Nondestructive Modification of Catechol/Polyethyleneimine onto Polyester Fabrics by Mussel‐Inspiration for Improving Interfacial Performance,Macromolecular Materials and Engineering

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Nondestructive Modification of Catechol/Polyethyleneimine onto Polyester Fabrics by Mussel‐Inspiration for Improving Interfacial Performance
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2020-08-11 , DOI: 10.1002/mame.202000258
Yuan Chen ₁ , Xiaoqing Wu ₁ , Junfu Wei ₂ , Hailiang Wu _{1,

3}

Affiliation

Co‐deposition of catechol and polyethyleneimine onto polyethylene phthalate (PET) fiber by mussel‐inspiration is conducted and subsequently utilized to prepare polyethyleneimine/catechol modified PET fiber reinforced composites (polyethyleneimine (PEI)/CCh‐m‐PET FRCs). The surface polarity is characterized through the dynamic contact angle. The mechanical performances including tensile, flexural, and short beam shear strength are evaluated. Additionally, the single‐bundle pull‐out tests are carried out with the double‐end method. The analysis reveals that compared to the untreated PET reinforced composite, there are 33.49% and 34.35% increase of the critical load and peak load for PEI‐modified specimens, respectively, meanwhile the critical debonding energy and pull‐out energy calculated increase by 28.46% and 24.47%, respectively. The interlaminar shear strength and interfacial shear strength of modified PET can reach the values of 145.89 and 20.88 MPa, which are significantly improved by 58.01% and 70.94%.

中文翻译：

贻贝启发对邻苯二酚/聚乙烯亚胺在聚酯织物上的无损改性，以改善界面性能

通过贻贝吸气将邻苯二酚和聚乙烯亚胺共沉积到聚邻苯二甲酸乙二醇酯（PET）纤维上，然后用于制备聚乙烯亚胺/邻苯二酚改性的PET纤维增强复合材料（聚乙烯亚胺（PEI）/ CCh-m-PET FRCs）。表面极性通过动态接触角来表征。评估了机械性能，包括拉伸，弯曲和短梁剪切强度。此外，单捆拉出测试是通过双端方法进行的。分析表明，与未处理的PET增强复合材料相比，PEI改性试样的临界载荷和峰值载荷分别增加了33.49％和34.35％，而计算出的临界脱粘能和拉拔能增加了28.46％和24.47％。

更新日期：2020-09-14

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