title: Starch-based hydrogel loading with carbendazim for controlled-release and water absorption.
abstract: Starch, with properties of eco-friendliness and abundance, is one of the most important natural polymers. Starch-based hydrogels were investigated as carriers of carbendazim to combine controlled-release and water absorption (WA). Three carbendazim-loaded hydrogels (CLHs) with different WA capacities were prepared by solution polymerization. The CLHs were characterized by Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and liquid-chromatography mass-spectrometry (LC-MS/MS). Release kinetics of CLHs was investigated using (14)C-labeling method. The diffusion parameters of CLHs were 0.47, 0.57 and 0.81 in deionized H2O (ddH2O). WA affected release profile significantly, the release longevity reaching 240 h when WA was 800 g/g in ddH2O. Solution pH influenced release profiles and the lowest release rate occurred in the lowest pH. Addition of CLH (1.3g/kg soil) markedly increased water-holding capacity (WHC) of soil by 8.2%. The study indicated that starch-based CLH was a good controlled-release agent for carbendazim and water absorbent for soil.
authors: Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agricultural, Zhejiang University, Hangzhou 310029, China.
authors: Chan
authors: C
authors: Bai
authors: Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agricultural, Zhejiang University, Hangzhou 310029, China.
authors: Sufen
authors: S
authors: Zhang
authors: Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agricultural, Zhejiang University, Hangzhou 310029, China.
authors: Lei
authors: L
authors: Huang
authors: Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agricultural, Zhejiang University, Hangzhou 310029, China.
authors: Haiyan
authors: H
authors: Wang
authors: Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agricultural, Zhejiang University, Hangzhou 310029, China.
authors: Wei
authors: W
authors: Wang
authors: Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agricultural, Zhejiang University, Hangzhou 310029, China. Electronic address: qfye@zju.edu.cn.
authors: Qingfu
authors: Q
authors: Ye
mesh_terms: D065966:Absorption, Physicochemical; D000935:Antifungal Agents / Q000737:chemistry*; D001562:Benzimidazoles / Q000737:chemistry*; D002219:Carbamates / Q000737:chemistry*; D065546:Drug Liberation; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate / Q000138:chemical synthesis* / Q000737:chemistry; D012987:Soil / Q000737:chemistry; D013213:Starch / Q000737:chemistry*; D014867:Water / Q000737:chemistry
chemical_list: D000935:Antifungal Agents; D001562:Benzimidazoles; D002219:Carbamates; D012987:Soil; D014867:Water; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate; D013213:Starch; C006698:carbendazim
keywords: Acrylamide (PubChem CID:6579); Acrylic acid (PubChem CID:6581); Carbendazim; Carbendazim (PubChem CID:25429); Controlled-release; Methyl methacrylate (PubChem CID:6658); Rate; Starch (PubChem CID:439341); Starch-based hydrogel; Water absorption