nyuuzyou/wikis huggingface dataset:
Polyacrylonitrile

== Description ==
A polymer made from the addition polymerization of acrylonitrile. Polyacrylonitrile was first made in the late 1930s and it quickly became an important types of synthetic rubber. During W.W.II, polyacrylonitrile was made into fibers for military use. After the war, DuPont began to commercially produce acrylonitrile fibers under the brand name of Orlon® in 1950. Initially all acrylonitrile fibers were called acrylic fibers. As processing variations developed, the FTC divided the types of fibers into the following two classes: 
* Acrylic fibers - contain at least 85% acrylonitrile units 
* Modacrylic fibers - contain 35-85 % acrylonitrile units. Pure polyacrylonitrile is also used for moldings, shoe soling and wall panels. 
See acrylic fiber, and modacrylic fiber.
[[[SliderGallery rightalign|CreslanTestfabrics.jpg~FTIR]]]
== Synonyms and Related Terms ==
PAN; poliacrilonitrilo (Esp.); polyacrylonitrile (Fr.); poliacrilonitrile (It.); poliacrilonitrilo (Port.); polyvinyl cyanide 
Examples: Fiber A; Orlon® [DuPont]; Acrilan® [Solutia]; Dynel® [Union Carbide]; Courtelle® [Courtaulds];
== Physical and Chemical Properties ==
* Soluble in dimethylformamide, dimethylsulfoxide. 
* Insoluble in alcohols, diethyl ether, water, hydrocarbons.
* Density = 1.14-1.17 g/ml
== Comparisons ==
== Resources and Citations ==
* Theodore J. Reinhart, 'Glossary of Terms', Engineered Plastics, ASM International, 1988
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
* J.Gordon Cook, Handbook of Textile Fibres:II Man-made Fibres, 5th edition, Merrow Publishing Co., Durham, England, 1984, p393.
* Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Polyamide-imide

== Description ==
A family of thermosetting resins. Polyamide-imide (PAI) resins are made by the combination of trimellitic anhydride with aromatic diamines. The resin is cured with heat to form a stable polymer that is unaffected by most solvents or temperature up to 290C. It is also resistant to ultraviolet light and gamma radiation. PAI resins are used for laminates, valves, bearings, gears, printed circuit boards and electrical components.
== Synonyms and Related Terms ==
PAI; polyamide imide; poliamida-imida (Esp.); poliamida-imida (Port.); polyamide-imide; 
Examples: Torlon [Solvay]
== Physical and Chemical Properties ==
* Resistant to most solvents and some mineral acids
* Attacked by alkalis, oxidizing acids, formic acid.
Category:Materials database
Polyarylates

== Description ==
A family of aromatic polyesters. Polyarylates are made by reacting aromatic dicarboxylic acids with diphenols. They are tough, durable, heat-resistant thermoplastic polymers. Polyarylates are used for aerospace applications and for electronics. Examples are:
* PEEK - polyetheretherketone
* PEK - polyetherketone
* PEKK - polyetherketoneketone
* PAEK - polyaromaticetherketone
== Synonyms and Related Terms ==
Examples include: PEEK; polyetheretherketone; PEK; polyetherketone; PEKK; polyetherketoneketone; PAEK; polyaromaticetherketone
== Physical and Chemical Properties ==
* Resistant to chemicals and most solvents.
* Attacked by chlorinated solvents.
Category:Materials database
Polybenzimidazole

