1
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Han W, Liao X. Degradation of biobased poly(ethylene 2,5‐furandicarboxylate) and polyglycolide acid blends under lipase conditions. J Appl Polym Sci 2023. [DOI: 10.1002/app.53698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Affiliation(s)
- Weiqiang Han
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China
| | - Xia Liao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China
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2
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Szatkowski P, Czechowski L, Gralewski J, Szatkowska M. Mechanical Properties of Polylactide Admixed with Carbon Nanotubes or Graphene Nanopowder. MATERIALS 2021; 14:ma14205955. [PMID: 34683547 PMCID: PMC8539563 DOI: 10.3390/ma14205955] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/06/2021] [Accepted: 10/07/2021] [Indexed: 01/15/2023]
Abstract
The aim of this work was to verify the material properties of polylactic acid (PLA) with an addition of carbon nanotubes (CNTs) or graphene nanopowder (GNP). The pure polylactide and admixed polylactide samples were subjected to chemical-physical tests to determine their stiffness and strength parameters. The tensile and impact tests were performed on samples without UV (ultraviolet) treatment and after UV treatment, in a physiological saline solution. The investigations were composed of two stages. The first one was related to the examination of the properties of pure polylactide, denoted as the following: 3001D, 4032D, and 4043D. The second stage was based on an analysis of the properties of PLA 4032D with an admixture of GNP or CNTs, at 0.1 wt.% and 0.5 wt.%. By comparing the strength and the stiffness of pure samples with samples with the considered admixtures, an essential increase was not observed. However, it is stated that the presence of GNP and CNTs in the samples positively influenced the resistance of the materials to the ageing process.
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Affiliation(s)
- Piotr Szatkowski
- Faculty of Materials Science and Ceramics, University of Science and Technology, 30-059 Krakow, Poland; (P.S.); (M.S.)
| | - Leszek Czechowski
- Department of Strength of Materials, Lodz University of Technology, 90-924 Lodz, Poland
- Correspondence: ; Tel.: +48-42-631-22-15
| | - Jacek Gralewski
- Institute of Social Sciences and Management of Technologies, Lodz University of Technology, 90-924 Lodz, Poland;
| | - Martyna Szatkowska
- Faculty of Materials Science and Ceramics, University of Science and Technology, 30-059 Krakow, Poland; (P.S.); (M.S.)
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3
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Matxinandiarena E, Múgica A, Zubitur M, Ladelta V, Zapsas G, Cavallo D, Hadjichristidis N, Müller AJ. Crystallization and Morphology of Triple Crystalline Polyethylene- b-poly(ethylene oxide)- b-poly(ε-caprolactone) PE- b-PEO- b-PCL Triblock Terpolymers. Polymers (Basel) 2021; 13:polym13183133. [PMID: 34578032 PMCID: PMC8473441 DOI: 10.3390/polym13183133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 09/10/2021] [Accepted: 09/13/2021] [Indexed: 11/17/2022] Open
Abstract
The morphology and crystallization behavior of two triblock terpolymers of polymethylene, equivalent to polyethylene (PE), poly (ethylene oxide) (PEO), and poly (ε-caprolactone) (PCL) are studied: PE227.1-b-PEO4615.1-b-PCL3210.4 (T1) and PE379.5-b-PEO348.8-b-PCL297.6 (T2) (superscripts give number average molecular weights in kg/mol and subscripts composition in wt %). The three blocks are potentially crystallizable, and the triple crystalline nature of the samples is investigated. Polyhomologation (C1 polymerization), ring-opening polymerization, and catalyst-switch strategies were combined to synthesize the triblock terpolymers. In addition, the corresponding PE-b-PEO diblock copolymers and PE homopolymers were also analyzed. The crystallization sequence of the blocks was determined via three independent but complementary techniques: differential scanning calorimetry (DSC), in situ SAXS/WAXS (small angle X-ray scattering/wide angle X-ray scattering), and polarized light optical microscopy (PLOM). The two terpolymers (T1 and T2) are weakly phase segregated in the melt according to SAXS. DSC and WAXS results demonstrate that in both triblock terpolymers the crystallization process starts with the PE block, continues with the PCL block, and ends with the PEO block. Hence triple crystalline materials are obtained. The crystallization of the PCL and the PEO block is coincident (i.e., it overlaps); however, WAXS and PLOM experiments can identify both transitions. In addition, PLOM shows a spherulitic morphology for the PE homopolymer and the T1 precursor diblock copolymer, while the other systems appear as non-spherulitic or microspherulitic at the last stage of the crystallization process. The complicated crystallization of tricrystalline triblock terpolymers can only be fully grasped when DSC, WAXS, and PLOM experiments are combined. This knowledge is fundamental to tailor the properties of these complex but fascinating materials.
