Advances in Chemical and Biological Engineering http://submission.ajournals.com/index.php/ACBE <p><strong>Advances in Chemical and Biological Engineering (ACBE)</strong> <strong>journal</strong> is an international peer-reviewed journal that publishes original and high-quality research papers in all areas of Chemical and Biological Engineering. As an important academic exchange platform, scientists and researchers can know the most up-to-date academic trends and seek valuable primary sources for reference.</p><p> </p><p>Journal homepage: http://ajournals.com/index.php/journals/acbe</p> en-US Advances in Chemical and Biological Engineering In-Situ polymerization and characterization of polyurethane-urea/diamond nanocomposites http://submission.ajournals.com/index.php/ACBE/article/view/25 <p><strong>Abstract</strong></p><p>Nanodiamond as a nanoparticle has been widely used in different applications including polymer nanocomposites due to its excellent properties. For this purpose it is utilized to apply and study the effect of nanodiamond in polyurethane–urea matrix.</p><p>Polyurethane-urea/diamond nanocomposites were prepared using polycaprolactone diol, 4, 4<sup>′</sup>-methylene bis (cyclohexyl) diisocyanate, methylene ortochloroaniline and diamond nanoparticles. The molecular structure of the polymer nanocomposites and dispersion of nanodiamonds were characterized and studied by FTIR and, <sup>1</sup>HNMR spectroscopy, X-ray diffraction, Scanning electron microscopy, and Transmission electron microscopy. Disappearance of isocyanate NCO peak measured by FTIR spectroscopy and formation of NH bond measured by NMR spectroscopy confirmed completion of the reaction and polymer formation. Micrographs of SEM &amp; TEM showed reasonable dispersion of nanoparticles throughout the polymer matrix, especially in lower percentage of nanodiamond particles. This may be explained by evidence of functional groups on the surface of nano diamond which suggests good interaction with polymer matrix. Agglomeration of nanodiamond particles is also observed by scanning and transmission electron microscope which are ascribed to the high surface free energy of nanodiamond particles and increased by increasing the amount of nanodiamond in polyurethane-urea matrix. DSC and TGA analysis also showed improvement in thermal property.</p> Meisam Barikani Mohammad Reza Kalaee Saeedeh Mazinani Mehdi Barikani ##submission.copyrightStatement## http://creativecommons.org/licenses/by-nc/4.0 2015-10-28 2015-10-28 1 2