Search results for: Parsotam H. Parsania

Items from 1 to 13 out of 13 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, the spectral and thermal analysis of (2E,5E)2,5-bis(3R,5R-4-hydroxy benzylidene)cyclopentanone

Dharmesh B. Sankhavara, Jignesh P. Patel, Parsotam H. Parsania

World Scientific News > 2022 > 174 > 161-176

(2E,5E)2,5-Bis(3R,5R-4-hydroxy benzylidene)cyclopentanone (BHCP: R=H and BrBHCP: R=Br) was synthesized by reacting 4-hydroxybenzaldehyde with cyclopentanone using boric acid (in hydrochloric acid) as a catalyst at 60-70 °C for 1h. BHCP was brominated in glacial acetic acid at reflux temperature for 1h. The structures of BHCP and BrBHCP were supported by spectral techniques: UV-Visible, FTIR, 1HNMR,...

article

Potential comparison of montmorillonite filled and unfilled epoxy methacrylate of bisphenol-C-glass/ jute/treated jute and hybrid composites

Ritesh D. Bhatt, Jignesh P. Patel, Parsotam H. Parsania

World Scientific News > 2021 > 158 > 227-246

Montmorillonite filled and unfilled controls, jute/treated jute/glass/hybrid composites were prepared at room temperature for three h and under 5 MPa pressure. The composites were post cured at 150 °C for 30 min. A 40% styrene was used as a reactive diluent, and 1% methylethylketone peroxide, 1.5 % cobalt octoate, and 1.5% dimethylaniline were used as initiator and accelerator, and a promoter. Filled...

article

Synthesis of Bisphthalamic Acids for the Preparation of Glass‐Reinforced Composites of Multifunctional Epoxy Resin of Bisphenol‐C and Their Physicochemical Properties

Jignesh P. Patel, Parsotam H. Parsania

Advances in Polymer Technology > 37 > 1 > 275 - 280

Bisphthalamic acids of tetrahydrophthalic anhydride (THPA), tetrachlorophthalic anhydride (TCPA), tetrabromophthalic anhydride (TBPA), and 4,4′‐diamino diphenylsulfone (DDS), 4,4′‐diaminodiphenylether (DDE), and 4,4′‐diaminodiphenyl methane (DDM) were synthesized and used as hardeners for multifunctional epoxy resin of bisphenol‐C(EBCF). Glass‐reinforced composites (G‐EBCF‐THPA, G‐EBCF‐TCPA, G‐EBCF‐TBPA,...

article

Dynamic DSC curing kinetics and thermogravimetric study of epoxy resin of 9,9′-bis(4-hydroxyphenyl)anthrone-10

Jabal D. Thanki, Parsotam H. Parsania

Journal of Thermal Analysis and Calorimetry > 2017 > 130 > 3 > 2145-2156

Dynamic DSC curing kinetics of epoxy resin of 9,9′-bis(4-hydroxyphenyl) anthrone-10 (EAN) was carried out at 5, 10, 15 and 20 °C min⁻¹ heating rates in nitrogen atmosphere using 4,4′-diaminodiphenylsulfone (DDS), 4,4′-diaminodiphenylmethane (DDM) and tetrahydrophthalicanhydride (THPA) hardeners. Peak exotherms shifted toward higher temperature range with increasing heating rate. DSC data were analyzed...

article

Fabrication and comparative mechanical, electrical and water absorption characteristic properties of multifunctional epoxy resin of bisphenol-C and commercial epoxy-treated and -untreated jute fiber-reinforced composites

Jignesh P. Patel, Parsotam H. Parsania

Polymer Bulletin > 2017 > 74 > 2 > 485-504

Epoxy resin of bisphenol-C-formaldehyde (EBCF) was synthesized and its structure was confirmed by FTIR and ¹HNMR techniques. Untreated jute and a 4 % sodium hydroxide-treated jute composites of EBCF, araldites (GY508 and GY6010) and their hybrid composites were fabricated by hand layup technique followed by compression-molding technique. Mechanical, electrical and water absorption behavior of the...

article

Syntheses of hexafunctional epoxy resin of bisphenol-C-formaldehyde and unsaturated polyester resin for the fabrication of jute and glass hybrid composites and evaluation of mechanical, electrical and water absorption characteristic properties

Jignesh P. Patel, Parsotam H. Parsania

World Scientific News > 2016 > 44 > 112-122

Hexafunctional epoxy resin of bisphenol-C-formaldehyde (HEBCF) and unsaturated polyester resin of maleic anhydride and propylene glycol (PER) were synthesized and used for the preparation of jute and glass hybrid composites. The composites were prepared by hand layup followed by compression molding technique. Both types of the hybrid composites possess good mechanical properties. G-HEBCF-PER possesses...

