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Synthesis and characterization of nanocomposite of polyvinyl alcohol and lead sulfide nanoparticles

机译：聚乙烯醇和硫化铅纳米粒子的纳米复合材料的合成与表征

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The nanocomposites consisting of lead sulfide (PbS) nanoparticles (NPs) with average diameter of 26 angstrom and polyvinyl alcohol (PVA) were synthesized using colloidal chemistry methods. The PbS/PVA nanocomposites were characterized using optical, structural, thermal and mechanical techniques. No difference between infrared spectra and no difference between glass transition temperatures after incorporation of the PbS NPs in the PVA matrix indicated weak interaction between nanofilter and polymer. Due to weak interaction between nanofilter and polymer a slight improvement of the mechanical Properties of the PbS/PVA nanocomposite was observed compared to the neat PVA. On the other hand, the presence of the PbS NPs in the PVA matrix induced the increase of the crystallization temperature and enthalpy of crystallization. Also, the thermal decomposition of the PVA shifted towards higher temperature for about 15 degrees C in the presence of the PbS NPs. (c) 2005 Elsevier B.V. All rights reserved.
机译：采用胶体化学方法合成了由平均直径为26埃的硫化铅（PbS）纳米颗粒（NPs）和聚乙烯醇（PVA）组成的纳米复合材料。使用光学，结构，热和机械技术对PbS / PVA纳米复合材料进行了表征。在PVA基质中掺入PbS NP后，红外光谱之间无差异，玻璃化转变温度之间无差异，表明纳米滤光片与聚合物之间的相互作用较弱。由于纳米过滤器和聚合物之间的相互作用较弱，与纯PVA相比，PbS / PVA纳米复合材料的机械性能略有改善。另一方面，PVA基质中PbS NP的存在引起结晶温度的升高和结晶焓。同样，在存在PbS NP的情况下，PVA的热分解向约15摄氏度的高温转移。 （c）2005 Elsevier B.V.保留所有权利。

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