Grafting of polyacrylonitrile onto guar gum under microwave irradiation

Singh, Vandana; Tiwari, Ashutosh; Tripathi, Devendra Narayan; Sanghi, Rashmi

doi:10.1002/app.20099

Cited by 90 publications

(51 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The counter reading at peak intensity at 22˚ is said to represent the crystalline material and the peak intensity at 18˚ corresponds to the amorphous material in cellu lose [11][12]. Percentage Crystallin ity [13] and crystalline index [14][15] were calculated as follow:…”

Section: Xrd Analysismentioning

confidence: 99%

Effect of Mercerization and Benzoyl Peroxide Treatment on Morphology, Thermal Stability and Crystallinity of Sisal Fibers

Kaushik¹,

Kumar²,

Kalia³

2013

TEXTILE

107

View full text Add to dashboard Cite

Studies on the use of natural fibers as replacement to man-made fiber in fiber-reinforced co mposites have increased and opened up further industrial possibilities. Natural fibers have the advantages of low density, low cost, and biodegradability. However, the main d isadvantages of natural fibers in co mposites are the poor co mpatibility between fiber and matrix and the relative high mo isture sorption. Therefore, chemical treat ments are considered in modify ing the fiber surface properties. In this study, Sisal fibers were modified using alkali and benzoyl pero xide solution of different concentration for different time intervals. Morphological changes, thermal stability and crystallinity of fibers were investigated using scanning electron microscope (SEM), TGA and XRD technique. Thermal stability of sisal fibers were decreased on mercerization. Whereas, sisal fibers treated with benzoyl pero xide the enhanced thermal stability. In case of XRD studies, sisal fibers show enhanced crystallin ity.

show abstract

Section: Xrd Analysismentioning

confidence: 99%

Effect of Mercerization and Benzoyl Peroxide Treatment on Morphology, Thermal Stability and Crystallinity of Sisal Fibers

Kaushik¹,

Kumar²,

Kalia³

2013

TEXTILE

107

View full text Add to dashboard Cite

show abstract

“…It is evident from The counter reading at peak intensity at 22˚ is said to represent the crystalline material and the peak intensity at 18˚ corresponds to the amorphous material in cellulose [60,61] , Percentage Crystallinity [62] and crystalline index [63,64] were calculated and tabulated in Table 4. A poor crystallinity index in case of untreated hemp fibers reinforced in cellulose filled epoxy matrix means poor order of cellulose crystals to the fiber axis during treatments, indicated by the lower crystallinity index.…”

Section: X-ray Diffraction Analysismentioning

confidence: 99%

Dynamic mechanical analysis and crystalline analysis of hemp fiber reinforced cellulose filled epoxy composite

et al. 2017

View full text Add to dashboard Cite

“…Mechanism may be written as shown by Figure 8. the polymerization of monomer is reported to be faster than the H abstraction from the biopolymer backbone [25]. The macro radicals ChO .…”

Section: Mechanism For Graft Copolymerizationmentioning

confidence: 99%

Synthesis and characterization of electrical conducting chitosan-graft-polyaniline

Tiwari¹,

Singh²,

Marg³

2007

Express Polym. Lett.

104

View full text Add to dashboard Cite

Abstract.A mucopolysaccharide, chitosan was grafted with polyaniline through oxidative-radical copolymerization using ammonium persulfate in acidic medium. The grafting conditions were extensively studied by varying grafting parameters. All the findings have been discussed and proposed a plausible mechanism for the graft copolymerization. The representative chitosan-graft-polyaniline (Ch-g-PANI) was characterized using UV-vis, FTIR, TGA, X-ray diffraction and Scanning electron microscopy taking chitosan as reference. Ch-g-PANI exhibited electrical conductivity, which increases with the extent of grafting onto chitosan backbone. Its electrical conductivity is further influenced by pH and showed pH switching electrical conduction behavior when exposed to NN3/HCl vapors. The application of conducting biomaterial such as Ch-g-PANI in the electronic devices especially for the fabrication of sensor devices would be attractive not only in terms of product cost and environmental safety but also from a materials science point of view.

show abstract

Grafting of polyacrylonitrile onto guar gum under microwave irradiation

Cited by 90 publications

References 14 publications

Effect of Mercerization and Benzoyl Peroxide Treatment on Morphology, Thermal Stability and Crystallinity of Sisal Fibers

Effect of Mercerization and Benzoyl Peroxide Treatment on Morphology, Thermal Stability and Crystallinity of Sisal Fibers

Dynamic mechanical analysis and crystalline analysis of hemp fiber reinforced cellulose filled epoxy composite

Synthesis and characterization of electrical conducting chitosan-graft-polyaniline

Contact Info

Product

Resources

About