Polymeric thermal analysis of C + H and C + H + Ar ion implanted UHMWPE samples
Küçük Resim Yok
Tarih
2007
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Chemical surface characterization of C + H hybrid ion implanted UHMWPE samples were carried out using DSC (differential scanning calorimeter) and TGA (thermal gravimetric analysis) techniques. Samples were implanted with a fluence of 1017 ion/cm2 and an extraction voltage of 30 kV. The study of TGA and DSC curves showed that: (1) Polymeric decomposition temperature increased, (2) Tm, ?Cp and ?Hm values changed while ?Cp and ?Hm increased. Tg value could not be measured, because of some experimental limitations. However, the increase in ?Hm values showed that Tg values increased, (3) the branch density which indicated the increase in number of cross-link (Mc) decreased in ion implanted samples and (4) increase in ?Hm values indicated increase in crystallinity of implanted surface of UHMWPE samples.
Açıklama
Anahtar Kelimeler
Branch, Cross-link, Glassy transition temperature (Tg), Heat capacity (?Cp), Melting enthalpy (?Hm), Melting temperature (Tm)
Kaynak
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
WoS Q Değeri
Scopus Q Değeri
Q2
Cilt
261
Sayı
1-2 SPEC. ISS.
