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首页> 外文期刊>Journal of Applied Polymer Science >Enhancement of the mechanical properties and interfacial interaction of a novel chitin-fiber-reinforced poly(epsilon-caprolactone) composite by irradiation treatment
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Enhancement of the mechanical properties and interfacial interaction of a novel chitin-fiber-reinforced poly(epsilon-caprolactone) composite by irradiation treatment

机译：辐照处理增强新型几丁质纤维增强聚（ε-己内酯）复合材料的力学性能和界面相互作用

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摘要

The effects of the fiber reinforcement of a novel bioabsorbable chitin-fiber-reinforced poly(epsilon-caprolactone) (PCL) composite were improved by irradiation treatment. The tensile strength and tensile modulus of the treated specimens were enhanced with respect to those of the untreated specimens. An increase in the fiber content (C-f) resulted in an increase in this enhancement tendency until C-f was 45%. A further increase in C-f increased the tensile modulus but decreased the strength. The flexural strength and flexural modulus were increased for the irradiation-treated specimens in the same way as the tensile test. The microstructure of the tensile fracture showed an improvement in interfacial bonding for the irradiated specimens. The glass-transition temperature (T-g) of the composite increased with an increase in C-f for the irradiation-treated specimens, but there was no change in T-g for the untreated specimens with various values of C-f This indicated that, for the composites with irradiation treatment, the fiber intensively affected the molecular segmental motion of PCL and thereby enhanced the interfacial interaction between the matrices and fibers. The same slope of the storage modulus (G') versus the loss modulus (G") for the irradiated specimens suggested an increase in the compatibility of the composite in comparison with the decrease in the slope with increasing C-f for the untreated specimens. All this demonstrated that there was some interfacial reaction between the fiber and matrix that resulted in the presence of an interfacial phase and improved the mechanical properties of the materials. (C) 2002 John Wiley Sons, Inc. [References: 13]
机译：新型生物可吸收的几丁质纤维增强聚（ε-己内酯）（PCL）复合材料的纤维增强效果通过辐照处理得以改善。相对于未处理的样品，已处理的样品的拉伸强度和拉伸模量提高了。纤维含量（C-f）的增加导致这种增强趋势的增加，直到C-f为45％。 C-f的进一步增加增加了拉伸模量，但降低了强度。以与拉伸试验相同的方式，增加了经辐射处理的样品的弯曲强度和弯曲模量。拉伸断裂的微观结构显示出被辐照样品的界面结合得到了改善。复合材料的玻璃化转变温度（Tg）随辐照处理样品的Cf的增加而增加，但对于各种Cf值的未处理样品，玻璃化转变温度没有变化。这表明，经过辐照处理的复合材料，纤维强烈地影响了PCL的分子节段运动，从而增强了基质与纤维之间的界面相互作用。与未处理样品的斜率随Cf的增加而降低的斜率相比，被辐照样品的储能模量（G'）与损耗模量（G“）的斜率相同，表明复合材料的相容性增加。证明纤维与基体之间存在界面反应，导致界面相的存在并改善了材料的机械性能（C）2002 John Wiley Sons，Inc. [参考文献：13]

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