addition polymerization

简明释义

加成聚合

英英释义

例句

1.The process of making polyethylene involves addition polymerization (加聚反应) of ethylene monomers.

制造聚乙烯的过程涉及乙烯单体的加聚反应。

2.Understanding addition polymerization (加聚反应) is crucial for students studying organic chemistry.

理解加聚反应对学习有机化学的学生至关重要。

3.The addition polymerization (加聚反应) of styrene results in polystyrene, a widely used plastic.

苯乙烯的加聚反应产生聚苯乙烯，这是一种广泛使用的塑料。

4.The production of synthetic rubber is primarily achieved through addition polymerization (加聚反应).

合成橡胶的生产主要通过加聚反应实现。

5.In the laboratory, chemists often demonstrate addition polymerization (加聚反应) using simple alkenes.

在实验室中，化学家们经常使用简单的烯烃来演示加聚反应。

作文

Addition polymerization is a fundamental process in the field of chemistry that plays a significant role in the production of various types of plastics and synthetic materials. This type of polymerization involves the joining of monomers, which are small molecules, to form long chains or networks, known as polymers. The unique aspect of addition polymerization (加聚反应) is that it occurs without the loss of any small byproducts, making it an efficient method for creating large molecular structures.To better understand addition polymerization (加聚反应), we can look at its mechanism. The process typically starts with an initiator, which can be a radical, cation, or anion, that reacts with a monomer to form an active center. This active center then reacts with another monomer, leading to the formation of a dimer. The process continues as more monomers add to the growing chain, resulting in a polymer. This chain growth can happen rapidly, and the final product can vary widely depending on the types of monomers used and the conditions under which the reaction occurs.One of the most common examples of addition polymerization (加聚反应) is the production of polyethylene, a widely used plastic. Polyethylene is made from the monomer ethylene, which undergoes addition polymerization (加聚反应) to produce long chains of polyethylene. This material is known for its durability and versatility, making it suitable for various applications, from packaging materials to containers and even toys.There are different types of addition polymerization (加聚反应), including free radical polymerization, ionic polymerization, and coordination polymerization. Each method has its own set of advantages and disadvantages. For instance, free radical polymerization is often favored for its simplicity and ability to initiate polymerization at room temperature. However, it may lead to a broad distribution of molecular weights, which can affect the properties of the final polymer.On the other hand, ionic polymerization allows for better control over the molecular weight and architecture of the resulting polymer, but it often requires specific conditions, such as low temperatures or the absence of moisture, to proceed effectively. Coordination polymerization, commonly used in the production of high-performance polymers, relies on transition metal catalysts to achieve precise control over the polymer structure.The significance of addition polymerization (加聚反应) extends beyond just the production of plastics. It also finds applications in the development of advanced materials, such as elastomers, fibers, and coatings. These materials have revolutionized industries by providing lightweight, strong, and flexible options for various products.In conclusion, addition polymerization (加聚反应) is a crucial chemical process that enables the transformation of simple monomers into complex polymers. Its efficiency and versatility make it an essential technique in the manufacturing of everyday materials. As research continues to evolve, the understanding and application of addition polymerization (加聚反应) will likely lead to the development of new materials and technologies that can address the challenges of modern society.