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1
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You Y, Zheng A, Wei D, Xu X, Guan Y, Chen J. Improving the thermal stability of poly[methyl(trifluoropropyl)siloxane] by introducing diphenylsiloxane units. RSC Adv 2023; 13:11424-11431. [PMID: 37063741 PMCID: PMC10091098 DOI: 10.1039/d3ra01285a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 03/31/2023] [Indexed: 04/18/2023] Open
Abstract
A series of poly(methyl(trifluoropropyl)-diphenyl siloxane) (P(MTFPS-co-DPS)) was synthesized by polycondensation of diphenylsilanediol and methyltrifluoropropylsiloxanediol. Their chemical structures were investigated by gel permeation chromatography (GPC), Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), and differential scanning calorimeter (DSC). The effect of diphenylsiloxane (DPS) units on the thermal stability of poly[methyl(trifluoropropyl)siloxane] (PMTFPS) was studied by thermogravimetric analysis (TGA), isothermal degradation tests, and pyrolysis-gas chromatography-mass spectrometry (Py-GCMS). The results showed that the thermal stability of PMTFPS improved with the introduction of DPS units into the chain. In particular, the temperature for 5% mass loss in PMTFPS increased by 72 °C under a nitrogen atmosphere. In addition, the mechanism by which the DPS units improve the thermal stability of PMTFPS was also investigated.
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Affiliation(s)
- Yang You
- School of Materials Science and Engineering, Shanghai Key Laboratory of Advanced Polymeric Materials, East China University of Science and Technology Shanghai 200237 China
| | - Anna Zheng
- School of Materials Science and Engineering, Shanghai Key Laboratory of Advanced Polymeric Materials, East China University of Science and Technology Shanghai 200237 China
| | - Dafu Wei
- School of Materials Science and Engineering, Shanghai Key Laboratory of Advanced Polymeric Materials, East China University of Science and Technology Shanghai 200237 China
| | - Xiang Xu
- School of Materials Science and Engineering, Shanghai Key Laboratory of Advanced Polymeric Materials, East China University of Science and Technology Shanghai 200237 China
| | - Yong Guan
- School of Materials Science and Engineering, Shanghai Key Laboratory of Advanced Polymeric Materials, East China University of Science and Technology Shanghai 200237 China
| | - Jianding Chen
- School of Materials Science and Engineering, Shanghai Key Laboratory of Advanced Polymeric Materials, East China University of Science and Technology Shanghai 200237 China
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You Y, Wei D, Xu X, Guan Y, Chen J, Xiao H. Effect of silphenylenesiloxane units on the thermal stability of poly[methyl(trifluoropropyl)siloxane]. CAN J CHEM ENG 2023. [DOI: 10.1002/cjce.24899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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Optimization and Characterization of the F-LSR Manufacturing Process Using Quaternary Ammonium Silanolate as an Initiator for Synthesizing Fluorosilicone. Polymers (Basel) 2022; 14:polym14245502. [PMID: 36559868 PMCID: PMC9784997 DOI: 10.3390/polym14245502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 12/04/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
Due to the growing demand for versatile hybrid materials that can withstand harsh conditions (below -40 °C), fluorosilicone copolymers are becoming promising materials that can overcome the limited operating temperature of conventional rubber. In order to synthesize a fluorosilicone copolymer, a potent initiator capable of simultaneously initiating various siloxane monomers in anionic ring-opening polymerization (AROP) is required. In this study, tetramethyl ammonium silanolate (TMAS), a quaternary ammonium (QA) anion, was employed as an initiator for AROP, thereby fluoro-methyl-vinyl-silicone (FVMQ) and fluoro-hydrido-methyl-silicone (FHMQ) were successfully synthesized under optimized conditions. FT-IR, NMR, and GPC analyses confirmed that the chain length and functional group content of FVMQ and FHMQ are controlled by changing the ratio of the components. Moreover, fluorine-involved liquid silicone rubber (F-LSR) was prepared with FVMQ as the main chain and FHMQ as a crosslinker. The tensile strength, elongation, and hardness of each F-LSR sample were measured. Finally, it was confirmed through TGA, DSC, TR-test, and embrittlement testing that elastic retention at low temperatures improved even though the heat resistance slightly decreased as the trifluoropropyl group increased in F-LSR. We anticipate that the optimization of fluorosilicone synthesis initiated by QA and the comprehensive characterization of F-LSRs with different fluorine content and chain lengths will be pivotal to academia and industry.
