1
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Liu C, Jiang S, Luo C, Lu Y. State Transitions and Crystalline Structures of Single Polyethylene Rings: MD Simulations. J Phys Chem B 2024; 128:6598-6609. [PMID: 38941574 DOI: 10.1021/acs.jpcb.4c01143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/30/2024]
Abstract
This study investigates the structural changes of cyclic polyethylene (PE) single chains during cooling through molecular dynamics simulations. The influence of topological constraint on a ring is examined by comparing it with the results of its linear counterpart. A pseudo phase diagram of state transition for PE rings based on length and temperature is constructed, revealing a consistent chain-folding transition during cooling. The shape anisotropy of short crystallized cyclic chains exhibits oscillations with chain length, leading to a more pronounced odd-even effect in single cyclic chains compared with the linear ones. A honeycomb model is proposed to elucidate the odd-even effect of chain folding in crystalline structures of single linear and cyclic chains, and we discuss its potential to predict surface tension. Analyses of the tight folding model and the re-entry modes demonstrate that a cyclic chain possesses a shorter average crystalline stem length and a more compact folded structure than its linear counterpart. The findings highlight the impact of topological change on crystallization and the odd-even effect of chain length, providing valuable insights for understanding polymer crystallization with different topologies.
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Affiliation(s)
- Chao Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Shengming Jiang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Chuanfu Luo
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Yuyuan Lu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
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2
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Zhu L, Li J, Li H, Liu B, Chen J, Jiang S. Crystallization and melting of unentangled poly(ε-caprolactone) cycles containing pendants. SOFT MATTER 2023. [PMID: 37470097 DOI: 10.1039/d3sm00591g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
The Rouse model provides a basic framework to understand the chain dynamics of polymers, which is confirmed to be more suitable for exploring the linear dynamics of unentangled polymers. The crystalline morphology governed by chain dynamics and crystallization kinetics is expected to differ in linear and cyclic polymers. Cyclic poly(ε-caprolactone)s (c-PCLs) containing two bi-anthracenyl group pendants with molecular weights close to the critical molecular weight (Mc) were synthesized to investigate the chain dynamics based crystallization and melting behavior by DSC, POM, and in situ simultaneous small-angle X-ray scattering/wide-angle X-ray scattering (SAXS/WAXS) investigations during heating of the isothermally crystallized samples. Double endothermic peaks were observed in the DSC curves with a low heating rate of c-PCLs without entanglement after isothermal crystallization, especially for c-PCLs with Mc. The structure evolution of the crystalline structures observed from the in situ investigations during the heating and double endothermic peaks in DSC heating curves of the c-PCLs indicate the role of pendants in the chain dynamics, which leads to the reorganization of the metastable structures. Banded spherulites of c-PCL without entanglement were observed for the first time, and the uneven growth of spherulites along the radial direction may be caused by the mismatch between chain dynamics and crystallization kinetics.
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Affiliation(s)
- Liuyong Zhu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
- School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Jingqing Li
- School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Hongfei Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Binyuan Liu
- Hebei Key Laboratory of Functional Polymer Materials, School of Chemical Engineering and Science, Hebei University of Technology, Tianjin 300130, China.
| | - Jizhong Chen
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
| | - Shichun Jiang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
- School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
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3
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Zhao Y, Liang Y, Yao Y, Wang H, Lin T, Gao Y, Wang X, Xue G. Chain Dynamics of Partially Disentangled UHMWPE around Melting Point Characterized by 1H Low-Field Solid-State NMR. Polymers (Basel) 2023; 15:polym15081910. [PMID: 37112057 PMCID: PMC10142606 DOI: 10.3390/polym15081910] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/09/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023] Open
Abstract
Melts of ultrahigh molecular weight polyethylene (UHMWPE) entangled significantly, suffering processing difficulty. In this work, we prepared partially disentangled UHMWPE by freeze-extracting, exploring the corresponding enchantment of chain mobility. Fully refocused 1H free induction decay (FID) was used to capture the difference in chain segmental mobility during the melting of UHMWPE with different degrees of entanglement by low-field solid-state NMR. The longer the polyethylene (PE) chain is in a less-entangled state, the harder the process of merging into mobile parts after detaching from crystalline lamella during melting. 1H double quantum (DQ) NMR was further used to obtain information caused by residual dipolar interaction. Before melting, the DQ peak appeared earlier in intramolecular-nucleated PE than in intermolecular-nucleated PE because of the strong constraints of crystals in the former one. During melting, less-entangled UHMWPE could keep disentangled while less-entangled high density polyethylene (HDPE) could not. Unfortunately, no noticeable difference was found in DQ experiments between PE melts with different degrees of entanglement after melting. It was ascribed to the small contribution of entanglements compared with total residual dipolar interaction in melts. Overall, less-entangled UHMWPE could reserve its disentangled state around the melting point long enough to achieve a better way of processing.
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Affiliation(s)
- Yan Zhao
- Key Laboratory of High-Performance Polymer Materials and Technology of Ministry of Education, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yuling Liang
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, China
| | - Yingjie Yao
- Key Laboratory of High-Performance Polymer Materials and Technology of Ministry of Education, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Hao Wang
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, China
| | - Tong Lin
- Key Laboratory of High-Performance Polymer Materials and Technology of Ministry of Education, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yun Gao
- Key Laboratory of High-Performance Polymer Materials and Technology of Ministry of Education, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xiaoliang Wang
- Key Laboratory of High-Performance Polymer Materials and Technology of Ministry of Education, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Gi Xue
- Key Laboratory of High-Performance Polymer Materials and Technology of Ministry of Education, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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4
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Hagita K, Murashima T, Sakata N, Shimokawa K, Deguchi T, Uehara E, Fujiwara S. Molecular Dynamics of Topological Barriers on the Crystallization Behavior of Ring Polyethylene Melts with Trefoil Knots. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Katsumi Hagita
- Department of Applied Physics, National Defense Academy, 1-10-20, Hashirimizu, Yokosuka239-8686, Japan
| | - Takahiro Murashima
- Department of Physics, Tohoku University, 6-3, Aramaki-aza-Aoba, Aoba-ku, Sendai980-8578, Japan
| | - Naoki Sakata
- Department of Mathematics, Saitama University, 255, Shimo-Okubo, Sakura-ku, Saitama338-8570, Japan
- Department of Physics, Ochanomizu University, 2-1-1, Otsuka, Bunkyo-ku, Tokyo112-8610, Japan
| | - Koya Shimokawa
- Department of Mathematics, Saitama University, 255, Shimo-Okubo, Sakura-ku, Saitama338-8570, Japan
- Department of Mathematics, Ochanomizu University, 2-1-1, Otsuka, Bunkyo-ku, Tokyo112-8610, Japan
| | - Tetsuo Deguchi
- Department of Physics, Ochanomizu University, 2-1-1, Otsuka, Bunkyo-ku, Tokyo112-8610, Japan
| | - Erica Uehara
- Department of Physics, Ochanomizu University, 2-1-1, Otsuka, Bunkyo-ku, Tokyo112-8610, Japan
| | - Susumu Fujiwara
- Faculty of Materials Science and Engineering, Kyoto Institute of Technology, Matsugasaki,
Sakyo-ku, Kyoto606-8585, Japan
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5
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Li Y, Tao W, Chen W. Evidence for complexation-induced micro-extension of poly(vinyl alcohol) chains in interphase and amorphous domains from solid-state NMR. SOFT MATTER 2022; 18:8974-8982. [PMID: 36382492 DOI: 10.1039/d2sm01136k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The three-phase structure of poly(vinyl alcohol) (PVA)-iodine complexes was elucidated by solid-state NMR (SSNMR), of which the micro-extension of the PVA segment in the interphase and amorphous domains was directly confirmed. The three-phase structure of the PVA-iodine complex was decomposed by the inverse 13C T1-filter, where 13C NMR resonance lines of a C(H) triplet were observed in all three phases. The chain axis of ∼26% extended chains in the interphase deviates 35°-50° relative to the stretching direction, while there is only a 1° deviation for the extended chains in the crystalline domain. The increasing iodine concentration results in the increment of hydrogen-bonded C(H) fractions in both the amorphous and interphase domains, while the distribution of different C(H) fractions remains almost constant in the crystalline domain. Such an increment results from the locally extended PVA chains induced by polyiodine species (I3-/I5-), since the hydrogen bond(s) (HBs) required a specific direction. Direct evidence for this comes from the similar 13C CP/MAS spectra of C(H) in the three phases between unoriented iodine-doped PVA and highly oriented pure PVA. This supports the aggregation model for the formation mechanism of PVA-iodine complexes, where the PVA chain takes an extended zig-zag conformation.
