Grafting dual polar monomers onto hydroperoxidized polypropylene with the assistant of supercritical carbon dioxide

IF 0.125 Applied Petrochemical Research Pub Date : 2017-11-11 DOI:10.1007/s13203-017-0190-5

Dengfei Wang, Jian Wang

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引用次数: 2

Abstract

A hydroperoxidized polypropylene (HPP) was obtained by oxidizing PP porous particle in solid phase, followed by impregnating dual polar monomers of pentaerythritol triacrylate (PETA) and styrene (St) into the HPP with the aid of supercritical carbon dioxide (scCO₂). Then, HPP was used as polymerization initiators and PETA/St were grafted onto microporous PP backbone in water medium. Effects of hydroperoxidation temperature, time, oxidant dosage and PP diameter on hydroperoxides concentration and G _p and G _e were illustrated systematically. Besides, effects of scCO₂ swell time, pressure, monomers concentration and ratio, grafting reaction time and temperature on G _p and G _e were also examined. Results showed that G _p can be easily controlled by changing process conditions; G _e was observed to be greater than 90% in most of the cases. Gel content of grafted samples was also determined. The structures and thermal properties of grafted copolymers were characterized through FTIR, SEM, TGA and DSC.

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在超临界二氧化碳的辅助下，将双极性单体接枝到加氢过氧化聚丙烯上

将聚丙烯多孔颗粒在固相氧化，然后在超临界二氧化碳(scCO2)的辅助下将季戊四醇三丙烯酸酯(PETA)和苯乙烯(St)的双极性单体浸渍在HPP中，制得加氢过氧化聚丙烯(HPP)。然后以HPP为引发剂，在水介质中将PETA/St接枝到微孔PP骨架上。系统阐述了氢过氧化温度、时间、氧化剂用量和PP直径对氢过氧化物浓度、G和G e的影响。此外，还考察了scCO2膨胀时间、压力、单体浓度和配比、接枝反应时间和温度对G - p和G - e的影响。结果表明，通过改变工艺条件可以很容易地控制G p;在大多数病例中，G≥90%。同时测定了接枝样品的凝胶含量。通过FTIR、SEM、TGA和DSC对接枝共聚物的结构和热性能进行了表征。

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来源期刊

Applied Petrochemical Research ENGINEERING, CHEMICAL-

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0.00%

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审稿时长

13 weeks

期刊介绍： Applied Petrochemical Research is a quarterly Open Access journal supported by King Abdulaziz City for Science and Technology and all the manuscripts are single-blind peer-reviewed for scientific quality and acceptance. The article-processing charge (APC) for all authors is covered by KACST. Publication of original applied research on all aspects of the petrochemical industry focusing on new and smart technologies that allow the production of value-added end products in a cost-effective way. Topics of interest include: • Review of Petrochemical Processes • Reaction Engineering • Design • Catalysis • Pilot Plant and Production Studies • Synthesis As Applied to any of the following aspects of Petrochemical Research: -Feedstock Petrochemicals: Ethylene Production, Propylene Production, Butylene Production, Aromatics Production (Benzene, Toluene, Xylene etc...), Oxygenate Production (Methanol, Ethanol, Propanol etc…), Paraffins and Waxes. -Petrochemical Refining Processes: Cracking (Steam Cracking, Hydrocracking, Fluid Catalytic Cracking), Reforming and Aromatisation, Isomerisation Processes, Dimerization and Polymerization, Aromatic Alkylation, Oxidation Processes, Hydrogenation and Dehydrogenation. -Products: Polymers and Plastics, Lubricants, Speciality and Fine Chemicals (Adhesives, Fragrances, Flavours etc...), Fibres, Pharmaceuticals.