Difference between revisions of "Hydroxyethyl cellulose"

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== Description ==
 
== Description ==
  
A cellulose ether with a hydroxyethyl functional group substitution. Hydroxyethyl cellulose (HEC) is a nonionic [http://cameo.mfa.org/materials/fullrecord.asp?name=thermoplastic thermoplastic] polymer that is soluble in [http://cameo.mfa.org/materials/fullrecord.asp?name=water water] as well as many organic [http://cameo.mfa.org/materials/fullrecord.asp?name=solvent solvents]. It is a white granular solid that is used as an [http://cameo.mfa.org/materials/fullrecord.asp?name=emulsifier emulsifier], [http://cameo.mfa.org/materials/fullrecord.asp?name=stabilizer stabilizer], [http://cameo.mfa.org/materials/fullrecord.asp?name=thickening%20agent thickener], and film former in many types of solutions such as foods, cosmetics, [http://cameo.mfa.org/materials/fullrecord.asp?name=paint paints], and [http://cameo.mfa.org/materials/fullrecord.asp?name=glaze glazes]. It is also used as a [http://cameo.mfa.org/materials/fullrecord.asp?name=size sizing agent] and [http://cameo.mfa.org/materials/fullrecord.asp?name=consolidant consolidant]. Hydroxyethyl cellulose discolors and becomes insoluble with thermal aging (Feller and Wilt 1990).
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A cellulose ether with a hydroxyethyl functional group substitution. Hydroxyethyl cellulose (HEC) is a nonionic [[thermoplastic]] polymer that is soluble in [[water]] as well as many organic [[solvent|solvents]]. It is a white granular solid that is used as an [[emulsifier]], [[stabilizer]], [[thickening agent|thickener]], and film former in many types of solutions such as foods, cosmetics, [[paint|paints]], and [[glaze|glazes]]. It is also used as a [[size|sizing agent]] and [[consolidant]]. Hydroxyethyl cellulose discolors and becomes insoluble with thermal aging (Feller and Wilt 1990).
  
 
== Synonyms and Related Terms ==
 
== Synonyms and Related Terms ==

Revision as of 14:05, 16 January 2014

Description

A cellulose ether with a hydroxyethyl functional group substitution. Hydroxyethyl cellulose (HEC) is a nonionic Thermoplastic polymer that is soluble in Water as well as many organic solvents. It is a white granular solid that is used as an Emulsifier, Stabilizer, thickener, and film former in many types of solutions such as foods, cosmetics, paints, and glazes. It is also used as a sizing agent and Consolidant. Hydroxyethyl cellulose discolors and becomes insoluble with thermal aging (Feller and Wilt 1990).

Synonyms and Related Terms

HEC; hydroxyethylcellulose; hidroxietilcelulosa (Esp.); hidroxietilcelulose (Port.)

Examples: Natrosol® [Aqualon]; Cellosize® [Dow]; Tylose® H [SE Tylose]

FTIR

AaiHYDROXYETHYLCELL.jpg


Other Properties

Soluble in water, ethylene glycol. Insoluble in ethyl ether. pH = 6.5-8.5. Softening point = 135-140C.

Refractive Index 1.51

Additional Information

R.Feller, M.Wilt, Evaluation of Cellulose Ethers for Conservation, in Research in Conservation Series, Getty Conservation Institute, 1990.

Comparisons

Physical Properties for Selected Thermoplastic Resins

General Characteristics of Polymers


Authority

  • Book and Paper Group, Paper Conservation Catalog, AIC, 1984, 1989

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