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Niu Z, Wang Y, Wang X, Yin D, Shou T, Cao P, Zhao X, Hu S, Zhang L. Investigating the Effect of Chain Extender on the Phase Separation and Mechanical Properties of Polybutadiene-Based Polyurethane. Macromol Rapid Commun 2024:e2400259. [PMID: 39122477 DOI: 10.1002/marc.202400259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Revised: 06/18/2024] [Indexed: 08/12/2024]
Abstract
The thermodynamic incompatibility between the soft and hard segments of thermoplastic polyurethane (TPU) results in a microphase-separated behavior and excellent mechanical properties. However, the effect of the chain extender on the degree of microphase separation (DMS) and the resultant mechanical properties of TPU have not been well studied because of the complex interactions between the soft and hard segments. Herein, hydroxyl-terminated polybutadiene-based TPUs(HTPB-TPUs) without hydrogen bonding between the soft and hard segments are synthesized using hydroxyl-terminated polybutadiene, toluene diisocyanate, and four different chain extenders, and the effect of the chain extender structure on DMS is analyzed experimentally using a combination of analytical techniques. Furthermore, the solubility parameters of the soft and hard segments, glass transition temperatures, and hydrogen-bond density of the HTPB-TPUs, are computed using all-atom molecular dynamics simulations. The results clearly reveal that the chain extender significantly affects the DMS and thus the mechanical properties of HTPB-TPUs. This study paves the way for studying the relationship between the structure and properties of TPU.
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Affiliation(s)
- Zhihao Niu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Yimin Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Xin Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Dexian Yin
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Tao Shou
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Pengfei Cao
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing, 10029, China
| | - Xiuying Zhao
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing, 10029, China
- Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Shikai Hu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing, 10029, China
- Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Liqun Zhang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing, 10029, China
- Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, Beijing, 100029, China
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2
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Zhao W, Sun X, Ou Z, Li Z, Liu Z, Qin X. Modifying Effect and Mechanism of Polymer Powder on the Properties of Asphalt Binder for Engineering Application. Polymers (Basel) 2023; 15:4659. [PMID: 38139911 PMCID: PMC10747318 DOI: 10.3390/polym15244659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 11/24/2023] [Accepted: 12/05/2023] [Indexed: 12/24/2023] Open
Abstract
For achieving the better modifying effect of polyurethane on asphalt pavement materials, the PUA powder modifier was prepared with fine grinding at the glass transition temperature, and polyurethane-modified asphalt (PUA-MA) with different dosages of modifier was prepared. The impact of the PUA on the physical properties of asphalt binder was studied. The modifying mechanism of PUA on asphalt was explored by investigating the thermal performance and chemical composition of asphalt (thermogravimetric analysis, differential scanning calorimetry test, and Fourier transform infrared spectroscopy). The micrograph of the interactive interface was characterized by scanning an electron microscope. Furthermore, the rheological properties of PUA-MA were also investigated and analyzed. The results indicated that the PUA had a dense structure with few pores on the surface. After mixing with asphalt, it altered the asphalt's internal structure via physical fusion and chemical reaction (carbamate formation). PUA improved the thermal stability of asphalt, enhanced the asphalt's thermal decomposition temperature, and further reduced the thermal mass loss while decreasing the glass transition temperature. The addition and dosage increase in the PUA modifier significantly improved the softening point, viscosity, complex shear modulus, and rutting factor of asphalt. Also, the PUA could improve the elastic recovery ability of asphalt and enhance the rutting resistance of asphalt at high temperatures. However, the crack resistance at low temperatures was not effectively improved (ductility and penetration decreased). When the dosage was 6-9%, PUA-MA had the best high-temperature performance, but asphalt showed poor low-temperature performance at this dosage. This study provides a theoretical reference for popularizing and applying polyurethane as an asphalt modifier in road engineering.
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Affiliation(s)
- Wensheng Zhao
- National Engineering Research Center of Highway Maintenance Technology, Changsha University of Science & Technology, Changsha 410114, China; (W.Z.); (X.S.)
- School of Traffic & Transportation Engineering, Changsha University of Science & Technology, Changsha 410114, China
| | - Xiaolong Sun
- National Engineering Research Center of Highway Maintenance Technology, Changsha University of Science & Technology, Changsha 410114, China; (W.Z.); (X.S.)