== Description ==
A thermoplastic polymer that is stable at high temperatures. Polybenzimidazole (PBI) is made from the reaction of diphenyl isophthalate with diaminobenzidine. It is is primarily used to produce temperature and flame resistant fibers. PBI fibers are resistant to chemicals, do not burn or melt and produce minimal smoke. The fibers accept colors well using basic dyes. PBI fabric is used for flame-retardant and protective apparel, industrial clothing, aircraft upholstery, and insulation.
== Synonyms and Related Terms ==
PBI; polibencil imidazol (Esp.); polibenzimidazol (Port.) 
Examples: PBI fiber [Celanese]; Celazole
== Risks ==
* Nonflammable.
== Physical and Chemical Properties ==
* Resistant to chemicals
* Moisture regain = 15%
* Elongation = 27%
* Tenacity = 2.7 g/denier
* Composition = [-C7H6N2-]n
* Density = 1.43 g/ml
==Resources and Citations==
* Theodore J. Reinhart, 'Glossary of Terms', Engineered Plastics, ASM International, 1988
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Hoechst Celanese Corporation, Dictionary of Fiber & Textile Technology (older version called Man-made Fiber and Textile Dictionary, 1965), Hoechst Celanese Corporation, Charlotte NC, 1990
* Marjory L. Joseph, Introductory Textile Science, Holt, Rinehart and Winston, Fort Worth, TX, 1986
Category:Materials database
Polybor

== Description ==
[U.S.Borax] A registered trademark for a series of compounds that contains disodium octaborate tetrahydrate as the active ingredient. Polybor® borates have been used as wood preservatives to kill wood boring beetles and termites. They are also used as flame retardants, emulsifiers, corrosion inhibitors, and as a soft abrasive in hand and metal cleaners.
== Synonyms and Related Terms ==
Polybor 87
== Risks ==
* Borax: SDS
==Physical and Chemical Properties==
Composition	Na2B8O13-4H2O
CAS 	12280-03-4
==Resources and Citations==
* Borax: Product Data sheet 
* T.Frey, J.vonReis, Z.Barov "An Evaluation of Biocides for Control of the Biodeterioration of Artifacts at Hearst Castle" ICOM Preprints, Washington, DC 1993 p.875-879.
Category:Materials database
Polybutadiene

== Description ==
A thermoplastic resin which is similar to natural rubber. Polybutadiene is made by the polymerization of 1,3-butadiene with a stereospecific organometallic catalyst in order to obtain the cis isomer. Polybutadiene has good wear and crack resistance. It is used in tire treads and as a coating. It is often blended with styrene to form rubber SBR and blended with styrene and acrylonitrile to form butadiene styrene resin ABS rubbers.
[[[SliderGallery rightalign|aaiPButadiene_RUBR.jpg~FTIR]]]
== Synonyms and Related Terms ==
PBR (butadiene rubber); polybutadiene elastomer (AAT); polibutadieno (Esp.); poli butadiene (It.); polibutadieno (Port.)
== Risks ==
* Toxic by ingestion and inhalation
* Skin contact may cause irritation.Combustible.
* EChemie: SDS
== Physical an Chemical Properties ==
* Soluble in aliphatic and aromatic hydrocarbons
* Insoluble in acetone, diethyl ether.
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 127
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
* Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Polybutylene

== Description ==
Any of several thermoplastic resins made from the polymerization of butene or isobutene. Polybutylene resins can be prepared in molecular weight ranges from 600 to 60,000. They have good toughness, flexibility and moisture barrier properties. Polybutylenes are used as lubricants, adhesives, sealants, films, coatings, polymer modifiers, and elastomers.
== Synonyms and Related Terms ==
polybutene; polyisobutylene; polyisobutene; butyl rubber; polibutileno (Esp.); polibutilene (It.); polibutileno (Port.) 
Examples: Vistanex [Exxon]
[[[SliderGallery rightalign|aaiP-BUTENE.jpg~FTIR]]]
== Risks ==
* Combustible.
==Physical and Chemical Properties==
* Soluble in hexane, benzene, carbon tetrachloride. 
* Insoluble in acetone, methanol, methyl acetate.
* Density = 0.91-0.93
==Resources and Citations==
* Theodore J. Reinhart, 'Glossary of Terms', Engineered Plastics, ASM International, 1988
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
* Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Polybutylene terephthalate

