Study of suspension grafting process of polypropylene

Liang, Fengchun; Yuan, Hao; Shao, Qing; Song, Wenbo

doi:10.1080/15685551.2018.1503147

Cited by 7 publications

(2 citation statements)

References 43 publications

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“…The grafting of acrylamide with chitosan was successfully achieved with a temperature of 55°C and above (Sun et al , 2019). The polymerisation time usually takes place at 60 min and above to obtain a maximum yield (Liang et al , 2018).…”

Section: Introductionmentioning

confidence: 99%

Effects of different polymerisation conditions using hybrid polymer on high turbidity suspensions

Ishak¹,

Murshed

Sabtu

et al. 2021

WJE

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Purpose In this study, new hybrid polymers composed of Zinc chloride (ZnCl2), acrylamide and chitosan were prepared at different ratios and temperatures. The effects of pH and polymer dosage were examined for different polymers to observe their efficiency in the removal of turbid water. The polymers’ zeta potential, morphology, elemental composition and functional groups were also identified and studied. Design/methodology/approach The free-radical polymerisation process was executed in the presence of N, N’-Methylene bis-acrylamide and potassium persulphate in one molar acrylamide solution. ZnCl2 and chitosan (CO) were later introduced into the suspension under nitrogen gas flow. Ratio and temperature were varied during polymerisation. The hybrid polymer produced, termed Polyacrylamide + chitosan oligosaccharide + zinc chloride (PAMCOZ), was analysed using Fourier transform infra-red spectroscopy attenuated total reflectance and scanning electron microscope with energy dispersive X-ray. The hybrid PAMCOZ was experimented with in high turbid kaolin suspension using jar testing analysis to see its ability as a coagulant. Findings The coagulation process using PAMCOZ with a ratio of 11 (3:2) at 70°C surrounding temperature showed a 100% reduction at pH 4 with 50 mg/L of the polymer. The functional groups present in ratio 11 polymer were hydroxyl, carbonyl, amide and methyl groups. In addition, several elements were spotted on the surface of PAMCOZ, such as zinc (Zn), carbon (C), chlorine (Cl), nitrogen (N) and oxygen (O). The effect of pH also demonstrated that PAMCOZ was unfavourable in an alkaline turbid water environment. Research limitations/implications Due to the research methodology approach, the research results may lack actual wastewater application. Therefore, researchers are encouraged to test the hybrid coagulant on raw wastewater, such as pulp and paper mill effluent with a high turbidity value similar to this study. Originality/value The polymerisation between zinc chloride, acrylamide and chitosan has not yet been applied. The different ratios and effects of temperature were analysed on PAMCOZ to see the turbidity removal. PAMCOZ showed better turbidity removal in acidic conditions.

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Section: Introductionmentioning

confidence: 99%

Effects of different polymerisation conditions using hybrid polymer on high turbidity suspensions

Ishak¹,

Murshed

Sabtu

et al. 2021

WJE

View full text Add to dashboard Cite

show abstract

“…Suspension grafting [ 32 ] is a new, environment-friendly, and easy-to-industrialize method for grafting modification. This method usually employs water as the dispersion medium and polymer particles as the dispersed phase.…”

Section: Introductionmentioning

confidence: 99%

Preparation of PP-g-(AA-MAH) Fibers Using Suspension Grafting and Melt-Blown Spinning and its Adsorption for Aniline

Lian

Zuo

et al. 2020

Polymers

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This paper uses polypropylene (PP) as the matrix and acrylic acid (AA) and maleic anhydride (MAH) as functional monomers to prepare PP-g-(AA-MAH) fibers by suspension grafting and melt-blown spinning technology that are easy to industrially scale-up. The fibers can be used to adsorb aniline. Results showed that the grafting ratio reached the maximum of 12.47%. The corresponding optimal conditions were grafting time of 3 h, AA: MAH = 0.75, total monomer content of 55%, benzoyl peroxide 1.4%, xylene concentration of 6 mL/g PP, and deionized water content of 8 mL/g PP. Owing to its good fluidity and thermal stability, the product of suspension grafting can be used for melt-blown spinning. Infrared spectroscopic and nuclear magnetic resonance spectroscopic analyses indicated that AA and MAH were successfully grafted onto PP fibers. After grafting, the hydrophilicity of PP-g-(AA-MAH) fiber increased. Therefore, it had higher absorptivity for aniline and the adsorption capacity could reach 42.2 mg/g at 45 min and pH = 7. Moreover, the PP-g-(AA-MAH) fibers showed good regeneration performance.

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Styrene-assisted acrylic acid grafting onto polypropylene surfaces: preparation, characterization, and an automatically latex-coagulating application

et al. 2022

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Study of suspension grafting process of polypropylene

Cited by 7 publications

References 43 publications

Effects of different polymerisation conditions using hybrid polymer on high turbidity suspensions

Effects of different polymerisation conditions using hybrid polymer on high turbidity suspensions

Preparation of PP-g-(AA-MAH) Fibers Using Suspension Grafting and Melt-Blown Spinning and its Adsorption for Aniline

Styrene-assisted acrylic acid grafting onto polypropylene surfaces: preparation, characterization, and an automatically latex-coagulating application

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