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Affiliation(s)
- Eider Matxinandiarena
- POLYMAT and Department of Polymers and Advanced Materials: Physics, Chemistry and Technology, University of the Basque Country UPV/EHU, Paseo Manuel Lardizábal 3, 20018 Donostia-San Sebastián, Spain; (E.M.); (A.M.)
| | - Agurtzane Múgica
- POLYMAT and Department of Polymers and Advanced Materials: Physics, Chemistry and Technology, University of the Basque Country UPV/EHU, Paseo Manuel Lardizábal 3, 20018 Donostia-San Sebastián, Spain; (E.M.); (A.M.)
| | - Manuela Zubitur
- Department of Chemical and Environmental Engineering, University of the Basque Country UPV/EHU, Plaza Europa 1, 20018 Donostia-San Sebastián, Spain;
| | - Viko Ladelta
- Polymer Synthesis Laboratory, KAUST Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia; (V.L.); (G.Z.)
| | - George Zapsas
- Polymer Synthesis Laboratory, KAUST Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia; (V.L.); (G.Z.)
| | - Dario Cavallo
- Department of Chemistry and Industrial Chemistry, University of Genova, via Dodecaneso 31, 16146 Genova, Italy;
| | - Nikos Hadjichristidis
- Polymer Synthesis Laboratory, KAUST Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia; (V.L.); (G.Z.)
- Correspondence: (N.H.); (A.J.M.)
| | - Alejandro J. Müller
- POLYMAT and Department of Polymers and Advanced Materials: Physics, Chemistry and Technology, University of the Basque Country UPV/EHU, Paseo Manuel Lardizábal 3, 20018 Donostia-San Sebastián, Spain; (E.M.); (A.M.)
- Ikerbasque, Basque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Spain
- Correspondence: (N.H.); (A.J.M.)
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4
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Sangroniz L, Wang B, Su Y, Liu G, Cavallo D, Wang D, Müller AJ. Fractionated crystallization in semicrystalline polymers. Prog Polym Sci 2021. [DOI: 10.1016/j.progpolymsci.2021.101376] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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5
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Qazi RA, Khan MS, Shah LA, Ullah R, Kausar A, Khattak R. Eco-friendly electronics, based on nanocomposites of biopolyester reinforced with carbon nanotubes: a review. POLYM-PLAST TECH MAT 2020. [DOI: 10.1080/25740881.2020.1719137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Raina Aman Qazi
- Polymer Laboratory, National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar, Pakistan
- National Centre for Physics, Quaid-i-Azam University Campus, Islamabad, Pakistan
| | - Mohammad Saleem Khan
- Polymer Laboratory, National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar, Pakistan
| | - Luqman Ali Shah
- Polymer Laboratory, National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar, Pakistan
| | - Rizwan Ullah
- Polymer Laboratory, National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar, Pakistan
| | - Ayesha Kausar
- National Centre for Physics, Quaid-i-Azam University Campus, Islamabad, Pakistan
- National Centre for Physics, Quaid-i-Azam University Campus, Islamabad, Pakistan
| | - Rozina Khattak
- Department of Chemistry, Shaheed Benazir Bhutto Women University, Peshawar, Pakistan
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6
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Electrical, thermal, and mechanical properties of silicone foam composites filled with carbon‐based nanofillers. J Appl Polym Sci 2020. [DOI: 10.1002/app.49191] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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7
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Han W, Li S, Liao X, He B, Yang Q, Li G. Confined crystallization morphology of poly( ϵ‐caprolactone) block within poly( ϵ‐caprolactone)–poly( l‐lactide) copolymers. POLYM INT 2019. [DOI: 10.1002/pi.5911] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Weiqiang Han
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials EngineeringSichuan University Chengdu Sichuan China
| | - Shaojie Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials EngineeringSichuan University Chengdu Sichuan China
| | - Xia Liao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials EngineeringSichuan University Chengdu Sichuan China
- Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced ManufacturingSouth China University of Technology Guangzhou China
| | - Bin He
- National Engineering Research Center for BiomaterialsSichuan University Chengdu Sichuan China
| | - Qi Yang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials EngineeringSichuan University Chengdu Sichuan China
| | - Guangxian Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials EngineeringSichuan University Chengdu Sichuan China
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8
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Nikovia C, Theodoridis L, Alexandris S, Bilalis P, Hadjichristidis N, Floudas G, Pitsikalis M. Macromolecular Brushes by Combination of Ring-Opening and Ring-Opening Metathesis Polymerization. Synthesis, Self-Assembly, Thermodynamics, and Dynamics. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01905] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Christiana Nikovia
