A Novel Protocol for the Preparation of Uniform Polymer Microspheres with High Yields through Step Polymerization of Isophorone Diisocyanate

作者：Jiang, Xubao; Kong, Xiang Zheng; Zhu, Xiaoli^*

来源：Journal of Polymer Science Part A: Polymer Chemistry , 2011, 49(20): 4492-4497.

DOI：10.1002/pola.24890

• crosslinking
• particle size distribution
• polyurea
• precipitation polymerization
• synthesis

Uniform polymer microspheres with neat surface are of high interests. Precipitation polymerization of vinylic monomers remains a very limited process owing to very low monomer concentration allowed. Here, a fully novel protocol for the production of uniform polymeric microspheres is presented. Using one single monomer, isophorone diisocyanate, highly monodisperse polyurea microspheres were achieved with very high yield in a very short time period via precipitation polymerization in water-acetone mixed solvent. Results demonstrated that the ratio of water-acetone and polymerization temperature played important roles in the process. The size of the microspheres was readily adjustable by varying monomer concentration, water/acetone ratio or polymerization temperature.

• 出版日期2011-10-15
• 单位济南大学