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Hu WJ, Xia QQ, Pan HT, Chen HY, Qu YX, Chen ZY, Zhang GD, Zhao L, Gong LX, Xue CG, Tang LC. Green and Rapid Preparation of Fluorosilicone Rubber Foam Materials with Tunable Chemical Resistance for Efficient Oil-Water Separation. Polymers (Basel) 2022; 14:polym14081628. [PMID: 35458379 PMCID: PMC9028597 DOI: 10.3390/polym14081628] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/10/2022] [Accepted: 04/15/2022] [Indexed: 11/16/2022] Open
Abstract
Polydimethylsiloxane (PDMS) foam materials with lightweight, excellent oil resistance and mechanical flexibility are highly needed for various practical applications in aerospace, transportation, and oil/water separation. However, traditional PDMS foam materials usually present poor chemical resistance and easily swell in various solvents, which greatly limits their potential application. Herein, novel fluorosilicone rubber foam (FSiRF) materials with different contents of trifluoropropyl lateral groups were designed and fabricated by a green (no solvents used) and rapid (<10 min foaming process) foaming/crosslinking approach at ambient temperature. Typically, vinyl-terminated poly(dimethyl-co-methyltrifluoropropyl) siloxanes with different fluorine contents of 0−50 mol% were obtained through ring-opening polymerization to effectively adjust the chemical resistance of the FSiRFs. Notably, the optimized FSiRF samples exhibit lightweight (~0.25 g/cm−3), excellent hydrophobicity/oleophilicity (WCA > 120°), reliable mechanical flexibility (complete recovery ability after stretching of 130% strain or compressing of >60%), and improved chemical resistance and structural stability in various solvents, making them promising candidates for efficient and continuous oil−water separation. This work provides an innovative concept to design and prepare advanced fluorosilicone rubber foam materials with excellent chemical resistance for potential oil−water separation application.
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Affiliation(s)
- Wan-Jun Hu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China; (W.-J.H.); (Q.-Q.X.); (H.-T.P.); (H.-Y.C.); (Y.-X.Q.); (Z.-Y.C.); (L.Z.); (L.-X.G.)
| | - Qiao-Qi Xia
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China; (W.-J.H.); (Q.-Q.X.); (H.-T.P.); (H.-Y.C.); (Y.-X.Q.); (Z.-Y.C.); (L.Z.); (L.-X.G.)
| | - Hong-Tao Pan
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China; (W.-J.H.); (Q.-Q.X.); (H.-T.P.); (H.-Y.C.); (Y.-X.Q.); (Z.-Y.C.); (L.Z.); (L.-X.G.)
| | - Hai-Yang Chen
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China; (W.-J.H.); (Q.-Q.X.); (H.-T.P.); (H.-Y.C.); (Y.-X.Q.); (Z.-Y.C.); (L.Z.); (L.-X.G.)
| | - Yong-Xiang Qu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China; (W.-J.H.); (Q.-Q.X.); (H.-T.P.); (H.-Y.C.); (Y.-X.Q.); (Z.-Y.C.); (L.Z.); (L.-X.G.)
| | - Zuan-Yu Chen
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China; (W.-J.H.); (Q.-Q.X.); (H.-T.P.); (H.-Y.C.); (Y.-X.Q.); (Z.-Y.C.); (L.Z.); (L.-X.G.)
| | - Guo-Dong Zhang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China; (W.-J.H.); (Q.-Q.X.); (H.-T.P.); (H.-Y.C.); (Y.-X.Q.); (Z.-Y.C.); (L.Z.); (L.-X.G.)
