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This table highlights polar/dispersion and acid—base breakouts of surface free energy, as well as Hansen Solubility Parameters and radius of interaction, for a variety of polymers. For all columns except polymer name, CAS #, and total Hansen Solubility Parameter (δ) the first row of data for each material is the average of surveyed values; the second row shows the standard deviation, with the number of data points (n) in parentheses. For n = 1, no standard deviation figure is shown. Click on any column's footnote for details. Click on any polymer name for original research results. An analogous table, which includes contact angle data, can be seen here. Comments on methodology and the like can be found here.

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Surface Free Energy Components by Polar/Dispersion and Acid—Base Analyses; and Hansen Solubility Parameters for Various Polymers

  Polar/Dispersion Acid-Base Hansen Parameters
Name(1)
ascendingdescending
CAS #(2)
ascending descending
γS(3)
ascending descending
γSd(4)
ascending descending
γSP(5)
ascending descending
γS(6)
ascending descending
γSLW(7)
ascending descending
γSAB(8)
ascending descending
γS+ (9)
ascending descending
γS- (10)
ascending descending
δ(11)
ascending descending
δD(12)
ascending descending
δP(13)
ascending descending
δH(14)
ascending descending
Ro(15)
ascending descending
Aluminum foil (b) 7429-90-5 41.2 31.7 9.5 - - - - - - - - - -
  2.47(2) 0.57(2) 1.91(2)
Amorphous fluoropolymer (Teflon AF) - - - - - - - - - - - - - -
 
Aramid (Kevlar) 26125-61-1 - - - - - - - - - - - - -
 
Cellulose triacetate 9012-09-3 - - - - - - - - - - - - -
 
Eicosane 112-95-8 - - - - - - - - - - - - -
 
Ethyl methacrylate (EMA) 97-63-2 42.0 38.8 3.2 - - - - - - - - - -
  1.06(2) 0.42(2) 0.64(2)
Ethylene-propylene-diene-monomer (EPDM) 25038-36-2 35.5 29.7 5.8 - - - - - - - - - -
  -(1) -(1) -(1)
Hexatriacontane 630-06-8 23.7 23.6 0.1 - - - - - - - - - -
  6.71(3) 6.78(3) 0.12(3)
2-Hydroxyethyl methacrylate (HEMA, ethylene glycol monoacrylate) 867-77-9 56.8 36.3 20.5 - - - - - - - - - -
  1.20(2) 0.49(2) 0.71(2)
Nafion 31175-20-9 - - - - - - - - - - - - -
 
Nylon 2 (polyglycine) 25718-94-9 50.1 27.9 22.2 - - - - - - - - - -
  -(1) -(1) -(1)
Nylon 4 24938-56-5 48.5 27.8 20.7 - - - - - - - - - -
  -(1) -(1) -(1)
Nylon 6,10 9008-66-6 - - - - - - - - - - - - -
 
Nylon 6,12 24936-74-1 67.0 62.0 4.7 - - - - - - - - - -
  -(1) -(1) -(1)
Nylon 7,7 - - - - - - - - - - - - - -
 
Nylon 8,8 - - - - - - - - - - - - - -
 
Nylon 9,9 - - - - - - - - - - - - - -
 
Nylon 10,10 - - - - - - - - - - - - - -
 
Paraffin 8002-74-2 28.1 28.1 0.0 - - - - - - - - - -
  3.71(7) 3.71(7) 0.00(7)
Phenoxy resin 26402-79-9 - - - - - - - - - - - - -
 
Polyacetylene (polyethyne) - 51.5 48.2 3.4 - - - - - - - - - -
  0.71(2) 1.77(2) 1.06(2)
Polyacrylamide 9003-05-8 52.3 26.5 25.8 - - - - - - - - - -
  -(1) -(1) -(1)
Poly(L-alanine) 25191-17-7 45.2 36.0 9.2 - - - - - - - - - -
  -(1) -(1) -(1)
Polybenzyl methacrylate 25085-83-0 - - - - - - - - - - - - -
 
