Making glyphosate microcapsules by in-situ polymerization

LI Pei-xian; CHEN Min; XIE Ji-min; ZHU Jian-jun

Volume 25 Issue 3

Jun. 2018

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Article Navigation > Journal of Zhejiang A&F University > 2008 > 25(3): 350-354

LI Pei-xian, CHEN Min, XIE Ji-min, ZHU Jian-jun. Making glyphosate microcapsules by in-situ polymerization[J]. Journal of Zhejiang A&F University, 2008, 25(3): 350-354.

Citation:

LI Pei-xian, CHEN Min, XIE Ji-min, ZHU Jian-jun. Making glyphosate microcapsules by in-situ polymerization[J]. Journal of Zhejiang A&F University, 2008, 25(3): 350-354.

Making glyphosate microcapsules by in-situ polymerization

1.
College of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China

Received Date: 2007-06-04
Rev Recd Date: 2007-09-07
Publish Date: 2008-06-10

Abstract

Microcapsules of glyphosate were made by the method of in-situ polymerization with urea-formaldehyde resin as the outer membrane. The effects of reaction parameters on particle size, distribution and structure were studied. Encapsulation efficiency and controlled release were characterized. Optimal reaction conditions were as follows: acidification time being 4 h, endpoint pH being 2.0, curing temperature being 70 ℃, curing time being 2 h, mixing rate being 2 000 r·min-1, acid catalyst being NH4Cl and suitable emulsion being styrene maleic anhydride(SMA). Under those conditions, solid, spherical microcapsules were formed with decentralization of 1-10 μm, the encapsulation efficiency was 91.9% and it had excellent controlled release properties. These results suggested that the microcapsules could fully meet the needs of practical applications.
- plant protection,
- glyphosate,
- microcapsule,
- in-situ polymerization,
- urea-formaldehyde resin

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Making glyphosate microcapsules by in-situ polymerization

1. College of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China

Received Date: 2007-06-04

Rev Recd Date: 2007-09-07

Publish Date: 2008-06-10

Key words:

Abstract: Microcapsules of glyphosate were made by the method of in-situ polymerization with urea-formaldehyde resin as the outer membrane. The effects of reaction parameters on particle size, distribution and structure were studied. Encapsulation efficiency and controlled release were characterized. Optimal reaction conditions were as follows: acidification time being 4 h, endpoint pH being 2.0, curing temperature being 70 ℃, curing time being 2 h, mixing rate being 2 000 r·min-1, acid catalyst being NH4Cl and suitable emulsion being styrene maleic anhydride(SMA). Under those conditions, solid, spherical microcapsules were formed with decentralization of 1-10 μm, the encapsulation efficiency was 91.9% and it had excellent controlled release properties. These results suggested that the microcapsules could fully meet the needs of practical applications.

Making glyphosate microcapsules by in-situ polymerization

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Related

Proportional views