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China; (Z.O.); (Z.L.)
| | - Zhixin Ou
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China; (Z.O.); (Z.L.)
| | - Zhijian Li
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China; (Z.O.); (Z.L.)
| | - Zhisheng Liu
- Key Laboratory of Road and Traffic Engineering, Ministry of Education, Tongji University, Shanghai 201804, China;
| | - Xiao Qin
- School of Transportation and Civil Engineering and Architecture, Foshan University, Foshan 528000, China
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Guo S, Zhu Y, Mei Q, Wang G. Preparation of bio‐degradable polyurethane based on poly(1,3‐propylene 3,6,9‐trioxaundecanedioate) glycol. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shengtong Guo
- Shanghai Key Laboratory of Advanced Polymeric Materials School of Materials Science and Engineering, East China University of Science and Technology Shanghai China
| | - Yun Zhu
- Shanghai Key Laboratory of Advanced Polymeric Materials School of Materials Science and Engineering, East China University of Science and Technology Shanghai China
| | - Qiyong Mei
- Department of Neurosurgery Changzheng Hospital, Naval Medical University (Second Military Medical University) Shanghai China
| | - Guiyou Wang
- Shanghai Key Laboratory of Advanced Polymeric Materials School of Materials Science and Engineering, East China University of Science and Technology Shanghai China
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Jin X, Wang F, Yang Y, Guo N, Zhang H, Liu H. Evaluation and mechanism of interaction effect between thermoplastic polyurethane elastomer modified asphalt and fillers. J Appl Polym Sci 2022. [DOI: 10.1002/app.52979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xin Jin
- School of Transportation Engineering Shenyang Jianzhu University Shenyang China
| | - Fengchi Wang
- School of Transportation Engineering Shenyang Jianzhu University Shenyang China
| | - Yanhai Yang
- School of Transportation Engineering Shenyang Jianzhu University Shenyang China
| | - Naisheng Guo
- College of Transportation Engineering Dalian Maritime University Dalian China
| | - Huaizhi Zhang
- School of Transportation Engineering Shenyang Jianzhu University Shenyang China
| | - He Liu
- School of Transportation Engineering Shenyang Jianzhu University Shenyang China
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5
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Research on Micro-Mechanics Modelling of TPU-Modified Asphalt Mastic. COATINGS 2022. [DOI: 10.3390/coatings12071029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
To explore the interactions and mechanisms of Thermoplastic polyurethane (TPU)-modified asphalt with different kinds of mineral fillers, a micro-mechanical model for TPU-modified asphalt mastic was established, which considered the interaction between asphalt and mineral powder to effectively analyze the internal mechanisms affecting the rheological properties of TPU-modified asphalt mastic. In this study, according to the micro-mechanics of composites’ principles, the dynamic shear modulus (|G*|) of asphalt mastic with different mass ratios of filler/asphalt (F/A) was calculated by the homogenize morphologically representative pattern (H-MRP) model. The key ratio of F/A, which is close to the test result, can be determined, and a four-phase H-MRP model of the TPU modified asphalt mastic was established after considering the structure of asphalt layer thickness. The results were interpreted based on the known reactions of TPU with asphalt model compounds. The |G*| of TPU-modified asphalt mastic was predicted by using this model. Furthermore, the effects of the complex shear modulus, Poisson’s ratio of TPU-modified asphalt, Poisson’s ratio, particle size of mineral powder, and thickness of the structural asphalt layer in the |G*| of TPU-modified asphalt mastic were analyzed in the whole-model construction, as well as the internal mechanism of the |G*| of TPU modified asphalt mastic. In addition, can also be found the predicted value of |G*| calculated by the four-phase H-MRP model is close to the experimental value after choosing a structural asphalt layer of appropriate thickness.