Polyetheretherketone (PEEK) 29658-26-2 42.1 36.2 5.9 - - - - - - - - - -
  -(1) -(1) -(1)
Polyethyl acrylate (PEA) 9003-32-1 37.0 30.6 6.4 - - - - - - - - - -
  -(1) -(1) -(1)
Poly 2-ethylhexyl acrylate 9003-77-4 30.1 28.9 1.3 - - - - - - - - - -
  0.90(3) 1.57(3) 0.78(3)
Poly 2-ethylhexyl methacrylate 25719-51-1 - - - - - - - - - - - - -
 
Polyethylene oxide (PEO, PEG, polyethylene glycol) 25322-68-3 42.8 30.8 12.1 45.1 44.3 0.8 0.02 58.0 - - - - -
  0.07(2) 0.21(2) 0.14(2) 1.59(4) 1.34(4) 1.60(4) 0.03(4) 10.2(4)
Poly(heptadecafluorooctyl methacrylate) - 15.3 13.9 1.4 - - - - - - - - - -
  -(1) -(1) -(1)
Poly(heptafluoroisopropyl acrylate) - - - - - - - - - - - - - -
 
Poly(heptafluoroisopropyl methacrylate) - - - - - - - - - - - - - -
 
Poly(hexachlorobutadiene) - 41.5 40.7 0.8 - - - - - - - - - -
  -(1) -(1) -(1)
Poly(hexafluoropropylene) - 14.9 13.6 1.3 - - - - - - - - - -
  2.10(3) 1.48(3) 1.55(3)
Poly(hexyl methacrylate) 25087-17-6 30.0 27.6 2.5 - - - - - - - - - -
  0.00(2) 0.78(2) 0.78(2)
Poly(2-hydroxyethyl methacrylate) 24249-16-5 - - - - - - - - - - - - -
 
Polyimide (PI) 25038-81-7 47.0 38.2 8.8 44.0 42.5 1.5 0.1 6.0 - - - - -
  8.49(2) 16.8(2) 8.27(2) -(1) -(1) -(1) -(1) -(1)
Polylauryl methacrylate 25719-52-2 - - - - - - - - - - - - -
 
Polymethyl acrylate (PMA) 25087-26-7 41.4 35.6 5.8 - - - - - - - - - -
  0.85(4) 4.12(4) 4.45(4)
Poly(4-methyl pentene-1) - - - - - - - - - - - - - -
 
Poly a-methyl styrene 25014-31-7 - - - - - - - - - - - - -
 
Polymethylphenylsiloxane 9005-12-3 - - - - - - - - - - - - -
 
Polymethylphenylsilylene - - - - - - - - - - - - - -
 
Poly(nonafluoroisobutyl acrylate) - - - - - - - - - - - - - -
 
Polyoctyl methacrylate - - - - - - - - - - - - - -
 
Polyoxymethylene (POM, polyacetal, polymethylene oxide) 24969-26-4 39.0 26.2 12.8 - - - - - - - - - -
  7.99(2) 6.15(2) 1.84(2)
Polyphenyl methacrylate - - - - - - - - - - - - - -
 
Poly(phosphazene) - - - - - - - - - - - - - -
 
Poly n-propyl methacrylate 2210-79-9 - - - - - - - - - - - - -
 
Polypropylene glycol (PPG, polypropylene oxide) 25322-69-4 31.7 31.3 0.4 - - - - - - - - - -
  -(1) -(1) -(1)
Polypropylene isophthalate - 49.3 35.1 14.2 - - - - - - - - - -
  -(1) -(1) -(1)
Polystearyl methacrylate 25639-21-8 - - - - - - - - - - - - -
 
