1、Aspects of the thermal oxidation, yellowing and stabilisation of

In this study we have undertaken a comparative thermal and spectroscopic analysis of the oxidation of typical 17 and 28% EVA copolymers. Impurity α, β-unsaturated carbonyl groups are shown to be present in the EVA, possibly as part of the ethylene blocks.

2、Atmospheric Oxidation of Vinyl and Allyl Acetate: Product Distribution

Abstract The products formed from the reactions of OH radicals with vinyl acetate and allyl acetate have been studied in a 1080 L quartz-glass chamber in the presence and absence of NO x using in situ FTIR spectroscopy to monitor the reactant decay and product formation.

3、Thermal Oxidation of Polyethylene and Ethylene–Vinyl Acetate Copolymers

A study has been carried out that is devoted to the analysis of thermal oxidation of high-pressure polyethylene and ethylene–vinyl acetate copolymer in the presence of petroleum polymer resins.

4、Is Vinyl Acetate Susceptible to Oxidation?

While vinyl acetate is susceptible to oxidation, it remains相对稳定 under normal ambient conditions (room temperature and atmospheric pressure), showing no significant spontaneous decomposition or vigorous reactions with other substances.

5、The thermal degradation of poly (vinyl acetate) and poly (ethylene

In this experimental study, a mechanistic investigation is performed on the thermal degradation of PVAc and both semi-crystalline and amorphous EVA with mass percentage vinyl acetate in the polymer backbone ranging from 9 to 73 wt.% in inert and oxidative conditions.

Aspects of the thermal oxidation of ethylene vinyl acetate

The thermal oxidation of ethylene-vinyl acetate copolymer [EVA-17 and 28% w/w VA (vinyl acetate) units] has been examined by thermo-gravimetric and hydroperoxide analysis, FTIR (Fourier transform infra-red) fluorescence spectroscopy and yellowness index.

Kinetics and Mechanism of the Tropospheric Oxidation of Vinyl Acetate

Vinyl acetate [VA (CH 3 COOC 2 H 3)] is an important unsaturated and oxygenated volatile organic compound responsible for atmospheric pollution. In this work, possible reaction mechanisms for the degradation of OH-initiated atmospheric oxidation of VA are investigated.

Atmospheric Reactivity of Vinyl Acetate: Kinetic and

Kinetic and mechanistic experiments have been conducted at room temperature and atmospheric pressure using an indoor Pyrex simulation chamber coupled to Fourier transform infrared (FTIR) and...

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Abstract Although esters in general have received much attention over the last decade of combustion research, the combustion of vinyl esters have yet not been studied in detail. Recent studies on ethyl acetate show that vinyl acetate is a major intermediate but its combustion is not well understood.

Thermal Oxidation of Ethylene Copolymer with Vinyl Acetate in the

The influence of petroleum resin on the thermal oxidation of an ethylene copolymer with vinyl acetate was studied with differential scanning calorimetry, FTIR infrared spectroscopy, and physicomechanical tests.

Vinyl Acetate Oxidation Temperature In the chemical industry, temperature control of chemical reactions is crucial for ensuring product quality, improving production efficiency, and safeguarding equipment safety. The oxidation reaction of vinyl acetate serves as a typical example, involving complex chemical processes and precise temperature regulation. This article explores in depth the oxidation temperature of vinyl acetate and its impact on reaction performance.

I. Overview of Vinyl Acetate Oxidation Reaction

Vinyl acetate is an essential organic chemical raw material widely used in plastics, coatings, adhesives, and other fields. Its oxidation reaction is a key step in preparing vinyl acetate derivatives. This reaction typically requires high-temperature conditions to accelerate the reaction rate and enhance product selectivity. excessively high temperatures may trigger side reactions, reducing the yield of the target product or generating unwanted byproducts. precise temperature control is critical to obtaining high-quality products.

II. Impact of Oxidation Temperature on Reaction Performance

1. Reaction Rate: Elevated temperatures generally increase reaction rates by lowering activation energy, facilitating the formation and transformation of intermediate species. beyond a certain temperature range, thermal decomposition or increased side reactions may counteract this effect. Experimental determination is required to identify the optimal oxidation temperature, balancing reaction speed and selectivity.

2. Selectivity: In vinyl acetate oxidation, selectivity refers to the ratio of the target product to byproducts. Higher temperatures can improve target product proportions but may also elevate byproduct formation. Optimizing temperature not only enhances conversion rates but also maximizes target product yields.

3. Energy Consumption and Efficiency: While higher temperatures accelerate reactions, they also increase energy costs. Additionally, excessive heat may accelerate equipment wear and worsen operational conditions. Balancing efficiency with energy consumption and maintenance costs is therefore essential.

4. Safety: Temperature control directly affects both reaction efficiency and production safety. Overheating risks equipment damage, fires, or even explosions. Effective monitoring and control systems are mandatory to ensure temperatures remain within safe limits.

III. Temperature Control Strategies

To optimize vinyl acetate oxidation, several strategies should be implemented:

• Reactor Design: Adjusting reactor configurations to improve heat and mass transfer efficiency.
• Advanced Monitoring: Utilizing sensors and real-time control systems to regulate temperature dynamically.
• Process Optimization: Modifying raw material ratios, adding catalysts, or altering reaction conditions (e.g., pressure, stirring speed) to influence reaction kinetics and selectivity.

The oxidation of vinyl acetate is a complex yet critical chemical process influenced by factors such as temperature, raw material ratios, catalyst types, and reaction conditions. Precision temperature control optimizes performance, boosts conversion and selectivity, reduces energy costs, and mitigates risks, thereby ensuring high-quality vinyl acetate derivatives. Future research will further investigate the mechanisms of various factors affecting oxidation reactions and develop more efficient and safer technological processes to meet growing market demands.