微相分离(Microphase separation)(早期称为“中问相”(Mesophase)是嵌段共聚物的一个最主要的特征,其源于嵌段之间内聚能密度的差异而产生的相互推拒,但又由于...
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...是有两种或多种不同单体通过共价键相连而成,由于不同单体之间的相互排斥,嵌段共聚物会发生微观相分离(Microphase Separation),形成10-100nm左右的纳米结构。
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microphase separation model 微相分离模型
microphase separation structure 微相分离结构
The surface of HBPU appears the microphase separation behavior.
HBPU出现了明显的微相分离行为。
参考来源 - 超支化聚氨酯的合成与性能Copolymers with, microphase separation were obtained. The structure of PEO phase domains changed from homogeneously dispersed sphere with regular interface to steric continuous network when the EO content reached 52.16%.
PEG-g-PAn共聚物存在着微观相分离,并且当共聚物中的EO单元的摩尔含量增至52.16%时,PEO微区则从相畴界面规则、尺寸分布较均匀的球形结构变成连续的网络结构。
参考来源 - 梳型PEGXRD experiment shows that the microphase separation structures of the TPU nanocomposites are affected by annealing heat treatment.
结果表明,退火热处理过程改变了聚氨酯的微相分离结构;通过退火热处理方法降低了热塑性聚氨酯/碳纳米管纳米复合材料的导电逾渗值。
参考来源 - 聚氨酯/碳纳米管纳米复合材料的制备及结构与性能研究·2,447,543篇论文数据,部分数据来源于NoteExpress
Microphase separation of polyurethane is a relaxation process, affected by not only thermodynamics factors but also kinetics process.
聚氨酯的微相分离是一个松弛过程,不仅与热力学因素有关,而且也受动力学过程的影响。
The results indicate that CB has a positive effect on microphase separation, but a negative effect on the mechanical properties of PU;
结果表明:炭黑能加速聚氨酯泡沫的微相分离,明显地降低泡沫的力学性能;
The results indicated that the microphase separation degree of polyether-type waterborne polyurethanes was higher than that of polyester-type waterborne polyurethanes.
实验结果表明:聚醚型水性聚氨酯的微相分离程度高于聚酯型水性聚氨酯。
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