PHOTODEGRADATION OF POLYIMIDES .3. THE EFFECT OF CHEMICAL-COMPOSITION, RADIATION SOURCE, ATMOSPHERE, AND PROCESSING

被引：20

作者：

HOYLE, CE

ANZURES, ET

机构：

[1] Department of Polymer Science, University of Southern Mississippi, Hattiesburg, Mississippi

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 1992年 / 30卷 / 07期

关键词：

POLYIMIDES; PHOTOLYSIS; FLUORINATED POLYMERS; ABLATION;

D O I：

10.1002/pola.1992.080300702

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Polyimide films made from diarylanhydrides with oxygen, carbonyl, and hexafluoroisopropylidene 6F bridging groups are photolabile when irradiated with unfiltered light from a medium-pressure mercury lamp. The presence of oxygen is necessary to the photolytic degradation process, which results in the ultimate oxidative ablation of thin polyimide films. Films based on the 6F dianhydride containing a hexafluoroisopropylidene hinge group are the most unstable. However, photolysis of 6F dianhydride based polyimides in an inert atmosphere with either the unfiltered medium pressure mercury lamp or an electron beam results in no detectable changes even after long exposure times.

引用

页码：1233 / 1245

页数：13

共 12 条

[1]

ANZURES ET, 1990, POLYM PREPR, V31, P343

[2]

DINEHART RA, 1972, MAKROMOLEKUL CHEM, V153, P237

[3]

DINEHART RA, 1971, MAKROMOLEKUL CHEM, V143, P189

[4] PHOTODEGRADATION OF POLYIMIDES .1. A SPECTRAL, VISCOMETRIC, CHROMATOGRAPHIC, AND WEIGHT-LOSS INVESTIGATION OF POLYIMIDES BASED ON A HEXAFLUORINATED DIANHYDRIDE [J].