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Bi P, Zhu X, Han J, Tian L, Zhang W. Synthesis and Comparative Study of Polyether- b-polybutadiene- b-polyether Triblock Copolymers for Use as Polyurethanes. Polymers (Basel) 2023; 15:3486. [PMID: 37631543 PMCID: PMC10459386 DOI: 10.3390/polym15163486] [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: 06/29/2023] [Revised: 07/31/2023] [Accepted: 08/01/2023] [Indexed: 08/27/2023] Open
Abstract
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 (Tg) 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.
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Affiliation(s)
- Pengzhi Bi
- State 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, China; (P.B.); (J.H.); (L.T.)
- Key Laboratory for Green Leather Manufacture Technology of China National Light Industry Council, Faculty of Light Industry, Shandong Academy of Sciences, Qilu University of Technology, Jinan 250353, China
| | - Xiuzhong Zhu
- State 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, China; (P.B.); (J.H.); (L.T.)
- Key Laboratory for Green Leather Manufacture Technology of China National Light Industry Council, Faculty of Light Industry, Shandong Academy of Sciences, Qilu University of Technology, Jinan 250353, China
- Key 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, China;
| | - Jinbang Han
- State 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, China; (P.B.); (J.H.); (L.T.)
- Key Laboratory for Green Leather Manufacture Technology of China National Light Industry Council, Faculty of Light Industry, Shandong Academy of Sciences, Qilu University of Technology, Jinan 250353, China
| | - Li Tian
- State 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, China; (P.B.); (J.H.); (L.T.)
- Key Laboratory for Green Leather Manufacture Technology of China National Light Industry Council, Faculty of Light Industry, Shandong Academy of Sciences, Qilu University of Technology, Jinan 250353, China
| | - Wanbin Zhang
- Key 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, China;
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Klapec DJ, Czarnopys G, Pannuto J. Interpol review of the analysis and detection of explosives and explosives residues. Forensic Sci Int Synerg 2023; 6:100298. [PMID: 36685733 PMCID: PMC9845958 DOI: 10.1016/j.fsisyn.2022.100298] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Douglas J. Klapec
- Arson and Explosives Section I, United States Department of Justice, Bureau of Alcohol, Tobacco, Firearms and Explosives, Forensic Science Laboratory, 6000 Ammendale Road, Ammendale, MD, 20705, USA
| | - Greg Czarnopys
- Forensic Services, United States Department of Justice, Bureau of Alcohol, Tobacco, Firearms and Explosives, Forensic Science Laboratory, 6000 Ammendale Road, Ammendale, MD, 20705, USA
| | - Julie Pannuto
- United States Department of Justice, Bureau of Alcohol, Tobacco, Firearms and Explosives, Forensic Science Laboratory, 6000 Ammendale Road, Ammendale, MD, 20705, USA
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Quagliano Amado JC, Ross PG, Mattos Silva Murakami L, Narciso Dutra JC. Properties of Hydroxyl‐Terminal Polybutadiene (HTPB) and Its Use as a Liner and Binder for Composite Propellants: A Review of Recent Advances. PROPELLANTS EXPLOSIVES PYROTECHNICS 2022. [DOI: 10.1002/prep.202100283] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Javier Carlos Quagliano Amado
- Applied Chemistry Department Institute for Scientific and Technical Research for the Defense (CITEDEF) Ave. JB de La Salle 4397 B1603ALO Buenos Aires Argentina
| | - Pablo Germán Ross
- Applied Chemistry Department Institute for Scientific and Technical Research for the Defense (CITEDEF) Ave. JB de La Salle 4397 B1603ALO Buenos Aires Argentina
| | - Lidia Mattos Silva Murakami
- InstitutoTecnológico de Aeronáutica (ITA) Praça Marechal Eduardo Gomes 50, Vila das Acácias CEP 12228-900 São José dos Campos, SP Brazil
| | - Jorge Carlos Narciso Dutra
- InstitutoTecnológico de Aeronáutica (ITA) Praça Marechal Eduardo Gomes 50, Vila das Acácias CEP 12228-900 São José dos Campos, SP Brazil
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