Ch3

(CH2CHN)n-CH2-CH2-N ' NS-100 structure 1

In this reaction, the H bonded to the N of the n repeating units of polyethylene amine [(-CH2CH2NH)n-] moves to the N of tolylene diisocyanate [-N=C=O] destroying the double bond between N and C. The C of the carboxyl group [=C=O] of tolylene diisocyanate then bonds with the N of the amine. The reaction above simply shows two of the tolylene molecules participating in the reaction, but in reality, there will be millions of them performing the reaction of H moving and the C of the carboxyl group of the tolylene bonding with the N of the amine and so on. The final structure is a mesh of cross-linked assembly, thus creating molecular pores.

As indicated in the NS-100 product, a closed loop structure is formed. The ethylene repeating units [-CH2CH2-] form the backbone of the membrane, and the benzene rings @ form the cross-linking mechanism that tie together the ethylene backbones forming the closed loop. The ethylene units and the benzene rings are

Healthy Chemistry For Optimal Health

Healthy Chemistry For Optimal Health

Thousands Have Used Chemicals To Improve Their Medical Condition. This Book Is one Of The Most Valuable Resources In The World When It Comes To Chemicals. Not All Chemicals Are Harmful For Your Body – Find Out Those That Helps To Maintain Your Health.

Get My Free Ebook


Post a comment