping Yang
- Department
of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing
Technology of the Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Wei Zhang
- Department
of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing
Technology of the Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Wenbing Hu
- Department
of Polymer Science and Engineering, State Key Lab of Coordination
Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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9
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Jeong H, Napolitano S, Arnold CB, Priestley RD. Irreversible Adsorption Controls Crystallization in Vapor-Deposited Polymer Thin Films. J Phys Chem Lett 2017; 8:229-234. [PMID: 27977204 DOI: 10.1021/acs.jpclett.6b02573] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Matrix-assisted pulsed laser evaporation (MAPLE) provides a gentle means for the quasi-vapor deposition of macromolecules. It offers a unique opportunity for the bottom-up control of polymer crystallization as film growth and crystallization occur simultaneously. Surprisingly, with increasing deposition time, it has been shown that crystallization becomes prohibited despite the availability of polymer via continuous deposition. In this Letter, we investigate the molecular origins of suppressed crystallization in poly(ethylene oxide) films deposited by MAPLE atop silicon substrates. We find that suppressed crystallization results from the formation of an irreversibly adsorbed polymer nanolayer at the substrate that forms during deposition. Substrate temperature is shown to influence the stability of the irreversibly adsorbed nanolayer and, hence, polymer thin film crystallization. Our investigation offers new insight into how temperature and interfacial interactions can serve as a new toolbox to tune polymer film morphology in bottom-up deposition.
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Affiliation(s)
- Hyuncheol Jeong
- Department of Chemical and Biological Engineering, Princeton University , Princeton, New Jersey 08544, United States
| | - Simone Napolitano
- Laboratory of Polymer and Soft Matter Dynamics, Faculté des Sciences, Université Libre de Bruxelles (ULB) , Bruxelles 1050, Belgium
| | - Craig B Arnold
- Department of Mechanical and Aerospace Engineering, Princeton University , Princeton, New Jersey 08544, United States
- Princeton Institute for the Science and Technology of Materials, Princeton University , Princeton, New Jersey 08544, United States
| | - Rodney D Priestley
- Department of Chemical and Biological Engineering, Princeton University , Princeton, New Jersey 08544, United States
- Princeton Institute for the Science and Technology of Materials, Princeton University , Princeton, New Jersey 08544, United States
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10
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Jeong H, Shepard KB, Purdum GE, Guo Y, Loo YL, Arnold CB, Priestley RD. Additive Growth and Crystallization of Polymer Films. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02675] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hyuncheol Jeong
- Department
of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544 United States
| | - Kimberly B. Shepard
- Department
of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544 United States
| | - Geoffrey E. Purdum
- Department
of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544 United States
| | - Yunlong Guo
- Department
of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544 United States
| | - Yueh-Lin Loo
- Department
of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544 United States
- Princeton
Institute for the Science and Technology of Materials, Princeton University, Princeton, New Jersey 08544 United States
| | - Craig B. Arnold
- Princeton
Institute for the Science and Technology of Materials, Princeton University, Princeton, New Jersey 08544 United States
- Mechanical
and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544 United States
| | - Rodney D. Priestley
- Department
of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544 United States
- Princeton
Institute for the Science and Technology of Materials, Princeton University, Princeton, New Jersey 08544 United States
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11
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Prud’homme RE. Crystallization and morphology of ultrathin films of homopolymers and polymer blends. Prog Polym Sci 2016. [DOI: 10.1016/j.progpolymsci.2015.11.001] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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Zhao W, Su Y, Gao X, Xu J, Wang D. Interfacial effect on confined crystallization of poly(ethylene oxide)/silica composites. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/polb.23915] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Weiwei Zhao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
| | - Yunlan Su
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
| | - Xia Gao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
| | - Jianjun Xu
- DSM Resolve; P.O. Box 18 6160 MD Gleen The Netherlands
| | - Dujin Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
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13
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Jiang N, Endoh MK, Koga T. Structures and Dynamics of Adsorbed Polymer Nanolayers on Planar Solids. ACTA ACUST UNITED AC 2015. [DOI: 10.1007/978-3-319-21948-6_6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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14
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Zhong LW, Ren XK, Yang S, Chen EQ, Sun CX, Stroeks A, Yang TY. Lamellar orientation of polyamide 6 thin film crystallization on solid substrates. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.06.031] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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15
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Qi H, Wang W, Li CY. Janus Polymer Single Crystal Nanosheet via Evaporative Crystallization. ACS Macro Lett 2014; 3:675-678. [PMID: 35590767 DOI: 10.1021/mz5002806] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
We show that liquid/liquid interface can guide polymer chain folding during crystallization. Evaporation-induced crystallization of telechelic dicarboxyl end-functionalized poly(ε-caprolactone) (COOH-PCL-COOH) at a water/pentyl acetate interface produced millimeter-scale, uniform polymer single crystal (PSC) films. Due to the asymmetric nature at the interface, the PSC nanosheets exhibited a Janus structure: the two surfaces of the crystal showed distinct water contact angle, which are quantitatively confirmed by in situ nanocondensation using environmental scanning electron microscopy (ESEM).