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Affiliation(s)
- Yahui Li
- National Synchrotron Radiation Laboratory, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China.
| | - Wei Tao
- National Synchrotron Radiation Laboratory, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China.
| | - Wei Chen
- National Synchrotron Radiation Laboratory, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China.
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6
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Wei Y, Zhou Z, Hao T, Nie Y. Molecular dynamics simulation on the crystallization behavior of cyclic polyethylene affected by functionalized carbon nanotubes. J Appl Polym Sci 2022. [DOI: 10.1002/app.52481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yangyang Wei
- Research School of Polymeric Materials, School of Materials Science and Engineering Jiangsu University Zhenjiang China
| | - Zhiping Zhou
- Research School of Polymeric Materials, School of Materials Science and Engineering Jiangsu University Zhenjiang China
| | - Tongfan Hao
- Research School of Polymeric Materials, School of Materials Science and Engineering Jiangsu University Zhenjiang China
| | - Yijing Nie
- Research School of Polymeric Materials, School of Materials Science and Engineering Jiangsu University Zhenjiang China
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7
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Affiliation(s)
- Manisha Handa
- Department of Chemistry, University of Delhi, Delhi-110007, India
| | - Parbati Biswas
- Department of Chemistry, University of Delhi, Delhi-110007, India
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8
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Yang PB, Davidson MG, Edler KJ, Brown S. Synthesis, Properties, and Applications of Bio-Based Cyclic Aliphatic Polyesters. Biomacromolecules 2021; 22:3649-3667. [PMID: 34415743 DOI: 10.1021/acs.biomac.1c00638] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Cyclic polymers have long been reported in the literature, but their development has often been stunted by synthetic difficulties such as the presence of linear contaminants. Research into the synthesis of these polymers has made great progress in the past decade, and this review covers the synthesis, properties, and applications of cyclic polymers, with an emphasis on bio-based aliphatic polyesters. Synthetic routes to cyclic polymers synthesized from bioderived monomers, alongside mechanistic descriptions for both ring closure and ring expansion polymerization approaches, are reviewed. The review also highlights some of the unique physical properties of cyclic polymers together with potential applications. The findings illustrate the substantial recent developments made in the syntheses of cyclic polymers, as well as the progress which can be made in the commercialization of bio-based polymers through the versatility this topology provides.
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Affiliation(s)
- Philip B Yang
- University of Bath, Claverton Down, Bath, BA2 7AY United Kingdom
| | | | - Karen J Edler
- University of Bath, Claverton Down, Bath, BA2 7AY United Kingdom
| | - Steven Brown
- Scott Bader, Wollaston, Wellingborough, NN29 7RJ, United Kingdom
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9
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Asakura T, Ibe Y, Jono T, Naito A. Structure and dynamics of biodegradable polyurethane-silk fibroin composite materials in the dry and hydrated states studied using 13C solid-state NMR spectroscopy. Polym Degrad Stab 2021. [DOI: 10.1016/j.polymdegradstab.2021.109645] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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10
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Tanaka T, Ibe Y, Jono T, Tanaka R, Naito A, Asakura T. Characterization of a Water-Dispersed Biodegradable Polyurethane-Silk Composite Sponge Using 13C Solid-State Nuclear Magnetic Resonance as Coating Material for Silk Vascular Grafts with Small Diameters. Molecules 2021; 26:4649. [PMID: 34361802 PMCID: PMC8347230 DOI: 10.3390/molecules26154649] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 07/12/2021] [Accepted: 07/27/2021] [Indexed: 11/30/2022] Open
Abstract
Recently, Bombyx mori silk fibroin (SF) has been shown to be a suitable material for vascular prostheses for small arteries. In this study, we developed a softer SF graft by coating water-dispersed biodegradable polyurethane (PU) based on polycaprolactone and an SF composite sponge on the knitted SF vascular graft. Three kinds of 13C solid-state nuclear magnetic resonance (NMR), namely carbon-13 (13C) cross-polarization/magic angle spinning (MAS), 13C dipolar decoupled MAS, and 13C refocused insensitive nuclei enhanced by polarization transfer (r-INEPT) NMR, were used to characterize the PU-SF coating sponge. Especially the 13C r-INEPT NMR spectrum of water-dispersed biodegradable PU showed that both main components of the non-crystalline domain of PU and amorphous domain of SF were highly mobile in the hydrated state. Then, the small-diameter SF artificial vascular grafts coated with this sponge were evaluated through implantation experiments with rats. The implanted PU-SF-coated SF grafts showed a high patency rate. It was confirmed that the inside of the SF grafts was covered with vascular endothelial cells 4 weeks after implantation. These results showed that the water-dispersed biodegradable PU-SF-coated SF graft created in this study could be a strong candidate for small-diameter artificial vascular graft.
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Affiliation(s)
- Takashi Tanaka
- Department of Veterinary Science, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan; (T.T.); (R.T.)
| | - Yusuke Ibe
- Polyurethane Research Laboratory, Tosoh Corporation, Mie 510-8540, Japan; (Y.I.); (T.J.)
| | - Takaki Jono
- Polyurethane Research Laboratory, Tosoh Corporation, Mie 510-8540, Japan; (Y.I.); (T.J.)
| | - Ryo Tanaka
- Department of Veterinary Science, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan; (T.T.); (R.T.)
