Study on thermal stability and chemical structure of polyamide blended with small amount of Cu

Tsuyoshi Arai, Tomonaga Ueno, Takafumi Kajiya, Tomoyuki Ishikawa, Kunihiko Takeda

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The thermal stability and the chemical structure of Polyamide 66 (PA66) blended with a small amount of copper have been studied. The thermal degradation of the blend with 35 ppm or more of copper was restrained and no strong influence of the concentration of copper was observed. The molecular weight of PA66 decreased by the thermal aging process but the amount of decrease of the blend was smaller than that of the non-blend. The water uptake of the blend increased. The chemical structure, which was observed by IR and NMR, changed slightly by blending with copper after aging at higher temperatures. Multiple items influenced the thermal stability of PA66 blended with a small amount of copper instead of just one. Namely, the main chain of PA66 is cut by heat and the degree of the cut is restrained by the copper. The diffusion time of copper atoms that disperse uniformly in the PA66 matrix is short enough to cover the individual amide groups and the effect enlarges the entire configuration of the PA66 chain to enhance the thermal stability.

Original languageEnglish
Pages (from-to)380-386
Number of pages7
JournalKobunshi Ronbunshu
Volume64
Issue number6
DOIs
Publication statusPublished - 2007 Jun
Externally publishedYes

Fingerprint

Nylons
Polyamides
Copper
Thermodynamic stability
copper
Thermal aging
water uptake
chemical structure
Amides
nuclear magnetic resonance
Pyrolysis
Aging of materials
Molecular weight
Nuclear magnetic resonance
Atoms
degradation
matrix
Water

Keywords

  • Chemical structure
  • Copper
  • Polyamide
  • Tensile strength
  • Thermal stability

ASJC Scopus subject areas

  • Polymers and Plastics
  • Environmental Science(all)
  • Materials Science (miscellaneous)
  • Chemical Engineering (miscellaneous)
  • Ceramics and Composites

Cite this

Study on thermal stability and chemical structure of polyamide blended with small amount of Cu. / Arai, Tsuyoshi; Ueno, Tomonaga; Kajiya, Takafumi; Ishikawa, Tomoyuki; Takeda, Kunihiko.

In: Kobunshi Ronbunshu, Vol. 64, No. 6, 06.2007, p. 380-386.

Research output: Contribution to journalArticle

Arai, Tsuyoshi ; Ueno, Tomonaga ; Kajiya, Takafumi ; Ishikawa, Tomoyuki ; Takeda, Kunihiko. / Study on thermal stability and chemical structure of polyamide blended with small amount of Cu. In: Kobunshi Ronbunshu. 2007 ; Vol. 64, No. 6. pp. 380-386.
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