article

Comparative Study of White Jute and Jute Felt Composites of Tetra Functional Epoxy Resin and Araldites

Jignesh P. Patel, Parsotam H. Parsania

World Scientific News > 2016 > 45 > 2 > 63-79

White jute and jute felt fiber reinforced composites of tetra functional epoxy resin of bisphenol-C-formaldehyde (EBCF), araldites (GY508 and GY6010) and their hybrid composites were fabricated by hand layup followed by compression molding technique. White jute based composites showed somewhat better mechanical and electrical properties than those of jute felt based composites mainly due to different...

article

Synthesis and physicochemical studies of jute and glass composites of styrenated vinyl esters of multifunctional epoxy resin containing s‐triazine ring

Rizwan Y. Ghumara, Pooja P. Adroja, Parsotam H. Parsania

Polymer Composites > 37 > 1 > 279 - 287

Acrylated and methacrylated resins of multifunctional epoxy resin of 2,4,6‐tris(4‐hydroxyphenyl)‐1‐3‐5‐triazine (ETPAA/ETPMA) have been synthesized and characterized by IR, NMR, and thermal techniques. Jute and glass composites of styrenated vinyl esters have been prepared by hand layup technique and characterized for their mechanical and electrical properties. Vinyl esters possess high solubility...

article

Studies on Bismaleamic Acids Cured Tetrafunctional Epoxy Resin of Bisphenol‐C and Glass‐Epoxy Composites

Jignesh P. Patel, Ritesh D. Bhatt, Parsotam H. Parsania

Advances in Polymer Technology > 33 > S1 > n/a - n/a

The tetrafunctional epoxy resin of bisphenol‐C was cured using bismaleamic acids of maleicanhydride and 4,4'‐diaminodiphenylsulfone, 4,4'‐diaminodiphenylether, and 4,4'‐diaminodiphenylmethane and characterized by infrared, differential scanning calorimetric, and thermogravimetric analysis. Cured resins showed endothermic transition at about 229–248°C, which supplemented decomposition reactions. Cured...

article

Synthesis and physicochemical study of polyester polyols of epoxy resin of 2,4,6‐tris(4‐hydroxyphenyl)‐1,3,5‐triazine and their polyurethanes

Rizwan Y. Ghumara, Jignesh P. Patel, Pooja P. Adroja, Parsotam H. Parsania

Journal of Applied Polymer Science > 131 > 9 > n/a - n/a

Polyester polyols of ricinoleic acid (ETPRA), oleic acid, linoleic acid (ETPLA), and rosin (ETPR) and epoxy resin of 2,4,6‐tris(4‐hydroxyphenyl)‐1‐3‐5‐triazine (ETP) and their polyurethanes (PUs) were synthesized and characterized by Fourier transform infrared spectroscopy, NMR, differential scanning calorimetry, and thermogravimetric analysis techniques. The PU films showed the following density...

article

Spectral and Thermal Behavior of Aromatic and Aliphatic Amines Cured Cardo Group Containing Multifunctional Epoxy Resin

Jignesh P. Patel, Parsotam H. Parsania

Advances in Polymer Technology > 33 > 2 > n/a - n/a

Multifunctional cardo epoxy resin (EBCF) was cured by using 3,3′‐diaminodiphenylsulfone, 4,4′‐diaminodiphenylsulfone, 4,4′‐diaminodiphenyl ether, 4,4′‐diaminodiphenylmethane, 1,4‐phenylenediamine, triethylamine, and diethylenetriamine as hardeners at 120°C for 15–60 min (gel time), and were post cured at 140°C for 80–90 min. Cured samples were found insoluble in common solvents. Cured and uncured...

article

Dynamic DSC curing kinetic study of epoxy resin of 1,3‐bis(4‐hydroxyphenyl) prop‐2‐en‐1‐one using aromatic diamines and phthalic anhydride

Pooja P. Adroja, Rizwan Y. Ghumara, Parsotam H. Parsania

Journal of Applied Polymer Science > 130 > 1 > 572 - 578

Epoxy resin of 1,3‐bis(4‐hydroxyphenyl)prop‐2‐en‐1‐one has been synthesized and studied its cure kinetics by differential scanning calorimetry at four different heating rates in nitrogen atmosphere and varying proportions of 4,4′‐diaminodiphenyl ether, 4,4′‐diaminodiphenyl sulfone and phthalic anhydride. The energy of activation (E_a) and pre‐exponential factor (A) has been determined according to...

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