Studies on microwave-irradiated kopak cotton fibers (<i>Bombax ceiba</i>): using SAXS technique

Annadurai, V.; Urs, G. Thejas; Somashekar, R.

doi:10.1080/15685543.2013.834196

Cited by 1 publication

(2 citation statements)

References 8 publications

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“…Equations 2(a)–(d) are obtained by taking

H_{y} = A exp (- i χ)

J_{Z} = B \exp (- i \emptyset)

and

X = χ + \emptyset

where X is the distribution width. We have used the exponential distribution function for the phase lengths . The normalized exponential distribution function is given by

h (x) = \propto \exp (- \propto ((), X - ɛ))

where

\propto = (1 / 2 γ A)

ɛ = Y (1 - 2 γ)

, and γ is a parameter controlling both the skew and the dispersion of distribution.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Phase Behaviors of PU/SPI Green Composites Using SAXS Profiles

Madhukar

Gowda

Annadurai³

et al. 2015

Adv Polym Technol

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A series of polyurethane (PU) green composites have been synthesized with varying amounts, namely 0, 2, 4, 8, and 12 wt% of soya protein isolate (SPI) by two methods. In the first method, castor oil (CO) and toluene-2,4-diisocyanate (TDI) molar ratio is CO/TDI : 1/1 with varying amounts of the SPI content. In the second method, the molar ratio of TDI is calculated by considering the -OH groups of both CO and SPI. We made the assumption that, in the first method, SPI acts as a filler and in the second method SPI is one of the coreactants in PU formation. The mechanical properties of the fabricated PU/SPI green composites are evaluated; and it is found that the tensile strength increases up to 8 wt% of SPI, and a further increase in SPI leads to reduction in the tensile strength. The small angle x-ray scattering profiles have been used to evaluate the arrangement of amorphous (A) and crystalline (C) regions in the PU/SPI green composites in a scale of about 700 Ǻ by considering the variation in scattered intensity with scattering angles ranging from 0.3°to 1.5°. For this purpose, a linear paracrystalline model is used. In this study, the exponential distribution of phase lengths gives a good agreement between the measured and computed data on the basis of a linear paracrystal model. It is observed that there are significant changes in the distribution of phase lengths due to changes in the composition and chemical structure of PU/SPI composites obtained by methods 1 and 2. C 2015 Wiley Periodicals, Inc. Adv Polym Technol 2016, 35, 21526; View this article online at wileyonlinelibrary.com.

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“…Equations 2(a)–(d) are obtained by taking

H_{y} = A exp (- i χ)

J_{Z} = B \exp (- i \emptyset)

and

X = χ + \emptyset

where X is the distribution width. We have used the exponential distribution function for the phase lengths . The normalized exponential distribution function is given by

h (x) = \propto \exp (- \propto ((), X - ɛ))

where

\propto = (1 / 2 γ A)

ɛ = Y (1 - 2 γ)

, and γ is a parameter controlling both the skew and the dispersion of distribution.…”

Section: Methodsmentioning

confidence: 99%

“…We have used the exponential distribution function for the phase lengths. [29][30][31][32] The normalized exponential distribution function is given by…”

Section: Saxs Analysis and Computationmentioning

confidence: 99%