To answer the question "What is the unit called from which polymers are made?", we can break down the explanation into clear steps:1. Understanding Polymers: - Polymers are large molecules made up of many smaller units. The
7 Plastics are polymers. They are formed from their monomers by polymerisation.(a) Two methods for the disposal of waste plastics are.burning recycling.Describe one advantage and one disadvantage of each method.buming recycling[4](b)(i) There are two types of polymerisation reaction. Give their...
Macromolecules are very large molecules; often thousands or even millions of atoms. Most macromolecules are polymers, which are long chains of repeating molecular subunits called monomers (mono- = one; poly- = many). Two monomers made a dimer, and three monomers make a trimer. Polymers can con...
As the excess amine increased, some of the amine not only remained as unreacted monomers or low-molecular-weight isolated chains within the cross-linking structure, but also formed dangling chain ends. As a result, the cross-linking density and mass density decreased, as did the glass ...
Natural polymers make up most of the cellular structures that compose living beings, but they are not just found in living organisms. Many plastics and other human-made materials that make modern living possible are synthetic polymers composed of monomers that are made and conjoined in laboratories...
aFollowing tasks shall be performed as minimum: 以下任务将执行作为极小值: [translate] apower f.rate crit 力量f.rate crit [translate] aThe amounts of the monomers with these polymers as feedstock are smaller than using PMMA. 数量单体与这些聚合物作为原料使用PMMA小于。 [translate] ...
new polymers, new monomers, which these polymers can be prepared, and photographic materials containing polymers are included.Novel polymers comprising recurring units capable of undergoing - elimination in an alkaline environment are disclosed for use in diffusion control layers in diffusion transfer film...
are extensively used up for synthesizing or developing new polymers, monomers or forms for variety of application in industry and biomedical areas3,4,5. Sustainable polymers, derived from renewable and waste materials and their mixtures, can be biodegraded, composted or recycled. They present lessene...
Resorbable, implantable bioelectronic devices are emerging as powerful tools to reliably monitor critical physiological parameters in real time over extended periods. While degradable magnesium-based electronics have pioneered this effort, relatively sho
We present a new 4D printing approach that can create high resolution (up to a few microns), multimaterial shape memory polymer (SMP) architectures. The approach is based on high resolution projection microstereolithography (PμSL) and uses a family of p