Theoretical Comparison Between Nylon and Silk

Nylon is a linear polymer that contains the amide bonds CONH (Tetsuya et al. 1998). Natural polymers, such as protein, also have amide groups in their molecular structure. However, nylon with the exception of nylon-1, is resistant against proteolytic enzymes, whereas protein is easily hydrolyzed by these enzymes (Tetsuya et al. 1998). Nylon has the same structure as silk but different behaviors in the degradation process. One is degradable, but the other one is non-degradable . Silk and Nylon...

Current Status of Greenhouse Gas Emissions

Industrial activities, especially related to the burning of fossil fuels, are major contributors of global greenhouse gas emissions. Climate change due to anthropogenic greenhouse gas (GHG) emissions is a growing concern for the global society. In the third assessment report, the Intergovernmental Panel on Climate Change (IPCC) provides the strongest evidence so far that the global warming of the last 50 years is due largely to human activity and the C02 emissions that arise when burning fossil...

Physical Properties of Beeswax and Paraffin

Paraffin wax is a tasteless and odorless, white, translucent solid. The source of paraffin wax is crude oil, which is derived from organic materials. Paraffin wax is produced by refining and de-waxing light lubricating oil stocks. It consists of a mixture of solid aliphatic hydrocarbons of high molecular weight, such as C36H74. Its molecular formula is C H. Paraffin wax can be defined as a fraction of petroleum dominated by n-alkanes that are solid at ambient temperature (Chouparova and Philp...