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为什么要研究玉米淀粉颗粒的大小?

为什么要研究玉米淀粉颗粒的大小?

来源网址:https://www.swjjkl.com/ 2021-10-08 13:39:34    

颗粒大小几乎与粉体的所有性能密切相关,不用说玉米淀粉颗粒的纳米效应,还是微孔的催化效应,就是微米尺度的粉体,其大小也是很重要的。

The particle size is closely related to almost all the properties of the powder, not to mention the nano effect of corn starch particles or the catalytic effect of micropores, that is, the size of micron scale powder is also very important.
如水泥的水化反应、涂料的附着力、电池材料的充放电、药物被人体吸收的程度、过滤器的过滤效率、磁性材料的磁导率和矫顽力、杀虫剂效力、大气和环境污染等,无不与颗粒大小有关。
For example, the hydration reaction of cement, the adhesion of coatings, the charge and discharge of battery materials, the degree of drug absorption by human body, the filtration efficiency of filters, the permeability and coercivity of magnetic materials, the effectiveness of pesticides, atmospheric and environmental pollution are all related to the particle size.
在颗粒体系中颗粒与介质的界面大小决定了颗粒的活性,描述颗粒活性可用单位质量的颗粒表面积表征,称为比表面积,颗粒越小比表面积越大,颗粒的活性越强。
In the particle system, the size of the interface between the particle and the medium determines the activity of the particle. The activity of the particle can be characterized by the surface area of the particle per unit mass, which is called the specific surface area. The smaller the particle, the larger the specific surface area, the stronger the activity of the particle.
玉米淀粉颗大小如何分类?
How to classify the size of corn starch?
通常所说的超微颗粒或目前流行的所谓纳米颗粒,是指1-100nm尺度的颗粒。
Generally speaking, the ultra-fine particles or the popular so-called nanoparticles refer to particles with a scale of 1-100 nm.
严格地讲,纳米颗粒应是2~10nm的颗粒,有明显的量子效应,2nm以下称为原子团;
Strictly speaking, nanoparticles should be 2 ~ 10nm particles with obvious quantum effect. Below 2nm is called atomic cluster;
微米颗粒指1-1000微米的颗粒;亚微米颗粒指0.1-1微米的颗粒。超细颗粒是纳米颗粒与亚微米颗粒的总称;
Micron particles refer to particles of 1-1000 microns; Submicron particles refer to 0.1-1 micron particles. Ultrafine particle is the general name of nano particle and submicron particle;
“细粉”指1-100微米的固体颗粒;“粗粉”指100-1000微米的固体颗粒;超过1000微米的特大颗粒则进入块状物体的范畴了。
"Fine powder" means solid particles of 1-100 microns; "Coarse powder" means solid particles of 100-1000 microns; Oversized particles over 1000 microns enter the category of massive objects.
不同的行业还有很多不同的说法,统一这些说法有利于粉体技术交流。
There are many different opinions in different industries. Unifying these opinions is conducive to powder technology exchange.