The polymer chain environment in which polymer degradation reactions occur often confers to these reactions interesting new features which would not be predicted by direct comparison with the behavior of model compounds. In particular, reactions can involve rather novel types of chain mechanisms which ...
Thermoplastics are very long polymer chains with a high molecular weight and can be either crystalline or amorphous. The high molecular weights of polymers impart their useful properties such as good mechanical properties and have the ability to be molded into various types of parts (injection molded...
Cell therapy has emerged as a viable approach for treating damaged organs or tissues, particularly with advancements in stem cell research and regenerative medicine. The innovative technique of cell sheet engineering offers the potential to create a cell
24.3.3.2.2 Polymer Solar Cells Many different types of polymer solar cells can be fabricated depending on the cell structure. Although every structure has different advantages and disadvantages, most preferable types could be bulk heterojunction solar cells and inverted type solar cells. Except for th...
In several bacteria, the poly-A tail has been useful in promoting the degradation of mRNA, meaning that, poly-A forms the larger process of gene expression. The role of poly-A in polyadenylation begins as the transcription of the genes terminates. ...
Prolonged exposure to harsh chemicals can cause degradation and compromise its structural integrity, potentially compromising safety in chemical-intensive work environments. Most of the transparent PPE that Paulson manufactures is made of a polycarbonate base material. This includes arc flash, heat ...
Examples include polymer/ceramic and metal/ceramic composites. Composites are used because overall properties of the composites are superior to those of the individual components. 复合材料由两种或更多材料构成。例子有聚合物/陶瓷和金属/陶瓷复合材料。之所以使用复合材料是因为其全面性能优于组成部分单独的性能...
Depending on the combination of donor and acceptor materials, OSCs can be categorized into several types: polymer–fullerene, polymer–small molecule, all-polymer and all-small molecule, as well as multicomponent OSCs in which the photoactive layer comprises three or more photoactive components. This...
Chapter 3: What is the process for the production of polyethylene foams?The following stages are involved in the closed cell foaming process, observed at the molecular level:Gas Dissolution. Gas is dispersed in the molten polymer until saturated, forming a single-phase polymer-gas solution. It ...
Both DNA and RNA are nucleic acids, composed of polynucleotide chains. This means that they are long polymer chains made up of repeating units called nucleotides. Each individual nucleotide is composed of a pentose sugar, a phosphate group, and a nitrogenous base, as depicted in Figure 1. ...