PALS and DSC measurements in 8 MeV electron irradiated natural rubber filled with different fillers

被引：0
作者：
Mandal, Arunava [1 ]
Pan, Sandip [1 ]
Roychowdhury, Anirban [2 ]
Sengupta, Asmita [1 ]
机构：
[1] Visva Bharati Cent Univ, Dept Phys, Santini Ketan 731235, W Bengal, India
[2] Kolkata Ctr, UGC DAE Consortium Sci Res, Kolkata 98, W Bengal, India
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2015年 / 29卷 / 28期
关键词：
Positron annihilation measurements; differential scanning calorimetry; natural rubber; electron irradiation; fillers; MECHANICAL-PROPERTIES; POLYMER; BLENDS; COMPATIBILITY; DEGRADATION; MISCIBILITY; BEHAVIOR; SYSTEMS; MODEL;
D O I：
10.1142/S0217979215501969
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The effect of high energy electron irradiation on the microstructure and thermal properties of natural rubber (NR) filled with different fillers at different concentrations are studied. The samples are irradiated with 8 MeV electron beam to a total dose of 100 KGy. The change in free volume size and specific heat due to addition of fillers and irradiation are studied using positron annihilation lifetime spectroscopy (PALS) and differential scanning calorimetry (DSC) respectively. The Positron lifetime spectra are de-convoluted into two components. The longer lived component (tau o-Ps) signifies the pick-off annihilation of ortho-positronium (o-Ps) at free volume site which may be related to the radius of the free volume holes. It is observed that the specific heat (C-p) and free volume size are all affected by both irradiation and addition of fillers.
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页数：12
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