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Govindraj Latha, Mydeen K M, Hariharan A, Balaji K, Murugavel SC. Synthesis, Spectral and Thermal Characterization of 1,1-Bis(4-hydroxyphenyl)cyclohexane (BPZ)/1,1-Bis(4-hydroxyphenyl)-4-methylcyclohexane (MBPZ) Cardo Copolyesters. POLYMER SCIENCE SERIES B 2022. [DOI: 10.1134/s1560090422700129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Athianna Muthusamy, Balaji K, Murugavel SC, Yuan C, Dai L. Synthesis and Characterization of Liquid Crystalline Polyesters Containing α,β-unsaturated Ketone Moiety in the Main Chain Derived from 2,6-bis(4-hydroxybenzylidene)cyclohexanone. POLYMER SCIENCE SERIES B 2020. [DOI: 10.1134/s1560090420030112] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Vini R, Murugavel SC. Photoisomerization and thermal degradation kinetics of poly(ether–ester)s containing azomethine moiety in the main chain. HIGH PERFORM POLYM 2019. [DOI: 10.1177/0954008319850614] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Poly(ether–ester)s containing azomethine group in the main chain were synthesized by solution polycondensation of 4,4′-bis(3-hydroxypropyloxy)- N-benzylidene aniline with adipoyl and terephthaloyl diacid chlorides. The synthesized poly(ether–ester)s were characterized by Fourier transform infrared and proton, and carbon-13 nuclear magnetic resonance spectroscopic techniques. Thermal properties were studied using thermogravimetric analysis (TGA) and differential scanning calorimetry. Thermal degradation kinetics of poly(ether–ester)s were characterized by TGA at various heating rates (5°C min−1, 10°C min−1, and 20°C min−1). The apparent activation energy for the degradation of both the polymers was determined by three different non-isothermal model-free kinetics methods (Friedmann, Flynn–Wall Ozawa, and Kissinger–Akahira–Sunose). The photoisomerization property was examined with ultraviolet (UV) spectroscopy, and the polymer PEE1 showed a rate of trans to cis isomerization ranging 10–20 s, whereas reverse process took around 100 min in solution. UV studies suggested that this material may be used in the field of rewritable applications.
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Affiliation(s)
- R Vini
- Polymer Research Laboratory, Chemistry Division, Department of Applied Science, PSG College of Technology, Coimbatore, Tamil Nadu, India
| | - SC Murugavel
- Polymer Research Laboratory, Chemistry Division, Department of Applied Science, PSG College of Technology, Coimbatore, Tamil Nadu, India
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Moorthy N, Murugavel SC. Synthesis, characterization and photo – switching properties of azobenzene mesogen containing poly (ether - ester) s from cashew nut shell liquid. JOURNAL OF POLYMER RESEARCH 2018. [DOI: 10.1007/s10965-018-1449-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Latha G, Murugavel SC. Synthesis and characterization of cardo poly(ether-ester)s containing 1,1-bis (4-hydroxyphenyl) cyclohexane in the main chain. Polym Bull (Berl) 2016. [DOI: 10.1007/s00289-016-1652-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Lim WL, Oo CW, Choo YSL, Looi ST. New generation of photosensitive poly(azomethine)esters: Thermal behaviours, photocrosslinking and photoluminescence studies. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.06.041] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Lim WL, Oo CW, Kobayashi T. Photoluminescent enhancement of polyesters via photocrosslinking. J Appl Polym Sci 2014. [DOI: 10.1002/app.41504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wan Leng Lim
- School of Chemical Sciences, Universiti Sains Malaysia; 11800 USM Penang Malaysia
- Department of Materials Science and Technology; Nagaoka University of Technology; 1603-1 Kamitomioka Nagaoka Niigata 940-2188 Japan
| | - Chuan Wei Oo
- School of Chemical Sciences, Universiti Sains Malaysia; 11800 USM Penang Malaysia
| | - Takaomi Kobayashi
- Department of Materials Science and Technology; Nagaoka University of Technology; 1603-1 Kamitomioka Nagaoka Niigata 940-2188 Japan
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Latha G, Natarajan M, Balaji K, Murugavel SC. Synthesis, spectral and thermal characterization of polyester derived from 1,1-bis(4-hydroxyphenyl)cyclohexane. HIGH PERFORM POLYM 2013. [DOI: 10.1177/0954008313501181] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A series of polyesters with pendant cyclohexane ring as a cardo group were synthesized by reacting 1,1-bis(4-hydroxyphenyl)cylcohexane (bisphenol-Z (BPZ)) with diacid chlorides. The molecular structures of the monomer and polymers were confirmed by spectral analyses. Thermal properties were studied using thermogravimetric analysis and differential scanning calorimetry. The thermogravimetric data revealed that the polymers are stable up to 190°C and start to degrade thereafter. The thermal stability initially increases with increase in spacer length and then decreases due to negative effects of the spacer. In the present study, Arrhenius, Broido and Horowitz–Metzger models have been used to calculate the degradation kinetic parameters.
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Affiliation(s)
- G. Latha
- Department of Chemistry, Hindusthan College of Engineering and Technology, Coimbatore, Tamil Nadu, India
| | - M. Natarajan
- Polymer Research Laboratory, Department of Basic Sciences – Chemistry, PSG College of Technology, Coimbatore, Tamil Nadu, India
| | - K. Balaji
- Department of Chemistry and Applied Chemistry, PSG College of Technology, Coimbatore, Tamil Nadu, India
| | - S. C. Murugavel
- Polymer Research Laboratory, Department of Basic Sciences – Chemistry, PSG College of Technology, Coimbatore, Tamil Nadu, India
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