Segmented polyurethanes containing movable rotaxane units on the main chain: Synthesis, structure, and mechanical properties
In this study, segmented polyurethanes (SPUs), including those with rotaxane structures, were synthesized in high yields (>83%) using a [2]rotaxane diol that has a hydroxy group in each wheel and axle component. The traditional prepolymer method was applied to introduce rotaxane structures at dif...
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| Veröffentlicht in: | Polymer (Guilford) 2020-04, Vol.193, p.1-9, Article 122358 |
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| creator | Sawada, Jun Sogawa, Hiromitsu Marubayashi, Hironori Nojima, Shuichi Otsuka, Hideyuki Nakajima, Ken Akae, Yosuke Takata, Toshikazu |
| description | In this study, segmented polyurethanes (SPUs), including those with rotaxane structures, were synthesized in high yields (>83%) using a [2]rotaxane diol that has a hydroxy group in each wheel and axle component. The traditional prepolymer method was applied to introduce rotaxane structures at different locations in the soft segment and at the boundary between soft and hard segments. The mechanical properties of the formed SPUs were evaluated via tensile tests, and we determined that the introduction of an appropriate amount of rotaxane structure improved their extensibility, toughness, and stress-relaxing properties. Differential scanning calorimetry (DSC), attenuated total reflection Fourier transform infrared spectroscopy (ATR-FT-IR), and synchrotron X-ray measurements revealed that the phase-separated structures of the SPUs were almost independent of the amount of rotaxane. The highly movable rotaxane scaffold was even effective for toughening the SPU, which is a physically cross-linked network, without changing their phase-separated structures.
[Display omitted]
•Segmented polyurethanes (SPUs), including those with rotaxane structures, were synthesized.•The introduction of an appropriate amount of rotaxane structure improved toughness and stress-relaxing properties.•The highly movable rotaxane scaffold was even effective for toughening the physically cross-linked network polymer. |
| doi_str_mv | 10.1016/j.polymer.2020.122358 |
| format | Article |
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[Display omitted]
•Segmented polyurethanes (SPUs), including those with rotaxane structures, were synthesized.•The introduction of an appropriate amount of rotaxane structure improved toughness and stress-relaxing properties.•The highly movable rotaxane scaffold was even effective for toughening the physically cross-linked network polymer.</description><identifier>ISSN: 0032-3861</identifier><identifier>EISSN: 1873-2291</identifier><identifier>DOI: 10.1016/j.polymer.2020.122358</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Calorimetry ; Crosslinking ; Differential scanning calorimetry ; Fourier transforms ; Infrared reflection ; Infrared spectroscopy ; Mechanical properties ; Polyurethane ; Polyurethane resins ; Prepolymers ; Rotaxane ; Rotaxanes ; Segmented polyurethane ; Shafts (machine elements) ; Synchrotron radiation ; Synchrotrons ; Tensile tests ; Thermoplastic elastomer</subject><ispartof>Polymer (Guilford), 2020-04, Vol.193, p.1-9, Article 122358</ispartof><rights>2020 Elsevier Ltd</rights><rights>Copyright Elsevier BV 2020</rights><rights>Copyright Elsevier BV Apr 10, 2020</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c478t-2ca7e3deec2ea07a3a3ec53c8a1c3c2a44814b4e81b709d44ee4243a95481f243</citedby><cites>FETCH-LOGICAL-c478t-2ca7e3deec2ea07a3a3ec53c8a1c3c2a44814b4e81b709d44ee4243a95481f243</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0032386120301956$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids></links><search><creatorcontrib>Sawada, Jun</creatorcontrib><creatorcontrib>Sogawa, Hiromitsu</creatorcontrib><creatorcontrib>Marubayashi, Hironori</creatorcontrib><creatorcontrib>Nojima, Shuichi</creatorcontrib><creatorcontrib>Otsuka, Hideyuki</creatorcontrib><creatorcontrib>Nakajima, Ken</creatorcontrib><creatorcontrib>Akae, Yosuke</creatorcontrib><creatorcontrib>Takata, Toshikazu</creatorcontrib><title>Segmented polyurethanes containing movable rotaxane units on the main chain: Synthesis, structure, and mechanical properties</title><title>Polymer (Guilford)</title><description>In this study, segmented polyurethanes (SPUs), including those with rotaxane structures, were synthesized in high yields (>83%) using a [2]rotaxane diol that has a hydroxy group in each wheel and axle component. The traditional prepolymer method was applied to introduce rotaxane structures at different locations in the soft segment and at the boundary between soft and hard segments. The mechanical properties of the formed SPUs were evaluated via tensile tests, and we determined that the introduction of an appropriate amount of rotaxane structure improved their extensibility, toughness, and stress-relaxing properties. Differential scanning calorimetry (DSC), attenuated total reflection Fourier transform infrared spectroscopy (ATR-FT-IR), and synchrotron X-ray measurements revealed that the phase-separated structures of the SPUs were almost independent of the amount of rotaxane. The highly movable rotaxane scaffold was even effective for toughening the SPU, which is a physically cross-linked network, without changing their phase-separated structures.
