树状分子PAMAM接枝改性纳米SiO2与尼龙6的原位复合

将树状分子PAMAM接枝改性的纳米Si02与尼龙6进行原位复合，测试了复合材料的各项性能，对树状分子改性无机纳米粒子进行了初步的探索。结果表明：PAMAM接枝改性纳米SiO2可以提高尼龙6的强度、刚性和非等温结晶能力，但材料的韧性在接枝PAMAM代数较高的情况下趋于降低，同时，基体的摩尔质量显著下降。

Study of In-situ Polymerization of Nylon 6/PAMAM Dendrimer Grafted Nano-scale SiO2 Composite

Polyamidoamine (PAMAM) dendrimer grafted nano-scale SiO 2 was introduced to the in-situ polymerization of nylon 6, and the properties of the prepared composite were tested, and the polyamidoamine (PAMAM) dendrimer grafted nano-scale SiO 2 particles were studied.The experimental results showed that the strength, rigidity and non-isothermal crystallizing ability of the nylon matrix were improved, whereas the increase of PAMAM generation number went against the improvement in material toughness, owing mainly to the particular interphase structure and the existence of large amount of functional groups on the nano-scale SiO 2 surface.Meanwhile, the molecular mass of nylon 6 markedly decreased with the addition of PAMAM grafted nano-SiO 2.