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Anokhin DV, Gorbunova MA, Abukaev AF, Ivanov DA. Multiblock Thermoplastic Polyurethanes: In Situ Studies of Structural and Morphological Evolution under Strain. MATERIALS 2021; 14:ma14113009. [PMID: 34206146 PMCID: PMC8199508 DOI: 10.3390/ma14113009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 05/28/2021] [Accepted: 05/29/2021] [Indexed: 11/16/2022]
Abstract
The structural evolution of multiblock thermoplastic polyurethane ureas based on two polydiols, poly(1,4-butylene adipate (PBA) and poly-ε-caprolactone (PCL), as soft blocks and two diisocyanites, 2,4-toluylene diisocyanate (TDI) and 1,6-hexamethylene diisocyanate (HMDI), as hard blocks is monitored during in situ deformation by small- and wide-angle X-ray scattering. It was shown that the urethane environment determines the crystal structure of the soft block. Consequently, two populations of crystalline domains of polydiols are formed. Aromatic TDI forms rigid domains and imposes constrains on the crystallization of bounded polydiol. During stretching, the TDI–polydiol domains reveal limited elastic deformation without reorganization of the crystalline phase. The constrained lamellae of polydiol form an additional physical network that contributes to the elastic modulus and strength of the material. In contrast, polydiols connected to the linear semi-flexible HMDI have a higher crystallization rate and exhibit a more regular lamellar morphology. During deformation, the HMDI-PBA domains show a typical thermoplastic behavior with plastic flow and necking because of the high degree of crystallinity of PBA at room temperature. Materials with HMDI-PCL bonding exhibit elastic deformation due to the low degree of crystallinity of the PCL block in the isotropic state. At higher strain, hardening of the material is observed due to the stress-induced crystallization of PCL.
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Affiliation(s)
- Denis V. Anokhin
- Institute for Problems of Chemical Physics Russian Academy of Sciences, Semenov Prospect 1, 142432 Chernogolovka, Russia; (M.A.G.); (A.F.A.); (D.A.I.)
- Faculty of Fundamental Physical and Chemical Engineering, Lomonosov Moscow State University, 1 Leninskie Gory, 119991 Moscow, Russia
- Correspondence: ; Tel.: +7-905-509-35-21
| | - Marina A. Gorbunova
- Institute for Problems of Chemical Physics Russian Academy of Sciences, Semenov Prospect 1, 142432 Chernogolovka, Russia; (M.A.G.); (A.F.A.); (D.A.I.)
| | - Ainur F. Abukaev
- Institute for Problems of Chemical Physics Russian Academy of Sciences, Semenov Prospect 1, 142432 Chernogolovka, Russia; (M.A.G.); (A.F.A.); (D.A.I.)
- Moscow Institute of Physics and Technology, Institutskiy per. 9, 141700 Dolgoprudny, Russia
| | - Dimitri A. Ivanov
- Institute for Problems of Chemical Physics Russian Academy of Sciences, Semenov Prospect 1, 142432 Chernogolovka, Russia; (M.A.G.); (A.F.A.); (D.A.I.)
- Faculty of Fundamental Physical and Chemical Engineering, Lomonosov Moscow State University, 1 Leninskie Gory, 119991 Moscow, Russia
- Institut de Sciences des Matériaux de Mulhouse-IS2M, CNRS UMR 7361, Jean Starcky, 15, F-68057 Mulhouse, France
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7
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Chen H, Hart LR, Hayes W, Siviour CR. Mechanical characterisation and modelling of a thermoreversible superamolecular polyurethane over a wide range of rates. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123607] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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8
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Luo Y, Chen X, Chen J, Wu Z, Ma H, Liu X, Xiang B, Ma X, Luo Z. A combined experimental and molecular dynamics simulation study of an intrinsic self-healing polyurethane elastomer based on a dynamic non-covalent mechanism. SOFT MATTER 2021; 17:2191-2204. [PMID: 33459746 DOI: 10.1039/d0sm02085k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
An intrinsic self-healing polyurethane (PU) elastomer with excellent self-healing efficiency was prepared. The self-healing properties of this elastomer as well as the temperature dependence of self-healing can be tailored by regulating the molar ratio of hard to soft segments. The self-healing efficiency of 92.5% is the highest when the molar ratio of 4,4-methylenedicyclohexyl diisocyanate (HMDI) to polypropylene carbonate polyol (PPC) is 1.3 and the temperature is 25 °C. In situ temperature swing infrared spectra and low-field nuclear magnetic resonance reveal that the soft segment, PPC, endows PU with a dense dynamic hydrogen bond network, and the dissociation and reconstruction of the hydrogen bond network enable the PU to heal. To date, the exchange of hydrogen bonds has not been observed intuitively through experimental means. Therefore, the number, type, strength, lifetime, and the exchange of hydrogen bonds in the self-healing process at different temperatures were investigated by molecular dynamics (MD) simulation. The simulated results show that the type of hydrogen bond exchange between functional groups will be affected by temperature. The hydrogen bonds between urethane and urea groups play a leading role in the self-healing properties due to the high strength and a large number of hydrogen bonds at both 25 and 50 °C. The stronger strength, longer lifetime, and greater number of effective hydrogen bonds at 25 °C make the self-healing efficiency of PU higher than at 50 °C.
