CALORIMETRIC STUDY OF THE ROOM-TEMPERATURE TRANSITIONS OF POLYTETRAFLUOROETHYLENE - THE INFLUENCE OF THERMAL HISTORY

被引：18

作者：

VILLANI, V ^{[1
]}

PUCCIARIELLO, R ^{[1
]}

AJROLDI, G ^{[1
]}

机构：

[1] MONTEFLUOS SPA,I-20021 BOLLATE,ITALY

来源：

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 1991年 / 29卷 / 10期

关键词：

D O I：

10.1002/polb.1991.090291009

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The trend of the room-temperature transitions of native polytetrafluorethylene versus annealing temperature has been studied. A method of deconvolution for the calorimetric curves C(p)(T), based on Pearson VII type functions and the Marquardt's nonlinear least-squares method, allowed the evaluation of the temperatures and of the heat of each transition. Annealing at 330-degrees-C determines the loss of the crystalline fraction responsible of the lowest room-temperature transition. An interpretation of the lowest room-temperature transition is suggested.

引用

页码：1255 / 1259

页数：5

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