Synergistic toughening of epoxy resin by CTBN and CM-β-CD,Journal of Applied Polymer Science

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Synergistic toughening of epoxy resin by CTBN and CM-β-CD
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2021-06-15 , DOI: 10.1002/app.51248
Xiangyun Yin _{1,

2} , Zhipeng Xie _{1,

2} , Qi Liu _{1,

2} , Xubo Yuan _{1,

2} , Xin Hou _{1,

2} , Jin Zhao _{1,

2}

Affiliation

Carboxymethyl-β-cyclodextrin (CM-β-CD) and carboxyl terminated liquid nitrile rubber (CTBN) were used as binary component fillers in toughening the epoxy resin (E-54). For a single component filler system, the addition of CTBN resulted in significantly improved fracture toughness but reduction of glass transition temperature (T_g) and modulus of epoxy resin. On the other hand, the addition of CM-β-CD resulted in a modest increase in modulus and T_g, and significant improvement in toughness. This work provides a promising route of nanocomposites with excellent toughness. Besides the mechanism of synergistic toughening in this project was explained, and the major toughening mechanisms were attributed to interfacial micro-cracks, energy dissipation of CM-β- CD. This work gives us a further understanding of the modification effect of β- CD.

中文翻译：

CTBN与CM-β-CD协同增韧环氧树脂

羧甲基-β-环糊精（CM-β-CD）和羧基封端的液态丁腈橡胶（CTBN）被用作增韧环氧树脂（E-54）的二元组分填料。对于单组分填料体系，CTBN 的加入显着提高了断裂韧性，但降低了环氧树脂的玻璃化转变温度 ( T _g ) 和模量。在另一方面，在加入CM-β-CD的导致模量略有增加和Ť_克，且韧性显着提高。这项工作为制备具有优异韧性的纳米复合材料提供了一条有前途的途径。除了解释了该项目中的协同增韧机制外，主要的增韧机制归因于界面微裂纹、CM-β-CD 的能量耗散。这项工作让我们进一步了解β-CD的修饰作用。

更新日期：2021-06-17

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