壳聚糖
材料科学
淀粉
纳米颗粒
热塑性塑料
Zeta电位
极限抗拉强度
复合材料
纳米复合材料
化学工程
接触角
化学
纳米技术
有机化学
工程类
标识
DOI:10.1016/j.ijbiomac.2021.08.141
摘要
The ultrasonic treatment could decrease the particles size of chitosan-SiO2 particles. The EDS of samples with ultrasonic treatment for 0 min and 10 min indicated that the SiO2 was present in prepared chitosan-SiO2 particles. When the ultrasonic time reached 10 min, the chitosan-SiO2 nanoparticles formed and the mean size was 506.7 ± 3.42 nm and the Zeta potential of the chitosan-SiO2 nanoparticles was greater than 30 mV, showing the suspension was a stable dispersed liquid. The chitosan-SiO2 nanoparticles were used as reinforcement in thermoplastic starch films to further verify their performance in enhanced films. The water contact angle of thermoplastic starch film reinforced with chitosan-SiO2 nanoparticles was 44.13 ± 5.02° and had a good mechanical property with tensile strength of 8.91 ± 0.49 MPa. This study indicates that chitosan-SiO2 nanoparticles could be used as a reinforcement to prepare thermoplastic starch films and promote the application of chitosan nanoparticles in nanocomposite films.
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