CALORIMETRIC MEASUREMENTS OF MEV ION-IRRADIATED POLYVINYLIDENE FLUORIDE

被引：45

作者：

CALCAGNO, L

MUSUMECI, P

PERCOLLA, R

FOTI, G

机构：

[1] Dipartimento di Fisica, Catania

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1994年 / 91卷 / 1-4期

关键词：

D O I：

10.1016/0168-583X(94)96269-3

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

High energy ion irradiation of semicrystalline polyvinylidene fluoride (PVDF) films changes its melting behaviour. After irradiation with 9 MeV carbon beam, differential scanning calorimetry of PVDF films exhibits a quite complex behavior in the temperature range 20-200-degrees-C. At low ion fluence irradiation ( < 10(12) ionS/CM2) the enthalpy of melting is constant (58.0 J/g), but a broad transition is observed before the melting temperature (160-degrees-C). At high fluences (10(12)-10(13) ions/cm2) the enthalpy of melting decreases exponentially and the PVDF evolves into a insoluble carbon network. The crystalline polymer component decreases from 50% to 2% as suggested by the thermal analysis and the X-ray diffraction measurements.

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页码：461 / 464

页数：4

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