| | - Akira Naito
- Department of Biotechnology, Tokyo University of Agriculture and Technology, Tokyo 184-8588, Japan;
| | - Tetsuo Asakura
- Department of Biotechnology, Tokyo University of Agriculture and Technology, Tokyo 184-8588, Japan;
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11
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Ruiz MB, Pérez-Camargo RA, López JV, Penott-Chang E, Múgica A, Coulembier O, Müller AJ. Accelerating the crystallization kinetics of linear polylactides by adding cyclic poly (L-lactide): Nucleation, plasticization and topological effects. Int J Biol Macromol 2021; 186:255-267. [PMID: 34246673 DOI: 10.1016/j.ijbiomac.2021.07.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 06/29/2021] [Accepted: 07/02/2021] [Indexed: 10/20/2022]
Abstract
Polylactide is one of the most versatile biopolymers, but its slow crystallization limits its temperature usage range. Hence finding ways to enhance it is crucial to widen its applications. Linear and cyclic poly (L-lactide) (l-PLLA and c-PLLA) of similarly low molecular weights (MW) were synthesized by ring-opening polymerization of L-lactide, and ring-expansion methodology, respectively. Two types of blends were prepared by solution mixing: (a) l-PLLA/c-PLLA, at extreme compositions (rich in linear or in cyclic chains), and (b) blends of each of these low MW materials with a commercial high MW linear PLA. The crystallization of the different blends was evaluated by polarized light optical microscopy and differential scanning calorimetry. It was found, for the first time, that in the l-PLLA rich blends, small amounts of c-PLLA (i.e., 5 and 10 wt%) increase the nucleation density, nucleation rate (1/τ0), spherulitic growth rate (G), and overall crystallization rate (1/τ50%), when compared to neat l-PLLA, due to a synergistic effect (i.e., nucleation plus plasticization). In contrast, the opposite effect was found in the c-PLLA rich blends. The addition of small amounts of l-PLLA to a matrix of c-PLLA chains causes a decrease in the nucleation density, 1/τ0, G, and 1/τ50% values, due to threading effects between cyclic and linear chains. Small amounts of l-PLLA and c-PLLA enhance the crystallization ability of a commercial high MW linear PLA without affecting its melting temperature. The l-PLLA only acts as a plasticizer for the PLA matrix, whereas c-PLLA has a synergistic effect in accelerating the crystallization of PLA that goes beyond simple plasticization. The addition of small amounts of c-PLLA affects not only PLA crystal growth but also its nucleation due to the unique cyclic chains topology.
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Affiliation(s)
- Marina Betegón Ruiz
- POLYMAT and Department of Polymers and Advanced Materials: Physics, Chemistry and Technology, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018 Donostia-San Sebastián, Spain
| | - Ricardo A Pérez-Camargo
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Juan V López
- Grupo de Polímeros USB, Departamento de Ciencia de los Materiales, Universidad Simón Bolívar, Apartado 89000, Caracas 1080-A, Venezuela
| | - Evis Penott-Chang
- Grupo de Polímeros USB, Departamento de Ciencia de los Materiales, Universidad Simón Bolívar, Apartado 89000, Caracas 1080-A, Venezuela
| | - Agurtzane Múgica
- POLYMAT and Department of Polymers and Advanced Materials: Physics, Chemistry and Technology, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018 Donostia-San Sebastián, Spain
| | - Olivier Coulembier
- Laboratory of Polymeric and Composite Materials, University of Mons - UMONS, Place du Parc 23, 7000 Mons, Belgium
| | - Alejandro J Müller
- POLYMAT and Department of Polymers and Advanced Materials: Physics, Chemistry and Technology, 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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12
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Chen L, Wu L, Song L, Xia Z, Lin Y, Chen W, Li L. The recovery of nano-sized carbon black filler structure and its contribution to stress recovery in rubber nanocomposites. NANOSCALE 2020; 12:24527-24542. [PMID: 33320147 DOI: 10.1039/d0nr06003h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The hierarchical structural evolution of natural rubber (NR) filled with different contents of nanoscale carbon black (CB) (10 phr-CB10 and 50 phr-CB50) after first loading and recovering for different times was investigated by X-ray nano-CT, wide-angle X-ray scattering (WAXS) and solid state NMR techniques. The CB filler structures as captured by X-ray nano-CT recover gradually with increasing recovering time, but the filler network with different CB contents shows dramatically different structure evolution. For CB10, limited by the filling content, CB particles mainly induces a hydrodynamic effect in spite of deformation or recovering. For CB50, the CB filler forms a 3D connected network, partially destructed during deformation, and the destructed part can be partially recovered during recovery. This suggests that the connected CB filler structure mainly acts as a network reinforcement, whereas the destructed part can induce a hydrodynamic effect. The different effects induced by different CB filling contents are also reflected by the NR matrix, which is reflected by the onset strains εc of strain-induced crystallization (SIC) of NR as captured by WAXS. For CB10, εc remains almost constant, i.e. εc = ca. 1.49, while that of NR with CB50 slightly decreases from initial ca. 1.12 to 0.96 with increasing recovering time up to 50 h. Also, the bound rubber fraction and entangled rubber network remain unchanged after deformation and under different recovery time as detected by the magic sandwich echo (MSE) FID and proton multiple quantum (MQ) NMR. These results demonstrate the key role of the CB filler network in determining the stress-softening behavior of reinforced rubber.
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Affiliation(s)
- Liang Chen
- National Synchrotron Radiation Lab and CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, 230029, China.
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13
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Melt density, equilibrium melting temperature, and crystallization characteristics of highly pure cyclic poly(ε-Caprolactone)s. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122899] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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14
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Jiang N, Chen J, Yu T, Chao A, Kang L, Wu Y, Niu K, Li R, Fukuto M, Zhang D. Cyclic Topology Enhancing Structural Ordering and Stability of Comb-Shaped Polypeptoid Thin Films against Melt-Induced Dewetting. Macromolecules 2020; 53:7601-7612. [PMID: 32952217 PMCID: PMC7498153 DOI: 10.1021/acs.macromol.0c01205] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/21/2020] [Indexed: 12/03/2022]
Abstract
We investigated the effect of cyclic chain topology on the molecular ordering and thermal stability of comb-shaped polypeptoid thin films on silicon (Si) substrates. Cyclic and linear poly(N-decylglycine) (PNDG) bearing long n-decyl side chains were synthesized by ring-opening polymerization of N-decylglycine-derived N-carboxyanhydrides. When the spin-coated thin films were subjected to thermal annealing at temperatures above the melting temperature (T > T m), the cyclic PNDG films exhibited significantly enhanced stability against melt-induced dewetting than the linear counterparts (l-PNDG). When recrystallized at temperatures below the crystallization temperature (T < T c), the homogeneous c-PNDG films exhibit enhanced crystalline ordering relative to the macroscopically dewetted l-PNDG films. Both cyclic and linear PNDG molecules adopt cis-amide conformations in the crystalline film, which transition into trans-amide conformations upon melting. A top-down solvent leaching treatment of both l/c-PNDG films revealed the formation of an irreversibly physisorbed monolayer with similar thickness (ca. 3 nm) on the Si substrate. The physisorbed monolayers are more disordered relative to the respective thicker crystalline films for both cyclic and linear PNDGs. Upon heating above T m, the adsorbed c-PNDG chains adopt trans-amide backbone conformation identical with the free c-PNDG molecules in the molten film. By contrast, the backbone conformations of l-PNDG chains in the adsorbed layers are notably different from those of the free chains in the molten film. We postulate that the conformational disparity between the chains in the physically adsorbed layers versus the free chains in the molten film is an important factor to account for the difference in the thermal stability of PNDG thin films. These findings highlight the use of cyclic chain topology to suppress the melt-induced dewetting in polymer thin films.