[Display omitted]
•Segmented polyurethanes (SPUs), including those with rotaxane structures, were synthesized.•The introduction of an appropriate amount of rotaxane structure improved toughness and stress-relaxing properties.•The highly movable rotaxane scaffold was even effective for toughening the physically cross-linked network polymer.</description><subject>Calorimetry</subject><subject>Crosslinking</subject><subject>Differential scanning calorimetry</subject><subject>Fourier transforms</subject><subject>Infrared reflection</subject><subject>Infrared spectroscopy</subject><subject>Mechanical properties</subject><subject>Polyurethane</subject><subject>Polyurethane resins</subject><subject>Prepolymers</subject><subject>Rotaxane</subject><subject>Rotaxanes</subject><subject>Segmented polyurethane</subject><subject>Shafts (machine elements)</subject><subject>Synchrotron radiation</subject><subject>Synchrotrons</subject><subject>Tensile tests</subject><subject>Thermoplastic elastomer</subject><issn>0032-3861</issn><issn>1873-2291</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNqFkVtLAzEQhYMoWKs_QQj42q257c0XkeINCj5Un0OanbZZdpOaZIsFf7wp9VlfJsOcb84QDkLXlEwpocVtO926bt-DnzLC0owxnlcnaESrkmeM1fQUjQjhLONVQc_RRQgtIYTlTIzQ9wLWPdgIDT6YDB7iRlkIWDsblbHGrnHvdmrZAfYuqq8k4sGaGLCzOG4A94nCepPqHV7sbRoFEyY4RD_omPwmWNkG95AQa7Tq8Na7LfhoIFyis5XqAlz9vmP08fT4PnvJ5m_Pr7OHeaZFWcWMaVUCbwA0A0VKxRUHnXNdKaq5ZkqIioqlgIouS1I3QgAIJriq8ySsUjdGN0ffdPpzgBBl6wZv00nJhBBFxQtG_qYoJQWjok5UfqS0dyF4WMmtN73ye0mJPMQhW_kbhzzEIY9xpL374x6kj-5MUoM2YDU0xoOOsnHmH4cfFSyYNg</recordid><startdate>20200410</startdate><enddate>20200410</enddate><creator>Sawada, Jun</creator><creator>Sogawa, Hiromitsu</creator><creator>Marubayashi, Hironori</creator><creator>Nojima, Shuichi</creator><creator>Otsuka, Hideyuki</creator><creator>Nakajima, Ken</creator><creator>Akae, Yosuke</creator><creator>Takata, Toshikazu</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7QO</scope><scope>7QQ</scope><scope>7SC</scope><scope>7SE</scope><scope>7SP</scope><scope>7SR</scope><scope>7T7</scope><scope>7TA</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>H8G</scope><scope>JG9</scope><scope>JQ2</scope><scope>KR7</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope><scope>P64</scope></search><sort><creationdate>20200410</creationdate><title>Segmented polyurethanes containing movable rotaxane units on the main chain: Synthesis, structure, and mechanical properties</title><author>Sawada, Jun ; 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The traditional prepolymer method was applied to introduce rotaxane structures at different locations in the soft segment and at the boundary between soft and hard segments. The mechanical properties of the formed SPUs were evaluated via tensile tests, and we determined that the introduction of an appropriate amount of rotaxane structure improved their extensibility, toughness, and stress-relaxing properties. Differential scanning calorimetry (DSC), attenuated total reflection Fourier transform infrared spectroscopy (ATR-FT-IR), and synchrotron X-ray measurements revealed that the phase-separated structures of the SPUs were almost independent of the amount of rotaxane. The highly movable rotaxane scaffold was even effective for toughening the SPU, which is a physically cross-linked network, without changing their phase-separated structures.
[Display omitted]
•Segmented polyurethanes (SPUs), including those with rotaxane structures, were synthesized.•The introduction of an appropriate amount of rotaxane structure improved toughness and stress-relaxing properties.•The highly movable rotaxane scaffold was even effective for toughening the physically cross-linked network polymer.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.polymer.2020.122358</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Polymer (Guilford), 2020-04, Vol.193, p.1-9, Article 122358 |
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| source | Elsevier ScienceDirect Journals |
| subjects | Calorimetry Crosslinking Differential scanning calorimetry Fourier transforms Infrared reflection Infrared spectroscopy Mechanical properties Polyurethane Polyurethane resins Prepolymers Rotaxane Rotaxanes Segmented polyurethane Shafts (machine elements) Synchrotron radiation Synchrotrons Tensile tests Thermoplastic elastomer |
| title | Segmented polyurethanes containing movable rotaxane units on the main chain: Synthesis, structure, and mechanical properties |
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