What is polymer, the difference between copolymer and homopolymer

Polymers, also known as polymer compounds, refer to those compounds with a relative molecular weight of more than 10,000 that are formed by a large number of atoms or clusters of atoms mainly bonded by covalent bonds.

Definition: A compound consisting of thousands of atoms covalently bonded to each other to form a compound with a particularly large relative molecular mass and repeating structural units. (It can be divided into inorganic polymer compounds and organic polymer compounds).

It is a compound formed by the aggregation of a class of molecules with high relative molecular mass, also known as polymers, macromolecules, etc. Generally, molecules with a relative molecular weight higher than 10,000 are called polymers. Polymers are usually made up of 103 105 atoms linked by covalent bonds.

Because polymers are mostly made by polymerization of small molecules, they are also often referred to as polymers or polymers, and small molecules used for polymerization are called "monomers".

Examples: cellulose, protein, silk, rubber, starch and other natural polymer compounds, as well as polymer-based synthetic materials, such as various plastics, synthetic rubber, synthetic fibers, coatings and adhesives.

Organic polymer compounds can be divided into natural organic polymer compounds (such as starch, cellulose, protein, natural rubber, etc.) and synthetic organic polymer compounds (such as polyethylene, polyvinyl chloride, etc.), their relative molecular mass can range from tens of thousands to millions or more, but their chemical composition and structure are relatively simple, often composed of countless (n) structural units arranged in a repeating manner.

Copolymers and homopolymers are the two basic types of polymer compounds, and their main difference is their structure.

Specifically, homopolymers are made up of the same monomer molecules, such as methyl acrylate, linked by covalent bonds, while copolymers are made up of two or more different monomer molecules, such as methyl acrylate and ethyl acrylate, linked by covalent bonds. As a result, copolymers have more complex structures and more chemical and physical properties.

Homopolymers are composed of the same monomeric molecule and have a high degree of crystallinity, a high degree of purity, and a relatively low melting point. Homopolymers are usually very high in molecular weight, which gives them good mechanical properties and chemical stability. Homopolymers typically have relatively high melting points and glass transfer temperatures, which makes them stable in high-temperature environments.

In addition, homopolymers are relatively inexpensive to prepare because they require only one monomeric molecule.

Copolymers are made up of two or more different monomeric molecules, which makes their chemical and physical properties more complex. Copolymers typically have lower molecular weights, so they may not have as mechanical properties and chemical stability as homopolymers. Copolymers typically have relatively low melting points and glass transfer temperatures, which makes them potentially less stable than homopolymers in high-temperature environments.

The role of copolymers and homopolymers in practical applications:

Both copolymers and homopolymers play an important role in practical applications.

Homopolymers are commonly used in the preparation of plastics, fibers, pipes, cables, and other products, while copolymers are widely used in coatings, adhesives, polymer electrolytes, polymer materials, and other fields.

In addition, there are many different types of copolymers and homopolymers that differ in their properties and applications. <>

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Pro-polymeric materials refer to polymer polymers, which are materials formed by polymerization reactions of small molecule compounds, collectively referred to as polymeric materials. According to the molecular structure of synthetic resins, plastic raw materials are mainly divided into thermoplastic and thermosetting plastics

For thermoplastics, it refers to plastics that are still malleable after repeated heating: there are mainly common raw materials such as PE PP, PVC, PS ABS, PMMA, POM, PC, PA, etc. Thermosetting plastics mainly refer to plastics made from heat-hardened synthetic resins, such as some phenolic plastics and amino plastics.

The English word "plastic" originally meant a material or plastic material that can be arbitrarily kneaded into various shapes. In Cihai, it is defined as "a material with synthetic or natural polymer compounds as the main component", which can be plasticized and molded under certain conditions, and the product can finally maintain the same shape. 1. The main ingredient of plastic raw materials is the polymer compound matrix known as resin.