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Affiliation(s)
- Naisheng Jiang
- Department of Chemistry
and Macromolecular Studies Group, Louisiana
State University, Baton
Rouge, Louisiana 70803, United States
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Jianxia Chen
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Tianyi Yu
- Department of Chemistry
and Macromolecular Studies Group, Louisiana
State University, Baton
Rouge, Louisiana 70803, United States
| | - Albert Chao
- Department of Chemistry
and Macromolecular Studies Group, Louisiana
State University, Baton
Rouge, Louisiana 70803, United States
| | - Liying Kang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Ying Wu
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Kangmin Niu
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Ruipeng Li
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Masafumi Fukuto
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Donghui Zhang
- Department of Chemistry
and Macromolecular Studies Group, Louisiana
State University, Baton
Rouge, Louisiana 70803, United States
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15
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Programmed folding into spiro-multicyclic polymer topologies from linear and star-shaped chains. Commun Chem 2020; 3:97. [PMID: 36703363 PMCID: PMC9814586 DOI: 10.1038/s42004-020-00355-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 07/14/2020] [Indexed: 01/29/2023] Open
Abstract
The development of precise folding techniques for synthetic polymer chains that replicate the unique structures and functions of biopolymers has long been a key challenge. In particular, spiro-type (i.e., 8-, trefoil-, and quatrefoil-shaped) polymer topologies remain challenging due to their inherent structural complexity. Herein, we establish a folding strategy to produce spiro-type multicyclic polymers via intramolecular ring-opening metathesis oligomerization of the norbornenyl groups attached at predetermined positions along a synthetic polymer precursor. This strategy provides easy access to the desired spiro-type topological polymers with a controllable number of ring units and molecular weight while retaining narrow dispersity (Ɖ < 1.1). This effective strategy marks an advancement in the development of functionalized materials composed of specific three-dimensional nanostructures.
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16
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Morphology and growth rate of spherulite of cyclic poly(ε-caprolactone) having a triazole group at the closing point. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122660] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Watanabe R, Noba M, Uno T, Itoh T, Kubo M. Preparation of polypseudorotaxane composed of linear and cyclic polyethylene oxides and its application to solid polymer electrolyte. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200309] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ryuji Watanabe
- Division of Advanced Integration Engineering, Graduate School of Regional Innovation StudiesMie University Tsu Mie Japan
| | - Masashi Noba
- Division of Chemistry for Materials, Graduate School of EngineeringMie University Tsu Mie Japan
| | - Takahiro Uno
- Division of Chemistry for Materials, Graduate School of EngineeringMie University Tsu Mie Japan
| | - Takahito Itoh
- Division of Chemistry for Materials, Graduate School of EngineeringMie University Tsu Mie Japan
| | - Masataka Kubo
- Division of Chemistry for Materials, Graduate School of EngineeringMie University Tsu Mie Japan
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18
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Ono R, Atarashi H, Yamazaki S, Kimura K. Molecular weight dependence of the growth rate of spherulite of cyclic poly(ε-caprolactone) polymerized by ring expansion reaction. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122403] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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19
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Xiang L, Ryu W, Kim J, Ree M. Cyclic topology effects on the morphology of biocompatible and environment-friendly poly(ε-caprolactone) under nanoscale film confinement. Polym Chem 2020. [DOI: 10.1039/d0py00665c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Quantitative grazing incidence X-ray scattering analysis combined with X-ray reflectivity using synchrotron radiation sources was explored for the first time cyclic topology effects on the nanoscale film morphology of poly(ε-caprolactone).
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Affiliation(s)
- Li Xiang
- Department of Chemistry
- Division of Advanced Materials Science
- and Polymer Research Institute
- Pohang University of Science and Technology
- Pohang 37673
| | - Wonyeong Ryu
- Department of Chemistry
- Division of Advanced Materials Science
- and Polymer Research Institute
- Pohang University of Science and Technology
- Pohang 37673
| | - Jehan Kim
- Pohang Accelerator Laboratory
- Pohang University of Science and Technology
- Pohang 37673
- Republic of Korea
| | - Moonhor Ree
- Department of Chemistry
- Division of Advanced Materials Science
- and Polymer Research Institute
- Pohang University of Science and Technology
- Pohang 37673
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20
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Kang G, Sun L, Liu Y, Meng C, Ma W, Wang B, Ma L, Yu C, Wei H. Micelles with Cyclic Poly(ε-caprolactone) Moieties: Greater Stability, Larger Drug Loading Capacity, and Slower Degradation Property for Controlled Drug Release. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:12509-12517. [PMID: 31487459 DOI: 10.1021/acs.langmuir.9b02346] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Polymer topology exerts a significant effect on its properties and performance for potential applications. Cyclic topology and its derived structures have been recently shown to outperform conventional linear analogues for drug delivery applications. However, an amphiphilic tadpole-shaped copolymer consisting of a cylic hydrophobic moiety has rarely been explored. For this purpose, a tadpole-shaped amphiphilic diblock copolymer of poly(ethylene oxide)-b-(cyclic poly(ε-caprolactone)) (mPEG-b-cPCL) was synthesized successfully via ring-opening polymerization (ROP) of ε-CL using a mPEG-based macroinitiator with both a hydroxyl and an azide termini and subsequent intrachain Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAc) click cyclization. A comparison study on the self-assembly behaviors, in vitro drug loading and drug release profiles, and degradation properties of the resulting mPEG-b-cPCL (C) with those of the linear counterpart (mPEG-b-PCL, L) revealed that mPEG-b-cPCL micelles are a better formulation than the micelles formed by the linear counterparts in terms of micelle stability, drug loading capacity, and the degradation property. Interestingly, compared to the single degradation of L, C exhibited a slower two-stage degradation process including the topological change from tadpole shape to linear conformation and the subsequent degradation of a linear polymer. This study therefore uncovered the topological effect of a hydrophobic moiety on the properties of the self-assembled micelles and developed a complementary alternative to enhance the micelle stability by introducing a cyclic hydrophobic segment.
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Affiliation(s)
- Guiying Kang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China
| | - Lu Sun
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China
| | - Yuping Liu
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China
| | - Chao Meng
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China
| | - Wei Ma
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China
| | - Baoyan Wang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China
| | - Liwei Ma
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China
| | - Cuiyun Yu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study and Department of Pharmacy and Pharmacology , University of South China , Hengyang 421001 , China
| | - Hua Wei
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study and Department of Pharmacy and Pharmacology , University of South China , Hengyang 421001 , China
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21
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Handa M, Biswas P. Orientational relaxation of ring polymers in dilute solutions. SOFT MATTER 2019; 15:5896-5907. [PMID: 31271404 DOI: 10.1039/c9sm00640k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The segmental relaxation dynamics of ring polymers in dilute solutions is investigated via optimized Rouse-Zimm theory. To the best of our knowledge, this is the first study that characterizes the orientational relaxation dynamics of ring polymers in dilute solutions. The orientational time autocorrelation functions are governed by two major processes that span a broad range of timescales: (i) local segmental motion at short times, independent of the ring size, and (ii) overall motion of the ring at long times that depends on the limiting ring size. Smaller rings relax faster than larger rings and their respective linear analogues. The hydrodynamic interactions decrease the higher relaxation rates corresponding to the local relaxation modes and increase the smaller relaxation rates which correspond to the collective relaxation modes. The spectral density is independent of frequency in the low frequency regime while it decreases with increasing frequency. Regardless of the ring size, the spin-lattice relaxation rate exhibits a single characteristic maximum as a function of frequency that shifts to a lower value with increasing strength of hydrodynamic interactions.
