THERMOCHROMIC EFFECTS OF LEUCO DYES STUDIED IN POLYPROPYLENE

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THERMOCHROMIC EFFECTS OF LEUCO DYES STUDIED IN POLYPROPYLENE

Updated：2021-06-21

- THERMOCHROMIC EFFECTS OF LEUCO DYES STUDIED IN POLYPROPYLENE
- Issue 4, Pages: 363-368(2006)
- Affiliations：
  
  1.   Fraunhofer Institute for Applied Polymer Research
  2.   Fraunhofer Institute for Applied Polymer Research Volmerstrasse 7B
  3.    Berlin  ,12489
  4.   Germany
- Author bio：
- Funds：
  
  This work was financially supported by the Bundesministerium fur Bildung und Arbeit （No. 0329820E）.()
- DOI：
  CLC： O632.12
- Published：2006
- Accepted：
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[1]Arno Seeboth,Detlef L(o|¨)tzsch,Elvira Potechius,Renate Vetter.THERMOCHROMIC EFFECTS OF LEUCO DYES STUDIED IN POLYPROPYLENE[J].Chinese Journal of Polymer Science,2006(04):363-368.

THERMOCHROMIC EFFECTS OF LEUCO DYES STUDIED IN POLYPROPYLENE[J]. 2006, (4): 363-368.
[1]Arno Seeboth,Detlef L(o|¨)tzsch,Elvira Potechius,Renate Vetter.THERMOCHROMIC EFFECTS OF LEUCO DYES STUDIED IN POLYPROPYLENE[J].Chinese Journal of Polymer Science,2006(04):363-368. DOI：

THERMOCHROMIC EFFECTS OF LEUCO DYES STUDIED IN POLYPROPYLENE[J]. 2006, (4): 363-368. DOI：

摘要

<正>A series of thermochromic polypropylene foils were prepared by embedding various leuco dye-developer-solvent systems in the polymer matrix. Bisphenol A

laurylgallate

ethylgallate and p-hydroxybenzoic acid methyl ester were used as developers

crystal violet lactone and 3

3-bis-（1-n-buryl-2-methyl-3-indolyl）-phthalide as dyes and 1-octanoic acid methyl ester as solvent. The molar ratio between the three components of the investigated leuco dye-developer-solvent systems was kept constant. All obtained polypropylene foils exhibit an excellent thermochromic behavior. The foils

prepared by extrusion technology

switch from color to colorless with increasing temperature. The influence of molecular structure of the developer on the intensity of the colored state and the influence of a developer-surfactant complex on the resulting thermochromic properties were investigated. The results are presented and discussed in detail according to a molecular model suggesting that the ring-opening process of the leuco dye is triggered by the formation of dye-developer complexes via H-bondings.

Abstract

A series of thermochromic polypropylene foils were prepared by embedding various leuco dye-developer-solvent systems in the polymer matrix. Bisphenol A

laurylgallate

ethylgallate and p-hydroxybenzoic acid methyl ester were used as developers

crystal violet lactone and 3

prepared by extrusion technology

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