- Industrial Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece
| | | | | | - Panayiotis Bilalis
- Physical Sciences and Engineering Division, Polymer Synthesis Laboratory, KAUST Catalysis Center, Thuwal 23955, Kingdom of Saudi Arabia
| | - Nikos Hadjichristidis
- Physical Sciences and Engineering Division, Polymer Synthesis Laboratory, KAUST Catalysis Center, Thuwal 23955, Kingdom of Saudi Arabia
| | - George Floudas
- Department of Physics, University of Ioannina, 45110 Ioannina, Greece
| | - Marinos Pitsikalis
- Industrial Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece
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9
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Abbaspoor S, Agbolaghi S, Abbasi F. Chemical and physical effects of processing environment on simultaneous single crystallization of biodegradable poly(ε-caprolactone) and poly(l-lactide) brushes and poly(ethylene glycol) substrate. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.04.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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10
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Palacios JK, Zhao J, Hadjichristidis N, Müller AJ. How the Complex Interplay between Different Blocks Determines the Isothermal Crystallization Kinetics of Triple-Crystalline PEO-b-PCL-b-PLLA Triblock Terpolymers. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b02148] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jordana K. Palacios
- POLYMAT
and Polymer Science and Technology Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018 Donostia-San Sebastián, Spain
| | - Junpeng Zhao
- Faculty
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, People’s Republic of China
- Physical
Sciences and Engineering Division, KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Nikos Hadjichristidis
- Physical
Sciences and Engineering Division, KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Alejandro J. Müller
- POLYMAT
and Polymer Science and Technology Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018 Donostia-San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
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11
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Palacios JK, Tercjak A, Liu G, Wang D, Zhao J, Hadjichristidis N, Müller AJ. Trilayered Morphology of an ABC Triple Crystalline Triblock Terpolymer. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01576] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | | | - Guoming Liu
- Beijing
National Laboratory for Molecular Sciences, CAS Key Laboratory of
Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Dujin Wang
- Beijing
National Laboratory for Molecular Sciences, CAS Key Laboratory of
Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Junpeng Zhao
- Faculty
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Nikos Hadjichristidis
- Physical
Sciences and Engineering Division, KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
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12
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Leng X, Ren Y, Wei Z, Bian Y, Li Y. Synthesis of Star-Comb Double Crystalline Diblock Copolymer of Poly(ε-caprolactone)-block-poly(l-lactide): Effect of Chain Topology on Crystallization Behavior. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700178] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xuefei Leng
- State Key Laboratory of Fine Chemicals; Department of Polymer Materials; School of Chemical Engineering; Dalian University of Technology; Dalian 116024 China
| | - Yingying Ren
- State Key Laboratory of Fine Chemicals; Department of Polymer Materials; School of Chemical Engineering; Dalian University of Technology; Dalian 116024 China
| | - Zhiyong Wei
- State Key Laboratory of Fine Chemicals; Department of Polymer Materials; School of Chemical Engineering; Dalian University of Technology; Dalian 116024 China
| | - Yufei Bian
- State Key Laboratory of Fine Chemicals; Department of Polymer Materials; School of Chemical Engineering; Dalian University of Technology; Dalian 116024 China
| | - Yang Li
- State Key Laboratory of Fine Chemicals; Department of Polymer Materials; School of Chemical Engineering; Dalian University of Technology; Dalian 116024 China
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13
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Han W, Liao X, Yang Q, Li G, He B, Zhu W, Hao Z. Crystallization and morphological transition of poly(l-lactide)–poly(ε-caprolactone) diblock copolymers with different block length ratios. RSC Adv 2017. [DOI: 10.1039/c7ra03496b] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The crystallization temperature has an effect on the relationship between the lamellar twisting and the morphological transition of PLLA.