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Affiliation(s)
- Manisha Handa
- Department of Chemistry, University of Delhi, Delhi-110007, India.
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22
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Zhang C, Yang Z, Duong NT, Li X, Nishiyama Y, Wu Q, Zhang R, Sun P. Using Dynamic Bonds to Enhance the Mechanical Performance: From Microscopic Molecular Interactions to Macroscopic Properties. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00503] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Chi Zhang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education and College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Zhijun Yang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education and College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Nghia Tuan Duong
- RIKEN-JEOL Collaboration Center, RIKEN, Yokohama, Kanagawa 230-0045, Japan
| | - Xiaohui Li
- School of Materials Science and Engineering, and Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300072, P. R. China
| | - Yusuke Nishiyama
- RIKEN-JEOL Collaboration Center, RIKEN, Yokohama, Kanagawa 230-0045, Japan
- JEOL Resonance Inc., Musashino, Akishima, Tokyo 196-8558, Japan
- NMR Science and Development Division, RIKEN SPring-8 Center, Yokohama, Kanagawa 230-0045, Japan
| | - Qiang Wu
- Key Laboratory of Functional Polymer Materials of the Ministry of Education and College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Rongchun Zhang
- South China Advanced Institute for Soft Matter Science and Technology (AISMST), School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Pingchuan Sun
- Key Laboratory of Functional Polymer Materials of the Ministry of Education and College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin 300071, P. R. China
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23
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Hagita K, Fujiwara S, Iwaoka N. An accelerated united-atom molecular dynamics simulation on the fast crystallization of ring polyethylene melts. J Chem Phys 2019; 150:074901. [PMID: 30795675 DOI: 10.1063/1.5080332] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
To investigate crystallinities based on trans-structures, we determined the differences in the crystallization properties of ring and linear polymers by performing united-atom-model molecular dynamics (MD) simulations of homogeneous polyethylene melts of equal length, N, which refers to the number of monomers per chain. Modified parameters based on the DREIDING force field for the CH2 units were used in order to accelerate the crystallization process. To detect polymer crystallization, we introduced some local-order parameters that relate to trans-segments in addition to common crystallinities using neighboring bond orders. Through quenching MD simulations at 5 K/ns, we roughly determined temperature thresholds, Tth, at which crystallization is observed although it was hard to determine the precise Tth as observed in the laboratory time frame with the present computing resources. When N was relatively small (100 and 200), Tth was determined to be 320 and 350 K for the linear- and ring-polyethylene melts, respectively, while Tth was found to be 330 and 350 K, respectively, when N was 1000. Having confirmed that the crystallization of a ring-polyethylene melt occurs faster than that of the analogous linear melt, we conclude that the trans-segment-based crystallinities are effective for the analysis of local crystal behavior.
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Affiliation(s)
- Katsumi Hagita
- Department of Applied Physics, National Defense Academy, Yokosuka 239-8686, Japan
| | - Susumu Fujiwara
- Faculty of Materials Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Nobuyuki Iwaoka
- Tsuruoka College, National Institute of Technology, Tsuruoka 997-8511, Japan
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24
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Mato Y, Honda K, Tajima K, Yamamoto T, Isono T, Satoh T. A versatile synthetic strategy for macromolecular cages: intramolecular consecutive cyclization of star-shaped polymers. Chem Sci 2019; 10:440-446. [PMID: 30746091 PMCID: PMC6335864 DOI: 10.1039/c8sc04006k] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 10/10/2018] [Indexed: 11/21/2022] Open
Abstract
Cage-shaped polymers, or "macromolecular cages", are of great interest as the macromolecular analogues of molecular cages because of their various potential applications in supramolecular chemistry and materials science. However, the systematic synthesis of macromolecular cages remains a great challenge. Herein, we describe a robust and versatile synthetic strategy for macromolecular cages with defined arm numbers and sizes based on the intramolecular consecutive cyclization of highly reactive norbornene groups attached to each end of the arms of a star-shaped polymer precursor. The cyclizations of three-, four-, six-, and eight-armed star-shaped poly(ε-caprolactone)s (PCLs) bearing a norbornenyl group at each arm terminus were effected with Grubbs' third generation catalyst at high dilution. 1H NMR, SEC, and MALDI-TOF MS analyses revealed that the reaction proceeded to produce the desired macromolecular cages with sufficient purity. The molecular sizes of the macromolecular cages were controlled by simply changing the molecular weight of the star-shaped polymer precursors. Systematic investigation of the structure-property relationships confirmed that the macromolecular cages adopt a much more compact conformation, in both the solution and bulk states, as compared to their linear and star-shaped counterparts. This synthetic approach marks a significant advance in the synthesis of complex macromolecular architectures and provides a platform for novel applications using cage-shaped molecules with polymer frameworks.
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Affiliation(s)
- Yoshinobu Mato
- Graduate School of Chemical Sciences and Engineering , Hokkaido University , Sapporo 060-8628 , Japan
| | - Kohei Honda
- Graduate School of Chemical Sciences and Engineering , Hokkaido University , Sapporo 060-8628 , Japan
| | - Kenji Tajima
- Division of Applied Chemistry , Faculty of Engineering , Hokkaido University , Sapporo 060-8628 , Japan . ;
| | - Takuya Yamamoto
- Division of Applied Chemistry , Faculty of Engineering , Hokkaido University , Sapporo 060-8628 , Japan . ;
| | - Takuya Isono
- Division of Applied Chemistry , Faculty of Engineering , Hokkaido University , Sapporo 060-8628 , Japan . ;
| | - Toshifumi Satoh
- Division of Applied Chemistry , Faculty of Engineering , Hokkaido University , Sapporo 060-8628 , Japan . ;
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25
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Chen J, Li H, Zhang H, Liao X, Han H, Zhang L, Sun R, Xie M. Blocking-cyclization technique for precise synthesis of cyclic polymers with regulated topology. Nat Commun 2018; 9:5310. [PMID: 30552323 PMCID: PMC6294010 DOI: 10.1038/s41467-018-07754-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Accepted: 11/23/2018] [Indexed: 11/13/2022] Open
Abstract
Ring-closure and ring-expansion techniques are the two routes for extensive synthesis of cyclic polymers. Here, we report an alternative blocking-cyclization technique referred to as the third route to prepare cyclic polymers with regulated ring size and ring number by ring-opening metathesis polymerization of di- and monofunctional monomers in a one-pot process, where the polymer intermediates bearing two single-stranded blocks are efficiently cyclized by the cyclizing unit of propagated ladderphane to generate corresponding mono-, bis-, and tricyclic polymers, and the well-defined ladderphane structure plays a crucial role in forming the cyclic topology. Monocyclic polymer is further modified via Alder-ene reaction and the cyclic molecular topology is clearly demonstrated. The diversity features of cyclic polymers are comprehensively revealed. This strategy has broken through the limitations of previous two cyclizing routes, and indeed opens a facile and popular way to various cyclic polymers by commercial Grubbs catalyst and conventional metathesis polymerization.
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Affiliation(s)
- Jie Chen
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China
| | - Hongfei Li
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China
| | - Hengchen Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China
| | - Xiaojuan Liao
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China
| | - Huijing Han
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China
| | - Lidong Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China
| | - Ruyi Sun
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China.
| | - Meiran Xie
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China.
