1
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Hua L, Wang X. Polymorphic Crystallization Behavior of a Poly(butylene adipate) Midblock within a Poly(L-lactide-butylene adipate-L-lactide) Triblock Copolymer. Polymers (Basel) 2022; 14:polym14224902. [PMID: 36433028 PMCID: PMC9696281 DOI: 10.3390/polym14224902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/07/2022] [Accepted: 11/10/2022] [Indexed: 11/16/2022] Open
Abstract
New biodegradable aliphatic PLLA-PBA-PLLA copolymers with soft poly(butylene adipate) (PBA) and hard poly(l-lactide) (PLLA) building blocks were synthesized via ring-opening polymerization (ROP). Proton nuclear magnetic resonance (1HNMR) was utilized to confirm the volume fraction of PBA (fPBA) within PLLA-PBA-PLLA. It was found that a PBA midblock (PBA-mid) within PLLA-PBA-PLLA-s (PLLA-PBA-PLLA triblock copolymer with a short PLLA block length) might display lamellar domain structure. However, PBA-mid within PLLA-PBA-PLLA-l (PLLA-PBA-PLLA triblock copolymer with a long PLLA block length) might locate itself as a nanoscale cylindrical domain surrounded by a PLLA continuous phase. Polymorphic crystals of PBA-mid within the PLLA-PBA-PLLA copolymers were formed after melt crystallization at the given temperatures, which were studied by differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXD) analysis. According to the WAXD and DSC analyses, it was interesting to find that the α-type crystal of PBA-mid was favorable to develop in the lower temperature region regardless of the state (crystallization or amorphous) of the PLLA component. Additionally, when the PLLA component was held in its amorphous state, it was easier for PBA-mid within the PLLA-PBA-PLLA copolymers to transform from the metastable β-form crystal to the stable α-form crystal. Furthermore, polarized optical microscopy (POM) photos provided direct evidence of the polymorphic crystals of PBA-mid within PLLA-PBA-PLLAs.
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Affiliation(s)
- Lei Hua
- Institute of Polymer Science and Engineering, TongJi Zhejiang College, Jiaxing 314051, China
- Jiaxing Key Laboratory of High-Performance and Functional Materials in Civil and Environmental Engineering, Tongji Zhejiang College, Jiaxing 314051, China
- Correspondence: ; Tel.: +86-573-8287-8742
| | - Xiaodong Wang
- Institute of Polymer Science and Engineering, TongJi Zhejiang College, Jiaxing 314051, China
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2
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Lai H, Huang G, Tian X, Liu Y, Ji S. Engineering the domain roughness of block copolymer in directed self-assembly. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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3
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Rosenbloom SI, Hsu JH, Fors BP. Controlling the shape of the molecular weight distribution for tailored tensile and rheological properties in thermoplastics and thermoplastic elastomers. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20210894] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Jesse H. Hsu
- Department of Chemistry and Chemical Biology Cornell University Ithaca New York USA
| | - Brett P. Fors
- Department of Chemistry and Chemical Biology Cornell University Ithaca New York USA
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4
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Xu H, Mahanthappa MK. Ionic Conductivities of Broad Dispersity Lithium Salt-Doped Polystyrene/Poly(ethylene oxide) Triblock Polymers. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hongyun Xu
- Department of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Avenue Southeast, Minneapolis, Minnesota 55455, United States
| | - Mahesh K. Mahanthappa
- Department of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Avenue Southeast, Minneapolis, Minnesota 55455, United States
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5
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Zhao H, Li H, Tian C, Zhang L, Cheng Z. Facile Synthesis of Unimodal Polymethacrylates with Narrow Dispersity via NIR LED Light-Controlled Bromine-Iodine Transformation Reversible-Deactivation Radical Polymerization. Macromol Rapid Commun 2021; 42:e2100211. [PMID: 34028909 DOI: 10.1002/marc.202100211] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 04/26/2021] [Indexed: 11/08/2022]
Abstract
A facile and clean strategy for synthesizing unimodal polymethacrylates with narrow dispersity (Đ < 1.10) is successfully developed by a near-infrared (NIR) light-emitting diode (LED) light (λmax = 740 nm)-controlled in situ bromine-iodine transformation reversible-deactivation radical polymerization system without the use of NIR dyes and expensive catalysts. In this system, alkyl iodide ethyl α-iodophenylacetate (EIPA) initiator is generated in situ by the nucleophilic substitution reaction between an alkyl bromide compound ethyl α-bromophenylacetate and sodium iodide (NaI). At the same time, excessive NaI is also acted as a highly active catalyst by forming halogen bonds with terminal iodine of the polymer chains in this system to make it capable of precisely synthesizing polymethacrylates with narrow dispersities (Đ = 1.03-1.10). In addition, the strong penetration ability of NIR LED light is illustrated by the successful polymerization even through 11 pieces of A4 paper.