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Affiliation(s)
- Weiqiang Han
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610065
| | - Xia Liao
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610065
| | - Qi Yang
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610065
| | - Guangxian Li
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610065
| | - Bin He
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610065
| | - Wenli Zhu
- School of Mechanical and Automobile Engineering
- Hubei University of Arts and Science
- Xiangyang
- China
| | - Zengheng Hao
- Chongqing Zhixiang Paving Technology Engineering Co., Ltd
- Chongqing 400060
- China
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14
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15
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Cao L, Deng S, Lin Z. Enhancement of Carbon Nanotube Particle Distribution in PPS/PEEK/Carbon Nanotube Ternary Composites with Sausage-Like Structure. Polymers (Basel) 2016; 8:polym8020050. [PMID: 30979147 PMCID: PMC6432576 DOI: 10.3390/polym8020050] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 01/31/2016] [Accepted: 02/04/2016] [Indexed: 11/16/2022] Open
Abstract
Carbon nanomaterial particles were selectively distributed in an incompatible and high-melting-temperature polymer blend interface, or in a particular phase, to obtain conductive composites. The composite products revealed poor morphology stability and mechanical performance due to processing several times. Poly(phenylene sulfide) (PPS) and poly(ether ether ketone) (PEEK) polymers with large differences of processing temperatures were selected as blend components to obtain a compatible blend. PPS/PEEK/multi-walled carbon nanotube (MWCNT) ternary nanocomposites were prepared using a controlled melt blending process. The composite samples with similar sausage-like structures of PEEK, as a dispersed phase, promote MWCNT to maximize concentration distribution in the PPS continuous phase. As a result, the theoretical percolation threshold of the composite reduced to 0.347 wt %. Moreover, the conductivity of the composite remained stable even after processing several times. CNTs revealed a particular effect when distributed selectively in this kind of system: it can enhance the dispersion of phases and also provide conductivity to the blend at small CNT contents, which can provide more useful ideas for the development of high-melting-temperature and antistatic or conductive plastic materials.
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Affiliation(s)
- Lin Cao
- College of Science and Engineering, Jinan University, Guangzhou 510632, China.
| | - Shuling Deng
- College of Science and Engineering, Jinan University, Guangzhou 510632, China.
| | - Zhidan Lin
- College of Science and Engineering, Jinan University, Guangzhou 510632, China.
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16
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Palacios JK, Mugica A, Zubitur M, Iturrospe A, Arbe A, Liu G, Wang D, Zhao J, Hadjichristidis N, Müller AJ. Sequential crystallization and morphology of triple crystalline biodegradable PEO-b-PCL-b-PLLA triblock terpolymers. RSC Adv 2016. [DOI: 10.1039/c5ra25812j] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The sequential crystallization of poly(ethylene oxide)-b-poly(ε-caprolactone)-b-poly(l-lactide) (PEO-b-PCL-b-PLLA) triblock terpolymers, in which the three blocks are able to crystallize separately and sequentially from the melt, is presented.
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17
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Laredo E, Newman D, Pezzoli R, Müller AJ, Bello A. A complete TSDC description of molecular mobilities in polylactide/starch blends from local to normal modes: Effect of composition, moisture, and crystallinity. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/polb.23963] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Estrella Laredo
- Departamento De Física; Universidad Simón Bolívar; Apartado 89000 Caracas 1080-a Venezuela
| | - Dinorah Newman
- Departamento De Física; Universidad Simón Bolívar; Apartado 89000 Caracas 1080-a Venezuela
| | - Romina Pezzoli
- Departamento De Física; Universidad Simón Bolívar; Apartado 89000 Caracas 1080-a Venezuela
| | - Alejandro J. Müller
- Grupo De Polímeros USB, Departamento De Ciencia De Los Materiales; Universidad Simón Bolívar; Apartado 89000 Caracas 1080-a Venezuela
| | - Alfredo Bello
- Departamento De Física; Universidad Simón Bolívar; Apartado 89000 Caracas 1080-a Venezuela
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18
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Zhu XD, Zang CG, Jiao QJ. High electrical conductivity of nylon 6 composites obtained with hybrid multiwalled carbon nanotube/carbon fiber fillers. J Appl Polym Sci 2014. [DOI: 10.1002/app.40923] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiang-Dong Zhu
