Accession Number : ADA134482

Title :   Ion Implantation in Polymers.

Descriptive Note : Interin technical rept.,

Corporate Author : NAVAL ACADEMY ANNAPOLIS MD DEPT OF PHYSICS

Personal Author(s) : Wintersgill,Mary C ; Fontanella,John

PDF Url : ADA134482

Report Date : Aug 1983

Pagination or Media Count : 23

Abstract : An introductory overview will be given of the effects of ion implantation on polymers, and certain areas will be examined in more detail. Radiation effects in general and ion implantation in particular, in the field of polymers, present a number of contrasts with those in ionic crystals. The most obvious difference being that the chemical effects of both the implanted species and the energy transfer to the host may profoundly change the nature of the target material. Common effects include crosslinking and scission of polymer chains, gas evolution, double bond formation and the formation of additional free radicals. Research has spanned the chemical process involved, including polymerization reactions achievable only with the use of radiation, to applied research dealing both with the effects of radiation on polymers already in commercial use and the tailoring of new materials to specific applications. Polymers are commonly divided into two groups, in describing their behavior under irradiation. Group I includes materials which form crosslinks between molecules, whereas Group II materials tend to degrade. In basic research, interest has centered on Group I materials and of these polyethylene has been studied most intensively.

Descriptors :   *Polymers, *Ion implantation, Ionic crystals, Radiation effects, Polyethylene, Acetylenes, Electrolytes, Energy transfer, Polymerization, Electrical conductivity, Photoresistors

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE