A microreactor-based research for the kinetics of polyvinyl butyral (PVB) synthesis reaction

Lin, Xiyan; Wang, Kai; Zhou, Baiyang; Luo, Guangsheng

doi:10.1016/j.cej.2019.123181

Cited by 22 publications

(14 citation statements)

References 23 publications

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“…Polymerization reactions are one of the good examples of homogeneous reactions conducted using a microreactor. According to Lin et al [55], the commercial method of homogeneous polymerization suffers from difficulties in mixing highly viscous polymeric solutions and meeting the high-quality demand of the final product, thus inducing the researchers to approach the microscale method using miniature devices. Song et al [56] synthesized a high-molecular-weight polymer (polyacrylamide, PAM) using a microreactor made of a Teflon tube with an inner diameter of 1.0 mm.…”

Section: Homogeneous Reactions In Microreactorsmentioning

confidence: 99%

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Heterogeneous Microfluidic Reactors: A Review and an Insight of Enzymatic Reactions

2022

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Heterogeneous reactions are considered the heart of chemical synthesis with numerous industrial applications due to their high conversion rates and low reaction time. On the other hand, the performance of heterogeneous reactions suffers from several drawbacks such as lower product selectivity and high mass transfer resistance that, in many cases, reduce the reaction rate. The efficiency of various conventional mixing techniques in heterogeneous reactors is believed to play a critical role in controlling the product quality and mass transfer rates besides other essential factors. Microfluidics technology provides a unique opportunity to revisit many established heterogeneous reaction processes to optimize and understand the reaction mechanisms. The unique flow conditions in microflow systems provide an excellent platform for exploring the effect of high‐precision micromixing techniques on reaction rates and productivities. Recent advances in microreactor technology in general and specifically heterogeneous reactions in microflow systems with an insight on the enzymatic reactions in microreactors are reviewed.

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Section: Homogeneous Reactions In Microreactorsmentioning

confidence: 99%

“…According to Lin et al. 55, the commercial method of homogeneous polymerization suffers from difficulties in mixing highly viscous polymeric solutions and meeting the high‐quality demand of the final product, thus inducing the researchers to approach the microscale method using miniature devices. Song et al.…”

Section: Homogeneous Reactions In Microreactorsmentioning

confidence: 99%

Heterogeneous Microfluidic Reactors: A Review and an Insight of Enzymatic Reactions

2022

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“…Consequently, the addition of a certain amount of surfactant is typically necessary to achieve excellent performance in PVB preparation. 12 Qin and Cheng 13 synthesized PVB using sodium lauryl sulfate surfactant and found that their homemade PVB had a higher molecular weight, a higher viscosity, and a higher degree of acetal compared to commercial PVB. Mohammadian-Kohol et al 14,15 synthesized PVB with sodium dodecyl sulfate surfactant, resulting in PVB with high mechanical strength.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Sodium Dodecyl Sulfonate from Aqueous Solution by Polyvinyl Butyral: Kinetics and Thermodynamics

Sun

Zeng

2023

Ind. Eng. Chem. Res.

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During the synthesis of polyvinyl butyral (PVB), sodium dodecyl sulfonate (SDS) is generally added in appropriate amounts, which prevents PVB from agglomeration but also causes PVB to turn yellow. The removal of SDS and its final residue in PVB are closely related to the adsorption performance of SDS on PVB. In this study, PVB with a high acetal degree (81.96 mol %) was synthesized by polyvinyl alcohol and butyraldehyde and was characterized by 1H NMR, Fourier transform infrared spectroscopy, scanning electron microscopyenergy-dispersive X-ray spectroscopy, and other methods. The adsorption properties of SDS on PVB were investigated under different initial pHs, PVB doses, PVB particle sizes, contact times, initial SDS concentrations, and temperatures. The adsorption kinetic data were analyzed using pseudo-first-order, pseudo-second-order, Elovich, and intraparticle diffusion models. The results showed that the pseudo-second-order model fitted the adsorption data well, and the intraparticle diffusion was not the only control mechanism for PVB adsorption. The equilibrium data were analyzed with Langmuir, Freundlich, Temkin, and Dubinin–Radushkevich models. The results showed that the adsorption data conformed to the Langmuir model, and the maximum adsorption capacity of PVB for SDS was 40.5168 mg/g at 290.15 K. Moreover, the Dubinin–Radushkevich model illustrated that the adsorption process was chemisorption at low SDS concentrations and physical adsorption otherwise. The thermodynamic parameters showed that the adsorption of SDS on PVB was spontaneous and exothermic. In conclusion, the research results provide some basis for the PVB purification plant equipment.

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“…[7][8][9][10] Meanwhile, pressure drop and high viscosity should be paid attention to for flow chemistry. A microreactor allows for broad applications in organic synthesis, [11][12][13][14][15][16][17] extraction, [18][19][20][21] solution polymerization, [22][23][24][25][26][27] etc. The design of a novel microreactor has attracted growing interest from both academia and industry.…”

Section: Introductionmentioning

confidence: 99%

Anionic polymerizations in a microreactor

Zhao

Wang

et al. 2022

React. Chem. Eng.

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A microreactor-based research for the kinetics of polyvinyl butyral (PVB) synthesis reaction

Cited by 22 publications

References 23 publications

Heterogeneous Microfluidic Reactors: A Review and an Insight of Enzymatic Reactions

Heterogeneous Microfluidic Reactors: A Review and an Insight of Enzymatic Reactions

Adsorption of Sodium Dodecyl Sulfonate from Aqueous Solution by Polyvinyl Butyral: Kinetics and Thermodynamics

Anionic polymerizations in a microreactor

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