<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ojha, U. P.</style></author><author><style face="normal" font="default" size="100%">Ramesh, C.</style></author><author><style face="normal" font="default" size="100%">Kumar, Anil</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Design, syntheses, and characterization of new thermoplastic polyureas based on 3,4-ethylenedioxythiophene</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Polymer Science Part A-Polymer Chemistry</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">3</style></keyword><keyword><style  face="normal" font="default" size="100%">4-ethylenedioxythiophene</style></keyword><keyword><style  face="normal" font="default" size="100%">heteroaromatic polymers</style></keyword><keyword><style  face="normal" font="default" size="100%">Polyurea</style></keyword><keyword><style  face="normal" font="default" size="100%">polyurea gels</style></keyword><keyword><style  face="normal" font="default" size="100%">Thermogravimetric analysis (TGA)</style></keyword><keyword><style  face="normal" font="default" size="100%">thermoplastics</style></keyword><keyword><style  face="normal" font="default" size="100%">WAXS</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">DEC</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">23</style></number><publisher><style face="normal" font="default" size="100%">WILEY-BLACKWELL</style></publisher><pub-location><style face="normal" font="default" size="100%">111 RIVER ST, HOBOKEN 07030-5774, NJ USA</style></pub-location><volume><style face="normal" font="default" size="100%">43</style></volume><pages><style face="normal" font="default" size="100%">5823-5830</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;New thermoplastic polyureas labeled PUn (n = 2, 3, 4, 6, 7, 9, or 10), based on 3,4-ethylenedioxythiophene (EDOT) with flexible aliphatic spacers, were synthesized and characterized for the first time. EDOT was chosen as a replacement for the aromatic phenyl group in conventional thermoplastics based on urea linkages to improve solubility without compromising the thermal properties. As synthesized, all the samples exhibited a semicrystalline nature. The glass-transition and melting temperatures showed a strong dependence on the spacer length. A comparison of the thermal properties of these polyureas with the corresponding phenyl analogues indicated that EDOT was a viable heteroatomic analogue of the phenyl group to be inserted into the main-chain polyureas without hampering their thermal stability. The polyureas with spacer lengths greater than hexamethylene formed transparent gels in N-methylpyrrolidone, 1,1,2,2-tetrachloroethane, and dimethyl sulfoxide. The molecular packing of the polyureas was assigned with wide-angle X-ray diffraction studies. (c) 2005 Wiley Periodicals, Inc.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">23</style></issue><work-type><style face="normal" font="default" size="100%">Article</style></work-type><custom2><style face="normal" font="default" size="100%">&lt;p&gt;Council of Scientific &amp;amp; Industrial Research (CSIR) - India&lt;/p&gt;</style></custom2><custom3><style face="normal" font="default" size="100%">&lt;p&gt;Foreign&lt;/p&gt;</style></custom3><custom4><style face="normal" font="default" size="100%">3.114</style></custom4></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Jagtap, Siddheshwar B.</style></author><author><style face="normal" font="default" size="100%">Mohan, Muthu Subramanian</style></author><author><style face="normal" font="default" size="100%">Shukla, Parshuram G.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Improved performance of microcapsules with polymer nanocomposite wall: preparation and characterization</style></title><secondary-title><style face="normal" font="default" size="100%">Polymer</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Microcapsules</style></keyword><keyword><style  face="normal" font="default" size="100%">Nanoclay</style></keyword><keyword><style  face="normal" font="default" size="100%">Nanocomposites</style></keyword><keyword><style  face="normal" font="default" size="100%">Polyurea</style></keyword><keyword><style  face="normal" font="default" size="100%">Release mechanism</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2016</style></year><pub-dates><date><style  face="normal" font="default" size="100%">JAN</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">ELSEVIER SCI LTD</style></publisher><pub-location><style face="normal" font="default" size="100%">THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND</style></pub-location><volume><style face="normal" font="default" size="100%">83</style></volume><pages><style face="normal" font="default" size="100%">27-33</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Polyurea/clay nanocomposite microcapsules containing dimethyl phthalate (DMP) as a model compound were prepared by interfacial polymerization technique. Nanoclays namely, montmorillonite Na+ (MMT) and Laponite were incorporated into microcapsule wall and their effects on morphology, thermal properties and release of DMP from microcapsules were investigated. All microcapsules were characterized using scanning electron microscope (SEM), X-ray diffraction (XRD), transmission electron microscope (TEM), thermogravimetric analysis (TGA) and Fourier transform infrared (FTIR) spectroscopy. The present preparation process results in formation of polyurea/clay nanocomposite microcapsule wall with intercalated clay layered as evidenced by XRD and TEM. Nanocomposite microcapsules have shown significant reduction in release of DMP and change in release mechanism as compared to the pristine microcapsules. Nanocomposite microcapsules show good improvement in the fracture strength as compared to pristine microcapsules. The approach used herein is simple and can be adopted to many other polymeric microcapsule systems prepared by different microencapsulation techniques, requiring reduction in release rate and/or mechanism for several applications like pharmaceuticals, agrochemicals, industrially important chemicals, consumer products, etc. (C) 2015 Elsevier Ltd. All rights reserved.&lt;/p&gt;</style></abstract><custom3><style face="normal" font="default" size="100%">&lt;p&gt;Foreign&lt;/p&gt;</style></custom3><custom4><style face="normal" font="default" size="100%">3.586</style></custom4></record></records></xml>