Modification of Urea-Formaldehyde Microcapsules With Lignosulfonate-Ca as Co-Polymer for Encapsulation of Acetochlor

作者：Bai, Wenying; Wang, Yan^*; Song, Xiaoli; Jin, Xiaoyang; Guo, Xiaohong

来源：Journal of Macromolecular Science, Part A: Pure and Applied Chemistry , 2014, 51(9): 737-742.

DOI：10.1080/10601325.2014.936286

• lignosulfonate
• modification
• urea-formaldehyde microcapsule
• pesticide

Modification of the poly-urea-formaldehyde (UF) shell always interests formulators for obtaining special properties and applications of the microcapsules. Here, we were able to modify the UF shell with the biodegradable lignosulfonate-Ca as copolymer for encapsulation of acetochlor. The modified microcapsules were characterized by ultraviolet spectrophotometer (UV), laser particle size analyzer, Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM), respectively. Results showed 15% lignosulfonate-Ca substitution of urea benefits for higher encapsulation efficiency and finer particle size. Compared with the pure UF microcapsules, the modified shell surface became rougher with increasing lignosulfonate-Ca substitution of urea under 45%. We expect this modification approach will be applied by other fields besides pesticide manufacturing.

• 出版日期2014
• 单位吉林农业大学