polyacrylamide refractive index in Tamale
polyacrylamide refractive index in Tamale
polyacrylamide refractive index in Tamale
polyacrylamide refractive index in Tamale
polyacrylamide refractive index in Tamale
optical constants of polyacrylamide solution in the infrared

Optical constants of polyacrylamide solution in the infrared

The optical properties of polyacrylamide (PAM) solution play an important role in measuring PAM concentration of the solution in the polymer flooding of oilfield based on optical methods.

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polyacrylamide | 9003-05-8

Polyacrylamide | 9003-05-8

Polyacrylamide, also briefly referred as PAM, is commonly a polymer with acrylamide monomers bonded connected by end to end configuration; it is a hard glassy solid at room temperature. Because of the difference in production methods, the products can be white powder, translucent beads and flaky like.

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optical constants of polyacrylamide solution in infrared

Optical constants of polyacrylamide solution in infrared

The absorption index and refractive index of PAM solution in the concentration range of 20¨C800 mg/L are 3.42 ¡Á 10 ?3 ¨C9.13 ¡Á 10 ?3 and 1.22¨C1.43, respectively. Keywords PAM solution Transmittance spectra Optical constants 1. Introduction

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refractive index and absorption coefficient of acrylamide.

Refractive index and absorption coefficient of acrylamide.

We present terahertz time domain spectra of acrylamide in the frequency range from 0.2 to 2 THz with nearly constant refractive index having an average value of 1.33 and an absorption...

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refractive index change due to volume-phase transition in

Refractive Index Change Due to Volume-Phase Transition in

Figure 4 shows the results for the survey of refractive index over the spectral range 400 to 1800nm at temperatures ranging from 28 to 37 C. A rapid increase in the index of refraction can be seen around the temperature of 34 C, which corresponds to the critical temperature where the gel Fig. 2. Temperature dependent change in size of PNIPAM

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refractive index increments of polyacrylamide and comments on

Refractive index increments of polyacrylamide and comments on

The refractive index increments of polyacrylamide for various wavelength were determined both in the usual solvents (water, ethylene glycol, formamide) and in those so far unused (ethanolamine, dimethyl sulfoxide). The values thus obtained are compared with the reported data. The necessity to employ anhydrous polyacrylamide samples is stressed.

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the instantaneous monitoring of polyacrylamide gels during

The instantaneous monitoring of polyacrylamide gels during

The use of local increments of refractive index in polyacrylamide gels for measuring protein concentrations in zones during electrophoresis is briefly considered; it is found that such increments are greater than would be expected from the amount of protein when sodium dodecyl sulphate is present.

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in-plane anisotropic optical and mechanical properties of two

In-plane anisotropic optical and mechanical properties of two

While along the a-axis the refractive index of MoO 3 is n a = 2.21 + 0i, along the c-axis the refractive index increases up to n c = 2.30 + 0i. The difference ¦¤ n between n c and n a , is ~0.1.

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detection challenges in quantitative polymer analysis by

Detection challenges in quantitative polymer analysis by

Current methods often rely on refractive index detection, which is not accurate when dealing with complex samples as the refractive©index increment is often unknown. We review current and emerging detection methods in liquid chromatography with the aim of identifying detectors, which can be applied to the quantitative analysis of complex polymers.

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