Enhancement of the Surface Properties on Polypropylene Film Using Side-Chain Crystalline Block Copolymers

Hirai, Sho; Phanthong, Patchiya; Ōkubo, H.; Yao, Shigeru

doi:10.3390/polym12112736

Cited by 4 publications

(1 citation statement)

References 37 publications

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“…Polypropylene (PP) is one of the important olefin polymers, and it has become of great commercial importance because it is inexpensive and it has many attractive physical and chemical properties [1,2]. PP, which is a saturated hydrocarbon, has good abrasion resistance, good chemical resistance, and good antistatic properties.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Dyeing of Polypropylene Using Fluorine–Oxygen Gas Mixtures

Namie,

Kim,

Yonezawa

2023

Colorants

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Surface fluorination with pure F2 gas can easily make the surface on PP (polypropylene) hydrophobic, and it causes limited dyeability, as reported in a previous paper. In this study, to produce a more hydrophilic surface, surface fluorination of PP was performed at 25 °C, total gas pressure of 13.3 kPa, and reaction time of 1 h using F2 and O2 mixtures with different proportions of F2 gas. The surface roughness of the fluorinated PP samples was about 1.5 times higher than that of the untreated sample (5 nm). Fourier-transform infrared spectroscopy and X-ray photoelectron spectroscopy (XPS) results showed that the PP-derived bonds (-C-C- and -CHx) decreased because they were converted into polar groups (-C–O, -CHF-, and -CFx), which increased the surface electronegativity of the PP. The variation in the F2 gas proportion in the gas mixture significantly affected the hydrophilicity and surface composition of the PP. At F2 gas proportions of <70%, the hydrophilicity of the fluorinated PP samples was increased. Notably, the hydrophilic and negatively charged PP surface enhanced the dyeing of the polymer with basic methylene blue (MB). In contrast, at F2 gas proportions of >90%, the PP surface became hydrophobic owing to increased numbers of hydrophobic -CF3 bonds. Thus, enhanced PP dyeing can be controlled based on the composition of the F2 and O2 gas mixture.

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Section: Introductionmentioning

confidence: 99%

Enhanced Dyeing of Polypropylene Using Fluorine–Oxygen Gas Mixtures

Namie,

Kim,

Yonezawa

2023

Colorants

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Molding blends of silicone polymer / polypropylene with durable resistant to extreme conditions based on migration and compatibility of molecular chains

Wang,

Huang,

et al. 2024

European Polymer Journal

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Enhanced Dyeing of Polypropylene Using Fluorine–Oxygen Gas Mixtures

Namie¹,

Kim²,

Yonezawa³

2023

Preprint

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The surface fluorination of polypropylene (PP) was performed using F2 and O2 gas mixtures with different F2 gas proportions at 25 °C and 13.3 kPa for 1 h. The surface roughness of the fluorinated PP samples was approximately 1.5 times higher than that of the untreated sample (5 nm). The Fourier-transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) results showed that the PP-derived bonds (-C-C- and -CHx) decreased because they were converted into polar groups (-C–O, -CHF-, and -CFx), which increased the surface electronegativity of PP. The variation in the F2 gas proportion in the gas mixture significantly affected the hydrophilicity and surface composition of PP. At F2 gas proportions of <70%, the hydrophilicity of the fluorinated PP samples improved. Notably, the hydrophilic and negatively charged PP surface enhanced the dyeing of the polymer with basic methylene blue (MB). In contrast, at F2 gas proportions of >90%, the PP surface became hydrophobic owing to increased hydrophobic -CF3 bonds. Thus, enhanced PP dyeing can be controlled based on the composition of the F2 and O2 gas mixture.

show abstract

Enhancement of the Surface Properties on Polypropylene Film Using Side-Chain Crystalline Block Copolymers

Cited by 4 publications

References 37 publications

Enhanced Dyeing of Polypropylene Using Fluorine–Oxygen Gas Mixtures

Enhanced Dyeing of Polypropylene Using Fluorine–Oxygen Gas Mixtures

Molding blends of silicone polymer / polypropylene with durable resistant to extreme conditions based on migration and compatibility of molecular chains

Enhanced Dyeing of Polypropylene Using Fluorine–Oxygen Gas Mixtures

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