RADIATION EFFECTS OF AN ELECTRON-BEAM ON THE MICROHARDNESS OF POLY(METHYL METHACRYLATE) - POLY(CHLOROTRIFLUOROETHYLENE) POLYBLENDS

被引：8

作者：

BAJPAI, R ^{[1
]}

AGRAWAL, P ^{[1
]}

DATT, SC ^{[1
]}

机构：

[1] RANI DURGAVATI UNIV,DEPT POSTGRAD STUDIES & RES PHYS,JABALPUR 482001,INDIA

来源：

POLYMER INTERNATIONAL | 1994年 / 34卷 / 03期

关键词：

MICROHARDNESS; POLYBLENDS; CROSS-LINKING; DEGRADATION; HARDENING;

D O I：

10.1002/pi.1994.210340302

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Specimens of poly(methyl methacrylate) (PMMA): poly(chlorotrifluoroethylene) (PCTFE) polyblends with different weight percentage ratios were subjected to electron beam irradiation (1-10 Mrad). The effect of irradiation on the strength of the blend specimens was studied by measuring the surface microhardness using a Vicker's microhardness tester attached to a Carl Zeiss NU 2 Universal research microscope. Significant changes were observed in the Vicker's hardness number, H(V). An irradiation dose of 3 Mrad was found to enhance greatly the microhardness level of the specimens. An increase of approximately 78% in microhardness was observed as the radiation dose was increased from 1 to 3 Mrad. Electron irradiation was also found to induce crosslinking and degradation in the material. The degree of crosslinking was found to be maximum at a dose of 3 Mrad. Specimens incorporating 10 wt% PCTFE were found to exhibit the highest level of microhardness at all radiation doses.

引用

页码：249 / 251

页数：3

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