== Description ==
A thermoplastic resin that is similar to polyethylene terephthalate. Polybutylene terephthalate (PBT) resins have high strength, good dimensional stability and resistance to moisture, heat and chemicals. PBT has been prepared as a fiber and in sheets as an impact-resistant glass substitute. It is also used in sporting goods, toys, household products and electrical component housings.
== Synonyms and Related Terms ==
PBT; poli (tereftalato de butileno) (Esp.); poli butilene tereftalato (It.); tereftalato de polibutileno (Port.) 
Examples: Ultradur® [BASF]; Pocan® [Lanxess]; Celanex® [Ticona]
== Physical and Chemical Properties ==
* Moisture regain = 0.4%
Category:Materials database
Polychlorotrifluoroethylene

== Description ==
A transparent, thermoplastic fluorocarbon made by the polymerization of chlorotrifluoroethylene. Polychlorotrifluoroethylene (PCTFE) is resistant to weathering, chemicals, heat, and moisture. The optically clear polymer has high impact strength and high impermeability. PCTFE is used for as a chemical barrier for corrosion control and to prevent contamination. Films of PCTFE can be laminated, metallized, heat-sealed, and printed. It is used as one of the layers in Aclar barrier film because of its outstanding vapor barrier properties.
[[[SliderGallery rightalign|aaiKEL-F.jpg~FTIR]]]
== Synonyms and Related Terms ==
PCTFE; chlorotrifluoroethylene polymer; fluorothene; fluoroteno (Esp.); policlorotrifluoroetileno (Esp.); policlorofluoroetilene (It.); policlorotrifluoroetileno (Port.) 
Examples: Kel-F [3M]; Aclar® [AlliedSignal]
== Risks ==
* Nonflammable.
== Physical and Chemical Properties ==
Unaffected by corrosive chemicals, organic solvents, oils, greases
Composition 	[-CF2-CCl-]n
Density 	2.10-2.15 g/ml
Refractive Index	1.43
== Resources and Citations ==
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002
Category:Materials database
Polycite

== Description ==
[Mitsubishi Petrochemical] A brand name for a lacquer solution containing cashew gum. Cashew gum is a hard, yellowish-brown exudation from the bark of the cashew-nut tree, Anacardium occidentale. It is used for inks, insecticides, varnishes, bookbinders' gum and for tanning leather. Cashew gum has also been used as a substitute for lacquer in high gloss finishes.
== Synonyms and Related Terms ==
cashew; anacardium
Category:Materials database
Polycyclohexanone

== Description ==
A synthetic polymer composed polymerized cyclohexanone and/or methyl cyclohexanone. Polycyclohexanones, or ketone resins, were first patented in 1930 by BASF. They are soluble in turpentine and form a clear, colorless coating. Polycyclohexanones form a film that is harder with less wrinkling, yellowing and blooming than dammar. Ketone resins have a relative low molecular weight (400-500) for a polymer and a high refractive index (~1.53) Because polycyclohexanone coatings are hard and brittle, however, many formulations add a plasticizer for flexibility and many of the plasticizers tend to yellow. Ketone resins have been used for picture varnishes and for retouching. They oxidize with age to become brittle and less soluble.
== Synonyms and Related Terms ==
ketone resin; policiclohexano (Esp.); policicloesanone (It.); policiclohexano (Port.) 
Examples: MS2 [Linden Nazareth]; AW-2 [BASF]; Ketone Resin N [BASF]; Laropal K 80; Rembrandt Varnish[Talens];
== Physical and Chemical Properties ==
Soluble in turpentine, mineral spirit.
== Comparisons ==
==Resources and Citations==
* R.de la Rie, A. Shedrinsky, "The Chemistry of Ketone Resins and the Synthesis of a Derivative with Increased Stability and Flexibility" Studies in Conservation, 34:9-19, 1989.
* Hermann Kuhn, Conservation and Restoration of Works of Art and Antiquities, Butterworths, London, 1986
* Kurt Wehlte, The Materials and Techniques of Painting, Van Nostrand Reinhold Co., New York, 1975
* Paintings Specialty Group, Painting Conservation Catalog, Wendy Samet (ed.), AIC, Washington, DC, 1998
Category:Materials database
Polyester

