Effect of hard segment content on the phase separation and properties of hydroxyl-terminated polybutadiene thermoplastic polyurethane
Thermoplastic polyurethane (TPU) possesses a distinctive microphase separation structure resulting from the thermodynamic incompatibility between its soft and hard segments. The content of hard segments is a significant factor that impacts the micromorphology and associated properties of TPU. In thi...
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Elsevier
2025-02-01
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| Series: | Polymer Testing |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0142941824003581 |
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| author | Boxin Liu Zhihao Niu Zhanglei Wang Yimin Wang Hua Zou Xiuying Zhao Shikai Hu |
| author_facet | Boxin Liu Zhihao Niu Zhanglei Wang Yimin Wang Hua Zou Xiuying Zhao Shikai Hu |
| author_sort | Boxin Liu |
| collection | DOAJ |
| description | Thermoplastic polyurethane (TPU) possesses a distinctive microphase separation structure resulting from the thermodynamic incompatibility between its soft and hard segments. The content of hard segments is a significant factor that impacts the micromorphology and associated properties of TPU. In this study, hydroxyl-terminated polybutadiene thermoplastic polyurethanes (HTPB-TPUs) were synthesized using a two-step method in which hydroxyl-terminated polybutadiene, toluene diisocyanate, and 1,4-butanediol were incorporated. These HTPB-TPUs were designed to lack hydrogen bonding between the soft and hard segments. The structure and properties of the HTPB-TPUs were comprehensively evaluated. The results demonstrated a noticeable influence of the hard segment content on the degree of microphase separation. A combination of analytical techniques was employed to elucidate the effect of hard segment content on phase separation. Additionally, all-atom molecular dynamics simulations were conducted to determine the number of hydrogen bonds. These simulations served to verify the impact of the hard segment content on phase separation. Furthermore, the relationship between the hard segment content and the mechanical properties was elucidated by examining the phase separation phenomenon. This study provides valuable insights into the interaction between the structure and properties of TPU, laying a foundation for future investigations in this area. |
| format | Article |
| id | doaj-art-c3f385a6f41a41b4a89b1c86c03720d0 |
| institution | Kabale University |
| issn | 1873-2348 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Polymer Testing |
| spelling | doaj-art-c3f385a6f41a41b4a89b1c86c03720d02025-01-12T05:24:08ZengElsevierPolymer Testing1873-23482025-02-01143108681Effect of hard segment content on the phase separation and properties of hydroxyl-terminated polybutadiene thermoplastic polyurethaneBoxin Liu0Zhihao Niu1Zhanglei Wang2Yimin Wang3Hua Zou4Xiuying Zhao5Shikai Hu6State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, ChinaState Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, ChinaState Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, ChinaState Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, ChinaState 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; Corresponding author.State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China.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; Corresponding author.State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China.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; Corresponding author.State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China.Thermoplastic polyurethane (TPU) possesses a distinctive microphase separation structure resulting from the thermodynamic incompatibility between its soft and hard segments. The content of hard segments is a significant factor that impacts the micromorphology and associated properties of TPU. In this study, hydroxyl-terminated polybutadiene thermoplastic polyurethanes (HTPB-TPUs) were synthesized using a two-step method in which hydroxyl-terminated polybutadiene, toluene diisocyanate, and 1,4-butanediol were incorporated. These HTPB-TPUs were designed to lack hydrogen bonding between the soft and hard segments. The structure and properties of the HTPB-TPUs were comprehensively evaluated. The results demonstrated a noticeable influence of the hard segment content on the degree of microphase separation. A combination of analytical techniques was employed to elucidate the effect of hard segment content on phase separation. Additionally, all-atom molecular dynamics simulations were conducted to determine the number of hydrogen bonds. These simulations served to verify the impact of the hard segment content on phase separation. Furthermore, the relationship between the hard segment content and the mechanical properties was elucidated by examining the phase separation phenomenon. This study provides valuable insights into the interaction between the structure and properties of TPU, laying a foundation for future investigations in this area.http://www.sciencedirect.com/science/article/pii/S0142941824003581Hydroxyl-terminated polybutadienePolyurethaneHard segment contentPhase separationStructure and properties |
| spellingShingle | Boxin Liu Zhihao Niu Zhanglei Wang Yimin Wang Hua Zou Xiuying Zhao Shikai Hu Effect of hard segment content on the phase separation and properties of hydroxyl-terminated polybutadiene thermoplastic polyurethane Polymer Testing Hydroxyl-terminated polybutadiene Polyurethane Hard segment content Phase separation Structure and properties |
| title | Effect of hard segment content on the phase separation and properties of hydroxyl-terminated polybutadiene thermoplastic polyurethane |
| title_full | Effect of hard segment content on the phase separation and properties of hydroxyl-terminated polybutadiene thermoplastic polyurethane |
| title_fullStr | Effect of hard segment content on the phase separation and properties of hydroxyl-terminated polybutadiene thermoplastic polyurethane |
| title_full_unstemmed | Effect of hard segment content on the phase separation and properties of hydroxyl-terminated polybutadiene thermoplastic polyurethane |
| title_short | Effect of hard segment content on the phase separation and properties of hydroxyl-terminated polybutadiene thermoplastic polyurethane |
| title_sort | effect of hard segment content on the phase separation and properties of hydroxyl terminated polybutadiene thermoplastic polyurethane |
| topic | Hydroxyl-terminated polybutadiene Polyurethane Hard segment content Phase separation Structure and properties |
| url | http://www.sciencedirect.com/science/article/pii/S0142941824003581 |
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