Surface‐modified mesoporous silica nanorods for the highly aging resistance rubber through controlled release of antioxidant

The migration and blooming of antioxidant molecules in the field of anti‐aging rubber is a challenge, where developing novel nanocarriers loaded with antioxidant molecules can solve the above problem. In this article, the surface thiol functionalized mesoporous silica nanorods loaded with antioxidan...

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Bibliographic Details
Published in:Polymers for advanced technologies 2021-09, Vol.32 (9), p.3384-3391
Main Authors: Luo, Yang, Wang, Jun‐Peng, Cui, Xurui, Fu, Ye, Li, Guo Liang, Wang, Wencai
Format: Article
Language:English
Subjects:
Aging
Antioxidants
anti‐aging
Belt conveyors
Butadiene
Controlled release
Mechanical properties
mesoporous silica nanorods
nanocarrier
Nanorods
Phenylenediamine
Rubber
Silicon dioxide
Styrenes
Sustained release
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Summary:The migration and blooming of antioxidant molecules in the field of anti‐aging rubber is a challenge, where developing novel nanocarriers loaded with antioxidant molecules can solve the above problem. In this article, the surface thiol functionalized mesoporous silica nanorods loaded with antioxidant N‐(1,3‐dimethyl)butyl‐N′‐phenyl‐p‐phenylenediamine (MSN‐SH‐4020) was synthesized to avoid the blooming of antioxidants and then to improve the anti‐aging performance of styrene‐butadiene rubber (SBR). The migration of antioxidant molecules could be limited by encapsulating antioxidant in the pore of mesoporous silica nanorods, and the contend of antioxidant in the SBR reaches up to 1.33 wt%. The sustained release of antioxidant molecules from the pore increases the effective time of action of the antioxidant. After 168 hours of thermal oxidative aging test at 100°C, styrene‐butadiene rubber with 10 wt % surface thiol functionalized mesoporous silica nanorods loaded with 4020 (MSN‐SH‐4020) shows preservation of mechanical properties without blooming. This approach is highly perspective in many applications, such as long‐life sealing rubber and conveyor belts.
ISSN:1042-7147
1099-1581
DOI:10.1002/pat.5348