Polytetrahydrofuran (PTHF) 25190-06-1 31.9 27.2 4.7 - - - - - - - - - -
  0.00(2) 0.28(2) 0.28(2)
Polytetramethylene oxide - 31.9 27.4 4.5 - - - - - - - - - -
  -(1) -(1) -(1)
Polytrifluoroethylene 24980-67-4 27.5 22.0 5.4 25.4 23.1 2.3 1.8 0.7 - - - - -
  3.65(3) 2.10(3) 3.20(3) -(1) -(1) -(1) -(1) -(1)
Polyvinyl butyrate - 31.1 25.8 5.3 - - - - - - - - - -
  -(1) -(1) -(1)
Polyvinyl decanoate - 28.9 27.1 1.8 - - - - - - - - - -
  -(1) -(1) -(1)
Polyvinyl dodecanoate - 29.1 27.8 1.3 - - - - - - - - - -
  -(1) -(1) -(1)
Polyvinyl ethyl ether (polyethoxyethylene) 25104-37-4 - - - - - - - - - - - - -
 
Polyvinyl fluoride (PVF) 24981-14-4 38.6 34.0 4.6 37.5 35.6 1.9 2.8 6.0 - - - - -
  2.85(5) 5.72(5) 4.38(5) 1.30(3) 2.08(3) 0.85(3) 4.73(3) 6.62(3)
Polyvinyl formal 63450-15-7 - - - - - - - - - - - - -
 
Polyvinyl hexadecanoate - 30.9 29.8 1.1 - - - - - - - - - -
  -(1) -(1) -(1)
Polyvinyl hexanoate - 28.9 25.1 3.8 - - - - - - - - - -
  -(1) -(1) -(1)
Polyvinyl octanoate - 28.7 26.5 2.2 - - - - - - - - - -
  -(1) -(1) -(1)
Polyvinyl proprionate 25035-84-1 34.0 26.5 7.5 - - - - - - - - - -
  -(1) -(1) -(1)
Polyvinyl pyrrolidone (PVP) 9003-39-8 - - - 46.0 43.4 2.6 0.2 22.5 - - - - -
  3.61(2) 0.00(2) 3.61(2) 0.28(2) 10.2(2)
Polyxylylene (parylene) - 46.3 45.7 0.6 - - - - - - - - - -
  -(1) -(1) -(1)
Thermoplastic polyolefin (TPO) - 30.9 28.5 2.3 - - - - - - - - - -
  3.45(11) 2.80(11) 3.63(11)
Poly n-butyl acrylate 9003-49-0 32.2 28.6 3.6 - - - - - - - - -
  2.12(2) 2.55(2) 0.42(2)
Poly t-butyl methacrylate (PtBMA) 25189-00-9 30.5 26.5 4.0 - - - - - - - - - -
  0.00(2) 0.42(2) 0.42(2)
Polybutylene isophthalate - 47.8 34.9 12.9 - - - - - - - - - -
  -(1) -(1) -(1)
Polybutylene terephthalate (PBT) 26062-94-2 46.0 42.0 4.1 47.1 45.8 1.3 0.8 0.6 - - - - -
  0.24(4) 2.83(4) 2.92(4) -(1) -(1) -(1) -(1) -(1)
Polychloroprene 9010-98-4 43.6 38.8 4.8 - - - - - - - - - -
  0.00(2) 0.14(2) 0.14(2)
Polydiethylsiloxane (PDES) 63148-61-8 25.7 23.8 1.9 - - - - - - - - - -
  -(1) -(1) -(1)
Poly(dimethylaminoethylmethacrylate) - - - - - - - - - - - - - -
 
Polydimethylsiloxane (PDMS) 9016-00-6 205 19.2 1.3 - - - - - - - - - -
  1.16(6) 1.48(6) 0.66(6)
Polyepichlorohydrin 24969-06-0 - - - - - - - - - - - - -
 
