Polymeric hollow fiber membrane for cooling crystallization seeding:On the mechanism of induced nucleation based on thermal transfer Author links open overlay panel  

作　　者：Zeman He Shaofu Du Guanying Shao Peiyu Li Lei Sheng Gaohong He Xiaobin Jiang Wu Xiao 

机构地区：[1]State Key Laboratory of Fine Chemicals,School of Chemical Engineering,Engineering Laboratory for Petrochemical Energy-efficient Separation Technology of Liaoning Province,Dalian University of Technology,Dalian 116024,China

出　　处：《Particuology》2024年第8期38-49,共12页颗粒学报（英文版）

基　　金：support from National Natural Science Foundation of China(grant No.22021005,22378041);National Key Research and Development Program of China(grant No.2021YFC2901300);Central Guidance on Local Science and Technology Development Fund of Liaoning Province(grant No.2023JH6/100100004);Fundamental Research Fundamental Funds for the Central Universities(grant No.DUT22LAB603,DUT22QN209);Key Research and Development Projects in Shandong Province(grant No.2022CXGC010303);acknowledge the assistance of DUT Instrumental Analysis Center.

摘　　要：Cooling crystallization is an important separation process and particuology technology that requires accurate nucleation control strategies.Herein,we introduced the polymeric hollow fiber membrane with proper thermal properties as the effective nucleation induction interface during cooling crystallization.The heterogeneous nucleation control mechanism was introduced based on classical nucleation theory and the thermal transfer process.Interfacial properties and the thermal conductivity of two kinds of polymeric membranes,polytetrafluoroethylene(PTFE)and polyethersulfone(PES),were measured and simulated with the developed model.These two membranes possessed different nucleation induction periods,nucleation rates and crystallization performances,which validated that the hollow fiber membrane module could effectively accelerate the nucleation process compared to conventional cooling crystallization owing to the shorter nucleation induction period and the reduced solution surface tension.Due to the higher hydrophobicity and the lower roughness of the membrane surface,the PTFE membrane possessed a more moderate performance in generating stable heterogeneous nucleation than the one of PES membrane.Thus,the adjustable membrane property enabled the hollow fiber membrane-assisted cooling crystallization to possess the accurate nucleation control and desired terminal particle products.

关 键 词：Cooling crystallization NUCLEATION Particle process Hollow fiber membrane Induction period Process control 

分 类 号：TB43[一般工业技术]