Kinetics and modeling of free radical polymerization of N -vinylformamide

Gu, Leilei; Zhu, Shiping; Hrymak, Andrew N.; Pelton, Robert

doi:10.1016/s0032-3861(00)00654-6

Cited by 51 publications

(66 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Therefore, it may be assumed that the initiator concentration affects the decrease of the rate constant in this diffusion-controlled reaction. Similar observations were made for bulk and solution polymerization of Nvinylformamide by Gu et al [24] and in other diffusion-controlled polymerizations [12,13,[24][25][26][27][28]. The kinetic parameters depend on the reaction temperature only and remain constant at the same reaction temperature and various initiator loadings.…”

Section: Resultssupporting

confidence: 81%

“…The differences were attributed to other used monomer. The values of Θ p and Θ t (CCS algorithm) parameters are different from values obtained for N-vinylformamide bulk polymerization [24] where a similar algorithm for apparent rate constant calculation was used. The differences are attributed to different used monomer, lower reaction temperature and different type of used initiator.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Comparison of two algorithms for calculation of the apparent rate constant in the kinetic modelling of diallyl terephthalate bulk polymerization

Hace¹

2005

E-Polymers

View full text Add to dashboard Cite

Abstract:In the present study a comparison was made of two most frequently used algorithms for calculation of the apparent rate constant in the kinetic modelling of bulk cross-linking diallyl terephthalate (DAT) polymerization with four different peroxide initiators, bis(4-tert-butylcyclohexyl) peroxydicarbonate, dicyclohexyl peroxydicarbonate, benzoyl peroxide and dicumyl peroxide, in the temperature range from 50 to 150°C and at three different initiator loadings. The first algorithm is the CCS algorithm developed by Chiu, Carratt and Soong and the second is the S algorithm developed by Smoluchowski. Only two kinetic parameters had to be found by fitting a previously proposed kinetic model for bulk DAT polymerization, developed by Hace et al., to measured conversion points. Conversions and other necessary physico-chemical properties used for kinetic modelling were obtained from our previous kinetic studies on DAT polymerization.

show abstract

Section: Resultssupporting

confidence: 81%

Section: Resultsmentioning

confidence: 99%

Comparison of two algorithms for calculation of the apparent rate constant in the kinetic modelling of diallyl terephthalate bulk polymerization

Hace¹

2005

E-Polymers

View full text Add to dashboard Cite

show abstract

“…Furthermore, PNVF has been introduced as a replacement for acrylamide polymers for industrial application. The potential uses of PNVF and its hydrolyzed products have been demonstrated in the areas of papermaking, water treatment, coatings, rheology modifiers, and in the oil field industry [72].…”

Section: Poly(n-vinyl Formamide)mentioning

confidence: 99%

Applications of Water-Soluble Polymers in Turbulent Drag Reduction

2017

View full text Add to dashboard Cite

Water-soluble polymers with high molecular weights are known to decrease the frictional drag in turbulent flow very effectively at concentrations of tens or hundreds of ppm. This drag reduction efficiency of water-soluble polymers is well known to be closely associated with the flow conditions and rheological, physical, and/or chemical characteristics of the polymers added. Among the many promising polymers introduced in the past several decades, this review focuses on recent progress in the drag reduction capability of various water-soluble macromolecules in turbulent flow including both synthetic and natural polymers such as poly(ethylene oxide), poly(acrylic acid), polyacrylamide, poly(N-vinyl formamide), gums, and DNA. The polymeric species, experimental parameters, and numerical analysis of these water-soluble polymers in turbulent drag reduction are highlighted, along with several existing and potential applications. The proposed drag reduction mechanisms are also discussed based on recent experimental and numerical researches. This article will be helpful to the readers to understand better the complex behaviors of a turbulent flow with various water-soluble polymeric additives regarding experimental conditions, drag reduction mechanisms, and related applications.

show abstract

“…The wall thickness of the support is 0.08 mm. PVAm is produced with base hydrolysis of Poly (N-vinylformamide) (PNVF) process and PNVF is produced by the reaction of acetaldehyde and formamide (Gu et al, 2001;Witek et al, 2007). Thus, the chemicals used for membrane preparation can be estimated based on the total membrane area obtained from …”

Section: Key Parameters and Assumptionsmentioning

confidence: 99%

Post-combustion carbon capture technologies: Energetic analysis and life cycle assessment

Zhang

Singh

et al. 2014

International Journal of Greenhouse Gas Control

View full text Add to dashboard Cite

An integrated framework focusing on the energetic analysis and environmental impacts of a CO2 capture and storage (CCS) system is presented, in which the process simulation method and the life cycle assessment (LCA) method are integrated and applied to the CCS value chain.Three scenarios for carbon capture from post-combustion power plant -an MEA-based system, a gas separation membrane process and a hybrid membrane-cryogenic process are studied. The energy efficiency of power plant and the specific capture energy consumption for each scenario are estimated from process simulation. The environmental impacts for each scenario and the base case without CCS are assessed with LCA method. The results show that the MEA-based capture system faces the challenges of higher energy consumption, and higher environmental impact caused by solvent degradation and emissions compared to gas membrane separation processes. The hybrid membrane-cryogenic process shows a better environmental potential for CO2 capture from flue gases due to much lower power consumption and relatively lower environmental impacts.

show abstract

Kinetics and modeling of free radical polymerization of N -vinylformamide

Cited by 51 publications

References 14 publications

Comparison of two algorithms for calculation of the apparent rate constant in the kinetic modelling of diallyl terephthalate bulk polymerization

Comparison of two algorithms for calculation of the apparent rate constant in the kinetic modelling of diallyl terephthalate bulk polymerization

Applications of Water-Soluble Polymers in Turbulent Drag Reduction

Post-combustion carbon capture technologies: Energetic analysis and life cycle assessment

Contact Info

Product

Resources

About