Polyisobutylene (PIB, butyl (rubber) 9003-27-4 33.6 33.6 0.0 25.0 25.0 0.0 0.0 0.0 17.1 16.4 1.7 4.7 7.9
  -(1) -(1) -(1) -(1) -(1) -(1) -(1) -(1) 1.26(6) 2.15(6) 2.08(6) 2.46(6)
Polytetrafluoroethylene (PTFE) 9002-84-0 22.2 21.3 0.9 20.8 19.9 0.9 0.1 1.6 16.7 16.2 1.8 3.4 3.9
  2.54(9) 2.71(10) 0.96(9) 0.99(2) 0.35(2) 1.34(2) 0.20(2) 2.26(2) -(1) -(1) -(1) -(1)
Polybutadiene 9003-17-2 - - - - - - - - 18.0 17.5 2.3 3.4 6.6
  -(1) -(1) -(1) -(1)
Polyisoprene (PIP) 9003-31-0 - - - - - - - - 18.4 18.1 2.4 2.3 10.3
  2.32(3) 1.40(3) 2.66(3) 3.40(3)
Polychlorotrifluoroethylene 9002-83-9 29.5 22.6 6.9 - - - - - 16.5 15.6 2.5 4.7 5.8
  1.78(3) 1.19(3) 2.89(3) 2.10(3) 1.46(3) 2.44(3) 1.56(3)
Polypropylene (PP) (a) 30.1 27.7 2.4 32.0 31.7 0.3 0.2 0.4 18.0 17.7 2.9 1.2 6.2
  2.42(11) 2.46(11) 2.45(11) 3.99(8) 3.56(8) 0.76(8) 0.45(8) 0.76(8) 0.46(2) 2.80(2) 1.71(2) 1.76(2)
Polyphenylene oxide (PPO) 25134-01-4 46.0 36.0 10.0 - - - - - 20.1 17.9 3.1 8.5 8.6
  -(1) -(1) -(1) -(1) -(1) -(1) -(1)
Nylon 6 (polycaprolactum, aramid 6) 25038-54-4 42.7 33.1 9.6 45.3 42.5 2.8 0.2 9.6 20.3 17.0 3.4 10.6 5.1
  6.08(2) 2.69(2) 3.39(2) -(1) -(1) -(1) -(1) -(1) -(1) -(1) -(1) -(1)
Polyethylene (PE) 9002-88-4 34.2 32.8 1.4 31.7 31.5 0.2 0.1 0.9 17.6 16.8 3.8 3.8 6.6
  2.45(19) 2.89(19) 1.73(19) 2.86(10) 2.93(10) 0.27(10) 0.19(10) 1.39(10) 0.88(7) 1.94(7) 2.52(7) 2.84(7)
Fluorinated ethylene polypropylene (FEP) 25067-11-2 19.9 17.1 2.8 17.9 17.9 0.0 0.0 0.0 19.6 19.0 4.0 3.0 4.0
  2.90(3) 2.66(3) 2.51(3) -(1) -(1) -(1) -(1) -(1) -(1) -(1) -(1) -(1)
Nylon 11 25587-80-8 - - - - - - - - 20.5 17.0 4.4 10.6 5.1
  -(1) -(1) -(1) -(1)
Poly iso-butyl methacrylate (PIBMA) 9011-15-8 30.9 26.3 4.7 - - - - - 20.0 18.3 4.9 6.3 9.4
  0.00(2) 0.49(2) 0.49(2) 2.11(3) 0.93(3) 5.12(3) 2.10(3)
Polyphenylene sulfide (PPS) 26125-40-6 46.8 44.0 2.8 - - - - - 19.8 18.7 5.3 3.7 6.7
  3.29(3) 3.50(3) 0.71(3) -(1) -(1) -(1) -(1)
Ethyl cellulose 9004-57-3 - - - 28.6 27.4 1.2 0.04 8.6 20.4 19.0 5.6 4.9 7.9
