Synthesis and Characterizations of Graft Copolymer of Ethylcellulose with Poly(caprolactone monoacrylate)

Wang, Dongshan; Chen, Changzhong; Xuan, Yingnan; Huang, Yong; Shen, Jing

doi:10.1295/polymj.pj2008032

Cited by 1 publication

(1 citation statement)

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“…EC has been used in pill coatings [12][13] and fertilizer coatings due to its excellent fi lm-forming abilities and hydrophobicity 14 . However, EC is often used with plasticizers and modifi ed by copolymerization with different monomers such as caprolactone monoacrylate 15 and polystyrene 16 to reduce its fragility. Plasticizers can easily escape from EC fertilizer coating materials and are harmful to the environment.…”

Section: Introductionmentioning

confidence: 99%

Controlled-release urea encapsulated by ethyl cellulose/butyl acrylate/vinyl acetate hybrid latex

Zhen

Liao

et al. 2018

Polish Journal of Chemical Technology

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Fertilizer encapsulation through polymer membranes can reduce fertilizer losses and minimize environmental pollution. In this paper, an emulsion of ethyl cellulose (EC)/vinyl acetate (VAc)/butyl acrylate (BA) was successfully prepared by pre-emulsifi ed semi-continuous seed emulsion polymerization. EC/BA/VAc fi lms showed biodegradability. The infl uence of the EC content on the properties of EC/BA/VAc fi lms was also investigated by DSC, a water absorbency analysis, etc. Controlled-release urea encapsulated by EC/BA/VAc latex was prepared in a fi lm coating machine and conformed to the standards for slow-release fertilizers of the Committee of European Normalization. The release of urea from controlled-release urea encapsulated by EC/BA/VAc latex containing 0%, 5%, 10%, and 15% EC was 75.1%, 65.8%, 70.1% and 84.1%, respectively, after 42 days, and controlled-release urea encapsulated by EC/BA/VAc latex (5% EC) had the best controlled-release ability. Therefore, controlled-release urea encapsulated by EC/BA/VAc latex has many potential applications in agricultural industry.

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Section: Introductionmentioning

confidence: 99%