Abstract
Carbon black (CB) particles tend to aggregate in aqueous solutions, and finding an optimum dispersing condition (e.g., selection of the type of dispersant) is one of the important tasks in related industries. In the present study, three types of styrene maleic acid (SMA) copolymer dispersants were synthesized, labeled respectively ‘SMA-1000’, ‘SMA-2000’, and ‘SMA-3000’, which have 1, 2, and 3 styrene groups in their repeating units. Then, asymmetrical flow field-flow fractionation (AsFlFFF) was employed to measure the particle size distributions of the aqueous CB dispersions. For the particle size analysis of the CB dispersions, dynamic light scattering (DLS) showed relatively lower reproducibility than AsFlFFF. AsFlFFF showed that the use of SMA-3000 yielded a CB dispersion with the most uniform particle size distribution. When the SMA-3000 dispersant was used, the particle size tended to increase after 1 h of milling as the milling time increased, probably due to the re-agglomeration of the particles by excessive milling. The particle size distributions from AsFlFFF were consistent with the colorimetric observations. With the SMA-3000 dispersant, the lowest L∗ value was observed after 1 h of milling. The AsFlFFF and colorimetric analyses suggest that a stable CB dispersion can be obtained by either 3-h of milling with the SMA-2000 or 1-h of milling with the SMA-3000.
Funder
National Research Foundation of Korea
Innopolis Foundation
Subject
Polymers and Plastics,General Chemistry
Reference37 articles.
1. Reinforcement of Rubbers by Carbon Black Fillers Modified by Hydrocarbon Decomposition;Dai;J. Ind. Eng. Chem.,2007
2. Effect of Carbon Black Dispersion on the Mechanical Properties of Rubber Vulcanizates;Boonstra;Rubber Chem. Technol.,1963
3. Electrical Conduction in Carbon Black Composites;Medalia;Rubber Chem. Technol.,1986
4. Carbons as supports for industrial precious metal catalysts;Auer;Appl. Catal. A Gen.,1998
5. Micellization of Polyoxyalkylene Block Copolymers in Formamide;Alexandridis;Macromolecules,2000
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献