  -(1) -(1) -(1) -(1) -(1) 1.56(2) 1.84(2) 1.41(2) 2.83(2)
Acrylonitrile butadiene styrene (ABS) 9003-56-9 43.6 35.8 8.0 38.6 39.4 -0.8 0.9 3.7 19.2 17.0 5.7 6.8 9.4
  4.83(5) 2.77(5) 2.55(5) 4.81(2) 0.00(2) 4.88(2) 0.14(2) 2.76(2) 0.92(2) 4.17(2) 0.49(2) 2.19(2)
Polystyrene (PS) 9003-53-6 41.7 37.0 5.0 36.9 37.9 -0.9 0.1 2.2 23.9 22.8 5.8 4.3 12.7
  1.24(8) 3.47(9) 2.84(8) 5.80(3) 4.32(3) 1.68(3) 0.20(3) 2.72(3) -(1) -(1) -(1) -(1)
Polyetherimide (PEI) 61128-46-9 - - - - - - - - 19.8 17.7 6.0 6.4 4.8
  1.07(5) 1.14(5) 2.43(5) 1.70(5)
Poly n-butyl methacrylate (PnBMA) 95608-33-7 32.3 27.3 5.0 - - - - - 18.4 16.0 6.2 6.6 9.5
  1.56(5) 2.59(5) 1.78(5) -(1) -(1) -(1) -(1)
Polyethylene terephthalate (PET) 25038-59-9 43.7 36.6 7.2 45.3 42.6 1.8 0.3 3.7 20.8 18.7 6.3 6.7 6.5
  3.42(16) 4.64(16) 3.42(16) 0.78(2) 2.83(2) 0.71(2) 0.21(2) 1.06(2) 1.25(8) 2.03(8) 2.80(8) 3.36(8)
Nylon 12 24937-16-4 38.2 33.1 5.2 41.3 37.0 4.3 0.6 7.6 22.2 18.5 8.1 9.1 6.3
  3.46(2) 3.96(2) 0.42(2) -(1) -(1) -(1) -(1) -(1) -(1) -(1) -(1) -(1)
Polyethersulfone (PES) 25154-01-2 47.0 40.0 7.0 - - - - - 21.0 18.3 8.2 6.4 6.3
  -(1) -(1) -(1) 0.91(6) 3.10(6) 2.33(6) 2.61(6)
Polyethyl methacrylate (PEMA) 9003-42-3 35.9 26.9 9.0 - - - - - 20.0 17.5 8.5 4.7 9.6
  -(1) -(1) -(1) 1.34(3) 0.62(3) 3.82(3) 1.99(3)
Polysulfone (PSU) 25135-51-7 46.6 30.4 16.2 - - - - - 21.5 18.5 8.5 7.0 9.4
  -(1) -(1) -(1) 2.17(3) 2.61(3) 1.12(3) 1.69(3)
Polycarbonate (PC) 24936-68-3 43.4 38.2 5.2 - - - - - 22.2 19.6 8.8 5.7 10.2
  8.21(3) 9.24(3) 3.69(3) 1.75(3) 2.58(3) 1.04(3) 4.06(3)
Polyvinyl chloride (PVC) 9002-86-2 40.1 37.4 2.8 39.8 38.7 1.0 0.1 3.1 20.0 16.8 8.9 6.1 8.5
  3.80(9) 3.93(10) 2.36(9) 4.76(6) 4.33(6) 0.96(6) 0.15(6) 2.31(6) 1.65(5) 1.95(5) 1.78(5) 3.94(5)
Polyvinyl butyral 63148-65-2 - - - - - - - - 24.6 19.1 9.5 12.2 10.0
  0.92(3) 4.50(3) 1.65(3) 1.53(3)
Polyvinylidene chloride (PVDC, Saran) 9002-85-1 45.3 40.4 4.9 40.3 40.4 -0.1 0.0 2.6 23.1 19.0 9.6 9.0 5.8
