DYNAMIC MECHANICAL RESPONSE OF CRAZES IN POLYSTYRENE*

DING Jianfu; XUE Gi; CHENG Rongshi

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DYNAMIC MECHANICAL RESPONSE OF CRAZES IN POLYSTYRENE*

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- DYNAMIC MECHANICAL RESPONSE OF CRAZES IN POLYSTYRENE*
- DYNAMIC MECHANICAL RESPONSE OF CRAZES IN POLYSTYRENE*
- 高分子科学（英文版） 1994年12卷第3期页码：266-277
- Affiliations：
  
  1.   Department of Polymer Science
  2.   Nanjing University
  3.   Nanjing 210008
- Author bio：
- Funds：
- DOI：
  中图分类号： TQ325.2
- 纸质出版：1994-09-20
- Accepted：
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[1]丁建夫,薛奇,程镕时.DYNAMIC MECHANICAL RESPONSE OF CRAZES IN POLYSTYRENE[J].Chinese Journal of Polymer Science,1994,{4}(03):266-277.

DING Jianfu, XUE Gi, CHENG Rongshi. DYNAMIC MECHANICAL RESPONSE OF CRAZES IN POLYSTYRENE*[J]. 1994, 12(3): 266-277.
[1]丁建夫,薛奇,程镕时.DYNAMIC MECHANICAL RESPONSE OF CRAZES IN POLYSTYRENE[J].Chinese Journal of Polymer Science,1994,{4}(03):266-277. DOI：

DING Jianfu, XUE Gi, CHENG Rongshi. DYNAMIC MECHANICAL RESPONSE OF CRAZES IN POLYSTYRENE*[J]. 1994, 12(3): 266-277. DOI：

摘要

正

Dynamic mechanical analysis was used to study the mechanical properties and microstructureof crazes in polystyrene produced in air or in methanol at different temperatures. A new loss peakwas found at about 82℃

which is assigned to glass transition peak of craze fibrils. The decreaseof glass transition temperature of polymer in craze fibrils is due to the high values of surface tovolume ratio. The glass transition temperature ratio of craze fibrils to bulk material （T

/Tg） hasbeen expressed as a function of the fibrils diameter （d）. From T

of craze fibrils

the value of fibrildiameter can be calculated. Annealing the crazed specimen at room temperature makes the fibrilsplastically deform and cause the fibrils to thin slightly

whereas annealing the crazed specimen atthe temperature near T

of the craze fibrils makes the fibrils bundle together.

Abstract

/Tg） hasbeen expressed as a function of the fibrils diameter （d）. From T

of craze fibrils

the value of fibrildiameter can be calculated. Annealing the crazed specimen at room temperature makes the fibrilsplastically deform and cause the fibrils to thin slightly

whereas annealing the crazed specimen atthe temperature near T

of the craze fibrils makes the fibrils bundle together.

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