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Affiliation(s)
- Hao Qi
- Department of Materials Science
and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Wenda Wang
- Department of Materials Science
and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Christopher Y. Li
- Department of Materials Science
and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
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16
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Molecular weight dependence of crystal pattern transitions of poly(ethylene oxide). CHINESE JOURNAL OF POLYMER SCIENCE 2013. [DOI: 10.1007/s10118-013-1273-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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17
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EVOLUTION OF CRYSTAL PATTERNS OF SINGLE-LAYER LAMELLAE OF STAR-SHAPED PEO SAMPLES. ACTA POLYM SIN 2013. [DOI: 10.3724/sp.j.1105.2013.12330] [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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18
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Tu S, Wang BL, Chen YW, Li ZM, Luo XL. Polymeric Nanocubes Spontaneously Formed from Poly(ε-caprolactone). ACS Macro Lett 2012; 1:933-936. [PMID: 35607046 DOI: 10.1021/mz300194p] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A facile and economical approach was successfully developed to prepare polymeric nanocubes from poly(ε-caprolactone) (PCL). Nanocubes which are rarely achieved with polymer were obtained simply by a proper thermal treatment on PCL thin film on a glass slide or silicon wafer. The results of scanning electron microscopy (SEM) and atomic force microscopy (AFM) observation showed that the nanocubes were as small as ∼70 nm with high yield (up to ∼130 000 nanocubes in 1 cm2 area). The combination of high-resolution transmission electron microscopy (HRTEM) and fast Fourier transform (FFT) demonstrated that these particles were single nanocrystals. We suggest that the formation of these nanocubes is based on a dewetting and crystallization mechanism. In addition, the size and yield of nanocubes could be controlled by the solution concentration and architecture of polymer as well as substrate. This work might not only facilitate gaining further basic knowledge about nucleation and crystalline growth mechanism of PCL but also provide a new way to fabricate nonspherical polymeric nanoparticles.
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Affiliation(s)
- Song Tu
- College of Polymer Science and
Engineering, Sichuan University, Chengdu
610065, P. R. China
| | - Bei-lei Wang
- College of Polymer Science and
Engineering, Sichuan University, Chengdu
610065, P. R. China
| | - Yuan-wei Chen
- College of Polymer Science and
Engineering, Sichuan University, Chengdu
610065, P. R. China
| | - Zhong-ming Li
- College of Polymer Science and
Engineering, Sichuan University, Chengdu
610065, P. R. China
- State
Key Laboratory of Polymer
Materials and Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Xiang-lin Luo
- College of Polymer Science and
Engineering, Sichuan University, Chengdu
610065, P. R. China
- State
Key Laboratory of Polymer
Materials and Engineering, Sichuan University, Chengdu 610065, P. R. China
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19
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Yan D, Huang H, He T. Crystallization and Morphology of Autophobic Dewetted Poly(ε-caprolactone)-b-poly(L-lactide) Diblock Copolymer Ultrathin Films. CHINESE J CHEM 2012. [DOI: 10.1002/cjoc.201200501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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20
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Ren Y, Huang Z, Hu W. Growth Rates of Edge-on Lamellar Crystals Confined in Polymer Thin Films. J MACROMOL SCI B 2012. [DOI: 10.1080/00222348.2012.674821] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Yijin Ren
- a Department of Materials Engineering , Hubei University of Automotive Technology , Shiyan , China
| | - Zhen Huang
- b Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing , China
| | - Wenbing Hu
- b Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing , China
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21
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Ren Y, Gao H, Hu W. Crystallization Kinetics of Lamellar Crystals Confined in Polymer Thin Films. J MACROMOL SCI B 2012. [DOI: 10.1080/00222348.2012.656005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Yijin Ren
- a Department of Materials Engineering , Hubei University of Automotive Technology , Shiyan , China
| | - Huanhuan Gao