== Description ==
Polyester is a class of polymers that contains ester in its main functional group (which means that at least one hydroxyl group is replaced with an alkoxy group). Polyesters are widely used in the clothing and textile industries, as well as packaging, consumer goods, and more. Polyesters may be thermoplastic or thermoset, often depending on the ester group attached to the polymer chain.
See polyester fiber, polyester film, or polyester resin.
Table of Selected Types of Polyesters 
Polymer Name 	Common or Commercial Names 	Potential Concerns	Links
Polybutylene succinate (PBS) 	1 	Biodegradable 	Wikipedia
Plybutylene terephthalate (PBT) 	2 	4 	Polybutylene_terephthalate
Polycarbonate (PC) 	3 	6 	Polycarbonate
Polycaprolactone (PCL) 	Varaform 	Biodegradable 	Wikipedia
Polyethylene adipate (PEA) 	4 	8 	Wikipedia
Polyethylene naphthalate (PEN) 	Advance Photo System film 	10 	Wikipedia
Polyethylene terephthalate (PET) 	Polyester fiber; Melinex, Mylar, Dacron, Terylene, Teijin Fibers	 	[[Polyethylene terephthalateWhile this may be a commonly applied term for PET, the use of “polyester” as a synonym for PET is an oversimplification. Always clarify which polyester is used in a product if on a product page it is only listed as “polyester”.]]
Polyglycocide or polyglycolic acid (PGA)	Dexon, Vicryl 	Biodegradable 	Wikipedia
Polyhydroxyalkanoates (PHA) 	Biopol 	Biodegradable 	Wikipedia
Polyhydroxybutyrate (PHB) 	4 	Biodegradable 	12
Polylactic acid (PLA) 	3 	Biodegradable 	Polylactic acid
Polytrimethylene terephthalate (PTT) 	4 	8 	Wikipedia
Vectran LCP) 	Liquid Crystal Polymer 	10 	Wikipedia
== Applications ==
== Personal Risks ==
== Environmental Risks ==
== Collection Risks ==
The risk to collections is entirely dependent on which polyester is in use. 
The biodegraded polymers have the risk of attracting pests and giving off volatile organic compounds that may be damaging. 
The polyester terephthalate polymers generally are stable, and are typically useful vapor barriers. However this vapor barrier may trap damaging gases or water with an at risk object (McGath, 2017, Hall 2019) Additionally, there are instances where PET has been engineered to be acidic (https://www.innovationintextiles.com/skin-friendly-polyester-has-stable-ph-level/)
==Physical and Chemical Properties ==
==Resources and Citations==
* Contributions: Molly McGath, AIC Plastics Panel, 2020.
* McGath MK, Hall AKI, Zaccaron S, Wallace J, Minter WD, Mcguiggan PM (2017). Stewing in its own juices? The permeability of PET by water and acetic acid. Restaurator 38(4). 355-382.
* Hall AKI, McGath MK, Minter WD, McGuiggan PM (2020). The breathability of PET to water vapor: Thickness effects. Journal of the American Institute for Conservation 59(1). 40-52.
* https://www.innovationintextiles.com/skin-friendly-polyester-has-stable-ph-level/
Category:Materials database
Polyester felt