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Affiliation(s)
- Haitao Zhao
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Haihui Li
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Chun Tian
- Chinese Academy of Sciences, Ningbo Institute of Material Technology and Engineering, Ningbo, Zhejiang, 315201, China
| | - Lifen Zhang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Zhenping Cheng
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
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6
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Rosenbloom SI, Sifri RJ, Fors BP. Achieving molecular weight distribution shape control and broad dispersities using RAFT polymerizations. Polym Chem 2021. [DOI: 10.1039/d1py00399b] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Metered additions of chain transfer agents are used to control molecular weight distribution (MWD) features in reversible addition-fragmentation chain-transfer polymerizations, giving polymers with tailored MWD shapes and dispersities as high as 6.2.
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Affiliation(s)
- Stephanie I. Rosenbloom
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York, 14853, USA
| | - Renee J. Sifri
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York, 14853, USA
| | - Brett P. Fors
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York, 14853, USA
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7
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Hampu N, Werber JR, Chan WY, Feinberg EC, Hillmyer MA. Next-Generation Ultrafiltration Membranes Enabled by Block Polymers. ACS NANO 2020; 14:16446-16471. [PMID: 33315381 DOI: 10.1021/acsnano.0c07883] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Reliable and equitable access to safe drinking water is a major and growing challenge worldwide. Membrane separations represent one of the most promising strategies for the energy-efficient purification of potential water sources. In particular, porous membranes are used for the ultrafiltration (UF) of water to remove contaminants with nanometric sizes. However, despite exhibiting excellent water permeability and solution processability, existing UF membranes contain a broad distribution of pore sizes that limit their size selectivity. To maximize the potential utility of UF membranes and allow for precise separations, improvements in the size selectivity of these systems must be achieved. Block polymers represent a potentially transformative solution, as these materials self-assemble into well-defined domains of uniform size. Several different strategies have been reported for integrating block polymers into UF membranes, and each strategy has its own set of materials and processing considerations to ensure that uniform and continuous pores are generated. This Review aims to summarize and critically analyze the chemistries, processing techniques, and properties required for the most common methods for producing porous membranes from block polymers, with a particular focus on the fundamental mechanisms underlying block polymer self-assembly and pore formation. Critical structure-property-performance metrics will be analyzed for block polymer UF membranes to understand how these membranes compare to commercial UF membranes and to identify key research areas for continued improvements. This Review is intended to inform readers of the capabilities and current challenges of block polymer UF membranes, while stimulating critical thought on strategies to advance these technologies.
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Affiliation(s)
- Nicholas Hampu
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Jay R Werber
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Wui Yarn Chan
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Elizabeth C Feinberg
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Marc A Hillmyer
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
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8
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Dispersity effects on phase behavior and structural evolution in ultrathin films of a deuterated polystyrene-block-poly(methyl methacrylate) diblock copolymer. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.123027] [Citation(s) in RCA: 3] [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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9
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Rosenbloom SI, Fors BP. Shifting Boundaries: Controlling Molecular Weight Distribution Shape for Mechanically Enhanced Thermoplastic Elastomers. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00954] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Stephanie I. Rosenbloom
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Brett P. Fors
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
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10
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Liu H, Xue YH, Zhu YL, Gu FL, Lu ZY. Inverse Design of Molecular Weight Distribution in Controlled Polymerization via a One-Pot Reaction Strategy. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01383] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Hong Liu
- Key Laboratory of Theoretical Chemistry of Environment Ministry of Education, School of Chemistry, South China Normal University, Guangzhou 510006, China
| | - Yao-Hong Xue
- Information Science School, Guangdong University of Finance and Economics, Guangzhou 510320, China
| | - You-Liang Zhu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Feng-Long Gu
- Key Laboratory of Theoretical Chemistry of Environment Ministry of Education, School of Chemistry, South China Normal University, Guangzhou 510006, China
