Crystal structure effect in radiation-induced solid-state polymerization of acrylamide

Date

1997-01-01

Author

Usanmaz, Ali

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

8
views

0
downloads

Crystal structure of arcylamide at -150 degrees C nas studied to understand the role of the crystal structure on the reaction mechanism of radiation-induced polymerization in the solid-state. Acrylamide crystallizes in the monoclinic unit cell with the unit fell parameters as; a=828.0(2) pm, b=578.0(4) pm, c=974.9(2) pm, beta=119.62(4)degrees, space group =P 2(1)/c, Z=4 molecules/unit cell, d(x) = 1.165 g/cm(3). From the results of the structural data a polymerization mechanism in the solid-state is suggested. The radiation damage in single crystal of acrylamide was also investigated in detail. The result showed the formation of the amorphous polymer, that phase separated from the crystalline monomer. The post polymerization proceed at the interface of poly mer-monomer up to 100% conversion.

URI

https://hdl.handle.net/11511/53581

Journal

TURKISH JOURNAL OF CHEMISTRY

Collections

Graduate School of Natural and Applied Sciences, Article

Suggestions

OpenMETU
Core

Dark current mechanisms and passivation of InAsSb infrared photodiodes on alternative substrates Ersagun, Özlem; Beşikci, Cengiz; Department of Electrical and Electronics Engineering (2005) This thesis reports a detailed characterization of indium arsenide antimonide (InAs1- xSbx) photodetectors grown on gallium arsenide (GaAs) substrate by molecular beam epitaxy. A combination of polyimide and sulphur and a single layer of polyimide were used as passivation films in this study. Two different epilayer structures were used for assessing the detector performance and comparing the above passivation layers. For the first structure, the optical measurements revealed that Sb mole fraction was 0.13 a...
A van der Waals density functional investigation of carboranethiol self-assembled monolayers on Au(111) Yılmaz, Ayşen; Danışman, Mehmet Fatih (2016-05-14) Isolated and full monolayer adsorption of various carboranethiol (C2B10H12S) isomers on the gold(111) surface has been investigated using both the standard and van der Waals density functional theory calculations. The effect of different molecular dipole moment orientations on the low energy adlayer geometries, the binding characteristics and the electronic properties of the self-assembled monolayers of these isomers has been studied. Specifically, the binding energy and work function changes associated wit...
Structural and electronic properties of borazine cyclacenes Erkoç, Şakir (2001-05-04) The structural and electronic properties of borazine cyclacenes (BNn) have been investigated by performing semiempirical molecular orbital self-consistent field calculations at the level of AM1 method within the RHF formulation. It has been found that as the number of borazine rings increases in the arenoid belt the structures become more exothermic.
POTENTIAL-DEPENDENT SURFACE SEGREGATION IN LEAD PLUS RUTHENIUM PYROCHLORE PB2RU2O7-Y Gökağaç Arslan, Gülsün; KENNEDY, BJ (1993-07-01) The effect of anodic polarization on the surface composition of Pb + Ru pyrochlore Pb2Ru2O7-y in acid and acid+alcohol solutions has been studied using cyclic voltammetry, scanning electron microscopy, energy dispersive analysis and X-ray photoelectron spectroscopy. In acidic solutions the surface is observed to be unstable to oxygen evolution even at reasonably low overpotentials. Lead is found to diffuse from the pyrochlore matrix resulting in the formation of small crystallites of PbO2 on the surface of ...
The Investigation of Electronic, Elastic and Vibrational Properties of an Interlanthanide Perovskite: PrYbO3 KADEROĞLU, ÇAĞIL; SÜRÜCÜ, GÖKHAN; ERKİŞİ, AYTAÇ (2017-10-01) The structural, mechanical, electronic and lattice dynamical properties of the PrYbO3 compound from the ABO(3)-type perovskite family have been investigated by performing the first-principles density functional theory calculations using the generalized-gradient approximation (GGA) with corrected Coulomb interactions (GGA+U). Structural parameters, formation energies and phase transition pressures for the five possible phases of this compound have been calculated. Then, the spin-dependent electronic band str...

Citation Formats

A. Usanmaz, “Crystal structure effect in radiation-induced solid-state polymerization of acrylamide,” TURKISH JOURNAL OF CHEMISTRY, pp. 304–312, 1997, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/53581.