中文摘要：

以壳聚糖、Cd（Ac）2、H2S（g）为原料,常温下用一步法将H2S（g）通入壳聚糖与Cd（Ac）2的复合膜中,制得了壳聚糖基CdS纳米粒子复合膜。用IR、TEM、SEM对此膜的结构进行了研究;用IR-1红外辐射仪对膜的红外辐射特性（8～14μm）进行了测试。结果表明：用一步法可以制得CdS纳米粒子分散较均匀、粒径可控（10～100nm）的复合膜;壳聚糖与CdS纳米粒子之间存在较强烈的相互作用;复合膜红外发射率较低,当CdS纳米粒子粒径范围在10～20nm,CdS与壳聚糖结构单元的比例为1.0时,薄膜的红外发射率（8～14μm）达到最低,其值为0.013。

英文摘要：

In this research, new organic - inorganic nanocomposite films of CS and CdS were prepared by one - step synthesis. The CS/ CdS nanocomposite films were characterized by IR,TEM,SEM. The results indicated that hexagonal CdS nanoparticles were well dispersed in CS, with the sizes adjusted from 10 nm to 100 nm. The infrared emissivity of the films were characterized by IR - 1 infrared emissivity instrument. As results showed, the CS/ CdS nanocomposite films had significantly lower infrared emissivity（8 - 14 μm）, meanwhile when the size of CdS nanoparticles was between 10 - 20 nm and the mole ratio of CdS to CS construction unit was 1.0, the film got the lowest infrared emissivity（8 - 14 μm） value of 0. 013. Reaction accounted for the strong synergism effect existing between CS and CdS nanoparticles.