| | - Zhong-Yuan Lu
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, College of Chemistry, Jilin University, Changchun 130023, China
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11
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Kim I, Shi R, Choe Y, Kim EJ, Kim BJ, Qian HJ, Li S. Stabilization of complex morphologies in highly disperse AB diblock copolymers. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122519] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Su Z, Zhang R, Yan XY, Guo QY, Huang J, Shan W, Liu Y, Liu T, Huang M, Cheng SZ. The role of architectural engineering in macromolecular self-assemblies via non-covalent interactions: A molecular LEGO approach. Prog Polym Sci 2020. [DOI: 10.1016/j.progpolymsci.2020.101230] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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13
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Bao J, Dong X, Chen S, Lu W, Zhang X, Chen W. Confined crystallization, melting behavior and morphology in PEG‐
b
‐PLA diblock copolymers: Amorphous versus crystalline PLA. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20190077] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jianna Bao
- School of Materials Science and EngineeringZhejiang Sci‐Tech University Hangzhou China
| | - Xiaolei Dong
- School of Materials Science and EngineeringZhejiang Sci‐Tech University Hangzhou China
| | - Shichang Chen
- School of Materials Science and EngineeringZhejiang Sci‐Tech University Hangzhou China
| | - Wangyang Lu
- School of Materials Science and EngineeringZhejiang Sci‐Tech University Hangzhou China
| | - Xianming Zhang
- School of Materials Science and EngineeringZhejiang Sci‐Tech University Hangzhou China
| | - Wenxing Chen
- School of Materials Science and EngineeringZhejiang Sci‐Tech University Hangzhou China
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14
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Xu H, Greve EM, Mahanthappa MK. Morphological Impact of Segment Dispersity in Lithium Salt-Doped Poly(styrene)/Poly(ethylene oxide) Triblock Polymers. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00900] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Hongyun Xu
- Department of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Avenue S.E., Minneapolis, Minnesota 55455, United States
| | - Eric M. Greve
- Department of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Mahesh K. Mahanthappa
- Department of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Avenue S.E., Minneapolis, Minnesota 55455, United States
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15
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Affiliation(s)
- Inho Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Sheng Li
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
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16
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Liu X, Wang C, Goto A. Polymer Dispersity Control by Organocatalyzed Living Radical Polymerization. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814573] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Xu Liu
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
| | - Chen‐Gang Wang
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
| | - Atsushi Goto
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
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17
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Liu X, Wang C, Goto A. Polymer Dispersity Control by Organocatalyzed Living Radical Polymerization. Angew Chem Int Ed Engl 2019; 58:5598-5603. [DOI: 10.1002/anie.201814573] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 02/09/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Xu Liu
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
| | - Chen‐Gang Wang
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
| | - Atsushi Goto
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
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18
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von Tiedemann P, Blankenburg J, Maciol K, Johann T, Müller AHE, Frey H. Copolymerization of Isoprene with p-Alkylstyrene Monomers: Disparate Reactivity Ratios and the Shape of the Gradient. Macromolecules 2019. [DOI: 10.1021/acs.macromol.8b02280] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Philipp von Tiedemann
- Institute of Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
- Graduate School
Materials Science in Mainz, Staudinger Weg 9, 55128 Mainz, Germany
| | - Jan Blankenburg
- Institute of Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
- Graduate School
Materials Science in Mainz, Staudinger Weg 9, 55128 Mainz, Germany
| | - Kamil Maciol
- Institute of Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Tobias Johann
- Institute of Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
- Max Planck Graduate
Center with the Johannes Gutenberg University, Staudinger Weg 6, 55128 Mainz, Germany
| | - Axel H. E. Müller
- Institute of Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Holger Frey
- Institute of Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
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19
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Pitet LM, Chamberlain BM, Hauser AW, Hillmyer MA. Dispersity and architecture driven self-assembly and confined crystallization of symmetric branched block copolymers. Polym Chem 2019. [DOI: 10.1039/c9py01173k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Architectural variety in the form of branching combined with disparate dispersities in block polymers have been exploited to access microphase morphologies outside the conventional phase windows typically observed in uniform linear analogs.
