The effects of swift heavy ion irradiation on the radiochemistry and melting characteristics of PET

被引：53

作者：

Biswas, A ^{[1
]}

Lotha, S

Fink, D

Singh, JP

Avasthi, DK

Yadav, BK

Bose, SK

Khating, DT

Avasthi, AM

机构：

[1] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India

[2] NE Hill Univ, Dept Phys, Shillong 793003, Meghalaya, India

[3] Hahn Meitner Inst Kernforsch Berlin GmbH, Abt FD, D-14109 Berlin, Germany

[4] Ctr Nucl Sci, New Delhi 110067, India

[5] Inter Univ Consortium DAEF, Indore 452001, India

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1999年 / 159卷 / 1-2期

关键词：

swift heavy ion; differential scanning calorimetry; ion tract; melting enthalpy; X-ray diffraction; crystallites; FTIR;

D O I：

10.1016/S0168-583X(99)00486-3

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

High electronic excitation (similar to 10 keV/nm) induced effects on the radiochemistry and melting behaviour of semicrystalline polyethylene terephthalate (PET) have been studied by FTIR and differential scanning calorimetry (DSC) techniques, After irradiation with a 180 MeV Ag14+ ion beam, DSC measurements of PET films exhibited significant change in their melting behaviour. The gradual increase in the melting enthalpy of irradiated PET with the ion fluence is observed for the first time, which reaches a maximum when track overlapping sets in, and decreases exponentially thereafter. FTIR measurements of irradiated PET at different ion fluences have also shown partly different trend of amorphisation than the earlier observations. X-ray diffraction results of irradiated PET reveal both a shift and a reduction of the main peak, along with the appearance of a new small peak. Possible reasons for these findings are discussed. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：40 / 51

页数：12

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