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26
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Kurz R, Schulz M, Scheliga F, Men Y, Seidlitz A, Thurn-Albrecht T, Saalwächter K. Interplay between Crystallization and Entanglements in the Amorphous Phase of the Crystal-Fixed Polymer Poly(ϵ-caprolactone). Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00809] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Ricardo Kurz
- Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06099 Halle (Saale), Germany
| | - Martha Schulz
- Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06099 Halle (Saale), Germany
| | - Felix Scheliga
- Institut für Technische und Makromolekulare Chemie, Universität Hamburg, Bundesstr. 45, 20146 Hamburg, Germany
| | - Yongfeng Men
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, 130022 Changchun, P. R. China
| | - Anne Seidlitz
- Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06099 Halle (Saale), Germany
| | - Thomas Thurn-Albrecht
- Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06099 Halle (Saale), Germany
| | - Kay Saalwächter
- Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06099 Halle (Saale), Germany
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27
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Wang S, Hong YL, Yuan S, Chen W, Zhou W, Li Z, Wang K, Min X, Konishi T, Miyoshi T. Chain Trajectory, Chain Packing, and Molecular Dynamics of Semicrystalline Polymers as Studied by Solid-State NMR. Polymers (Basel) 2018; 10:E775. [PMID: 30960700 PMCID: PMC6403921 DOI: 10.3390/polym10070775] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Revised: 07/13/2018] [Accepted: 07/13/2018] [Indexed: 01/05/2023] Open
Abstract
Chain-level structure of semicrystalline polymers in melt- and solution-grown crystals has been debated over the past half century. Recently, 13C⁻13C double quantum (DQ) Nuclear Magnetic Resonance (NMR) spectroscopy has been successfully applied to investigate chain-folding (CF) structure and packing structure of 13C enriched polymers after solution and melt crystallization. We review recent NMR studies for (i) packing structure, (ii) chain trajectory, (iii) conformation of the folded chains, (iv) nucleation mechanisms, (v) deformation mechanism, and (vi) molecular dynamics of semicrystalline polymers.
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Affiliation(s)
- Shijun Wang
- Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA.
| | - You-Lee Hong
- Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA.
- RIKEN CLST-JEOL Collaboration Center, RIKEN, Yokohama, Kanagawa 230-0045, Japan.
| | - Shichen Yuan
- Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA.
| | - Wei Chen
- Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA.
- State Key Lab of Pollution Control and Resource Reuse Study, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
| | - Wenxuan Zhou
- Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA.
| | - Zhen Li
- Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA.
| | - Kun Wang
- Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA.
| | - Xu Min
- School of Physics and Materials Science & Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai 200062, China.
| | - Takashi Konishi
- Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA.
- Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan.
| | - Toshikazu Miyoshi
- Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA.
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28
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Iyer K, Muthukumar M. Langevin dynamics simulation of crystallization of ring polymers. J Chem Phys 2018; 148:244904. [DOI: 10.1063/1.5023602] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Affiliation(s)
- Kiran Iyer
- Department of Chemical Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA
| | - Murugappan Muthukumar
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA
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29
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Xiang L, Ryu W, Kim H, Ree M. Precise Synthesis, Properties, and Structures of Cyclic Poly(ε-caprolactone)s. Polymers (Basel) 2018; 10:E577. [PMID: 30966611 PMCID: PMC6403704 DOI: 10.3390/polym10060577] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 05/18/2018] [Accepted: 05/22/2018] [Indexed: 11/25/2022] Open
Abstract
Cyclic PCL (c-PCL) has drawn great attention from academia and industry because of its unique, unusual structure and property characteristics due to the absence of end groups in addition to the biocompatibility and biodegradability of its linear analogue. As a result of much research effort, several synthetic methods have been developed to produce c-PCLs so far. Their chain, morphology and property characteristics were investigated even though carried out on a very limited basis. This feature article reviews the research progress made in the synthesis, morphology, and properties of c-PCL; all results and their pros and cons are discussed in terms of purity and molecular weight distribution in addition to the cyclic topology effect. In addition, we attempted to synthesize a series of c-PCL products of high purity by using intramolecular azido-alkynyl click cyclization chemistry and subsequent precise and controlled separation and purification; and their thermal degradation and phase transitions were investigated in terms of the cyclic topology effect.
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Affiliation(s)
- Li Xiang
- Department of Chemistry, Division of Advanced Materials Science, and Polymer Research Institute, Pohang University of Science and Technology, Pohang 37673, Korea.
| | - Wonyeong Ryu
- Department of Chemistry, Division of Advanced Materials Science, and Polymer Research Institute, Pohang University of Science and Technology, Pohang 37673, Korea.
| | - Heesoo Kim
- Department of Microbiology and Dongguk Medical Institute, Dongguk University College of Medicine, Gyeongju 38066, Korea.
| | - Moonhor Ree
- Department of Chemistry, Division of Advanced Materials Science, and Polymer Research Institute, Pohang University of Science and Technology, Pohang 37673, Korea.
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30
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Zaldua N, Liénard R, Josse T, Zubitur M, Mugica A, Iturrospe A, Arbe A, De Winter J, Coulembier O, Müller AJ. Influence of Chain Topology (Cyclic versus Linear) on the Nucleation and Isothermal Crystallization of Poly(l-lactide) and Poly(d-lactide). Macromolecules 2018. [DOI: 10.1021/acs.macromol.7b02638] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
| | | | | | | | | | - Amaia Iturrospe
- Materials Physics Center (MPC), Centro de Física de Materiales (CFM) (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastián, Spain
| | - Arantxa Arbe
- Materials Physics Center (MPC), Centro de Física de Materiales (CFM) (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastián, Spain
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31
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Sangroniz L, Barbieri F, Cavallo D, Santamaria A, Alamo R, Müller A. Rheology of self-nucleated poly(ɛ-caprolactone) melts. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.01.009] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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32
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Wang B, Pan L, Ma Z, Li Y. Ring-Opening Polymerization with Lewis Pairs and Subsequent Nucleophilic Substitution: A Promising Strategy to Well-Defined Polyethylene-like Polyesters without Transesterification. Macromolecules 2018. [DOI: 10.1021/acs.macromol.7b02378] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Bin Wang
- Tianjin Key Laboratory of Composite & Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Li Pan
- Tianjin Key Laboratory of Composite & Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Zhe Ma
- Tianjin Key Laboratory of Composite & Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Yuesheng Li
- Tianjin Key Laboratory of Composite & Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
- Collaborative
Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300350, China
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33
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Flieger AK, Schulz M, Thurn-Albrecht T. Interface-Induced Crystallization of Polycaprolactone on Graphite via First-Order Prewetting of the Crystalline Phase. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b02113] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Ann-Kristin Flieger
- Experimental Polymer Physics, Institute of Physics, Martin Luther University Halle-Wittenberg, Halle 06120, Germany
| | - Martha Schulz
- Experimental Polymer Physics, Institute of Physics, Martin Luther University Halle-Wittenberg, Halle 06120, Germany
| | - Thomas Thurn-Albrecht
