نتایج جستجو برای: phenylene terephthalamide
تعداد نتایج: 2167 فیلتر نتایج به سال:
INTRODUCTION Composites have become an important group of engineering materials, as they offer better physical and mechanical properties in comparison to unreinforced materials. Different types of materials can be used as the matrix of composites, including metals, polymers and ceramics. An important aspect of researches on composites has been the investigation of their mechanical properties [1...
High performance liquid chromatography (HPLC) is one of the most important technologies in separation science in fields including agricultural, pharmaceutical, and medical science [1]. In particular, a significant degree of the performance of LC systems is due to columns which can separate complex mixtures, and columns are constantly being improved to obtain optimal separations of an enormous v...
This paper reports the synthesis and characterizations of a new water-soluble pol &JrB phenylene) (PPP) and its applications in preparing self-assembled multi-layer films. This new water-soluble conducting polymer was prepared through the sulfonation reaction of poly(pquarterphenylene-2,2’-dicarboxylic acid). The incorporation of sulfonate groups has dramatically improved PPP’s solubility in wa...
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