Synthesis and characterization of cardo poly(ether-ester)s containing 1,1-bis (4-hydroxyphenyl) cyclohexane in the main chain

Latha, G.; Murugavel, S. C.

doi:10.1007/s00289-016-1652-0

Cited by 9 publications

(4 citation statements)

References 30 publications

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“…To this solution anhydrous potassium carbonate (12.5 mmol) was added. 46,47 Immediately, a change in color from yellow to red was observed as an indication of the formation of anion. The mixture was heated to 80°C with constant stirring and 3-bromo-1-propanol (10 mmol) was added dropwise to this mixture.…”

Section: Methodsmentioning

confidence: 99%

Photoisomerization and thermal degradation kinetics of poly(ether–ester)s containing azomethine moiety in the main chain

Vini

Murugavel

2019

High Performance Polymers

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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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Section: Methodsmentioning

confidence: 99%

Photoisomerization and thermal degradation kinetics of poly(ether–ester)s containing azomethine moiety in the main chain

Vini

Murugavel

2019

High Performance Polymers

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“…12,13 However, in practical applications, improving the solubility of polyarylates and improving their processing properties are still the direction of continuous research today. 14,15 There have been many reports on how the properties of polymers could be enhanced by introducing bulky side groups, 16 flexible chains 17 and asymmetric groups 18 into the polymer backbone. The introduction of bulky side groups such as benzenesulfonyl, 19 biphenyl side groups 20 and naphthyl groups 21,22 into the polyarylates spine effectively improve the solubility and thermal stability of polymers.…”

Section: Introductionmentioning

confidence: 99%

Study on the synthesis of soluble copolymer polyarylate from asymmetric bisphenol A derivative (2,2‐bis(4‐hydroxyphenyl)butane/9,9‐bis(4‐hydroxyphenyl)fluorene) monomer

Wang

Liu

Wang

et al. 2023

J of Applied Polymer Sci

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A series of polyarylates composed of different bisphenol monomers were synthesized by interfacial polymerization using 9,9‐bis(4‐hydroxyphenyl)fluorene (BHPF), 2,2‐bis(4‐hydroxyphenyl)butane (BPB), terephthaloyl chloride (TPC), and isophthaloyl chloride (IPC) as raw materials. The DFT calculations showed that the energy required for the reaction of BHPF with TPC/IPC was between 15.82 and 16.04 Kcal/mol, which was higher than the energy required for the reaction of BPB with TPC/IPC of 8.05–8.40 Kcal/mol. The solubility test showed that the solubility of BHPF‐BPB‐type polyarylate was better than that of BPB‐type polyarylate in various organic solvents with Tg ranging from 199.3 to 215.0°C, indicating that the solubility was improved while increasing the Tg of the products. The weight loss (T5%) and maximum weight loss (Tmax) of BHPF‐BPB‐type polyarylates under N2 atmosphere ranged from 464.6–489.4°C and 521.7–534.6°C, indicating good thermal stability. The tensile strength of the BHPF‐BPB‐type polyarylates ranged from 53.21 to 61.23 MPa, Young's modulus ranged from 1479.66 to 1867.23 MPa and elongation at break ranged from 19.5% to 30.1%. The mechanical property test showed that the BHPF‐BPB‐type polyarylates have high tensile strength. These characteristics indicate that BHPF‐BPB‐type polyarylates have a very broad potential for application in engineering plastics.

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“…Aromatic polymers containing the ether and amide side groups showed improved solubility and thermal stability [17]. To achieve these properties in high-performance polymers, various flexible ether linkages were incorporates to yield poly(ether ester)s and poly(ether amide)s [18,19]. High-molecular-weight terephthalate copolyesters from flexible cycloaliphatic diols or diacids displayed a coherent structure-property relationship related to the rigid, flexible, and bulky structures [20,21].…”

Section: Introductionmentioning

confidence: 99%

Aromatic Polyesters Containing Ether and a Kinked Aromatic Amide Structure in the Main Chain: Synthesis and Characterisation

Deokar¹,

Joshi

Tamboli

et al. 2022

Coatings

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A novel bisphenol containing preformed multiple ether and amide linkages, N, N′-Bis (4-hydroxyphenoxyphenylene) isophthalamide (IPCD), was prepared and analysed by spectroscopic methods. New aromatic polyesters were prepared by polycondensation of IPCD with 1, 3-benzene diacidchloride and/or 1, 4-benzene diacidchloride. These obtained polyesters were structurally analysed by infra-red spectroscopy, measurements of inherent viscosity, wide-angle X-ray diffraction patterns, and thermal techniques such as differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and solubility tests in organic solvents. The synthesised polyesters had high molecular weights, as indicated by their inherent viscosities from 0.67 to 0.78 dL/g in N-methyl-2-pyrrolidone. The incorporation of ether and kinked aromatic amide moieties in the main polyester chains greatly affected the properties of these aromatic polyesters. The prepared polyesters readily dissolved in amide-type polar aprotic solvents and pyridine, indicating their solution processability. The DSC curves above the polyesters showed glass transition temperatures of 194 to 269 °C. TGA indicated that these newly obtained polyesters were stable up to 301 °C and retained a 39 to 48% weight at 900 °C. W-XRD analyses showed that the newly synthesised polyesters were amorphous, which is reflected in their solubility behaviour.

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Synthesis and characterization of cardo poly(ether-ester)s containing 1,1-bis (4-hydroxyphenyl) cyclohexane in the main chain

Cited by 9 publications

References 30 publications

Photoisomerization and thermal degradation kinetics of poly(ether–ester)s containing azomethine moiety in the main chain

Photoisomerization and thermal degradation kinetics of poly(ether–ester)s containing azomethine moiety in the main chain

Study on the synthesis of soluble copolymer polyarylate from asymmetric bisphenol A derivative (2,2‐bis(4‐hydroxyphenyl)butane/9,9‐bis(4‐hydroxyphenyl)fluorene) monomer

Aromatic Polyesters Containing Ether and a Kinked Aromatic Amide Structure in the Main Chain: Synthesis and Characterisation

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