- Experimental Polymer Physics, Institute of Physics, Martin Luther University Halle-Wittenberg, Halle 06120, Germany
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34
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Kelly GM, Haque FM, Grayson SM, Albert JNL. Suppression of Melt-Induced Dewetting in Cyclic Poly(ε-caprolactone) Thin Films. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b02200] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Giovanni M. Kelly
- Department
of Chemical and Biomolecular Engineering and ‡Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
| | - Farihah M. Haque
- Department
of Chemical and Biomolecular Engineering and ‡Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
| | - Scott M. Grayson
- Department
of Chemical and Biomolecular Engineering and ‡Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
| | - Julie N. L. Albert
- Department
of Chemical and Biomolecular Engineering and ‡Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
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35
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Xiao H, Luo C, Yan D, Sommer JU. Molecular Dynamics Simulation of Crystallization Cyclic Polymer Melts As Compared to Their Linear Counterparts. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01570] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Hongyi Xiao
- Department
of Physics, Beijing Normal University, 100875 Beijing, China
- Institute
Theory of Polymers, Leibniz-Institute of Polymer Research Dresden, 01069 Dresden, Germany
| | - Chuanfu Luo
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun, China
| | - Dadong Yan
- Department
of Physics, Beijing Normal University, 100875 Beijing, China
| | - Jens-Uwe Sommer
- Institute
Theory of Polymers, Leibniz-Institute of Polymer Research Dresden, 01069 Dresden, Germany
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36
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Honda S, Adachi K, Yamamoto T, Tezuka Y. A Twisting Ring Polymer: Synthesis and Thermally Induced Chiroptical Responses of a Cyclic Poly(tetrahydrofuran) Having Axially Chiral Units. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00839] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Satoshi Honda
- Department
of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan
| | - Kaoru Adachi
- Department
of Chemistry and Materials Technology, Kyoto Institute of Technology, Matsugasaki,
Sakyo-ku, Kyoto 606-8585, Japan
| | - Takuya Yamamoto
- Division
of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Yasuyuki Tezuka
- Department
of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
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37
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Fritzsching KJ, Mao K, Schmidt-Rohr K. Avoidance of Density Anomalies as a Structural Principle for Semicrystalline Polymers: The Importance of Chain Ends and Chain Tilt. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02000] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Keith J. Fritzsching
- Department of Chemistry, Brandeis University, 415 South St., Waltham, Massachusetts 02453, United States
| | - Kanmi Mao
- ExxonMobil Research and Engineering, 1545 Route 22 East, Annandale, New Jersey 08801, United States
| | - Klaus Schmidt-Rohr
- Department of Chemistry, Brandeis University, 415 South St., Waltham, Massachusetts 02453, United States
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38
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Chang YA, Rudenko AE, Waymouth RM. Zwitterionic Ring-Opening Polymerization of N-Substituted Eight-Membered Cyclic Carbonates to Generate Cyclic Poly(carbonate)s. ACS Macro Lett 2016; 5:1162-1166. [PMID: 35658177 DOI: 10.1021/acsmacrolett.6b00591] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The zwitterionic ring-opening polymerization of N-functionalized eight-membered cyclic carbonates with N-heterocyclic carbenes (NHC) in the absence of alcohol initiators generates cyclic polycarbonates of Mn ∼ 30-100 kDa. The polymerization behavior of these eight-membered cyclic azacarbonates depends sensitively on the nature of the nitrogen substituent. The N-benzyl-substituted eight-membered cyclic carbonate (8CCBn) polymerizes readily with 1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene to generate cyclic polycarbonates with molecular weights of Mn = 14 000 to 96 000 Da. In contrast, the N-phenyl-substituted cyclic carbonate (8CCPh) catalytically dimerizes in the presence of the NHC to afford the crystalline cyclic dimer. The zwitterionic ring-opening copolymerization of δ-valerolactone (VL) and the cyclic carbonates afford gradient cyclic copolymers. The cyclic topology of both the homopolymers and copolymers was supported by MALDI-TOF MS and intrinsic viscosity measurements. 13C NMR and differential scanning calorimetry of the cyclic copolymers are indicative of a gradient sequence distribution as a consequence of the more rapid enchainment of the cyclic carbonates relative to valerolactone.
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Affiliation(s)
- Young A. Chang
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
| | - Andrey E. Rudenko
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
| | - Robert M. Waymouth
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
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39
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Zardalidis G, Mars J, Allgaier J, Mezger M, Richter D, Floudas G. Influence of chain topology on polymer crystallization: poly(ethylene oxide) (PEO) rings vs. linear chains. SOFT MATTER 2016; 12:8124-8134. [PMID: 27714349 DOI: 10.1039/c6sm01622g] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The absence of entanglements, the more compact structure and the faster diffusion in melts of cyclic poly(ethylene oxide) (PEO) chains have consequences on their crystallization behavior at the lamellar and spherulitic length scales. Rings with molecular weight below the entanglement molecular weight (M < Me), attain the equilibrium configuration composed from twice-folded chains with a lamellar periodicity that is half of the corresponding linear chains. Rings with M > Me undergo distinct step-like conformational changes to a crystalline lamellar with the equilibrium configuration. Rings melt from this configuration in the absence of crystal thickening in sharp contrast to linear chains. In general, rings more easily attain their extended equilibrium configuration due to strained segments and the absence of entanglements. In addition, rings have a higher equilibrium melting temperature. At the level of the spherulitic superstructure, growth rates are much faster for rings reflecting the faster diffusion and more compact structure. With respect to the segmental dynamics in their semi-crystalline state, ring PEOs with a steepness index of ∼34 form some of the "strongest" glasses.
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Affiliation(s)
- George Zardalidis
- Department of Physics, University of Ioannina, P.O. Box 1186, 451 10 Ioannina, Greece.
| | - Julian Mars
- Institute of Physics, Johannes Gutenberg University Mainz and Max Planck Institute for Polymer Research, 55128 Mainz, Germany
| | - Jürgen Allgaier
- Jülich Centre for Neutron Science and Institute for Complex Systems, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Markus Mezger
- Institute of Physics, Johannes Gutenberg University Mainz and Max Planck Institute for Polymer Research, 55128 Mainz, Germany
| | - Dieter Richter
- Jülich Centre for Neutron Science and Institute for Complex Systems, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - George Floudas
- Department of Physics, University of Ioannina, P.O. Box 1186, 451 10 Ioannina, Greece.
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40
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41
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Pellicane G, Megnidio-Tchoukouegno M, Mola GT, Tsige M. Surface enrichment driven by polymer topology. Phys Rev E 2016; 93:050501. [PMID: 27300817 DOI: 10.1103/physreve.93.050501] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Indexed: 11/07/2022]
Abstract
We report a molecular dynamics simulation study of free-standing films of a blend of linear and cyclic polymer chains. We find that the composition of linear chains at the interface is enhanced relative to their bulk value for short chains but is depleted for long chains. Our findings are in agreement with recent experimental evidence reported for blends of short linear and cyclic polystyrene chains and highlight the genuine surface behavior in the short chain-length regime where theoretical predictions are more difficult. We highlight surface enrichment at low-energy surfaces as the result of competition between different entropic and enthalpic contributions to the interfacial free energy of the system.
