Thermal, mechanical, and optical studies of NaBr-added l-alanine crystal.

Jayanalina, T.; Rajarajan, G.; Parthiban, S.; Mojumdar, S.

The 1:1 adduct of l-Alanine and sodium bromide ( l-ANaBr) crystal has been grown from aqueous solution by a slow evaporation technique. l-alanine and sodium bromide were used in the ratio 1:1 for synthesis. Characterizations were carried out to study the thermal, optical, and mechanical properties of the grown crystal. Single-crystal X- ray diffraction analysis shows that the grown crystal belongs to the monoclinic system. The crystalline nature and its various planes of reflections were observed by powder XRD analysis. Thermal studies reveal that the crystal is stable up to 113.37 °C. The chemical compositions of the grown crystal were determined by FT-IR spectral analysis. The transmittance, absorption, and reflection spectrum of l-ANaBr crystal studied using a UV-Vis spectrometer indicates that the crystal has good optical transparency. The mechanical property of the grown crystal studied using Vickers microhardness measurement reveals that the crystal is a soft material.

SODIUM bromide; THERMAL properties of metals; MECHANICAL properties of metals; OPTICAL properties of metals; ALANINE; AQUEOUS solutions; EVAPORATION (Chemistry); CRYSTAL growth; FOURIER transform infrared spectroscopy

Journal of Thermal Analysis & Calorimetry, 2013, Vol 112, Issue 2, p1025

1388-6150

Academic Journal

10.1007/s10973-013-3058-7