  0.38(4) 2.93(4) 2.91(4) -(1) -(1) -(1) -(1) -(1) 1.98(2) 0.64(2) 1.70(2) 2.62(2)
Nylon 6,6 32131-17-2 44.8 36.3 9.8 40.2 36.9 3.3 1.5 12.1 25.8 17.2 9.9 16.5 4.4
  3.07(8) 5.63(9) 4.03(8) 3.61(2) 0.71(2) 2.90(2) 2.11(2) 13.5(2) 1.11 1.10 6.80 1.24
Polyurethanes - 39.3 30.8 8.6 30.0 30.9 -0.9 0.02 10.0 22.8 18.8 10.0 8.2 9.8
  2.60(8) 3.63(8) 3.95(8) -(1) -(1) -(1) -(1) -(1) 1.53(11) 2.54(11) 3.09(11) 3.48(11)
Polymethyl methacrylate (PMMA, acrylic, plexiglas) 9011-14-7 43.5 35.9 7.8 42.2 41.6 0.6 0.0 11.1 21.3 17.9 10.1 5.4 11.0
  2.88(14) 4.09(13) 3.79(13) 2.97(11) 2.36(11) 0.89(11) 0.04(11) 5.84(11) 1.37(5) 4.46(5) 3.73(5) 4.63(5)
Epoxies - 45.0 37.2 7.8 - - - - - 24.1 19.2 10.9 9.6 11.1
  4.63(5) 4.68(5) 7.00(5) 2.53(13) 2.37(13) 2.66(13) 3.98(13)
Polyvinyl acetate (PVA) 9003-20-7 37.7 24.8 13.0 44.5 42.6 1.9 0.04 22.3 25.7 20.9 11.3 9.7 13.7
  2.89(5) 1.65(5) 1.53(5) -(1) -(1) -(1) -(1) -(1) -(1) -(1) -(1) -(1)
Polyvinylidene fluoride (PVDF) 24937-79-9 34.4 25.7 8.7 30.5 28.6 1.9 10.5 0.08 23.2 17.0 12.1 10.2 4.1
  4.17(4) 4.64(4) 4.81(4) -(1) -(1) -(1) -(1) -(1) -(1) -(1) -(1) -(1)
Cellulose acetate (CA) 9004-35-7 42.0 31.0 11.1 43.5 39.0 4.5 0.3 22.2 23.5 17.1 13.1 9.4 10.6
  5.44(2) 1.84(2) 3.61(2) 6.42(4) 4.20(4) 3.25(4) 0.33(4) 2.71(4) 1.58(4) 4.41(4) 3.81(4) 2.96(4)
Cellulose acetate butyrate (CAB) 9004-36-8 - - - - - - - - 22.2 17.2 13.8 2.8 12.6
  -(1) -(1) -(1) -(1)
Nitrocellulose (cellulose nitrate) 9004-70-0 - - - 45.1 44.8 0.3 0.01 13.3 23.5 16.2 14.1 9.5 10.7
  0.14(2) 0.21(2) 0.35(2) 0.01(2) 3.75(2) 1.06(2) 0.85(2) 1.06(2) 1.13(2)
Polyacrylonitrile (PAN) 25014-41-9 - - - - - - - - 27.4 21.7 14.1 9.1 10.9
  -(1) -(1) -(1) -(1)
Polyvinyl alcohol (PVOH) 25213-24-5 - - - 42.0 42.0 0.0 0.0 37.0 25.2 14.7 14.1 14.9 10.5
  -(1) -(1) -(1) -(1) -(1) 2.51(4) 2.13(4) 2.18(4) 1.38(4)
Polymethacrylonitrile (PMAN) 25067-61-2 - - - - - - - - 23.7 17.2 14.4 7.6 3.8
  -(1) -(1) -(1) -(1)
Cellophane 9005-81-6 45.4 29.8 15.6 - - - - - 28.5 16.1 18.5 14.5 7.3
  -(1) -(1) -(1) -(1) -(1) -(1) -(1)

