In routine use, polyester can be modified for a number of reasons and by several different strategies. The principles involved and the techniques based on those principles have, in many cases, given rise to parallel modifications in the medical uses of polyester. An extensive survey of such modifications is provided: if they have not yet been used to modify medical polyester, they may suggest future opportunities. Progress up to around 1980 in routine use modifications for repellency, flame retardance, soil release, and static control was covered in an extensive review .
Whatever the reasons for modification, the strategies can be grouped under the following headings.
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