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Affiliation(s)
- Louis M. Pitet
- Department of Chemistry
- University of Minnesota
- Minneapolis
- USA
- Institute for Materials Research (IMO) and Department of Chemistry
| | | | - Adam W. Hauser
- Department of Chemistry
- University of Minnesota
- Minneapolis
- USA
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20
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Gentekos DT, Fors BP. Molecular Weight Distribution Shape as a Versatile Approach to Tailoring Block Copolymer Phase Behavior. ACS Macro Lett 2018; 7:677-682. [PMID: 35632976 DOI: 10.1021/acsmacrolett.8b00295] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The molecular weight distributions (MWDs) of block copolymers significantly impact their morphological phase behavior, but exploiting these features as a means to tune material properties has been limited to the MWD breadth, or dispersity (Đ). Manipulation of the entire MWD has promising potential to address this challenge by providing a convenient and versatile route toward tailoring polymer nanostructure. Herein, we describe the self-assembly of poly(styrene)-block-poly(2-vinylpyridine) (PS-b-P2VP) where the PS blocks have systematically deviating compositions of molecular weights. We find that controlling the MWD shape, breadth and skew, afforded access to different morphologies in samples with the same molecular characteristics, including Đ. As such, we illustrate the generality and effectiveness of this strategy and anticipate that it will facilitate the increased deployment of disperse polymer compositions in advanced materials applications.
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Affiliation(s)
- Dillon T. Gentekos
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Brett P. Fors
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
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21
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Corrigan N, Manahan R, Lew ZT, Yeow J, Xu J, Boyer C. Copolymers with Controlled Molecular Weight Distributions and Compositional Gradients through Flow Polymerization. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00673] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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22
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Gentekos DT, Jia J, Tirado ES, Barteau KP, Smilgies DM, DiStasio RA, Fors BP. Exploiting Molecular Weight Distribution Shape to Tune Domain Spacing in Block Copolymer Thin Films. J Am Chem Soc 2018. [DOI: 10.1021/jacs.8b00694] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Dillon T. Gentekos
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Junteng Jia
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Erika S. Tirado
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Katherine P. Barteau
- Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Detlef-M. Smilgies
- Cornell High Energy Synchrotron Source (CHESS), Cornell University, Ithaca, New York 14853, United States
| | - Robert A. DiStasio
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Brett P. Fors
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
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23
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Grubbs RB, Grubbs RH. 50th Anniversary Perspective: Living Polymerization—Emphasizing the Molecule in Macromolecules. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01440] [Citation(s) in RCA: 229] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Robert B. Grubbs
- Chemistry
Department, Stony Brook University, Stony Brook, New York 11794, United States
| | - Robert H. Grubbs
- Department
of Chemistry, California Institute of Technology, Pasadena, California 91125, United States
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24
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Schmitt AK, Mahanthappa MK. Order and Disorder in High χ/Low N, Broad Dispersity ABA Triblock Polymers. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01452] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Adam K. Schmitt
- Department
of Chemistry, University of Wisconsin—Madison, 1101 University Ave., Madison, Wisconsin 53706, United States
| | - Mahesh K. Mahanthappa
- Department
of Chemistry, University of Wisconsin—Madison, 1101 University Ave., Madison, Wisconsin 53706, United States
- Department
of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Ave. S.E., Minneapolis, Minnesota 55455, United States
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25
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Vanderlaan ME, Hillmyer MA. “Uncontrolled” Preparation of Disperse Poly(lactide)-block-poly(styrene)-block-poly(lactide) for Nanopatterning Applications. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b02014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Marie E. Vanderlaan
- Department
of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Marc A. Hillmyer
- Department
of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
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26
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Kottisch V, Gentekos DT, Fors BP. "Shaping" the Future of Molecular Weight Distributions in Anionic Polymerization. ACS Macro Lett 2016; 5:796-800. [PMID: 35614766 DOI: 10.1021/acsmacrolett.6b00392] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Varying molecular weight distributions (MWDs) have the potential to precisely tune polymer properties, but this approach remains relatively unexplored owing to a lack of synthetic methods that provide control over the exact makeup of a distribution. Herein, we report a simple and highly efficient strategy for addressing this challenge through temporal regulation of initiation in the anionic polymerization of styrene. This method yields unprecedented control over the shape of the polymer MWD and facilitates the synthesis of diblock copolymers with controlled MWD compositions. Importantly, we show that the MWD symmetry has a marked influence on the stiffness of poly(styrene-block-isoprene) copolymers, which demonstrates that varying MWD shape is an effective method for altering polymer properties.
