Maintaining modulus of polypropylene composites with ultra-high low temperature toughness by synergistic branched polyethylene and nucleating agents

Shen, Qingyue; Liu, Xulan; Zhao, Ran; Guo, Feng; Mao, Zepeng; Chen, Shuangjun

doi:10.1016/j.jmrt.2023.10.100

Cited by 1 publication

(1 citation statement)

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“…Epoxy resin forms in a reaction with a hardener to form a network structure without the formation of crystals. Crystal formation of a polymer composite is achieved by addition of a filler or nucleating agent [45]. Crystal formation of EP/BF composites was not affected with the addition of BFs due to crosslinking of EP by the reaction between epoxy groups of the EP with -NH groups of the hardener.…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 99%

Effect of Plasma Treatment on Bamboo Fiber-Reinforced Epoxy Composites

Rachtanapun,

Sawangrat,

Kanthiya

et al. 2024

Polymers

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Bamboo cellulose fiber (BF)-reinforced epoxy (EP) composites were fabricated with BF subjected to plasma treatment using argon (Ar), oxygen (O2), and nitrogen (N2) gases. Optimal mechanical properties of the EP/BF composites were achieved with BFs subjected to 30 min of plasma treatment using Ar. This is because Ar gas improved the plasma electron density, surface polarity, and BF roughness. Flexural strength and flexural modulus increased with O2 plasma treatment. Scanning electron microscopy images showed that the etching of the fiber surface with Ar gas improved interfacial adhesion. The water contact angle and surface tension of the EP/BF composite improved after 10 min of Ar treatment, owing to the compatibility between the BFs and the EP matrix. The Fourier transform infrared spectroscopy results confirmed a reduction in lignin after treatment and the formation of new peaks at 1736 cm−1, which indicated a reaction between epoxy groups of the EP and carbon in the BF backbone. This reaction improved the compatibility, mechanical properties, and water resistance of the composites.

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Section: X-ray Diffraction (Xrd)mentioning

confidence: 99%