Mesoporous silica as nanocarrier of antioxidant for highly anti-aging elastomer composites

被引：19

作者：

Hu, Dechao ^{[1
]}

Luo, Yuanfang ^{[1
]}

Chen, Yongjun ^{[1
]}

Lin, Jing ^{[1
]}

Jia, Demin ^{[1
]}

机构：

[1] South China Univ Technol, Sch Mat Sci & Engn, Key Lab Guangdong High Property & Funct Macromol, 381 Wushan Rd, Guangzhou 510640, Guangdong, Peoples R China

来源：

POLYMER DEGRADATION AND STABILITY | 2019年 / 169卷

基金：

中国国家自然科学基金;

关键词：

Mesoporous silica; Antioxidant; Rubber composites; Anti-aging; SUSTAINED-RELEASE; HALLOYSITE NANOTUBES; CARBON NANOTUBES; NANOPARTICLES; BEHAVIOR; RUBBER; DOXORUBICIN; EFFICIENCY; DELIVERY;

D O I：

10.1016/j.polymdegradstab.2019.108987

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Mesoporous silica nanoparticles (MSNs) were firstly utilized as the delivery vehicles of antioxidant 2-mercaptobenzimidazole (MB) to fabricate highly anti-aging styrene-butadiene rubber (SBR) composites. The thermo-oxidative aging behaviour of SBR composites was systematically evaluated by mechanical testing, FTIR and XPS. For the composites with MSNs-MB and free MB, though some of free MB were consumed or migrated to the elastomer surface, the released MB from MSNs-MB steadily migrated to the free rubber phase to ensure a continuous and stable antioxidant supply for a long time. Therefore, the SBR composites with binary protection from MSNs-MB and free MB exhibited superior thermo-oxidative stability than the SBR composites with only free MB. This work proposed a reliable approach to resolve the "blooming" defects of antioxidants and extend the service life of the elastomer products, which may open up a new route for the rational design and construction of highly anti-aging elastomer composites. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页数：5

共 34 条

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