- Correspondence: (G.-D.Z.); (L.-C.T.)
| | - Li Zhao
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China; (W.-J.H.); (Q.-Q.X.); (H.-T.P.); (H.-Y.C.); (Y.-X.Q.); (Z.-Y.C.); (L.Z.); (L.-X.G.)
| | - Li-Xiu Gong
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China; (W.-J.H.); (Q.-Q.X.); (H.-T.P.); (H.-Y.C.); (Y.-X.Q.); (Z.-Y.C.); (L.Z.); (L.-X.G.)
| | - Chang-Guo Xue
- School of Material Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China;
| | - Long-Cheng Tang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China; (W.-J.H.); (Q.-Q.X.); (H.-T.P.); (H.-Y.C.); (Y.-X.Q.); (Z.-Y.C.); (L.Z.); (L.-X.G.)
- Key Laboratory of Silicone Materials Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
- Correspondence: (G.-D.Z.); (L.-C.T.)
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Shi J, Liu Z, Zhao N, Liu S, Li Z. Controlled Ring-Opening Polymerization of Hexamethylcyclotrisiloxane Catalyzed by Trisphosphazene Organobase to Well-Defined Poly(dimethylsiloxane)s. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02654] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jinfeng Shi
- Key Laboratory of Biobased Polymer Materials, Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Zhengyang Liu
- Key Laboratory of Biobased Polymer Materials, Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Na Zhao
- Key Laboratory of Biobased Polymer Materials, Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Shaofeng Liu
- Key Laboratory of Biobased Polymer Materials, Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Zhibo Li
- Key Laboratory of Biobased Polymer Materials, Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
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7
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Yu. Moskalik M, Garagan IA, Ganin AS, Astakhova VV, Sterkhova IV, Shainyan BA. Oxidative sulfonamidation of O-containing vinylsilanes. A new route to novel heterocycles and amidines. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.122010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Shi J, Zhao N, Xia S, Liu S, Li Z. Phosphazene superbase catalyzed ring-opening polymerization of cyclotetrasiloxane toward copolysiloxanes with high diphenyl siloxane content. Polym Chem 2019. [DOI: 10.1039/c9py00247b] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
PDMS-ran-PDPS copolysiloxanes with varying diphenyl siloxane contents (up to 64 mol%) are readily prepared by phosphazene catalyzed ROP.
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Affiliation(s)
- Jinfeng Shi
- Key Laboratory of Biobased Polymer Materials
- Shandong Provincial Education Department; College of Polymer Science and Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- China
| | - Na Zhao
- Key Laboratory of Biobased Polymer Materials
- Shandong Provincial Education Department; College of Polymer Science and Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- China
| | - Shuang Xia
- Institute of Chemical Materials
- China Academy of Engineering Physics
- Mianyang 621900
- China
| | - Shaofeng Liu
- Key Laboratory of Biobased Polymer Materials
- Shandong Provincial Education Department; College of Polymer Science and Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- China
| | - Zhibo Li
- Key Laboratory of Biobased Polymer Materials
- Shandong Provincial Education Department; College of Polymer Science and Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- China
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9
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Fei HF, Han X, Liu B, Gao X, Wang Q, Zhang Z, Xie Z. Mechanism of the antioxidation effect of α-Fe2O3 on silicone rubbers at high temperature. RSC Adv 2016. [DOI: 10.1039/c5ra23795e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The high temperature resistance of silicone rubber (SR) could be significantly improved by adding hematite (α-Fe2O3).
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Affiliation(s)
- Hua-Feng Fei
- Laboratory of Advanced Polymer Materials
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Xiaojie Han
- Laboratory of Advanced Polymer Materials
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Bozheng Liu
- Laboratory of Advanced Polymer Materials
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Xiyin Gao
- Laboratory of Advanced Polymer Materials
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Qian Wang
- Laboratory of Advanced Polymer Materials
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Zhijie Zhang
- Laboratory of Advanced Polymer Materials
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Zemin Xie
- Laboratory of Advanced Polymer Materials
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
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