| 淀粉/PVA囊化含羧基类除草剂的缓释性能 |
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| 引用本文： | 喻翠云,祝志峰,马玉龙,周新花.淀粉/PVA囊化含羧基类除草剂的缓释性能[J].高分子材料科学与工程,2005,21(4):280-283. |
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| 作者姓名： | 喻翠云 祝志峰 马玉龙 周新花 |
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| 作者单位： | 1. 武汉大学化学与分子科学学院,湖北,武汉,430072
2. 江南大学国家浆料检测中心,江苏,无锡,214063 |
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| 基金项目： | 中国博士后科学基金资助项目 |
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| 摘 要： | 以2，4-二氯苯氧乙酸(2，4-D)和2，4，5-三氯苯氧乙酸(2，4，5-T)作为模型药物，通过测定囊药体系的水溶胀程度、栽药量、囊化效率和释放速率，研究了淀粉／PVA囊材对含羧基类除草剂的缓释特性，探讨了淀粉品种、PVA含量、PVA分子量、PVA醇解度和栽药量对该除草荆缓释性能的影响。实验结果表明。淀粉／PVA囊材的缓释性能明显优于原淀粉囊材。
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| 关 键 词： | 淀粉 聚乙烯醇 共混物 缓释 除草剂 囊化 |
| 文章编号： | 1000-7555(2005)04-0280-04 |
| 修稿时间： | 2004年2月2日 |
SLOW RELEASE BEHAVIORS OF CARBOXYLIC-CONTAINING HERBICIDES WITHIN STARCH/PVA MATRICE |
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| YU Cui-yun,ZHU Zhi-feng,MA Yu-long,ZHOU Xin-hua.SLOW RELEASE BEHAVIORS OF CARBOXYLIC-CONTAINING HERBICIDES WITHIN STARCH/PVA MATRICE[J].Polymer Materials Science & Engineering,2005,21(4):280-283. |
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| Authors: | YU Cui-yun ZHU Zhi-feng MA Yu-long ZHOU Xin-hua |
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| Affiliation: | YU Cui-yun~1,ZHU Zhi-feng~2,MA Yu-long~1,ZHOU Xin-hua~1 |
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| Abstract: | By encapsulating 2,4-dichlorophenoxyacetic or 2,4,5-trichlorophenoxyacetic acids within starches or starch/PVA matrice, the behaviors of the matrice for slow release were evaluated. The behaviors were evaluated in terms of swellability in water, herbicide content, encapsulation efficiency, and the rates of herbicides released. The influences of starch source, PVA content, molecular weights, hydrolysis degree of PVA, and herbicide content were investigated. It is demonstrated that the behaviors of starch/PVA matrix are superior to those of starch one. |
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| Keywords: | starch PVA blends herbicide encapsulation slow release |
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