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Affiliation(s)
- Yanlong Luo
- College of Science, Nanjing Forestry University, Nanjing 210037, China. and Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Xianling Chen
- College of Science, Nanjing Forestry University, Nanjing 210037, China.
| | - Jialiang Chen
- College of Science, Nanjing Forestry University, Nanjing 210037, China.
| | - Zhipeng Wu
- College of Science, Nanjing Forestry University, Nanjing 210037, China.
| | - Hongming Ma
- Highbery New Nano Materials Technology Co., Ltd, Changzhou 213100, China
| | - Xuejing Liu
- Highbery New Nano Materials Technology Co., Ltd, Changzhou 213100, China
| | - Bo Xiang
- College of Science, Nanjing Forestry University, Nanjing 210037, China. and Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Xiaofeng Ma
- College of Science, Nanjing Forestry University, Nanjing 210037, China. and Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Zhenyang Luo
- College of Science, Nanjing Forestry University, Nanjing 210037, China. and Institute of Polymer Materials, Nanjing Forestry University, Nanjing 210037, China
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9
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Batys P, Fedorov D, Mohammadi P, Lemetti L, Linder MB, Sammalkorpi M. Self-Assembly of Silk-like Protein into Nanoscale Bicontinuous Networks under Phase-Separation Conditions. Biomacromolecules 2021; 22:690-700. [PMID: 33406825 DOI: 10.1021/acs.biomac.0c01506] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Liquid-liquid phase separation of biomacromolecules is crucial in various inter- and extracellular biological functions. This includes formation of condensates to control, e.g., biochemical reactions and structural assembly. The same phenomenon is also found to be critically important in protein-based high-performance biological materials. Here, we use a well-characterized model triblock protein system to demonstrate the molecular level formation mechanism and structure of its condensate. Large-scale molecular modeling supported by analytical ultracentrifuge characterization combined with our earlier high magnification precision cryo-SEM microscopy imaging leads to deducing that the condensate has a bicontinuous network structure. The bicontinuous network rises from the proteins having a combination of sites with stronger mutual attraction and multiple weakly attractive regions connected by flexible, multiconfigurational linker regions. These attractive sites and regions behave as stickers of varying adhesion strength. For the examined model triblock protein construct, the β-sheet-rich end units are the stronger stickers, while additional weaker stickers, contributing to the condensation affinity, rise from spring-like connections in the flexible middle region of the protein. The combination of stronger and weaker sticker-like connections and the flexible regions between the stickers result in a versatile, liquid-like, self-healing structure. This structure also explains the high flexibility, easy deformability, and diffusion of the proteins, decreasing only 10-100 times in the bicontinuous network formed in the condensate phase in comparison to dilute protein solution. The here demonstrated structure and condensation mechanism of a model triblock protein construct via a combination of the stronger binding regions and the weaker, flexible sacrificial-bond-like network as well as its generalizability via polymer sticker models provide means to not only understand intracellular organization, regulation, and cellular function but also to identify direct control factors for and to enable engineering improved protein and polymer constructs to enhance control of advanced fiber materials, smart liquid biointerfaces, or self-healing matrices for pharmaceutics or bioengineering materials.
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Affiliation(s)
- Piotr Batys
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, PL-30239 Krakow, Poland.,Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Dmitrii Fedorov
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Pezhman Mohammadi
- VTT Technical Research Centre of Finland Ltd., FI-02044 Espoo, Finland
| | - Laura Lemetti
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Markus B Linder
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Maria Sammalkorpi
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland.,Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
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10
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Hermida-Merino D, Hart LR, Harris PJ, Slark AT, Hamley IW, Hayes W. The effect of chiral end groups on the assembly of supramolecular polyurethanes. Polym Chem 2021. [DOI: 10.1039/d1py00714a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe the generation of supramolecular polyurethanes and the positive effect that chirality has upon the physical properties of these materials.
