【作者】 由虎；

【导师】 唐黎明；

【作者基本信息】 清华大学 ， 材料科学与工程， 2005， 硕士

【摘要】 超支化聚合物的高度支化结构和大量的端基,使其在自组装和涂料等方面显示出重要的研究价值。本论文合成了三种不同的超支化聚(酯-胺),并研究其结构性能,论文的主要工作如下:1. 以 1-(2-氨基乙基)哌嗪(AEP)和邻苯二甲酸二乙醇二丙烯酸酯(PDDA)为原料,利用 Michael 加成,通过一步法制得端胺基的超支化聚(酯-胺)SAL。利用封端剂十二胺使反应终止,研究了不同反应时间对产物支化度及聚合度的影响。利用 SAL 所带胺基与γ-缩水甘油醚基丙基三甲基硅烷(KH560)进行固化得到了一种涂层材料,研究了超支化聚合物结构对涂层力学性能的影响。2. 以哌嗪和三羟甲基丙烷三丙烯酸酯(TMPTA)为原料,通过一步法制得端丙烯酸酯基的超支化聚(酯-胺)ASB。研究了 ASB 的自组装溶液条件,自组装过程及膜的表面形貌特征。利用 ASB 所带端双键对自组装膜的表面进行化学改性。3. 以哌嗪和三羟甲基丙烷三丙烯酸酯(TMPTA)为原料,在哌嗪过量的情况下,利用 Michael 加成,制得端仲胺基的超支化聚(酯-胺)HPEA。通过与双酚 A 型环氧树脂预聚物(E51)混合涂膜,制得了无溶剂的室温固化涂层,并研究了 HPEA 结构对其力学性能和热性能的影响。更多还原

【Abstract】 Hyperbranched polymers are a special kind of polymers with many terminalgroups and highly branched structures. These macromolecules display importantapplications in various areas, including adsorption self-assembly and coatings. In thisdissertation, the synthesis, structure and properties of three kinds of hyperbranchedpoly (ester-amine)s were studied. The main research works are as follows:1. Aliphatic hyperbranched poly(ester-amines)s (defined as SAL) with amineend-groups were synthesized by Michael addition reaction between phthalicdiglycoldiacrylate (PDDA) and 1-(2-Amino-ethyl)piperazine (AEP) via one-step procedure.The effect of reaction time on degree of polymerization and degree of branching (DB)was studied by using laurylamine as the reaction stopper. The polymers were furthercured wtih β -glycidyl oxyl propyl trimethoxysilane (KH560) under ambientcandition to form coatings with good performances. The effect of polymer structureon the mechanical properties of the cured coatings was also studied2. Hyperbranched poly(ester-amine)s (defined as ASB) with terminal acrylategroups were prepared from trimethylolpropanetriacrylate (TMPTA) and piperazinevia one-step procedure. With ASB as polycation, multilayer films were fabricatedfrom ASB and poly(sodium-p-styrenesulfonate) (PSS) by layer-by-layer dipping. ThepH of ASB sulation on assembling process, morphology of the film was studied. Thefilm with ASB as the outmost layer was further modified by reactive reagents bearingamine group.3. Hyperbranched poly(ester-amine)s (defined as HPEA) with terminalsecondary amine groups were synthesized from TMPTA and excessive piperazine.The polymers were further cured wtih bisphenol A epoxy resin under ambientcondition. The influence of polymer structure on the mechanical properties andthermal properties of the cured coatings was studied.更多还原