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Study on PS Modification and Application in Pesticides Controlled Release

Author: SunXiaoWei
Tutor: TaiLiMin
School: Liaoning Technical University
Course: Materials Science
Keywords: Starch PS Compatibility Controlled release Degradability
CLC: TQ450.1
Type: Master's thesis
Year: 2008
Downloads: 49
Quote: 0
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Abstract


This experiment is to provide the starch / PS system, adding a compatibilizer EVA, MAH, ST-AA copolymer , ST-MMA copolymer and a ST-BA copolymer prepared a novel biodegradable material . Blended with carbendazim was prepared release agent . By scanning electron microscopy and DSC analysis testing the compatibility of blends , discusses the different starch content , compatibilizer type on system performance degradation and the release rate of pesticide delivery system impact study different pH and temperature on the delivery system impact and mechanical properties of the blends tested. Experimental results show that , EVA most obvious effect compatibilization ; starch / PS as a carrier having a release agent release effect both in solution pH9 , 31d of the starch / ST-AA/PS sustained release agent Percentage of 92.4935% ; temperature is 80 ℃ , the system the fastest release rate ; starch content is higher, the maximum degradation rate of blends up to 25.2881% ; IR spectra of PS MAH with graft reaction when PS: MAH = 0.95:0.05 , the grafting rate of the optimum value , is 2.2714% .

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CLC: > Industrial Technology > Chemical Industry > Pesticide Industry > General issues > Basic theory
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