- State Key Laboratory of Explosive Science and Technology; Beijing Institute of Technology; Beijing 100081 People's Republic of China
| | - Chong-Guang Zang
- State Key Laboratory of Explosive Science and Technology; Beijing Institute of Technology; Beijing 100081 People's Republic of China
| | - Qing-Jie Jiao
- State Key Laboratory of Explosive Science and Technology; Beijing Institute of Technology; Beijing 100081 People's Republic of China
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19
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Newman D, Laredo E, Bello A, Dubois P. Combined Effect of Humidity and Composition on the Molecular Mobilities of Poly(ε-caprolactone-ran-ε-caprolactam) Copolymers. Macromolecules 2014. [DOI: 10.1021/ma500260e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dinorah Newman
- Physics
Department, Universidad Simón Bolívar, Apartado 89000, Caracas 1080, Venezuela
| | - Estrella Laredo
- Physics
Department, Universidad Simón Bolívar, Apartado 89000, Caracas 1080, Venezuela
| | - Alfredo Bello
- Physics
Department, Universidad Simón Bolívar, Apartado 89000, Caracas 1080, Venezuela
| | - Philippe Dubois
- Laboratory of Polymers and Composite Materials, Center of Innovation and Research in Materials & Polymers (CIRMAP), University of Mons - UMONS, Place du Parc 20, Mons B-7000, Belgium
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20
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21
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Peponi L, Navarro-Baena I, Báez JE, Kenny JM, Marcos-Fernández A. Effect of the molecular weight on the crystallinity of PCL-b-PLLA di-block copolymers. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.07.066] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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22
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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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23
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Yan D, Huang H, He T, Zhang F. Coupling of microphase separation and dewetting in weakly segregated diblock co-polymer ultrathin films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:11973-11980. [PMID: 21870883 DOI: 10.1021/la202379b] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We have studied the coupling behavior of microphase separation and autophobic dewetting in weakly segregated poly(ε-caprolactone)-block-poly(L-lactide) (PCL-b-PLLA) diblock co-polymer ultrathin films on carbon-coated mica substrates. At temperatures higher than the melting point of the PLLA block, the co-polymer forms a lamellar structure in bulk with a long period of L ∼ 20 nm, as determined using small-angle X-ray scattering. The relaxation procedure of ultrathin films with an initial film thickness of h = 10 nm during annealing has been followed by atomic force microscopy (AFM). In the experimental temperature range (100-140 °C), the co-polymer dewets to an ultrathin film of itself at about 5 nm because of the strong attraction of both blocks with the substrate. Moreover, the dewetting velocity increases with decreasing annealing temperatures. This novel dewetting kinetics can be explained by a competition effect of the composition fluctuation driven by the microphase separation with the dominated dewetting process during the early stage of the annealing process. While dewetting dominates the relaxation procedure and leads to the rupture of the ultrathin films, the composition fluctuation induced by the microphase separation attempts to stabilize them because of the matching of h to the long period (h ∼ 1/2L). The temperature dependence of these two processes leads to this novel relaxation kinetics of co-polymer thin films.
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Affiliation(s)
- Derong Yan
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Graduate School of Chinese Academy of Sciences Changchun 130022, People's Republic of China
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24
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Bello A, Laredo E, Marval JR, Grimau M, Arnal ML, Müller AJ, Ruelle B, Dubois P. Universality and Percolation in Biodegradable Poly(ε-caprolactone)/Multiwalled Carbon Nanotube Nanocomposites from Broad Band Alternating and Direct Current Conductivity at Various Temperatures. Macromolecules 2011. [DOI: 10.1021/ma102598h] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alfredo Bello
- Departamento de Física and ‡Departamento de Ciencia de los Materiales, Universidad Simón Bolívar, Apartado 89000, Caracas 1080, Venezuela
| | - Estrella Laredo
- Departamento de Física and ‡Departamento de Ciencia de los Materiales, Universidad Simón Bolívar, Apartado 89000, Caracas 1080, Venezuela
