By: Zhuo Renxi; Huang Long ;Zhu
Zhifeng
Herbicides 2, 4, 5- T(2, 4, 5 - trichlorophenoxyacetic acid) , 2, 4 - D(2, 4 dichlorophenoxyacetic acid) and dicamba(3, 6 - dichloro - o - anisic acid) were individually encapsulated into crosslinked carboxymethylcellulose (CMC) for the evaluation of their controlled release properties. The release rate of the herbicides into water was greatly influenced by sample form, degree of substitution(DS) of CMC,water solubillity of the herbicides, kind and amount of crosslinking agents and condition for preparing samples. A better controlled release system was achieved by usinggranular sample prepared from the formaldehyde crosslinked CMC with lower DS.
Herbicides 2, 4, 5- T(2, 4, 5 - trichlorophenoxyacetic acid) , 2, 4 - D(2, 4 dichlorophenoxyacetic acid) and dicamba(3, 6 - dichloro - o - anisic acid) were individually encapsulated into crosslinked carboxymethylcellulose (CMC) for the evaluation of their controlled release properties. The release rate of the herbicides into water was greatly influenced by sample form, degree of substitution(DS) of CMC,water solubillity of the herbicides, kind and amount of crosslinking agents and condition for preparing samples. A better controlled release system was achieved by usinggranular sample prepared from the formaldehyde crosslinked CMC with lower DS.
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