- b Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing , China
| | - Wenbing Hu
- b Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing , China
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22
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Kajioka H, Taguchi K, Toda A. Cellular Crystallization in Thin Melt Film of it-Poly(butene-1): An Implication to Spherulitic Growth from Bulk Melt. Macromolecules 2011. [DOI: 10.1021/ma201985h] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hiroshi Kajioka
- Graduate School of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima 739-8521, Japan
| | - Ken Taguchi
- Graduate School of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima 739-8521, Japan
| | - Akihiko Toda
- Graduate School of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima 739-8521, Japan
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23
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Liu YX, Zhong LW, Su SZ, Chen EQ. Phase Selection Pathways in Ultrathin Film Crystallization of a Low Molecular Weight Poly(ethylene oxide) Fraction on Mica Surfaces. Macromolecules 2011. [DOI: 10.1021/ma201885g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yi-Xin Liu
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Lu-Wei Zhong
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Shi-Zhao Su
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Er-Qiang Chen
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
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24
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Gädt T, Schacher FH, McGrath N, Winnik MA, Manners I. Probing the Scope of Crystallization-Driven Living Self-Assembly: Studies of Diblock Copolymer Micelles with a Polyisoprene Corona and a Crystalline Poly(ferrocenyldiethylsilane) Core-Forming Metalloblock. Macromolecules 2011. [DOI: 10.1021/ma1029289] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Torben Gädt
- School of Chemistry, University of Bristol, Bristol BS8 1TS, U.K
| | | | - Nina McGrath
- School of Chemistry, University of Bristol, Bristol BS8 1TS, U.K
| | - Mitchell A. Winnik
- Department of Chemistry, University of Toronto, Toronto, ON, Canada M5S 3H6
| | - Ian Manners
- School of Chemistry, University of Bristol, Bristol BS8 1TS, U.K
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25
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Formation mechanism, chain folding, and growth behavior of the intriguing fiber-like crystal of poly (ethylene oxide-b-ε-caprolactone) block copolymer in ultrathin films. POLYMER 2011. [DOI: 10.1016/j.polymer.2011.02.044] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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26
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Zhang G, Cao Y, Jin L, Zheng P, Van Horn RM, Lotz B, Cheng SZ, Wang W. Crystal growth pattern changes in low molecular weight poly(ethylene oxide) ultrathin films. POLYMER 2011. [DOI: 10.1016/j.polymer.2011.01.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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27
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28
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Chen R, Li L, Zhao J. Single chain diffusion of poly(ethylene oxide) in its monolayers before and after crystallization. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:5951-5956. [PMID: 20039653 DOI: 10.1021/la903897v] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Lateral diffusion of single chain related to the crystallization process of poly(ethylene oxide) (PEO) in its monolayers on silica surfaces is studied by single molecule fluorescence microscopy and single molecule tracking techniques. Diffusion of PEO chains is observed in the supercooled state before crystallization as well as in the noncrystalline regions after crystallization. In the postcrystallization monolayers, the diffusion coefficient of PEO chains is an order of magnitude lower than that in the supercooled state before crystallization. The origin is attributed to the change of polymer surface concentration due to the consumption of polymer molecules in the crystal formation. This is supported by the results showing a monotonous decrease of diffusion coefficient with the thickness decrease of the monolayer in its supercooled state. The PEO chains take a more flattened conformation under lower surface concentration and stick stronger to the surface. As a consequence, the diffusion rate is reduced. The results clearly demonstrate a strong mutual effect between the crystallization process and the mass transportation for the polymer crystallization under surface confinement.
