表面活性剂模板在空气-水界面ZrO2薄膜中的稳定性

采用模板——十二烷基苯磺酸(DBS-H)在空气-水界面组装ZrO₂薄膜，研究了DBS-H在ZrO₂自组装薄膜中的水溶性、化学稳定性、热稳定性和光化学稳定性。模板的各类稳定性将直接控制ZrO₂薄膜结构，主要表现在层间距变化上。从模板与Na₂SiO₃反应的研究中获得了一种制备ZrO₂ / SiO₂复合氧化物薄膜的新方法，并推测出该复合薄膜的结构。     

X-Ray Spectra of Iron Phosphonates

The reaction of dialkyl alkylphosphonates with trivalent metal chlorides has recently been reported (1,2). The typical products of these reactions is a solid which is insoluble in most organic solvents and water. A monomeric structure was postulated for the iron phosphonates(1), while polynuclear structure was proposed for titanium, vanadium, and chromium phosphonates(2). Infrared(1) and Mossbauer-effect(3) studies were unable to differentiate between the monomeric or polynuclear structure for the iron phosphonates, In an attempt to further characterize the iron phosphonates, an x-ray diffration study was undertaken. The results of these studies are reported herein.     

一种喹啉阳离子聚合物粘土水化抑制剂研究

以丙烯酰胺(AM),烯丙醇聚氧乙烯醚(APEG)和溴化烯丙基喹啉(QAB)为单体,制备了一种阳离子聚合物AM/APEG/QAB。考察了单体配比、pH、引发剂浓度以及温度等合成条件对防膨率的影响。对聚合物进行了FTIR、1H NMR及TG表征。研究了不同浓度下聚合物溶液的防膨率,并利用XRD研究了聚合物溶液对钠蒙脱土(Na-MMT)层间距的影响。结果表明:该聚合物在浓度为2 wt%时的防膨率能达到78%。与低浓度的KCl互配不仅能够有效降低Na-MMT层间距到15.80,同时能够将岩心在水中浸泡后压入硬度保留率从42.6%提高至75.0%。