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Affiliation(s)
| | | | - Brett P. Fors
- Cornell University, Ithaca, New York 14853, United States
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27
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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2014. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2015.09.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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28
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HIRAI T. Design and Fabrication of Polymer Interfaces and Evaluation of Their Molecular Aggregation Structure. KOBUNSHI RONBUNSHU 2016. [DOI: 10.1295/koron.2016-0025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Tomoyasu HIRAI
- Institute for Materials Chemistry and Engineering, Kyushu University
- Graduate School of Engineering, Kyushu University
- International Institute for Carbon-Neutral Energy Research (WPI I2CNER), Kyushu University
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29
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Huang JH, Wu JJ, Huang XW. Self-assembly of symmetric rod-coil diblock copolymers in cylindrical nanopore. RSC Adv 2016. [DOI: 10.1039/c6ra22122j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Self-assembly of rod-coil (RC) symmetric diblock copolymers (DBCs) in a cylindrical nanopore is investigated by performing dissipative particle dynamics simulation.
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Affiliation(s)
- Jian-Hua Huang
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Jia-Jun Wu
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Xiao-Wei Huang
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
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30
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Pitet LM, Alexander-Moonen E, Peeters E, Druzhinina TS, Wuister SF, Lynd NA, Meijer EW. Probing the Effect of Molecular Nonuniformity in Directed Self-Assembly of Diblock Copolymers in Nanoconfined Space. ACS NANO 2015; 9:9594-9602. [PMID: 26503195 DOI: 10.1021/nn505886z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Various complex self-assembled morphologies of lamellar- and cylinder-forming block copolymers comprising poly(dimethylsiloxane)-b-polylactide (PDMS-b-PLA) confined in cylindrical channels were generated. Combining top-down lithography with bottom-up block copolymer self-assembly grants access to morphologies that are otherwise inaccessible with the bulk materials. Channel diameter (D) was systematically varied with four diblock copolymers having different compositions and bulk domain spacing (L0), corresponding to a range of frustration ratios (D/L0 from 2 to 4). Excessive packing frustration imposed by the channels leads to contorted domains. The resulting morphologies depend strongly on both D/L0 and copolymer composition. Under several circumstances, mixtures of complex morphologies were observed, which hypothetically arise from the severe sensitivity to D/L0 combined with the inherent compositional/molar mass dispersities associated with the nonuniform synthetic materials and silicon templates. Stochastic calculations offer compelling support for the hypothesis, and tractable pathways toward solving this apparent conundrum are proposed. The materials hold great promise for next-generation nanofabrication to address several emerging technologies, offering significantly enhanced versatility to basic diblock copolymers as templates for fabricating complex nanoscale objects.
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Affiliation(s)
- Louis M Pitet
- Institute for Complex Molecular Systems and Laboratory for Macromolecular and Organic Chemistry, Eindhoven University of Technology , P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Els Alexander-Moonen
- Philips Group Innovation, Research , High Tech Campus 7, 5656 AE Eindhoven, The Netherlands
| | - Emiel Peeters
- Philips Group Innovation, Research , High Tech Campus 7, 5656 AE Eindhoven, The Netherlands
| | | | | | - Nathaniel A Lynd
- McKetta Department of Chemical Engineering, University of Texas at Austin , Austin, Texas 78712, United States
| | - E W Meijer
- Institute for Complex Molecular Systems and Laboratory for Macromolecular and Organic Chemistry, Eindhoven University of Technology , P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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31
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Gillard TM, Phelan D, Leighton C, Bates FS. Determination of the Lamellae-to-Disorder Heat of Transition in a Short Diblock Copolymer by Relaxation Calorimetry. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00881] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Timothy M. Gillard
- Department
of Chemical Engineering
and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Daniel Phelan
- Department
of Chemical Engineering
and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Chris Leighton
- 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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32
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Tong ZZ, Xue JQ, Wang RY, Huang J, Xu JT, Fan ZQ. Hierarchical self-assembly, photo-responsive phase behavior and variable tensile property of azobenzene-containing ABA triblock copolymers. RSC Adv 2015. [DOI: 10.1039/c4ra12844c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of triblock copolymers with liquid crystalline (LC) poly{6-[4-(4-methoxyphenylazo)phenoxy]hexyl methacrylate} (PMMAZO) as the end blocks and rubbery poly(n-butyl acrylate) (PnBA) as the midblock were synthesized.
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Affiliation(s)
- Zai-Zai Tong
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science & Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Jin-Qiao Xue
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science & Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Rui-Yang Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science & Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Jie Huang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science & Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Jun-Ting Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science & Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Zhi-Qiang Fan
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science & Engineering
- Zhejiang University
- Hangzhou 310027
- China
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33
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Chang R, Huang Y, Shan G, Bao Y, Yun X, Dong T, Pan P. Alternating poly(lactic acid)/poly(ethylene-co-butylene) supramolecular multiblock copolymers with tunable shape memory and self-healing properties. Polym Chem 2015. [DOI: 10.1039/c5py00742a] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PLA/PEB SMPs with tunable shape memory and self-healing properties were prepared by end functionalization of PLA–PEB–PLA with UPy units.
