Photo-induced synthesis and characterization of poly(methyl methacrylate) grafted sodium salt of partially carboxymethylated guar gum

Trivedi, Jignesh; Thaker, M. D.; Trivedi, H. C.

doi:10.1007/s10118-014-1544-4

Cited by 11 publications

(13 citation statements)

References 26 publications

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“…8 and 9 that the weight loss occurred below 100°C may be caused by volatilization of the moisture. The weight loss at~300°C may be ascribed to the BMA homopolymer segment [42][43]. Thermal decomposition of the BAM/AM (co)polymers began at~350°C.…”

Section: Dsc and Tga Analysesmentioning

confidence: 97%

The molecular structure control of butyl methacrylate/acrylamide (co)polymers

et al. 2015

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Section: Dsc and Tga Analysesmentioning

confidence: 97%

The molecular structure control of butyl methacrylate/acrylamide (co)polymers

et al. 2015

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“…The values of the grafting yields (%G and %GE) and the rate of polymerization (R p ) were calculated by using the following expressions [20] :…”

Section: Grafting Yields and Kinetic Parametermentioning

confidence: 99%

Synthesis and Characterization of Photo‐Graft Copolymers of Sodium Salt of Partially Carboxymethylated Tamarind Kernel Powder

Trivedi

Joshi

Trivedi

2021

Macromolecular Symposia

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In the present case, the functionalization of sodium salt of partially carboxymethylated tamarind kernel powder (Na-PCMTKP, DS= 0.15), an industrially important natural polymer, is carried out through photo-graft copolymerization of methyl methacrylate (MMA) and ethyl methacrylate (EMA) onto it using ceric ammonium nitrate (CAN) as a photo-initiator. The effects of the concentrations of photo-initiator (CAN), nitric acid, methacrylate monomers (MMA and EMA) and the amount of Na-PCMTKP as well as reaction time and temperature on photo-graft copolymerization are being investigated to achieve the maximum graft yields (%G = 232.2 and %GE = 91.0 in the case of MMA and %G = 206.2 and %GE = 90.0 in the case of EMA). A suitable mechanism to explain the photo-graft copolymerization is being proposed. The kinetics aspect of the photo-graft copolymerization is also studied and the values of the overall activation energy for the photo-graft copolymerization in the case of MMA and EMA are found to be 8.10 and 10.49 kJ mol −1 , respectively. Besides kinetics study, the chemical structure and thermal properties of the graft copolymers of Na-PCMTKP containing PMMA and PEMA is studied by FTIR, TGA, and SEM techniques and the results ascertains the evidence of the successful photo-graft copolymerization of both the methacrylate monomers onto Na-PCMTKP. The synthesized novel graft copolymers may find their potential applications to be used as metal adsorbents as well as novel excipients for direct compression matrix tablets.

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“…Sodium alginate is a linear polysaccharide derived from alginic acid composed of 1,4-β-d-mannuronic acid (M) and α-1-guluronic acid (G) [ 4 , 5 ]. Alginate has an abundance of free hydroxyl and carboxyl groups distributed along the main chain; these two functional groups have the capacity for chemical modification such as oxidation, sulphation, esterification, or grafting methods [ 6 , 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a Biodegradable Polymer of Poly (Sodium Alginate/Ethyl Acrylate)

et al. 2021

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The objective of the study was to obtain a new biodegradable graft polymer by performing two chemical processes: first, a transesterification reaction between carboxylic acid’s salt and ethyl acrylate’s ester, followed by polymerization of the vinyl group from the ethyl acrylate monomer via free radicals. The copolymer’s FTIR shows an absence of ethyl bands, while the characteristic band of pyranose is maintained, which confirms the monomer’s graft. TGA analysis shows that sodium alginate had three decomposition temperatures: 103 °C due to dehydration, 212 °C associated with the destruction of glycosidic bonds, and 426 °C due to conversion of alginate into Na2CO3. The copolymer presents four processes at different temperatures, i.e., evaporation of alcohol at 65 °C, decomposition of ungrafted alginate at 220 °C, copolymer decomposition at 298 °C, and degradation of fragments into carbonate at 423 °C. The evaluation of the action of fungal growth on the copolymer was higher than 50%, which means it is an excellent material to be biodegraded.

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Photo-induced synthesis and characterization of poly(methyl methacrylate) grafted sodium salt of partially carboxymethylated guar gum

Cited by 11 publications

References 26 publications

The molecular structure control of butyl methacrylate/acrylamide (co)polymers

The molecular structure control of butyl methacrylate/acrylamide (co)polymers

Synthesis and Characterization of Photo‐Graft Copolymers of Sodium Salt of Partially Carboxymethylated Tamarind Kernel Powder

Synthesis of a Biodegradable Polymer of Poly (Sodium Alginate/Ethyl Acrylate)

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