Search results for: Jalpa V. Chopda

Items from 1 to 4 out of 4 results

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Synthesis and spectral analysis of (E)-1-(2,4-dihydroxy phenyl)-3-(4-hydroxyphenyl) prop-2-en-1-one

Jalpa V. Chopda, Jignesh P. Patel, Parsotam H. Parsania

World News of Natural Sciences > 2023 > 46 > 46-52

Multifunction chalcone: (E)-1-(2,4-dihydroxy phenyl)-3-(4-hydroxyphenyl)prop-2-en-1-one (THCH) was synthesized by reacting a 0.01 mol 2,4-dihydroxy acetophenone, and a 0.01 mol 4-hydroxybenzaldehyde using 10 ml of 60% aq. sodium hydroxide as a catalyst and 25 ml of ethanol as a solvent at reflux temperature for 3h. The THCH was crystallized using a water-methanol system. The structure of THCH was...

article

Synthesis, spectral and thermal study of (2E, 6E) 2,6-bis(4-hydroxy benzylidene)-4-R-cyclohexanone

Dharmesh B. Sankhavara, Jalpa V. Chopda, Jignesh P. Patel, P. H. Parsania

World Scientific News > 2019 > 123 > 141-160

(2E,6E) 2,6-Bis(4-hydroxybenzalidene)-4-R-cyclohexanone (BHBC, R = H and MBHBC, R = CH3) was synthesized by condensing cyclohexanone/4-methylcyclohexanone with 4-hydroxy benzaldehyde using mixture of boric acid and hydrochloric acid as a catalyst at 60-70 ºC for 1 h. The structures of BHBC and MBHBC are supported by FTIR, 1HNMR, 13CNMR and MS techniques. DSC endothermic transition at 282.48 ºC (BHBC)...

article

Preparation and performance evaluation of jute and glass composites of epoxy resin of (2E,6E)-2,6-bis (4-hydroxy benzylidene)-4-methylcyclohexanone

Jalpa V. Chopda, Dharmesh B. Sankhavara, Jignesh P. Patel, P. H. Parsania

World Scientific News > 2019 > 129 > 23-39

Jute and glass composites were prepared by compressing molding technique at 150C for 3h under 20 MPa pressure. J-EMBHBC-DDS, J-EMBHBC-THPA, G-EMBHBC-DDS and G-EMBHBC-THPA showed 15, 15.1, 58.3 and 18.7 MPa tensile strength, respectively. J-EMBHBC-DDS and J-EMBHBC-THPA showed 22.9 and 19.4 MPa flexural strength, respectively. J-EMBHBC-DDM and G-EMBHBC-DDM showed 1.6×109 and 1.2×1012 ohm cm volume...

article

Effect of temperature and solvents on ultrasonic speed and thermo-acoustic parameters of epoxy resin of (2E, 6E)-bis (4-hydroxy benzylidene)-4-methylcyclohexanone solutions at four different temperatures

Jalpa V. Chopda, Dharmesh B. Sankhavara, Jignesh P. Patel, P. H. Parsania

World Scientific News > 2019 > 131 > 222-241

The density (), viscosity () and ultrasonic speed (U) of 1, 4-dioxane (DO), tetrahydrofuran (THF), chloroform (CF) and solutions (0.25-5 wt%) of epoxy resin of (2E, 6E)-bis(4-hydroxy benzylidene)-4-methylcyclohexanone have been investigated at 298, 303, 308 and 313 K to understand molecular interactions in solutions of different polarity. Various acoustical and thermodynamic activation parameters...

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Search results for: Jalpa V. Chopda

Synthesis and spectral analysis of (E)-1-(2,4-dihydroxy phenyl)-3-(4-hydroxyphenyl) prop-2-en-1-one

Synthesis, spectral and thermal study of (2E, 6E) 2,6-bis(4-hydroxy benzylidene)-4-R-cyclohexanone

Preparation and performance evaluation of jute and glass composites of epoxy resin of (2E,6E)-2,6-bis (4-hydroxy benzylidene)-4-methylcyclohexanone

Effect of temperature and solvents on ultrasonic speed and thermo-acoustic parameters of epoxy resin of (2E, 6E)-bis (4-hydroxy benzylidene)-4-methylcyclohexanone solutions at four different temperatures

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