Polymers, chain type density

The distribution of chlorine atoms along the polymer chain has been studied in great detail. The distribution in various functional types is shown in Table 4 (18). High density polyethylene chlorosulfonated to 35% G1 and 1% S has been found to contain only 1.7% highly active chlorines, ie, reactive to weak bases. AH of these are attributed to the chlorine in the sulfonyl chloride group and those in beta position to SO2GI. No vicinal chlorides groups were found (19). 

When a porous chromatographic support consists of a basic material on which vinyl polymer chains may be grafted in sufficient lateral density, ion exchangers of the following types may be formed from the monomers listed ... 

Inner Polymer (Listed Alphabetically) Outer Polymer Chain Conformation Inner/Outer Backbone Structure Inner/Outer Charge Type Inner/Outer Charge Density Inner/Outer Molecular Weight Inner/Outer... 

G. Polyolefins. The thermoplastic hydrocarbons polyethylene and polypropylene are flexible, inexpensive materials with good chemical resistance. Two types of polyethylene are available low density and high density. The former contains branched polymer chains which impart flexibility. The maximum usa-... 

Flory-type free energy calculations show that the root mean square end-to-end distance of a polyelectrolyte increases linearly with the chain length at infinite dilution and without added salt [40]. Using the above perturbation theory, scaling relations at finite densities are obtained. The influence of the interaction with other polymer chains, counterions, and added salt is captured in the Debye screening length xT1. 

---