文献类型：期刊文献

英文题名：Development of Agglomeration Process for Polybutadiene Latex Particles by Polymer Agglomerating Agent: Influence of Key Process Parameters on Particle Size, Shrinkage Rate and Kinetics

作者：Zhao, Li[1]; Lu, Shulai[2,3]; Chen, Ming[3,4]; Wang, Yuchao[3,4]; Ning, Lei[1]; Zhao, Shicheng[1]

机构：[1] Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] Jilin Petrochemical Company, PetroChina, Jilin, 132021, China; [3] PetroChina ABS Resin Technology R&D Center, Jilin, 132021, China; [4] Research Institute of Jilin Petrochemical Company, PetroChina, Jilin, 132021, China

年份：2024

外文期刊名：SSRN

收录：EI(收录号：20240342722)

语种：英文

外文关键词：Agglomeration - Coalescence - Kinetic parameters - Kinetic theory - Latexes - Polybutadienes - Shrinkage

摘要：The agglomeration of polybutadiene latex (PBL) is a complex process influenced by numerous factors. Up to now, the change of particle size of agglomerated PBL with time under varying conditions remains unclear, and the agglomeration kinetic model of PBL has not been proposed. In this study, the influence of the process parameters on the particle size of agglomerated PBL with time was studied, including the amount of agglomerating agent, temperature, stirring rate and solid content of PBL. According to the particle size evolution of agglomerated PBL, the agglomeration process of PBL is divided into two stages, including the dispersion of the agglomerating agent and its adsorption and coalescence with PBL (stage I), followed by the shrinkage of agglomerated PBL particles (stage II). It was found that the process of stage I can be accelerated significantly by increasing the amount of agglomerating agent and agglomeration temperature during PBL agglomeration, thereby reducing the total agglomeration time. The mean particle size of agglomerated PBL was also reduced when the agglomeration process reached stability. With the increase of stirring rate, the time required for agglomeration of PBL and the mean particle size of agglomerated PBL decrease. The higher the solid content of pre-agglomerate PBL, the shorter the time for PBL to complete the agglomeration, but it has no obvious effect on the mean particle size of agglomerated PBL. Based on the experimental results, on the one hand, a novel method for expressing the particle size shrinkage of agglomerated PBL was developed. This analysis was based on the change of mean particle size of agglomerated PBL with time. On the other hand, the Boltzmann equation was used to ?t the agglomeration kinetics of the whole process of PBL agglomeration. ? 2024, The Authors. All rights reserved.