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Zhou D, Lu M, Liang L, Shen T, Xiao W. Curing behavior of Azo-containing twin liquid crystalline epoxy resins with anhydride. POLYM ENG SCI 2012. [DOI: 10.1002/pen.22073] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Ke L, Hu D, Lu Y, Feng S, Xie Y, Xu W. Copolymerization of maleimide-based benzoxazine with styrene and the curing kinetics of the resultant copolymer. Polym Degrad Stab 2012. [DOI: 10.1016/j.polymdegradstab.2011.11.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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3
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Zhou DW, Liang LY, Lu MG. Dimeric liquid crystalline thermosets from azo-containing diglycidyl ether cured by anhydride. Polym Bull (Berl) 2010. [DOI: 10.1007/s00289-010-0401-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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4
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Yu Y, Wang M, Foix D, Li S. Rheological Study of Epoxy Systems Blended with Poly(ether sulfone) of Different Molecular Weights. Ind Eng Chem Res 2008. [DOI: 10.1021/ie800845p] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yingfeng Yu
- The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, Department of Macromolecular Science, Fudan University, Shanghai, 200433, China, and Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, Macel.li Domingo s/n, 43007 Tarragona, Spain
| | - Minghai Wang
- The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, Department of Macromolecular Science, Fudan University, Shanghai, 200433, China, and Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, Macel.li Domingo s/n, 43007 Tarragona, Spain
| | - David Foix
- The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, Department of Macromolecular Science, Fudan University, Shanghai, 200433, China, and Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, Macel.li Domingo s/n, 43007 Tarragona, Spain
| | - Shanjun Li
- The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, Department of Macromolecular Science, Fudan University, Shanghai, 200433, China, and Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, Macel.li Domingo s/n, 43007 Tarragona, Spain
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Meng FB, Jiao Lian, Chen HB, Gao YM, Zhang BY. Cholesteric Liquid-Crystalline Thermosets Derived from Side-Chain Liquid-Crystalline Epoxy Oligomers. HIGH PERFORM POLYM 2008. [DOI: 10.1177/0954008307086682] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A series of side-chain liquid crystalline (LC) oligomers bearing glycidyl ether groups were synthesized with cholest-5-en-3-ol(3 β)-4-(2-propenyloxy) benzoate, octyl 4-(4-allyloxy-benzoyloxy)-benzoate and epoxy monomer allyl glycidyl ether. The chemical structures and LC properties of the monomers and oligomers were characterized by use of various experimental techniques. All the chiral LC oligomers showed cholesteric mesophase with very wide mesophase temperature ranges. All the synthesized LC oligomers were cured with 4,4'-diaminodiphenylmethane at the same curing conditions. The thermal behaviors, mesomorphic phase and optical properties of the thermosets were characterized. The synthesized thermosets have high thermal stability. The cholesteric phases of LC oligomers were frozen in the polymer networks. Compared with those of corresponding oligomers, the reflection located at wide angles of thermosets became more diffuse, and the peak intensity decreased in X-ray diffraction analysis. The selective light reflection maximum λmax of the thermosets at room temperature shifted slightly to short wavelengths as the LC monomer bearing cholesteryl component was increased, indicating that the helical pitch P becomes shorter due to more chiral groups in the polymer network systems. The temperature dependences of both reflection wavelength and optical rotation under the influence of the crosslinking reaction were also investigated.
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Affiliation(s)
- Fan-Bao Meng
- Research Centre for Molecular Science and Engineering, Northeastern University, Shenyang, 110004, China
| | - Jiao Lian
- Research Centre for Molecular Science and Engineering, Northeastern University, Shenyang, 110004, China
| | - Hai-Bin Chen
- Research Centre for Molecular Science and Engineering, Northeastern University, Shenyang, 110004, China
| | - Yong-Mei Gao
- Research Centre for Molecular Science and Engineering, Northeastern University, Shenyang, 110004, China
| | - Bao-Yan Zhang
- Research Centre for Molecular Science and Engineering, Northeastern University, Shenyang, 110004, China,
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Yu Y, Gan W, Liu X, Li S. Liquid crystalline epoxy resin modified cyanate ester/epoxy resin systems. J Appl Polym Sci 2008. [DOI: 10.1002/app.28358] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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7
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Synthesis and mesomorphic properties of cholesteric elastomers based on chiral mesogenic crosslinking agent. J Appl Polym Sci 2007. [DOI: 10.1002/app.26785] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ribera D, Giamberini M, Serra A, Mantecón A. Lightly crosslinked, mesomorphic networks obtained through the reaction of dimeric, liquid-crystalline epoxy–imine monomers and heptanedioic acid. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/pola.21681] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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9
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Hu JS, Zhang BY, Tian M, Ren SC, Guo DY. Mesomorphic properties of side-chain cholesteric liquid-crystalline elastomers. Colloid Polym Sci 2005. [DOI: 10.1007/s00396-005-1338-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Hu JS, Zhang BY, Zhou AJ, Dong YL, Zhao ZX. Preparation and phase behavior of side-chain cholesteric liquid-crystalline elastomers. ACTA ACUST UNITED AC 2005. [DOI: 10.1002/pola.20784] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Hu JS, Zhang BY, Guan Y, He XZ. Side-chain cholesteric liquid-crystalline elastomers derived from smectic crosslinking units: Synthesis and phase behavior. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/pola.20390] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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12
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Liu YL, Yu JM, Chou CI. Preparation and properties of novel benzoxazine and polybenzoxazine with maleimide groups. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/pola.20428] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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