Ziąbka Magdalena, Dziadek Michał, Pielichowska Kinga
Department of Ceramics and Refractories, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30-059 Krakow, Poland.
Department of Glass Technology and Amorphous Coatings, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30-059 Krakow, Poland.
Polymers (Basel). 2020 Jan 12;12(1):197. doi: 10.3390/polym12010197.
Acrylonitrile butadiene styrene/silver nanoparticles (ABS/AgNPs) composites were manufactured through the plastic processing method. Three different matrices were used to obtain polymer and composite samples containing 0.5 wt % and 1.0 wt % of silver nanoparticles, respectively. The aim of this study was to examine physicochemical properties and stability of the materials in the in vitro conditions for two years. The results showed that composites made from amorphous matrices had comparable mechanical properties after incorporation of AgNPs. The values of Young modulus and tensile strength increased after the first and second year of investigation. Silver nanoparticles did not alter the surface parameters-e.g., roughness and contact angle also retained stable values after the in vitro incubation in water solution. The scanning electron observation revealed homogeneous distribution of silver modifier in all the matrices. The 24-month incubation of materials proved the stability of the composites microstructure. The DSC analysis revealed that addition of AgNPs may decrease glass transition temperature of the composite materials which was also reduced after 12 and 24 months of incubation. The attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopic studies did not indicate significant changes in the ABS matrices either upon their modification with AgNPs or after the long-term testing. The conducted studies proved that all the composites are stable and may be used for a long-term working period.
丙烯腈-丁二烯-苯乙烯/银纳米颗粒（ABS/AgNPs）复合材料是通过塑料加工方法制造的。使用了三种不同的基体来分别获得含有0.5 wt%和1.0 wt%银纳米颗粒的聚合物和复合材料样品。本研究的目的是在体外条件下考察材料两年的物理化学性质和稳定性。结果表明，由无定形基体制成的复合材料在掺入AgNPs后具有相当的机械性能。在研究的第一年和第二年之后，杨氏模量和拉伸强度的值有所增加。银纳米颗粒没有改变表面参数，例如，在水溶液中进行体外孵育后，粗糙度和接触角也保持稳定值。扫描电子观察显示银改性剂在所有基体中分布均匀。材料进行24个月的孵育证明了复合材料微观结构的稳定性。DSC分析表明，添加AgNPs可能会降低复合材料的玻璃化转变温度，在孵育12个月和24个月后该温度也会降低。衰减全反射-傅里叶变换红外（ATR-FTIR）光谱研究表明，无论是用AgNPs对ABS基体进行改性，还是经过长期测试，ABS基体都没有明显变化。所进行的研究证明，所有复合材料都是稳定的，可用于长期工作。