| | - Jesús R. Marval
- Departamento de Física and ‡Departamento de Ciencia de los Materiales, Universidad Simón Bolívar, Apartado 89000, Caracas 1080, Venezuela
| | - Mario Grimau
- Departamento de Física and ‡Departamento de Ciencia de los Materiales, Universidad Simón Bolívar, Apartado 89000, Caracas 1080, Venezuela
| | - María L. Arnal
- Departamento de Física and ‡Departamento de Ciencia de los Materiales, Universidad Simón Bolívar, Apartado 89000, Caracas 1080, Venezuela
| | - Alejandro J. Müller
- Departamento de Física and ‡Departamento de Ciencia de los Materiales, Universidad Simón Bolívar, Apartado 89000, Caracas 1080, Venezuela
| | - Benoit Ruelle
- Center of Research and Innovation in Materials and Polymers CIRMAP, Service des Matériaux Polymères et Composites SMPC, Université de Mons-UMONS, Place du Parc 20, B-7000 Mons, Belgium
| | - Philippe Dubois
- Center of Research and Innovation in Materials and Polymers CIRMAP, Service des Matériaux Polymères et Composites SMPC, Université de Mons-UMONS, Place du Parc 20, B-7000 Mons, Belgium
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Nucleation and crystallization of H-shaped (PS)2PEG(PS)2 block copolymers. CHINESE JOURNAL OF POLYMER SCIENCE 2010. [DOI: 10.1007/s10118-010-9025-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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26
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Laredo E, Grimau M, Bello A, Wu DF, Zhang YS, Lin DP. AC Conductivity of Selectively Located Carbon Nanotubes in Poly(ε-caprolactone)/Polylactide Blend Nanocomposites. Biomacromolecules 2010; 11:1339-47. [DOI: 10.1021/bm100135n] [Citation(s) in RCA: 102] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- E. Laredo
- Departamento de Física y Departamento de Ciencia de los Materiales, Universidad Simón Bolívar, Apartado 89000, Caracas 1080, Venezuela, and School of Chemistry and Chemical Engineering, Yangzhou University, Jiangsu 225002, People’s Republic of China
| | - M. Grimau
- Departamento de Física y Departamento de Ciencia de los Materiales, Universidad Simón Bolívar, Apartado 89000, Caracas 1080, Venezuela, and School of Chemistry and Chemical Engineering, Yangzhou University, Jiangsu 225002, People’s Republic of China
| | - A. Bello
- Departamento de Física y Departamento de Ciencia de los Materiales, Universidad Simón Bolívar, Apartado 89000, Caracas 1080, Venezuela, and School of Chemistry and Chemical Engineering, Yangzhou University, Jiangsu 225002, People’s Republic of China
| | - D. F. Wu
- Departamento de Física y Departamento de Ciencia de los Materiales, Universidad Simón Bolívar, Apartado 89000, Caracas 1080, Venezuela, and School of Chemistry and Chemical Engineering, Yangzhou University, Jiangsu 225002, People’s Republic of China
| | - Y. S. Zhang
- Departamento de Física y Departamento de Ciencia de los Materiales, Universidad Simón Bolívar, Apartado 89000, Caracas 1080, Venezuela, and School of Chemistry and Chemical Engineering, Yangzhou University, Jiangsu 225002, People’s Republic of China
| | - D. P. Lin
- Departamento de Física y Departamento de Ciencia de los Materiales, Universidad Simón Bolívar, Apartado 89000, Caracas 1080, Venezuela, and School of Chemistry and Chemical Engineering, Yangzhou University, Jiangsu 225002, People’s Republic of China
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27
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Newman D, Laredo E, Bello A, Grillo A, Feijoo JL, Müller AJ. Molecular Mobilities in Biodegradable Poly(dl-lactide)/Poly(ε-caprolactone) Blends. Macromolecules 2009. [DOI: 10.1021/ma9007303] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dinorah Newman
- Departamento de Física
- Grupo de Polímeros USB, Departamento de Ciencia de los Materiales
- Universidad Simón Bolívar, Apartado 89000, Caracas 1080-A, Venezuela
| | - Estrella Laredo
- Departamento de Física
- Grupo de Polímeros USB, Departamento de Ciencia de los Materiales
- Universidad Simón Bolívar, Apartado 89000, Caracas 1080-A, Venezuela
| | - Alfredo Bello
- Departamento de Física
- Grupo de Polímeros USB, Departamento de Ciencia de los Materiales
- Universidad Simón Bolívar, Apartado 89000, Caracas 1080-A, Venezuela
| | - Angélica Grillo
- Departamento de Física
- Grupo de Polímeros USB, Departamento de Ciencia de los Materiales
- Universidad Simón Bolívar, Apartado 89000, Caracas 1080-A, Venezuela
| | - José Luis Feijoo
- Departamento de Física
- Grupo de Polímeros USB, Departamento de Ciencia de los Materiales
- Universidad Simón Bolívar, Apartado 89000, Caracas 1080-A, Venezuela
| | - Alejandro J. Müller
- Departamento de Física
- Grupo de Polímeros USB, Departamento de Ciencia de los Materiales
- Universidad Simón Bolívar, Apartado 89000, Caracas 1080-A, Venezuela
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