2. Plastic raw materials: It is a material that is made of polymer synthetic resin (polymer) as the main ingredient infiltrated into various auxiliary materials or some additives with specific purposes, which has plasticity and fluidity under specific temperature and pressure, and can be molded into a certain shape and keep the shape unchanged under certain conditions. 3. Polymer:

Refers to the pure material or polymeric material produced by the polymerization process. Both natural resin and synthetic resin are polymer polymers, referred to as polymers. 4. Plastic has good insulation properties for electricity, heat and sound

Excellent electrical insulation, arc resistance, heat preservation, sound insulation, sound absorption, vibration absorption, and sound attenuation. Most of the plastic raw materials are extracted from some oils, and the most familiar part of the PC materials are extracted from petroleum. ABS is extracted from coal, and ABS will be soot-like and non-blistering when burned and extinguished; POM is extracted from natural gas, and when it is burned, it will have a very foul gas smell and white smoke. Hope mine can help you <>

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Polymer is the scientific name for plastics.

There are a variety of different plastic materials available on the market.

Plastic materials are based on polymers (i.e., molecules with a large number of atoms).

The typical molecule is water, while the typical polymer or polymer is polyethylene.

Most polymers are built on a carbon chain using hydrogen (polyethylene), chlorine (PVC), fluorine (ETFE, PVDF, TEFLON) or other molecules.

A polymer is a chemical compound in which its molecules are held together in a long repeating chain.

Polymer Profile:

The science of polymer synthesis is a good way to control the performance of bulk polymer samples. However, in biotechnology, nanotechnology, and all forms of coating applications, the surface interaction of polymer substrates is an essential area of research. In these cases, the surface properties of the polymer and the material, as well as the resultant force between them, largely determine their usefulness and reliability.

For example, in biomedical applications, the physical response to a foreign body and therefore its biocompatibility is controlled by surface interactions. In addition, surface science is an integral part of coating formulation, manufacturing, and application.

Introduction to Chemistry:

Chemistry is a basic natural science that studies the composition, structure, properties, transformation and application of matter at the atomic and molecular levels. It originates from life and production practices, and continues to evolve with the progress of human society.

Different from particle physics and nuclear physics, which study smaller scales, the material structure of atoms, molecules, and world-wide ions (clusters) in chemistry, as well as the interaction between chemical bonds and intermolecular forces, are located at the scale closest to the macrocosm in the microscopic world, so their natural laws are also most closely related to the physical and chemical properties of substances and materials in the macrocosm of human existence.

As an important bridge between the microscopic and macroscopic material worlds, chemistry is one of the main methods and means for human beings to understand and transform the material world.

Chemistry is a natural science that studies the composition, structure, properties and changes of matter at the atomic level, which is also the core basis of chemical change. Chemistry is a natural science based on experiments. The Chinese word "chemistry", if the single family returns to Xiang, is literally interpreted as "the science of change".

Chemistry, like physics, is the basic science of natural science. Mendeleev's periodic table of chemical elements greatly contributed to the development of chemistry. Nowadays, many people call chemistry the "central science" because chemistry is at the heart of some scientific disciplines, such as materials science, nanotechnology, biochemistry, etc.

There are five sub-disciplines under modern chemistry: inorganic chemistry, organic chemistry, physical chemistry, analytical chemistry and polymer chemistry.

Polymers are macromolecular compounds made up of many repeating units.

Polymers are polymer compounds formed by covalent bonding of many repeating units, also known as polymeric locust units. These repetitive units can be the same or different of them, joining them together through chemical reactions to form long chains or network structures. Common polymers include plastics, rubber, and fibers.

Polymers have unique physical and chemical properties, such as elasticity, heat resistance, plasticity, and corrosion resistance, so they are widely used in a variety of fields, including industrial, medical, construction, and various products in daily life.

1. Polymer materials refer to high-molecular-weight (usually up to 10 106) compounds formed by repeated links of many identical and simple structural units through covalent bonds. For example, the polyvinyl chloride molecule is made up of many vinyl chloride molecular building blocks "—CH2CHCL—that are repeatedly linked, so "—CH2CHCL"—is also called a structural unit or chain link. Compounds made up of small molecules capable of forming structural units are called monomers and are the raw materials for the synthesis of polymers.

2. The development of materials science has continuously put forward new requirements for talent training, requiring those engaged in the field of polymers to change from the narrow specialty to the broad specialty in the past. With the development of society, the polymer discipline not only needs to cultivate specialized talents who understand the knowledge and skills of plastics, rubber, fibers or coatings, but also needs high-level talents who are familiar with various fields of polymer materials and even the frontier of polymer materials science.