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Affiliation(s)
| | - Lewis R. Hart
- Department of Chemistry
- University of Reading
- Reading
- UK
| | - Peter J. Harris
- Electron Microscopy Laboratory
- University of Reading
- Reading
- UK
| | | | - Ian W. Hamley
- Department of Chemistry
- University of Reading
- Reading
- UK
| | - Wayne Hayes
- Department of Chemistry
- University of Reading
- Reading
- UK
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11
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Tian S, Chen Y, Zhu Y, Fan H. A Fluorescent Polyurethane with Covalently Cross-Linked Rhodamine Derivatives. Polymers (Basel) 2020; 12:E1989. [PMID: 32882833 PMCID: PMC7564602 DOI: 10.3390/polym12091989] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 08/29/2020] [Accepted: 08/29/2020] [Indexed: 01/05/2023] Open
Abstract
Rhodamine derivatives (RDs) with three reactive hydrogens were synthesized and well characterized by Fourier transform infra-red spectroscopy (FTIR), 1H nuclear magnetic resonance (1H NMR) and electrospray ionization mass spectra (ESI mass). Then, the obtained RD was covalently cross-linked into polyurethane (PU) matrix through chemical linkages to fabricate a network structure, and the fluorescent properties, mechanical properties, thermal stability, and emulsion particle size were systematically investigated. Results demonstrate that PU-RD maintains initial fluorescent properties and emits desirable yellow fluorescence under ultraviolet irradiation. Moreover, compared with linear PU without fluorescers, PU-RD shows clearly improved mechanical properties and thermal stability, on account of the formed network structures.
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Affiliation(s)
- Saiqi Tian
- College of Education, Wenzhou University, Wenzhou 325035, China; (Y.C.); (Y.Z.)
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China;
| | - Yinyan Chen
- College of Education, Wenzhou University, Wenzhou 325035, China; (Y.C.); (Y.Z.)
| | - Yifan Zhu
- College of Education, Wenzhou University, Wenzhou 325035, China; (Y.C.); (Y.Z.)
| | - Haojun Fan
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China;
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
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12
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Golkaram M, Portale G, Mulder P, Maniar D, Faraji S, Loos K. Order–disorder transition in supramolecular polymer combs/brushes with polymeric side chains. Polym Chem 2020. [DOI: 10.1039/c9py01915d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three groups of supramolecular comb/brush polymers with polymeric side chains are developed, showing different mechanical properties and morphologies.
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Affiliation(s)
- Milad Golkaram
- Macromolecular Chemistry and New Polymeric Materials
- Zernike Institute for Advanced Materials
- University of Groningen
- 9747 AG Groningen
- The Netherlands
| | - Giuseppe Portale
- Macromolecular Chemistry and New Polymeric Materials
- Zernike Institute for Advanced Materials
- University of Groningen
- 9747 AG Groningen
- The Netherlands
| | - Pascal Mulder
- Macromolecular Chemistry and New Polymeric Materials
- Zernike Institute for Advanced Materials
- University of Groningen
- 9747 AG Groningen
- The Netherlands
| | - Dina Maniar
- Macromolecular Chemistry and New Polymeric Materials
- Zernike Institute for Advanced Materials
- University of Groningen
- 9747 AG Groningen
- The Netherlands
| | - Shirin Faraji
- Theoretical Chemistry Group
- Zernike Institute for Advanced Materials
- University of Groningen
- 9747 AG Groningen
- The Netherlands
| | - Katja Loos
- Macromolecular Chemistry and New Polymeric Materials
- Zernike Institute for Advanced Materials
- University of Groningen
- 9747 AG Groningen
- The Netherlands
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13
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Wang Y, Li Y, Bai J, Li Z, Hu G. A Robust and High Self‐Healing Efficiency Poly(Urea‐Urethane) Based on Disulfide Bonds with Cost‐Effective Strategy. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900340] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yulong Wang
- Institute of Macromolecules and Bioengineering North University of China No. 3 College Road Taiyuan Shanxi 030051 China
