Polyethylene naphthalate (poly(ethylene 2,6-naphthalate) or PEN) is a polyester derived from naphthalene-2,6-dicarboxylic acid and ethylene glycol. As such it is related to poly(ethylene terephthalate), but with superior barrier properties.
Two major manufacturing routes exist for polyethylene naphthalate (PEN), i.e. an ester or an acid process, named according to whether the starting monomer is a diester or a diacid derivative, respectively. In both cases for PEN, the glycol monomer is ethylene glycol. Solid-state polymerization (SSP) of the melt-produced resin pellets is the preferred process to increase the average molecular weight of PEN.[1]
Applicationsedit
Because it provides a very good oxygen barrier, it is well-suited for bottling beverages that are susceptible to oxidation, such as beer. It is also used in making high performance sailcloth.
Significant commercial markets have been developed for its application in textile and industrial fibers, films, and foamed articles, containers for carbonated beverages, water and other liquids, and thermoformed applications. It is also an emerging material for modern electronic devices.
PEN is used for manufacturing high performance fibers that have very high modulus and better dimensional stability than PET or Nylon fibers.
PEN is used as the substrate for most Linear Tape-Open (LTO) cartridges.
It also has been found to show excellent scintillation properties and is expected to replace classic plastic scintillators.[2]
Benefits when compared to polyethylene terephthalateedit
The two condensed aromatic rings of PEN confer on it improvements in strength and modulus, chemical and hydrolytic resistance, gaseous barrier, thermal and thermo-oxidative resistance and ultraviolet (UV) light barrier resistance compared to polyethylene terephthalate (PET). PEN is intended as a PET replacement, especially when used as a substrate[3] for flexible integrated circuits.
Referencesedit
^Lillwitz LD (2001). "Production of Dimethyl-2,6-Naphthalenedicarboxylate: Precursor to Polyethylene Naphthalate". Applied Catalysis A: General. 221 (1–2): 337–358. doi:10.1016/S0926-860X(01)00809-2.
^Nakamura H, Shirakawa Y, Takahashi S, et al. (2011). "Evidence of deep-blue photon emission at high efficiency by common plastic". EPL. 95 (2): 22001. doi:10.1209/0295-5075/95/22001. hdl:2433/141973.
polyethylene, naphthalate, poly, ethylene, naphthalate, polyester, derived, from, naphthalene, dicarboxylic, acid, ethylene, glycol, such, related, poly, ethylene, terephthalate, with, superior, barrier, properties, names, other, names, poly, ethylene, naphtha. Polyethylene naphthalate poly ethylene 2 6 naphthalate or PEN is a polyester derived from naphthalene 2 6 dicarboxylic acid and ethylene glycol As such it is related to poly ethylene terephthalate but with superior barrier properties Polyethylene naphthalate Names Other names Poly ethylene 2 6 naphthalate PEN Identifiers CAS Number 24968 11 4 ChemSpider none Properties Chemical formula C14H10O4 n Except where otherwise noted data are given for materials in their standard state at 25 C 77 F 100 kPa Infobox references Contents 1 Production 2 Applications 3 Benefits when compared to polyethylene terephthalate 4 ReferencesProduction editTwo major manufacturing routes exist for polyethylene naphthalate PEN i e an ester or an acid process named according to whether the starting monomer is a diester or a diacid derivative respectively In both cases for PEN the glycol monomer is ethylene glycol Solid state polymerization SSP of the melt produced resin pellets is the preferred process to increase the average molecular weight of PEN 1 Applications editBecause it provides a very good oxygen barrier it is well suited for bottling beverages that are susceptible to oxidation such as beer It is also used in making high performance sailcloth Significant commercial markets have been developed for its application in textile and industrial fibers films and foamed articles containers for carbonated beverages water and other liquids and thermoformed applications It is also an emerging material for modern electronic devices PEN was the medium for Advanced Photo System film discontinued in 2011 PEN is used for manufacturing high performance fibers that have very high modulus and better dimensional stability than PET or Nylon fibers PEN is used as the substrate for most Linear Tape Open LTO cartridges It also has been found to show excellent scintillation properties and is expected to replace classic plastic scintillators 2 Benefits when compared to polyethylene terephthalate editThe two condensed aromatic rings of PEN confer on it improvements in strength and modulus chemical and hydrolytic resistance gaseous barrier thermal and thermo oxidative resistance and ultraviolet UV light barrier resistance compared to polyethylene terephthalate PET PEN is intended as a PET replacement especially when used as a substrate 3 for flexible integrated circuits References edit Lillwitz LD 2001 Production of Dimethyl 2 6 Naphthalenedicarboxylate Precursor to Polyethylene Naphthalate Applied Catalysis A General 221 1 2 337 358 doi 10 1016 S0926 860X 01 00809 2 Nakamura H Shirakawa Y Takahashi S et al 2011 Evidence of deep blue photon emission at high efficiency by common plastic EPL 95 2 22001 doi 10 1209 0295 5075 95 22001 hdl 2433 141973 Calamia J 2011 The Plastic Processor IEEE Spectrum Retrieved 24 Sep 2019 Retrieved from https en wikipedia org w index php title Polyethylene naphthalate amp oldid 1193524895, wikipedia, wiki, book, books, library,
