Functionalized linear ethylene/acrylic acid copolymer

Linear polystyrene can be functionalized by various methods . The functional group capacity in these polymers diould not be too high otherwise, steric complications may arise. Poly(ethylene ycol) has been found to be most suitable for liquid-phase synthesis. This linear polyether and the block copolymers with functional groups at defined distances are chemically stable and soluble in a large number of solvents including water and can be precipitated selectively. Partially hydrolyzed poly(vinylpyrrolidone) and its copolymers with vinyl acetate were successfully applied in peptide synthesis. Poly(acrylic acid), poly(vinyl alcdiol), and poly-(ethylenimine) are less suitable for the sequential type synthesis because of the... 

Polyethylene (PE) is a family of addition polymers based on ethylene. Polyethylene can be linear or branched, homopolymer, or copolymer. In the case of a copolymer, the other comonomer can be an alkene such as propene, butene, hexene, or octene or a compound having a polar functional group such as vinyl acetate (VA), acrylic acid (AA), ethyl acrylate (EA), or methyl acrylate (MA). If the molar percent of the comonomer is less than 10%, the polymer can be classified as either a copolymer or homopolymer. Figure 4.1 presents a diagram of the family of polymers based on ethylene monomer. 

The behavior of polymers is also affected by their chemical identities. For instance, if the polymer is actually a copolymer, or if it is cross-linked or hydrophobically modified, variations from typical solution behavior occur. These examples are addressed in this chapter when they become relevant. Simple linear polymers include poly[(meth)acrylic acid], poly(acrylamide), poly(ethylene oxide), polymers and random copolymers of poly(ethylene oxide) and (propylene oxide), poly(vinyl alcohol), and poly(vinylpyrroli-done). Such polymers primarily influence solution viscosity through random chain entanglement. However, all of these polymers possess functional sites, which allows them to bind interpolymerically and aids in chain entanglement. These functional sites also allow all of these polymers to dissolve in highly polar aqueous mediums under the right conditions. We will focus on these polymers initially. 

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