- Department of Materials Engineering Taiyuan Institute of Technology No. 31 Xinlan Road Taiyuan Shanxi 030008 China
| | - Yaqiong Li
- Department of Materials Engineering Taiyuan Institute of Technology No. 31 Xinlan Road Taiyuan Shanxi 030008 China
| | - Jingjing Bai
- Institute of Macromolecules and Bioengineering North University of China No. 3 College Road Taiyuan Shanxi 030051 China
- Department of Materials Engineering Taiyuan Institute of Technology No. 31 Xinlan Road Taiyuan Shanxi 030008 China
| | - Zhenzhong Li
- Department of Materials Engineering Taiyuan Institute of Technology No. 31 Xinlan Road Taiyuan Shanxi 030008 China
| | - Guosheng Hu
- Institute of Macromolecules and Bioengineering North University of China No. 3 College Road Taiyuan Shanxi 030051 China
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14
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Li JW, Cheng YH, Lee HT, Tsen WC, Chiu CW, Suen MC. Properties and degradation of castor oil-based fluoridated biopolyurethanes with different lengths of fluorinated segments. RSC Adv 2019; 9:31133-31149. [PMID: 35529409 PMCID: PMC9072421 DOI: 10.1039/c9ra04654b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 09/09/2019] [Indexed: 12/12/2022] Open
Abstract
To develop a durable, biodegradable polymer, this study successfully synthesized a castor-oil-based prepolymer by using methylene diphenyl diisocyanate as a hard segment, polycaprolactone as a soft segment, and castor oil as a functional monomer. We added perfluorinated alkyl segments with varying chain lengths into the castor-oil-based polymer to synthesize castor-oil-based fluoridated biopolyurethanes (FCOPUs) with different fluorinated segment lengths. The castor-oil-based polyurethanes with different fluorinated segment lengths had similar molecular weights, which enabled accurate analysis of the effect of the lengths of fluorinated segments on FCOPUs. Nuclear magnetic resonance (NMR) was used to perform 1H NMR, 19F NMR, 19F-19F COSY, 1H-19F COSY, and HMBC analyses on the FCOPU structures. The results of Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy curve fitting verified the interaction between C-F⋯H-N and C-F⋯C[double bond, length as m-dash]O. This interaction increased as the fluorinated segments became longer. Regarding the thermal properties of the FCOPUs, the thermogravimetric analysis, differential scanning calorimetry, and dynamic mechanical analysis results revealed that long fluorinated segments were associated with increased thermal stability in the FCOPUs. The atomic force microscopy and tensile strength test suggested that long fluorinated segments contained in the FCOPUs increased the degree of phase separation and tensile strength in FCOPUs. Finally, we dipped the FCOPUs in a 3 wt% NaOH solution, calculated the weight loss of the FCOPUs, and observed their surface structure by using scanning electron microscopy.
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Affiliation(s)
- Jia-Wun Li
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology No. 43, Keelung Rd., Sec. 4, Da'an Dist Taipei 10607 Taiwan ROC +886-2-2737-6544 +886-2-2737-6521
| | - Yung-Hsin Cheng
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology No. 43, Keelung Rd., Sec. 4, Da'an Dist Taipei 10607 Taiwan ROC +886-2-2737-6544 +886-2-2737-6521
| | - Hsun-Tsing Lee
- Department of Materials Science and Engineering, Vanung University Jongli Taoyuan 32061 Taiwan ROC
| | - Wen-Chin Tsen
- Department of Fashion and Design, Lee-Ming Institute of Technology New Taipei City 24305 Taiwan ROC
| | - Chih-Wei Chiu
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology No. 43, Keelung Rd., Sec. 4, Da'an Dist Taipei 10607 Taiwan ROC +886-2-2737-6544 +886-2-2737-6521
| | - Maw-Cherng Suen
- Department of Fashion Business Administration, Lee-Ming Institute of Technology No.22, Sec.3, Tailin Rd. Taishan Dist. New Taipei City 24305 Taiwan ROC +886-2-2909-7811 ext. 1101
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Salimi S, Hart L, Feula A, Hermida-Merino D, Touré A, Kabova E, Ruiz-Cantu L, Irvine D, Wildman R, Shankland K, Hayes W. Property enhancement of healable supramolecular polyurethanes. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.05.042] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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