核@壳型聚酰胺-胺（PAMAM）衍生物的设计合成及其对聚羟基丁酸/戊酸共聚酯（PHBV）的性能调控

项目名称： 核@壳型聚酰胺-胺（PAMAM）衍生物的设计合成及其对聚羟基丁酸/戊酸共聚酯（PHBV）的性能调控

项目编号： No.51503007

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 一般工业技术

项目作者： 靳玉娟

作者单位： 北京工商大学

项目金额： 20万元

中文摘要： 针对生物基材料聚羟基丁酸/戊酸共聚酯（PHBV）结晶度高、难加工、脆而硬的问题，本申请以聚酰胺-胺(PAMAM)树枝状高分子为中心核，采用化学接枝法，设计合成具有核@壳结构的PAMAM@超支化聚酯(mHBPE)和PAMAM@聚乙二醇(nPEG)，并分别以这两种PAMAM树枝状高分子衍生物为大分子改性剂制备PHBV体系。通过调控PHBV体系中PAMAM代数、接枝物种类、接枝物分子量、接枝数以及PAMAM衍生物含量等参数对含PAMAM衍生物大分子改性剂的PHBV体系的流变性能、热性能、结晶性能、力学性能及降解性能（14C同位素跟踪法）的变化规律进行研究，构建材料结构与性能之间的关系，并对PHBV-PAMAM衍生物的相间作用形式及机理进行研究，为制备可成型加工、综合性能优良，同时又保持生物降解性的新型生物基材料打下科学基础。本申请用于制备高性能环境友好材料，既具有一定学术价值又有广泛应用前景。

中文关键词： 生物基高分子；树枝状高分子；生物降解；结晶；流变

英文摘要： In this proposed research, Poly[(3-hydroxybutyrate)-co-(3-hydroxyvalerate)] (PHBV) which is brittle and hard with high crystallization, bad processibility was focused. First, Core@shell Poly(amidoamine)(PAMAM)@mHBPE and PAMAM@nPEG were designed and prepared through chemical grafting method taking PAMAM dendrimers as central core. Then, PHBV systems containing the above two core@shell PAMAM derivatives as macromolecular additives were prepared respectively. The effect of the generations of PAMAM dendrimers, types of the grafts, molecular weight of the grafts, quantity of the grafts and the content of core@shell PAMAM derivatives were studied in PHBV system. Also, the rheological properties, thermo performances, crystallization properties, mechanical properties and degradation performances (tested by 14C isotope tracing technology) of PHBV systems were studied in order to construct relationships between structures and properties. Also, the interaction forms and mechanism between core@shell PAMAM derivatives and PHBV were studied to prepare new type bio-mass materials with easy processing, excellent comprehensive performances and certain biodegradability. The object of this work is to have a green and convenient way to advance the study of environmental-friendly bio-mass resources which will have academic values and widespread prospects for application.

英文关键词： bio-mass polymer;dendrimers;biodegradabilty;crystalization;rheology