Synthesis of Multicomponent Amphiphilic Conetwork Hydrogels Based on Polycaprolacton and PEG via Click Chemistry for 2, 4-D Herbicide delivery

A series of star shaped hydrophobic polycaprolactone (PCL) and hydrophilic polyethylene glycol multicomponent amphiphilic conetworks (APCN) have been synthesized via the combination of ring opening polymerization and click chemistry. Azido terminated four arm star-shaped PCL, alkyne functionalized pentaerythritol, Azido terminated PEG and alkyne-terminated PEG are characterized by 1H NMR and FTIR. The fidelity of coupling chemistry was comfirmed using ATR-FTIR data and the SEM images showed 3D networks of prepared hydrogels. Swelling degree of APCNs is determined both in water and organic solvent. Release investigation of 2, 4-D herbicide performed in water and finally degradation of APCNs was studied in soil

Keywords:

Amphiphilic conetwork , Hydrogel , Click Chemistry , Herbicide