Enhancement of electrostatic charge dissipation properties of polymers by a sustained‐release effect of mesoporous silica nanoparticles
Enhancement of electrostatic charge dissipation properties of polymers by a sustained‐release effect of mesoporous silica nanoparticles
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DOI：
10.1002/pat.3728
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发表时间：
2016-05
影响因子：
3.4
通讯作者：
L. Rui;Jingjing Si;Tang Ping
中科院分区：
文献类型：
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作者：
L. Rui;Jingjing Si;Tang Ping
小分子表面活性剂（SMS）用作聚合物抗静电剂时，易产生洗出效应，从而降低其使用寿命。为了解决这一问题，通过将SMS（HDC-102或HDC-193）封装到介孔二氧化硅纳米颗粒（如MCM-41）中来制备缓释抗静电剂，并用于改性聚苯乙烯（PS）的抗静电性能。耐水性测试结果表明，HDC-102/MCM-41/PS复合材料经5次洗涤后仍保持良好的抗静电性能，Rs值为6.2 × 1011，而HDC-102/PS复合材料经2次洗涤后抗静电性能下降。接触角的测定表明，缓释效果受SMS的特性影响。此外，MCM-41的加入降低了SMS/PS复合材料的热膨胀系数，提高了热分解温度。这种方法可用于聚合物系统与其他小分子添加剂，以延长其寿命。版权所有© 2015约翰威利父子有限公司.
Small molecular surfactant (SMS), used as antistatic agent of polymers, is prone to the wash-out effects thus reducing its lifetime. To address this issue, the sustained-release antistatic agent is prepared by encapsulating SMS (HDC-102 or HDC-193) into mesoporous silica nanoparticles such as MCM-41 and is used to modify the antistatic properties of polystyrene (PS). The water-resistant test is used to evaluate the sustained-release effect, and the results showed that the HDC-102/MCM-41/PS composite retains favorable antistatic properties with the Rs of 6.2 × 1011 after five times washing, while the HDC-102/PS loses antistatic properties after twice washing. The contact angle measurement demonstrates that the sustained-release effect is affected by the characteristics of SMS. Moreover, the coefficient of thermal expansion of SMS/PS composites is decreased, and the thermal decomposition temperature is increased with incorporation of MCM-41. This approach may be used in polymer systems with the other small molecular additives to prolong their lifetime. Copyright © 2015 John Wiley & Sons, Ltd.