is the father of modern polymer development. His research in the 1920s led the way to modern manipulations of both natural and synthetic polymers. He coined two terms that are key to understanding polymers: polymerization and macromolecules, according...
a The fact that the majority of macromolecules are containing one chlorine atom allows to think that transfer is not very important.The most important point is that termination results from two diffierent processes,the first one in minor proportion is linked with the presence of polymer and is ...
a高分子纳米粒包括高分子纳米球和高 分子纳米囊,前者属于基质骨架型,药物吸附或偶联 纳米球的表面或溶解、分散、包封在实 心球中;后者则是属于药库膜壳型,由高分 子材料外壳和液状内核构成,药物主要溶解在构成液体内核的 油相或水相中。 The high polymer accepts the grain of rice accepts the poppy including...
Poly(meta-phenylene isophthalamide) comprising encapsulated filler, a process for the preparation of these compositions by addition of the filler to the polymer solution before precipitation, and molded articles prepared from these materials characterized by increased strength at equal filler loadings.收藏...
1. Polymer: macromolecules built up by the linking together of large numbers of much smaller molecules. 2. Ductility: The property that allows a metal to deform permanently when loaded in tension. 3. Free radical: it is simply a molecule with an unpaired electron. 4. Physical properties: The...
The major biomolecules that we know of (proteins, DNA, lipids) are actually polymers of smaller monomeric units. For example, proteins are the polymers of amino acids, which are the monomers. Answer and Explanation:1 A polysaccharide is the term used to describe a carbohydrate polymer. For exa...
DNA transfection is an important technology in life sciences, wherein nuclear entry of DNA is necessary to express exogenous DNA. Non-viral vectors and their transfection reagents are useful as safe transfection tools. However, they have no effect on the
What is a carbohydrate monomer? Macromolecules: There are four major macromolecule groups found in living things. These include carbohydrates, lipids, proteins, and nucleic acids. In general, macromolecule groups can be simple or complex, such as deoxyribonucleic acid (DNA), which is made of nucleo...
Is PEEK a Polymer? PEEK(Polyetheretherketone) is a colourlessorganic thermoplastic polymer, even though when printed it looks beige-brown (in its Carbon reinforced version, it looks black).Polymersare substances or materials consisting of macromolecules composed of many repeating subunits, called monome...
While polyurethane polymers are used for a vast array of applications, their production method can be broken into three distinct phases. First, the bulk polymer product is made. Next, the polymer is exposed to various processing steps. Finally, the polymer is transformed into its final product ...