Synthesis and Comparative Study of Polyether-<i>b</i>-polybutadiene-<i>b</i>-polyether Triblock Copolymers for Use as Polyurethanes
In this paper, the effects of HTPBs with different main-chain microstructures on their triblock copolymers and polyurethane properties were investigated. Three polyether-modified HTPB triblock copolymers were successfully synthesized via a cationic ring-opening copolymerization reaction using three...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-08-01
|
| Series: | Polymers |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4360/15/16/3486 |
| _version_ | 1797583368206942208 |
|---|---|
| author | Pengzhi Bi Xiuzhong Zhu Jinbang Han Li Tian Wanbin Zhang |
| author_facet | Pengzhi Bi Xiuzhong Zhu Jinbang Han Li Tian Wanbin Zhang |
| author_sort | Pengzhi Bi |
| collection | DOAJ |
| description | In this paper, the effects of HTPBs with different main-chain microstructures on their triblock copolymers and polyurethane properties were investigated. Three polyether-modified HTPB triblock copolymers were successfully synthesized via a cationic ring-opening copolymerization reaction using three HTPBs with different microstructures prepared via three different polymerization methods as the macromolecular chain transfer agents and tetrahydrofuran (THF) and propylene oxide (PO) as the copolymerization monomers. Finally, the corresponding polyurethane elastomers were prepared using the three triblock copolymers as soft segments and toluene diisocyanate (TDI) as hard segments. The results of an analysis of the triblock copolymers showed that the triblock copolymers had lower viscosity and glass transition temperature (<i>T<sub>g</sub></i>) values as the HTPB 1,2 structure content decreased, although the effect on the thermal decomposition temperature was not significant. An analysis of the polyurethane elastomers revealed that as the content of the 1,2 structure in HTPB increased, its corresponding polyurethane elastomers showed a gradual increase in breaking strength and a gradual decrease in elongation at break. In addition, PU-1 had stronger crystallization properties compared to PU-2 and PU-3. However, the differences in the microstructures of the HTPBs did not seem to have much effect on the surface properties of the polyurethane elastomers. |
| first_indexed | 2024-03-10T23:37:56Z |
| format | Article |
| id | doaj.art-b815824f4eaf4ce7884599e36143ba30 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T23:37:56Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-b815824f4eaf4ce7884599e36143ba302023-11-19T02:45:07ZengMDPI AGPolymers2073-43602023-08-011516348610.3390/polym15163486Synthesis and Comparative Study of Polyether-<i>b</i>-polybutadiene-<i>b</i>-polyether Triblock Copolymers for Use as PolyurethanesPengzhi Bi0Xiuzhong Zhu1Jinbang Han2Li Tian3Wanbin Zhang4State Key Laboratory of Biobased Material and Green Papermaking, Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Faculty of Light Industry, Shandong Academy of Sciences, Qilu University of Technology, Jinan 250353, ChinaState Key Laboratory of Biobased Material and Green Papermaking, Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Faculty of Light Industry, Shandong Academy of Sciences, Qilu University of Technology, Jinan 250353, ChinaState Key Laboratory of Biobased Material and Green Papermaking, Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Faculty of Light Industry, Shandong Academy of Sciences, Qilu University of Technology, Jinan 250353, ChinaState Key Laboratory of Biobased Material and Green Papermaking, Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Faculty of Light Industry, Shandong Academy of Sciences, Qilu University of Technology, Jinan 250353, ChinaKey Laboratory of Auxiliary Chemistry and Technology for Chemical Industry Ministry of Education, Shaanxi Collaborative Innovation Center of Industrial Auxiliary Chemistry and Technology, Shaanxi University of Science and Technology, Xi’an 710021, ChinaIn this paper, the effects of HTPBs with different main-chain microstructures on their triblock copolymers and polyurethane properties were investigated. Three polyether-modified HTPB triblock copolymers were successfully synthesized via a cationic ring-opening copolymerization reaction using three HTPBs with different microstructures prepared via three different polymerization methods as the macromolecular chain transfer agents and tetrahydrofuran (THF) and propylene oxide (PO) as the copolymerization monomers. Finally, the corresponding polyurethane elastomers were prepared using the three triblock copolymers as soft segments and toluene diisocyanate (TDI) as hard segments. The results of an analysis of the triblock copolymers showed that the triblock copolymers had lower viscosity and glass transition temperature (<i>T<sub>g</sub></i>) values as the HTPB 1,2 structure content decreased, although the effect on the thermal decomposition temperature was not significant. An analysis of the polyurethane elastomers revealed that as the content of the 1,2 structure in HTPB increased, its corresponding polyurethane elastomers showed a gradual increase in breaking strength and a gradual decrease in elongation at break. In addition, PU-1 had stronger crystallization properties compared to PU-2 and PU-3. However, the differences in the microstructures of the HTPBs did not seem to have much effect on the surface properties of the polyurethane elastomers.https://www.mdpi.com/2073-4360/15/16/3486hydroxyl-terminated polybutadienepolyether modifiedtriblock copolymercomparative study |
| spellingShingle | Pengzhi Bi Xiuzhong Zhu Jinbang Han Li Tian Wanbin Zhang Synthesis and Comparative Study of Polyether-<i>b</i>-polybutadiene-<i>b</i>-polyether Triblock Copolymers for Use as Polyurethanes Polymers hydroxyl-terminated polybutadiene polyether modified triblock copolymer comparative study |
| title | Synthesis and Comparative Study of Polyether-<i>b</i>-polybutadiene-<i>b</i>-polyether Triblock Copolymers for Use as Polyurethanes |
| title_full | Synthesis and Comparative Study of Polyether-<i>b</i>-polybutadiene-<i>b</i>-polyether Triblock Copolymers for Use as Polyurethanes |
| title_fullStr | Synthesis and Comparative Study of Polyether-<i>b</i>-polybutadiene-<i>b</i>-polyether Triblock Copolymers for Use as Polyurethanes |
| title_full_unstemmed | Synthesis and Comparative Study of Polyether-<i>b</i>-polybutadiene-<i>b</i>-polyether Triblock Copolymers for Use as Polyurethanes |
| title_short | Synthesis and Comparative Study of Polyether-<i>b</i>-polybutadiene-<i>b</i>-polyether Triblock Copolymers for Use as Polyurethanes |
| title_sort | synthesis and comparative study of polyether i b i polybutadiene i b i polyether triblock copolymers for use as polyurethanes |
| topic | hydroxyl-terminated polybutadiene polyether modified triblock copolymer comparative study |
| url | https://www.mdpi.com/2073-4360/15/16/3486 |
| work_keys_str_mv | AT pengzhibi synthesisandcomparativestudyofpolyetheribipolybutadieneibipolyethertriblockcopolymersforuseaspolyurethanes AT xiuzhongzhu synthesisandcomparativestudyofpolyetheribipolybutadieneibipolyethertriblockcopolymersforuseaspolyurethanes AT jinbanghan synthesisandcomparativestudyofpolyetheribipolybutadieneibipolyethertriblockcopolymersforuseaspolyurethanes AT litian synthesisandcomparativestudyofpolyetheribipolybutadieneibipolyethertriblockcopolymersforuseaspolyurethanes AT wanbinzhang synthesisandcomparativestudyofpolyetheribipolybutadieneibipolyethertriblockcopolymersforuseaspolyurethanes |