==Description==
A mechanically bonded, non-woven fabric composed of 100% Polyester fibers. Polyester felt is thick, soft texture with good tensile strength and holds its shape well. It is often used for cushioning in containers and drawers because the texture minimizes the shifting of objects. 
See felt for comparisons.
==Synonyms and Related Terms==
Polyester Polyfelt Liner; White Polyfelt Liner
Note: the name 'Polyfelt' is registered by TenCate for a geotextile made from non-woven, continuous fibers of polypropylene.
==Physical and Chemical Properties==
* Heat resistance: Generally has good heat resistance, but the specific temperature tolerance varies depending on the type of polyester felt. Some types can withstand temperatures up to 300°F (150°C).   
* Chemical resistance: Resistant to many chemicals, including acids and alkalis.   
* Moisture resistance: Polyester fibers are hydrophobic, meaning they don't absorb much water. This makes polyester felt resistant to mildew and mold.   
* UV resistance: Has good resistance to fading from sunlight.  
==Forms and Sizes==
Available in rolls and sheets. Thicknesses of 1/8" 1/4" and 1/2" are available.
== Resources and Citations ==
* Safe Plastics and Fabrics for Exhibit and Storage, Conserve O Gram 18/2, National Park Service, September 2010.
* McMaster-Carr: Polyester felt
* Sutherland Felt: Polyester and polypropylene felts
Category:Materials databaseCategory:MWG Category:Cushioning
Polyester film

== Description ==
An extruded sheet of polyester resin. Polyester (polyethylene terephthalate) films are typically stiff but flexible and highly transparent. First introduced in the early 1950s, they are chemically inert and dimensionally stable and provide an effective barrier to moisture, oil and grease. Polyester films, such as Mylar®, are used for photographic film, storage sleeves, drafting and linings.
== Synonyms and Related Terms ==
PET film; película de poliéster (Esp.); film polyester (Fr.); feuille polyester (Fr.); pellicule polyester (Fr.); film di poliestere (It.); película de poliéster (Port.); drafting film 
Examples: Geofilm [Hughes-Owens]; Transpagra; Mylar® [DuPont Teijin]; Melinex® [DuPont Teijin]; Cronar® [DuPont Teijin]; Hostaphan 43SM [Mitsubishi];
==Applications==
* Barrier films
* Interleaving and encapsulation
* Transparent windows in storage boxes
* Heat-sealed packaging
* Lamination
* Printing
==Risks==
* Difficult to ignite. 
* Burns with a shiny, yellow-orange, sooty flame. Self-extinguishing.
== Physical and Chemical Properties ==
* Resistant to weak acids, weak alkalis, bleach and most organic solvents. 
* Degrades in strong alkalis, strong acids, cresol.
==Resources and Citations==
* Jean Tetreault Products Used in Preventive Conservation CCI, December 2017. Link
* DuPont Teijin: [Films Database]
* Rachael Perkins Arenstein, Lisa Goldberg, and Eugenie Milroy, ‘Support and Rehousing for Collection Storage’ In ‘Preventive Conservation: Collection Storage’ Lisa Elkin and Christopher A. Norris (eds.), Society for the Preservation of Natural History Collections, New York. 2019. 
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Book and Paper Group, Paper Conservation Catalog, AIC, 1984, 1989
Category:Materials databaseCategory:MWGCategory: Sheet/Film, Plastic
Polyether-imide

== Description ==
A high-temperature, thermoplastic polymer. Introduced in 1982, polyether-imide (PEI) is transparent, tough and retains its properties to about 170C. It has good resistance to UV and gamma radiation. PEI is used as a reinforcing fiber and as a fire-resistant component in electrical boards, jet engines, and automobiles.
== Synonyms and Related Terms ==
polyetherimide (AAT); PEI; Ultem [General Electric Co.]
==Physical and Chemical Properties==
* Resistant to aliphatic hydrocarbons, alcohols, and dilute bases. 
* Resistant to high temperatures and to burning.
* Tg = 215 C
==Resources and Citations==
* Theodore J. Reinhart, 'Glossary of Terms', Engineered Plastics, ASM International, 1988
* Hoechst Celanese Corporation, Dictionary of Fiber & Textile Technology (older version called Man-made Fiber and Textile Dictionary, 1965), Hoechst Celanese Corporation, Charlotte NC, 1990
* Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Polyether sulfone

== Description ==
A high temperature, thermoplastic polymer. Polyether sulfones have been used for high stability fiber that are resistant to heat, flames, and chemicals.
== Synonyms and Related Terms ==
polyether sulfone; polyether sulphone (Br.); PESV; PES
== Risks ==
* Flame resistant.
==Physical and Chemical Properties==
Resistant to high temperatures and chemicals.
Category:Materials database
Polyetheretherketone

