irreversible colloid

简明释义

不可逆胶体

英英释义

例句

1.In food science, gelatin can be classified as an irreversible colloid when it sets after cooling.

在食品科学中，明胶在冷却后凝固时可以被归类为不可逆胶体。

2.The study of irreversible colloids is important in understanding how certain materials behave under stress.

对不可逆胶体的研究对于理解某些材料在压力下的行为非常重要。

3.Certain paints contain irreversible colloids that harden upon drying, making them permanent.

某些油漆含有在干燥后硬化的不可逆胶体，使其变得永久。

4.When a protein solution is heated, it can form an irreversible colloid that cannot be re-dissolved.

当蛋白质溶液加热时，它会形成一种不可逆胶体，无法重新溶解。

5.The gel formed during the heating process is an irreversible colloid, meaning it cannot return to its original liquid state.

在加热过程中形成的凝胶是一种不可逆胶体，这意味着它无法恢复到原来的液态状态。

作文

Colloids are fascinating substances that occupy a unique position in the realm of chemistry. They are mixtures where tiny particles are dispersed throughout a continuous medium, and they can exhibit both solid and liquid characteristics. One particularly interesting type of colloid is the irreversible colloid (不可逆胶体). This term refers to a colloidal system that, once formed, cannot be reverted to its original components through physical means. Understanding the nature and behavior of irreversible colloids is essential for various scientific and industrial applications.In many cases, colloids can exist in two states: reversible and irreversible. A reversible colloid can be transformed back into its original state when certain conditions change, such as temperature or pressure. However, an irreversible colloid is different. Once the particles have aggregated and settled into a stable structure, they cannot be separated into their original components without undergoing a chemical reaction or a significant change in the environment. This property makes irreversible colloids particularly useful in fields like materials science and pharmaceuticals.One common example of an irreversible colloid is gelatin, which is often used in cooking and baking. When gelatin is dissolved in hot water, it forms a colloidal solution. As it cools, it sets into a gel-like structure that cannot easily return to its liquid form without heating it again. This transformation is a classic demonstration of how irreversible colloids behave. The change from liquid to solid is permanent under normal conditions, illustrating the concept of irreversibility in colloidal systems.The stability of irreversible colloids is influenced by several factors, including particle size, concentration, and the nature of the dispersing medium. For instance, smaller particles tend to remain suspended longer than larger ones, which may settle due to gravity. Additionally, the interactions between the particles and the surrounding medium can affect the overall stability of the colloid. In some cases, adding certain stabilizers can help maintain the colloidal system, but once an irreversible colloid has formed, breaking it down is a challenging task.In industrial applications, irreversible colloids are crucial in processes like paint formulation, where pigments are dispersed in a medium to create a stable product. The permanence of these colloids ensures that the paint maintains its color and consistency over time. Similarly, in the pharmaceutical industry, many drug formulations rely on irreversible colloids to ensure that the active ingredients remain uniformly distributed, providing consistent dosing and effectiveness.In conclusion, the study of irreversible colloids (不可逆胶体) offers valuable insights into the behavior of complex mixtures in both natural and artificial environments. Their unique properties make them indispensable in various fields, from food science to pharmaceuticals and beyond. By understanding the mechanisms behind irreversible colloids, scientists and engineers can harness their potential to develop innovative products and solutions that enhance our daily lives.

胶体是一种迷人的物质，在化学领域占据着独特的位置。它们是微小颗粒分散在连续介质中的混合物，既可以表现出固体特性，也可以表现出液体特性。其中一个特别有趣的胶体类型是不可逆胶体。这个术语指的是一种胶体系统，一旦形成，就无法通过物理手段恢复到其原始成分。理解不可逆胶体的性质和行为对各种科学和工业应用至关重要。在许多情况下，胶体可以存在于两种状态：可逆和不可逆。可逆胶体可以在某些条件变化时，例如温度或压力，转变回其原始状态。然而，不可逆胶体则不同。一旦颗粒聚集并沉淀成稳定结构，就无法在没有化学反应或环境发生显著变化的情况下将其分离回原始成分。这一特性使得不可逆胶体在材料科学和制药等领域特别有用。一个常见的不可逆胶体例子是明胶，它常用于烹饪和烘焙。当明胶溶解在热水中时，会形成胶体溶液。随着温度降低，它会凝固成一种类似于凝胶的结构，在正常条件下无法轻易返回液态。这种从液态到固态的转变是不可逆胶体行为的经典示范。这个变化在正常条件下是永久性的，说明了胶体系统中不可逆性的概念。不可逆胶体的稳定性受到多个因素的影响，包括颗粒大小、浓度和分散介质的性质。例如，较小的颗粒往往比较大的颗粒悬浮的时间更长，因为较大的颗粒可能因重力而沉降。此外，颗粒与周围介质之间的相互作用也会影响胶体的整体稳定性。在某些情况下，添加特定的稳定剂可以帮助维持胶体系统，但一旦形成不可逆胶体，分解它是一项具有挑战性的任务。在工业应用中，不可逆胶体在油漆配方等过程中至关重要，其中颜料分散在介质中以创建稳定的产品。这些胶体的持久性确保油漆在时间上保持其颜色和一致性。同样，在制药行业，许多药物配方依赖于不可逆胶体来确保活性成分均匀分布，从而提供一致的剂量和有效性。总之，对不可逆胶体的研究为我们提供了关于复杂混合物在自然和人工环境中行为的宝贵见解。它们独特的特性使它们在食品科学、制药等各个领域不可或缺。通过理解不可逆胶体背后的机制，科学家和工程师可以利用它们的潜力，开发出创新的产品和解决方案，从而改善我们的日常生活。