studies on miscibility of polyacrylamide polyethylene glycol

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studies on miscibility of polyacrylamide/polyethylene glycol ...

Studies on miscibility of polyacrylamide/polyethylene glycol ...

Miscibility studies have been conducted on solutions of blends of polyacrylamide (PAAm) and polyethylene glycol (PEG) over an extended range of concentrations in water. The ultrasonic velocity, viscosity, density, and refractive index of the blends have been measured for different compositions viz., 0/100, 10/90, 20/80, 30/70, 40/60, 50/50, 60/ ...

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studies on miscibility of polyacrylamide/polyethylene glycol ...

Studies on miscibility of polyacrylamide/polyethylene glycol ...

There have been many studies on miscible blends con- taining poly(ethylene glycol) and poly(ethylene oxide). For example, blends of PEO/poly(epichlorohydrin) and PEO/poly(epichlorohydrin-co-ethylene oxide) were stud- ied by Silva et al. [19]. For these systems, the polymer- polymer interaction parameters are all negatives and ex-

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studies on miscibility of polyacrylamide/polyethylene glycol ...

Studies on miscibility of polyacrylamide/polyethylene glycol ...

Polyethylene glycol (PEG) is a chemical that has an extensive variety of applications in the world of medicine. It is used as a base to manufacture certain medicines, assist in drug delivery, and is also used as an agent in some medical procedures. It is an osmotic laxative. Polyethylene glycol works by retaining water in the stool, resulting in softer stools and more frequent bowel movements ...

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miscibility studies of hydroxyethyl cellulose and poly (ethy ...

MISCIBILITY STUDIES OF HYDROXYETHYL CELLULOSE AND POLY (ETHY ...

The miscibility study of Hydroxyethyl Cellulose (HEC) with Poly (ethylene glycol) (PEG) was investigated in dilute aqueous solutions by viscometry, ultrasonic velocity and Refractive Index. Homo Polymers of HEC and PEG and their blends (HEC/PEG)

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full article: studies of miscibility and specific interactio ...

Full article: Studies of miscibility and specific interactio ...

Miscibility Behavior of Polyacrylamides Poly(Ethylene Glycol) Blends: Flory Huggins Interaction Parameter Determined by Thermal Analysis Maria Elisa S. R. Silva 1*, Valdir Mano 2, Raquel R. J. Pacheco 1 ...

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positron annihilation and differential scanning calorimetry ...

Positron annihilation and differential scanning calorimetry ...

2. Material and Methods In the present study, Polyethylene Glycol (PEG 1500) is blended with Polystyrene (PS 350000) in toluene. High purity spectra grade PEG 1500 and PS 35000 are obtained from ...

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studies of miscibility and specific interactions of ...

Studies of miscibility and specific interactions of ...

Miscibility Studies of Hydroxyethyl Cellulose … 255 In spite of the intensive investigation on inter polymer complexation between HEC and PVP, as well as their emerging perspective in medical ...

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molecular simulation and experimental studies of the miscibi ...

Molecular simulation and experimental studies of the miscibi ...

Swamy, T. M. M., & Siddaramaiah. (2007). Studies on miscibility of polyacrylamide/polyethylene glycol blends. Journal of Applied Polymer Science, 104(3), 2048–2053 ...

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viscosity, ultrasonic, and refractometric studies of chitosa ...

Viscosity, Ultrasonic, and Refractometric Studies of Chitosa ...

Molecular simulation and experimental studies of the miscibility of polylactic acid/polyethylene glycol blends Adisak Takhulee1 & Yoshiaki Takahashi 2 & Visit Vao-soongnern1 Received: 7 June 2016/Accepted: 19 December 2016/Published online: 27 December ...

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How to predict miscibility of PLA/peg blends with different peg concentrations?

Computer simulation and experiments were performed to investigate the miscibility of PLA/PEG blends with different PEG concentrations. Flory-Huggins interaction (χ) parameter used to predict the miscibility for the blends was estimated by molecular dynamic simulation of fully atomistic model.

Is PLA/peg miscible at 180 °C?

Nevertheless, the data strongly suggest that PEG 25 and 30% at 180 °C is close to the phase separation point, consistent with the DSC results. MD and DPD simulations were employed to predict the miscibility of PLA/PEG systems. The χ ij parameter for PLA/PEG blends with different PEG contents were calculated by MD simulation.

How to predict the miscibility of PLA/peg systems?

MD and DPD simulations were employed to predict the miscibility of PLA/PEG systems. The χ ij parameter for PLA/PEG blends with different PEG contents were calculated by MD simulation. The PEG concentrations of 10 to 90 wt% were varied to blend with PLA.

Are PLA/peg blends miscible?

The χ ij parameter of polymer mixtures was analyzed to determine the miscibility of PLA/PEG blends. The results show that PLA and PEG are miscible at low PEG concentrations (10–30 wt%), while at high PEG concentration (>50 wt%) the immiscibility was observed.

What are the thermal properties of PLA and Peg?

Thermal properties including the glass transition temperature ( T g ), crystallization temperature ( T c ), melting temperature ( T m ), degree of crystallinity ( X c) of PLA, and PEG and their blends were investigated by DSC technique. These parameters were used to examine the miscibility of the blends.

What is the rheological behavior of polymer blend samples?

All polymer samples exhibit the rheological behavior of a typical polymer melt as characterized by smaller G ′ than the G ′′. As expected, the moduli of blend samples decreased with increasing PEG content. Frequency dependencies of G ′ and G ″ are close to ω 2 and ω, respectively, denoting terminal region behavior.

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