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Affiliation(s)
- Rui Chen
- Beijing Laboratory of Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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29
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Zhang G, Jin L, Zheng P, Shi AC, Wang W. Labyrinthine pattern of polymer crystals from supercooled ultrathin films. POLYMER 2010. [DOI: 10.1016/j.polymer.2009.11.061] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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30
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Macromolecular effect on crystal pattern formation in ultra-thin films: Molecular segregation in a binary blend of PEO fractions. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.10.041] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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31
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32
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Xue L, Han Y. Autophobic dewetting of a poly(methyl methacrylate) thin film on a silicon wafer treated in good solvent vapor. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:5135-5140. [PMID: 19278204 DOI: 10.1021/la8041814] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The wettability of thin poly(methyl methacrylate) (PMMA) films on a silicon wafer with a native oxide layer exposed to solvent vapors is dependent on the solvent properties. In the nonsolvent vapor, the film spread on the substrate with some protrusions generated on the film surface. In the good solvent vapor, dewetting happened. A new interface formed between the anchored PMMA chains and the swollen upper part of the film. Entropy effects caused the upper movable chains to dewet on the anchored chains. The rim instability depended on the surface tension of solvent (i.e., the finger was generated in acetone vapor (gamma(acetone) = 24 mN/m), not in dioxane vapor (gamma(dioxane) = 33 mN/m)). The spacing (lambda) that grew as an exponential function of film thickness h scaled as approximately h(1.31), whereas the mean size (D) of the resulting droplets grew linearly with h.
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Affiliation(s)
- Longjian Xue
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, PR China
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Liu YX, Li JF, Zhu DS, Chen EQ, Zhang HD. Direct Observation and Modeling of Transient Nucleation in Isothermal Thickening of Polymer Lamellar Crystal Monolayers. Macromolecules 2009. [DOI: 10.1021/ma802806q] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yi-Xin Liu
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and Key Laboratory of Molecular Engineering of Polymer of Ministry of Education, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Jian-Feng Li
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and Key Laboratory of Molecular Engineering of Polymer of Ministry of Education, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Dun-Shen Zhu
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and Key Laboratory of Molecular Engineering of Polymer of Ministry of Education, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Er-Qiang Chen
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and Key Laboratory of Molecular Engineering of Polymer of Ministry of Education, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Hong-Dong Zhang
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and Key Laboratory of Molecular Engineering of Polymer of Ministry of Education, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
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Bi W, Teguh JS, Yeow EKL. Visualizing polymer crystallization in ultrathin layers using a single-macromolecule tracking method. PHYSICAL REVIEW LETTERS 2009; 102:048302. [PMID: 19257482 DOI: 10.1103/physrevlett.102.048302] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2008] [Indexed: 05/27/2023]
Abstract
Single-(macro) molecule tracking is used for the first time here to study the crystallization process in ultrathin layers of single poly(ethylene oxide) (PEO) chains. Diffusion trajectories of macromolecules diffusing toward the crystal followed by deposition onto the crystal-growth front display different types of motion, such as Brownian and directed motions, prior to crystallization. We show that PEO chains in the amorphous layer and in the less concentrated or depleted zone exhibit Brownian motion of different diffusion rates as a result of heterogeneities in the environment.
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Affiliation(s)
- Wuguo Bi
- Division of Chemistry and Biological Chemistry, Nanyang Technological University, Singapore 637371
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Zhang G, Jin L, Ma Z, Zhai X, Yang M, Zheng P, Wang W, Wegner G. Dendritic-to-faceted crystal pattern transition of ultrathin poly(ethylene oxide) films. J Chem Phys 2008; 129:224708. [DOI: 10.1063/1.3037229] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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36
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Zhu J, Wang M. Phase Ordering and Crystallization Kinetics in Ultrathin Poly(ethylene oxide)/Poly(methyl methacrylate) Blend Films. J MACROMOL SCI B 2008. [DOI: 10.1080/00222340802219420] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Jun Zhu
- a Institute of Plasma Physics, Chinese Academy of Sciences , Hefei, China
| | - Mingtai Wang
- a Institute of Plasma Physics, Chinese Academy of Sciences , Hefei, China
- b Department of Materials Science and Engineering , Anhui Institute of Architecture & Industry , Hefei, China
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Ma Z, Zhang G, Zhai X, Jin L, Tang X, Yang M, Zheng P, Wang W. Fractal crystal growth of poly(ethylene oxide) crystals from its amorphous monolayers. POLYMER 2008. [DOI: 10.1016/j.polymer.2008.01.067] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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