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Affiliation(s)
- Giuseppe Pellicane
- School of Chemistry and Physics, University of Kwazulu-Natal, Private Bag X01, Scottsville 3209, Pietermaritzburg, South Africa.,National Institute for Theoretical Physics (NITheP), KZN node, Pietermaritzburg, South Africa
| | - Mireille Megnidio-Tchoukouegno
- School of Chemistry and Physics, University of Kwazulu-Natal, Private Bag X01, Scottsville 3209, Pietermaritzburg, South Africa
| | - Genene T Mola
- School of Chemistry and Physics, University of Kwazulu-Natal, Private Bag X01, Scottsville 3209, Pietermaritzburg, South Africa
| | - Mesfin Tsige
- Department of Polymer Science, University of Akron, Akron, Ohio 44325, USA
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42
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Non-monotonic molecular weight dependence of crystallization rates of linear and cyclic poly(epsilon-caprolactone)s in a wide temperature range. POLYM INT 2016. [DOI: 10.1002/pi.5157] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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43
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Kammiyada H, Ouchi M, Sawamoto M. A convergent approach to ring polymers with narrow molecular weight distributions through post dilution in ring expansion cationic polymerization. Polym Chem 2016. [DOI: 10.1039/c6py01683a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
In this paper, we demonstrate a convergent approach to convert “fused” ring chains obtained via ring expansion cationic polymerization of vinyl ether with a hemiacetal ester (HAE)-based ring initiator (1) into “sing” ring ones of narrow MWDs.
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Affiliation(s)
- Hajime Kammiyada
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| | - Makoto Ouchi
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| | - Mitsuo Sawamoto
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
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44
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López JV, Pérez-Camargo RA, Zhang B, Grayson SM, Müller AJ. The influence of small amounts of linear polycaprolactone chains on the crystallization of cyclic analogue molecules. RSC Adv 2016. [DOI: 10.1039/c6ra04823d] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
C-PCL/L-PCL blends show a synergistic decrease in their isothermal crystallization rates as compared to the expectation of a simple mixing law due to the threading effect of the linear on the cyclic chains.
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Affiliation(s)
- Juan V. López
- Grupo de Polímeros USB
- Departamento de Ciencia de los Materiales
- Universidad Simón Bolívar
- Caracas 1080-A
- Venezuela
| | - Ricardo A. Pérez-Camargo
- Grupo de Polímeros USB
- Departamento de Ciencia de los Materiales
- Universidad Simón Bolívar
- Caracas 1080-A
- Venezuela
| | - Boyu Zhang
- Department of Chemistry
- Tulane University
- New Orleans
- USA
| | | | - Alejandro J. Müller
- Grupo de Polímeros USB
- Departamento de Ciencia de los Materiales
- Universidad Simón Bolívar
- Caracas 1080-A
- Venezuela
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45
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Chen W, Zhou Y, Li Y, Sun J, Pan X, Yu Q, Zhou N, Zhang Z, Zhu X. Shape-memory and self-healing polyurethanes based on cyclic poly(ε-caprolactone). Polym Chem 2016. [DOI: 10.1039/c6py01638c] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work provides an unprecedented example for the exploration of the cyclic topology effects on the shape memory performance of bulk polyurethane materials, providing a novel angle to elucidate the structure–property relationship of polymeric materials.
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Affiliation(s)
- Wei Chen
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
| | - Yanyan Zhou
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
| | - Ying Li
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
| | - Jun Sun
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
| | - Xiangqiang Pan
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
| | - Qian Yu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
| | - Nianchen Zhou
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
| | - Zhengbiao Zhang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
| | - Xiulin Zhu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
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46
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Cao PF, Mangadlao JD, de Leon A, Su Z, Advincula RC. Catenated Poly(ε-caprolactone) and Poly(l-lactide) via Ring-Expansion Strategy. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00470] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Peng-Fei Cao
- Department of Macromolecular
Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Joey Dacula Mangadlao
- Department of Macromolecular
Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Al de Leon
- Department of Macromolecular
Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Zhe Su
- Department of Macromolecular
Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Rigoberto C. Advincula
- Department of Macromolecular
Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
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47
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Wang J, Li Z, Pérez RA, Müller AJ, Zhang B, Grayson SM, Hu W. Comparing crystallization rates between linear and cyclic poly(epsilon-caprolactones) via fast-scan chip-calorimeter measurements. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.02.039] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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48
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49
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Carlotti M, Gullo G, Battisti A, Martini F, Borsacchi S, Geppi M, Ruggeri G, Pucci A. Thermochromic polyethylene films doped with perylene chromophores: experimental evidence and methods for characterization of their phase behaviour. Polym Chem 2015. [DOI: 10.1039/c5py00486a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
LLDPE films doped with aggregachromic PE-Pery fluorophores were proposed as a thermochromic system in the 30–70 °C regime.
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Affiliation(s)
- Marco Carlotti
- Stratingh Institute for Chemistry and Zernike Institute for Advanced Materials
- University of Groningen
- 9747 AG Groningen
- The Netherlands
| | - Giuseppa Gullo
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- 56124 Pisa
- Italy
| | - Antonella Battisti
- Istituto di Biofisica – CNR and NEST – Scuola Normale Superiore
- Pisa
- Italy
| | - Francesca Martini
- Istituto di Chimica dei Composti Organometallici del CNR
- 56124 Pisa
- Italy
- INSTM
- Unità di Ricerca di Pisa
| | - Silvia Borsacchi
- Istituto di Chimica dei Composti Organometallici del CNR
- 56124 Pisa
- Italy
- INSTM
- Unità di Ricerca di Pisa
| | - Marco Geppi
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- 56124 Pisa
- Italy
- Istituto di Chimica dei Composti Organometallici del CNR
| | - Giacomo Ruggeri
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- 56124 Pisa
- Italy
- INSTM
| | - Andrea Pucci
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- 56124 Pisa
- Italy
- INSTM
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50
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Malmierca MA, González-Jiménez A, Mora-Barrantes I, Posadas P, Rodríguez A, Ibarra L, Nogales A, Saalwächter K, Valentín JL. Characterization of Network Structure and Chain Dynamics of Elastomeric Ionomers by Means of 1H Low-Field NMR. Macromolecules 2014. [DOI: 10.1021/ma501208g] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- M. A. Malmierca
- Instituto de Ciencia
y Tecnología de Polímeros (CSIC), C/Juan de la Cierva, 3, 28006 Madrid, Spain
| | - A. González-Jiménez
- Instituto de Ciencia
y Tecnología de Polímeros (CSIC), C/Juan de la Cierva, 3, 28006 Madrid, Spain
| | - I. Mora-Barrantes
- Instituto de Ciencia
y Tecnología de Polímeros (CSIC), C/Juan de la Cierva, 3, 28006 Madrid, Spain
| | - P. Posadas
- Instituto de Ciencia
y Tecnología de Polímeros (CSIC), C/Juan de la Cierva, 3, 28006 Madrid, Spain
| | - A. Rodríguez
- Instituto de Ciencia
y Tecnología de Polímeros (CSIC), C/Juan de la Cierva, 3, 28006 Madrid, Spain
| | - L. Ibarra
- Instituto de Ciencia
y Tecnología de Polímeros (CSIC), C/Juan de la Cierva, 3, 28006 Madrid, Spain
| | - A. Nogales
- Instituto de Estructura
de la Materia, IEM-CSIC, C/Serrano
121, 28006 Madrid, Spain
| | - K. Saalwächter
- Institut
für Physik − NMR, Martin-Luther-Universität Halle-Wittenberg, Betty-Heimann-Strasse
7, D-06120 Halle, Germany
| | - J. L. Valentín
- Instituto de Ciencia
y Tecnología de Polímeros (CSIC), C/Juan de la Cierva, 3, 28006 Madrid, Spain
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