== Description ==
A thermoplastic, aromatic polyester. Polyetheretherketone, or PEEK, is a tough, durable, heat-resistant polymer. Polyetheretherketone is used for aerospace applications and for electronics.
See also polyarylate.
[[[SliderGallery rightalign|aaiPEEK.jpg~FTIR]]]
== Synonyms and Related Terms ==
PEEK; poli(ter-ter-cetona) (Esp.); polyetheretherketone (Fr.); Vestakeep [Evonik Degussa]; Ketron [Quadrant]; Ketaspire [Solvay]
==Physical and Chemical Properties==
* Resistant to chemicals and most solvents.
* Attacked by chlorinated solvents.
==Resources and Citations==
* Hoechst Celanese Corporation, Hoechst Celanese Corporation, Dictionary of Fiber & Textile Technology (older version called Man-made Fiber and Textile Dictionary, 1965), Hoechst Celanese Corporation, Charlotte NC, 1990
* Theodore J. Reinhart, Theodore J. Reinhart, 'Glossary of Terms', Engineered Plastics, ASM International, 1988
Category:Materials database
Polyethylene fiber

== Description ==
A manufactured fiber made from the polymers or copolymers of ethylene. Ethylene was first polymerized in 1933 by ICI in England. In 1954, Karl Ziegler developed a process for higher weight polyethylene that allowed it to be spun into fibers. These fibers, from high density polyethylene, are lightweight, smooth and white with a slightly waxy feel. They are resistant to wear, creases, acids, alkalis, moisture, fungi and insects. Polyethylene fibers do not accept dyes, so they are colored by mixing pigments in the molten polymer prior to extrusion. The fibers slowly degrade in sunlight and can be stained by oils. Polyethylene fibers are used to make waterproof paper (Tyvek®), ropes and fabrics for upholstery for industrial and outdoor applications.
== Synonyms and Related Terms ==
polyethylene fibre; polyolefin; olefin; high density polyethylene fiber; HDPE fiber; Tyvek® [DuPont]; Reevon; Wynene; Velon; Courlene; Drylene; Spectra® [AlliedSignal]; Dy-neema® [Toyoba/Dyneema];fibras de poliolefinas(Esp.)
== Risks ==
Burns with a heavy, sooty, waxy smoke. Degraded by ultraviolet light and sulfur containing pollutants. May contain additives ( such as antioxidant BHT) that can migrate and cause staining.
== Physical and Chemical Properties ==
* Soluble in perchloroethylene (do not dry-clean) and most chlorinated and aromatic solvents when gently heated. 
* Resistant to strong acids, alkalis, bleaches. 
* Cross sections = circular or elliptical. 
For HDPE fibers: 
* Tenacity = 5.0-8.0 g/denier; 
* Moisture regain =
Melting Point 	130-138
Density 	0.95-0.96 g/ml
Refractive Index	1.52
== Comparisons ==
==Resources and Citations==
* Hoechst Celanese Corporation, Dictionary of Fiber & Textile Technology (older version called Man-made Fiber and Textile Dictionary, 1965), Hoechst Celanese Corporation, Charlotte NC, 1990
* Rosalie Rosso King, Textile Identification, Conservation, and Preservation, Noyes Publications, Park Ridge, NJ, 1985
* Identification of Textile Materials, The Textile Institute, Manchester, England, 1985
* Fairchild's Dictionary of Textiles, Phyllis G.Tortora, Robert S. Merkel (eds.), Fairchild Publications, New York City, 7th edition, 1996
* J.Gordon Cook, Handbook of Textile Fibres:II Man-made Fibres, Merrow Publishing Co. , Durham, England
* M. Joseph, Introductory Textile Science, Holt Reinhold & Winston, Fort Worth, 1986, p. 135.
Category:Materials database