血液高分子成膜剂性能表征及在种衣剂中的应用

动物血液富含各种植物生长需要的营养元素,通过将动物血液经过高分子化学处理后,与其他高分子结合形成具有高分子互穿网络结构的成膜剂,形成的成膜剂与各种农用活性化合物结合,可用于制备农用种衣剂,用该种衣剂处理种子,可以延长农用活性物的释放周期,减少用药量以达到抵抗病虫害,提高农作物的产量的效果。用流变学研究了血液高分子衍生物与其他高分子材料形成的成膜剂的物理性能,确认高分子互穿网络稳定结构的形成。同时还用一些标准化合物进行药物释放试验,结果表明,血液中生物高分子和其他高分子结合,可以制备出稳定的高分子三维网络结构,用于控制药物释放。这对综合利用生物资源,减少环境污染,开发高效农业有着重要意义。

Study of Novel Blood Derived Polymer as Seed Coating Agent,Viscoelasticity and Control Release Analysis

A series of novel blood derived polymers were prepared by forming an interpenetrating crosslinked network among blood biopolymer, crosslinker and another polymer like alginate. It can be used as seed coating agents. As coating agent, the viscosity is an important part of the properties. In this study, the viscoelasticity of the formed network was analyzed by a rheometer. Results indicate that the visocelasticity of the formed polymer is enhanced by the increase in the degree of crosslinking. The complex viscosity together with storage modulus and loss modulus increase with the increase of the degree of crosslinking, which indicates the formation of a strong polymer network. The release profile for active chemicals from the formed polymer matrix was investigated, in which phenol was selected as a substrate. Results show that the release of phenol from the matrix can be controlled by the crosslinked network. This can be extended to control release of other chemicals such as pesticides and bactericides for agricultural applications.