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Affiliation(s)
- Ruoxing Chang
- State Key Laboratory of Chemical Engineering
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Yongfeng Huang
- State Key Laboratory of Chemical Engineering
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Guorong Shan
- State Key Laboratory of Chemical Engineering
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Yongzhong Bao
- State Key Laboratory of Chemical Engineering
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Xueyan Yun
- College of Food Science and Engineering
- Inner Mongolia Agricultural University
- Inner Mongolia 010018
- China
| | - Tungalag Dong
- College of Food Science and Engineering
- Inner Mongolia Agricultural University
- Inner Mongolia 010018
- China
| | - Pengju Pan
- State Key Laboratory of Chemical Engineering
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
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34
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Walker CN, Bryson KC, Hayward RC, Tew GN. Wide bicontinuous compositional windows from co-networks made with telechelic macromonomers. ACS NANO 2014; 8:12376-85. [PMID: 25415537 DOI: 10.1021/nn505026a] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Phase-separated and self-assembled co-network materials offer a simple route to bicontinuous morphologies, which are expected to be highly beneficial for applications such as ion, charge, and oxygen transport. Despite these potential advantages, the programmed creation of co-network structures has not been achieved, largely due to the lack of well-controlled chemistries for their preparation. Here, a thiol-ene end-linking platform enables the systematic investigation of phase-separated poly(ethylene glycol) (PEG) and polystyrene (PS) networks in terms of the molecular weight and relative volume fractions of precursor polymers. The ion conductivity and storage modulus of these materials serve as probes to demonstrate that both phases percolate over a wide range of compositions, spanning PEG volume fractions from ∼0.3-0.65. Small angle X-ray scattering (SAXS) shows that microphase separation of these co-networks yields disordered structures with d-spacings that follow d∼Mn0.5, for 4.8 kg/mol<Mn<37 kg/mol, where Mn is the molecular weight of the precursor polymers at the same ratio of PEG to PS. Over this range of molecular weights and corresponding d-spacings (22-55 nm), the ion conductivity (10(-4.7) S/cm at 60 °C), thermal properties (two glass transitions, low PEG crystallinity), and mechanical properties (storage modulus ≈90 MPa at 30 °C) remained similar. These findings demonstrate that this approach to thiol-ene co-networks is a versatile platform to create bicontinuous morphologies.
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Affiliation(s)
- Catherine N Walker
- Department of Polymer Science & Engineering and ‡Department of Veterinary and Animal Science, University of Massachusetts , Amherst, Massachusetts 01003, United States
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35
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Zhang Y, Sargent JL, Boudouris BW, Phillip WA. Nanoporous membranes generated from self-assembled block polymer precursors:Quo Vadis? J Appl Polym Sci 2014. [DOI: 10.1002/app.41683] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Yizhou Zhang
- Department of Chemical and Biomolecular Engineering; University of Notre Dame; Notre Dame Indiana 46556
| | - Jessica L. Sargent
- School of Chemical Engineering, Purdue University; West Lafayette Indiana 47907
| | - Bryan W. Boudouris
- School of Chemical Engineering, Purdue University; West Lafayette Indiana 47907
| | - William A. Phillip
- Department of Chemical and Biomolecular Engineering; University of Notre Dame; Notre Dame Indiana 46556
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36
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Huang Y, Pan P, Shan G, Bao Y. Polylactide-b-poly(ethylene-co-butylene)-b-polylactide thermoplastic elastomers: role of polylactide crystallization and stereocomplexation on microphase separation, mechanical and shape memory properties. RSC Adv 2014. [DOI: 10.1039/c4ra08612k] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
PLA–PEB–PLA copolymers containing PLA segments with different stereo-regularities were prepared via the ROP of various lactides using PEB as the macromolecular initiator.
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Affiliation(s)
- Yongfeng Huang
- State Key Laboratory of Chemical Engineering
- Department of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027, China
| | - Pengju Pan
- State Key Laboratory of Chemical Engineering
- Department of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027, China
| | - Guorong Shan
- State Key Laboratory of Chemical Engineering
- Department of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027, China
| | - Yongzhong Bao
- State Key Laboratory of Chemical Engineering
- Department of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027, China
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