(a) Atactic PP CAS #9003-08-0; isotactic PP CAS #25085-53-4To top of page

(b) Aluminum foil, while obviously not a polymer, is included due to its widespread use in package converting and other industries.To top of page

(1) Names which are most widely used to describe the material or family of materials (e.g., polyurethanes and epoxies) at hand are preferred here. Commonly used acronyms and synonyms are also shown.To top of page

(2) CAS (Chemical Abstract Series) numbers are shown where available. In a number of instances, more than one CAS number is assigned to a given polymer — in some cases the details and nuances of these divergences are not at all clear. We have tried to reference the CAS number which appears to have the widest use with reference to the solid state properties of the given polymer.To top of page

(3) γs: Total surface free energy in mJ/m2 (equivalent to dynes/cm), as reported in polar/dispersion analyses.To top of page

(4) γsd: Dispersion component of surface free energy in mJ/m2 (equivalent to dynes/cm), as reported in polar/dispersion analyses.To top of page

(5) γsp: Polar component of surface free energy in mJ/m2 (equivalent to dynes/cm), as reported in polar/dispersion analyses.To top of page

(6) γs: Total surface free energy in mJ/m2 (equivalent to dynes/cm), as reported in acid—base analyses.To top of page

(7) γsLW: Lipschitz—van der Waals (non-polar) component of surface free energy in mJ/m2 (equivalent to dynes/cm), as reported in acid—base analyses.To top of page

(8) γsAB: Lewis acid—base interaction component of surface free energy in mJ/m2 (equivalent to dynes/cm), as reported in acid—base analyses.To top of page

(9) γs-: Base polarity (electron-donor) component of surface free energy in mJ/m2 (equivalent to dynes/cm), as reported in acid—base analyses.To top of page

(10) γs+: Acid polarity (electron-acceptor) component of surface free energy in mJ/m2 (equivalent to dynes/cm), as reported in acid—base analyses. To top of page

(11) δ: Total Hansen solubility parameter (square root of the sum of squares of the average values for dispersion, polar, and hydrogen bonding components), in MPa1/2 (equivalent to joules/cubic centimeter; 2.0455 x (cal/cc)1/2) @ 20-25oC (293.15-298.15 K). All data from Hansen Solubility Parameters: A User's Handbook, 2nd Ed., C.M. Hansen, CRC Press, Boca Raton, FL, 2007.To top of page

(12) δD: Hansen dispersion solubility parameter, in MPa1/2 (equivalent to joules/cubic centimeter; 2.0455 x (cal/cc)1/2) @ 20-25oC (293.15-298.15 K). All data from Hansen Solubility Parameters: A User's Handbook, 2nd Ed., C.M. Hansen, CRC Press, Boca Raton, FL, 2007.To top of page

(13) δP: Hansen polar solubility parameter, in MPa1/2 (equivalent to joules/cubic centimeter; 2.0455 x (cal/cc)1/2) @ 20-25oC (293.15-298.15 K). All data from Hansen Solubility Parameters: A User's Handbook, 2nd Ed., C.M. Hansen, CRC Press, Boca Raton, FL, 2007.To top of page

(14) δH: Hansen hydrogen bonding solubility parameter, in MPa1/2 (equivalent to joules/cubic centimeter; 2.0455 x (cal/cc)1/2) @ 20-25oC (293.15-298.15 K). All data from Hansen Solubility Parameters: A User's Handbook, 2nd Ed., C.M. Hansen, CRC Press, Boca Raton, FL, 2007.To top of page

(15) Ro: Interaction radius. All data from Hansen Solubility Parameters: A User's Handbook, 2nd Ed., C.M. Hansen, CRC Press, Boca Raton, FL, 2007.To top of page

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