Simulation of hydrolytic polymerization of .epsilon.-caprolactam in various reactors. A review on recent advances in reaction engineering of polymerization

Tai, Kazuo; Tagawa, Takashi

doi:10.1021/i300010a007

Cited by 51 publications

(37 citation statements)

References 72 publications

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“…In this current review we have predicted the best energy saving model fo r nylon 6 poly merizat ion spinning process by applying fuzzy modeling 19,20,21,22 . Indeed, the results also show that the change of fuzzy membership function affects the prediction accuracy of the rate of polymerization.…”

Section: Discussionmentioning

confidence: 99%

Applying of Fuzzy Logic Interface in Nylon Fiber Production

Singha¹,

Singha²

2013

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The nylon fiber by its high strength and modulus is becomes a potential option for many applications like general technical text ile, high performance uses, nanotechnology material as a reinforced co mposite formu lation and nanocrisper. The production of nylon fiber can be easily predicted and perform at an accurate level of energy saving with the help of using fuzzy logic interface. The circulation o f hot/cold oil flow which has normally used as the fuel to increase the temperature of the nylon fiber reactor can be precisely checked by fu zzy logic data. The pressure and temperature of the reactor can be also controlled by this process of adding fuzzy intelligence or simulat ion in the chamber of the nylon fiber production reactor.

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Section: Discussionmentioning

confidence: 99%

Applying of Fuzzy Logic Interface in Nylon Fiber Production

Singha¹,

Singha²

2013

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“…Kinetic and thermodynamic constants for the polymerization of caprolactam have been summarized ( [56], Table 3) and have been said to correlate with manufacturing experience with a deviation of less than 12 wt% [58]. The data in Table 3 are averaged for initial water contents of 0.82 and 1.18 mol/ kg (1.48 and 2.12 wt%).…”

Section: Equilibrium and Rate Constantsmentioning

confidence: 99%

“…Improved processes include a baffled hydrolyzer operating in plug flow and at a carefully controlled temperature [171] and a two-stage hydrolyzer [172]. The simulation and optimization of the hydrolytic polymerization of caprolactam have been attempted [58,173,174]. Lack of detailed manufacturing data has been indicated to prevent confirmation of the analysis.…”

Section: Pamentioning

confidence: 99%

Polyamides

Herzog¹,

Kohan²,

Mestemacher³

et al. 2013

Ullmann's Encyclopedia of Industrial Chemistry

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The article contains sections titled: 1. Introduction 2. Nomenclature 3. General Considerations in Polyamidation 3.1. Molecular Mass 3.2. Equilibrium and Rate Constants 3.3. Effects of Monomer Structure 3.4. Amide Interchange 3.5. Structure‐Property Considerations 4. Other Polymerization Techniques 4.1. Variants of Hydrolytic Polymerization 4.2. Interfacial and Solution Polymerization 4.3. Ionic Polymerization 4.4. Solid‐Phase Polymerization 5. Commercial Processes 5.1. PA 46 5.2. PA 66 5.2.1. Batch Production 5.2.2. Continuous Production 5.3. Other AABB‐Polyamides 5.4. PA 6 5.5. PA 11 5.6. PA 12 6. Properties 6.1. Properties of Unmodified Polyamides 6.2. Copolymerization 6.3. Modification by Additives 6.3.1. Filled and Reinforced Polyamides 6.3.2. Blends and Alloys 6.3.3. Flame‐Retardant Polyamides 6.3.4. Conductive Polyamides 6.3.5. Other Formulations 7. Processing 8. Uses 9. Ecological Aspects and Toxicology 9.1. Recycling 9.2. Polyamide Monomers 9.3. Other Aspects 10. Economic Aspects

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“…Chain growth occurs through direct condensation and not interchange; therefore, values of ␥ less than 1 are possible. Using the direct condensation rate data of Tai 33 and literature values for the interchange rate constants, values of ␥ in polyamide systems may be estimated. Han's data 34 on aminolysis at 200°C yield ␥ b ϭ 0.0045.…”

Section: Chain-length Distributions In Continuous Processesmentioning

confidence: 99%