Preparation and some properties of nylon 46

R.J. Gaymans, T.E.C. Utteren, J.W.A. van den Berg, J. Schuyer

Research output: Contribution to journalArticle

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Abstract

Nylon 46 was synthesized from the salt of 1,4-diaminobutane and adipic acid. High molecular weight polymers could be obtained by reaction for 1 hr at 215°C in a closed system and at least for 1 hr in vacuo at a temperature in the range 290-305°C. The reactions at 290°C were found to have taken place in the solid state and those at 305°C in the melt. The highest molecular weights (Mw ca. 45,000) were obtained by reaction at 290°C with a nylon salt with a pH of 7.8-8.0. The molecular weight characteristics were studied with end-group analysis, viscometry, light scattering, and ultracentrifugation. The polymers were found to be gel-free and monodisperse (Mw/Mn ~ 1.15). Films could be cast from formic acid. From x-ray diffraction patterns, measured on such films, spacings of 3.74 and 4.30 Å were calculated, whereas a long period of 66 Å was also found. The infrared spectra showed all the usual amide bands of even-even polyamides. The melting temperature was found to vary between 283 and 319°C, depending on the thermal history of the sample. Water absorption measured on a cast film showed this to be very hygroscopic (7.5% at 65% RH), while a highly crystalline sample absorbed only little water (1.6% at 65% RH).
LanguageUndefined
Pages537-545
JournalJournal of Polymer Science: Polymer Chemistry Edition
Volume15
Issue number3
DOIs
StatePublished - 1977

Keywords

  • IR-70766

Cite this

Gaymans, R. J., Utteren, T. E. C., van den Berg, J. W. A., & Schuyer, J. (1977). Preparation and some properties of nylon 46. Journal of Polymer Science: Polymer Chemistry Edition, 15(3), 537-545. DOI: 10.1002/pol.1977.170150303
Gaymans, R.J. ; Utteren, T.E.C. ; van den Berg, J.W.A. ; Schuyer, J./ Preparation and some properties of nylon 46. In: Journal of Polymer Science: Polymer Chemistry Edition. 1977 ; Vol. 15, No. 3. pp. 537-545
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title = "Preparation and some properties of nylon 46",
abstract = "Nylon 46 was synthesized from the salt of 1,4-diaminobutane and adipic acid. High molecular weight polymers could be obtained by reaction for 1 hr at 215°C in a closed system and at least for 1 hr in vacuo at a temperature in the range 290-305°C. The reactions at 290°C were found to have taken place in the solid state and those at 305°C in the melt. The highest molecular weights (Mw ca. 45,000) were obtained by reaction at 290°C with a nylon salt with a pH of 7.8-8.0. The molecular weight characteristics were studied with end-group analysis, viscometry, light scattering, and ultracentrifugation. The polymers were found to be gel-free and monodisperse (Mw/Mn ~ 1.15). Films could be cast from formic acid. From x-ray diffraction patterns, measured on such films, spacings of 3.74 and 4.30 {\AA} were calculated, whereas a long period of 66 {\AA} was also found. The infrared spectra showed all the usual amide bands of even-even polyamides. The melting temperature was found to vary between 283 and 319°C, depending on the thermal history of the sample. Water absorption measured on a cast film showed this to be very hygroscopic (7.5{\%} at 65{\%} RH), while a highly crystalline sample absorbed only little water (1.6{\%} at 65{\%} RH).",
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Gaymans, RJ, Utteren, TEC, van den Berg, JWA & Schuyer, J 1977, 'Preparation and some properties of nylon 46' Journal of Polymer Science: Polymer Chemistry Edition, vol 15, no. 3, pp. 537-545. DOI: 10.1002/pol.1977.170150303

Preparation and some properties of nylon 46. / Gaymans, R.J.; Utteren, T.E.C.; van den Berg, J.W.A.; Schuyer, J.

In: Journal of Polymer Science: Polymer Chemistry Edition, Vol. 15, No. 3, 1977, p. 537-545.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Preparation and some properties of nylon 46

AU - Gaymans,R.J.

AU - Utteren,T.E.C.

AU - van den Berg,J.W.A.

AU - Schuyer,J.

PY - 1977

Y1 - 1977

N2 - Nylon 46 was synthesized from the salt of 1,4-diaminobutane and adipic acid. High molecular weight polymers could be obtained by reaction for 1 hr at 215°C in a closed system and at least for 1 hr in vacuo at a temperature in the range 290-305°C. The reactions at 290°C were found to have taken place in the solid state and those at 305°C in the melt. The highest molecular weights (Mw ca. 45,000) were obtained by reaction at 290°C with a nylon salt with a pH of 7.8-8.0. The molecular weight characteristics were studied with end-group analysis, viscometry, light scattering, and ultracentrifugation. The polymers were found to be gel-free and monodisperse (Mw/Mn ~ 1.15). Films could be cast from formic acid. From x-ray diffraction patterns, measured on such films, spacings of 3.74 and 4.30 Å were calculated, whereas a long period of 66 Å was also found. The infrared spectra showed all the usual amide bands of even-even polyamides. The melting temperature was found to vary between 283 and 319°C, depending on the thermal history of the sample. Water absorption measured on a cast film showed this to be very hygroscopic (7.5% at 65% RH), while a highly crystalline sample absorbed only little water (1.6% at 65% RH).

AB - Nylon 46 was synthesized from the salt of 1,4-diaminobutane and adipic acid. High molecular weight polymers could be obtained by reaction for 1 hr at 215°C in a closed system and at least for 1 hr in vacuo at a temperature in the range 290-305°C. The reactions at 290°C were found to have taken place in the solid state and those at 305°C in the melt. The highest molecular weights (Mw ca. 45,000) were obtained by reaction at 290°C with a nylon salt with a pH of 7.8-8.0. The molecular weight characteristics were studied with end-group analysis, viscometry, light scattering, and ultracentrifugation. The polymers were found to be gel-free and monodisperse (Mw/Mn ~ 1.15). Films could be cast from formic acid. From x-ray diffraction patterns, measured on such films, spacings of 3.74 and 4.30 Å were calculated, whereas a long period of 66 Å was also found. The infrared spectra showed all the usual amide bands of even-even polyamides. The melting temperature was found to vary between 283 and 319°C, depending on the thermal history of the sample. Water absorption measured on a cast film showed this to be very hygroscopic (7.5% at 65% RH), while a highly crystalline sample absorbed only little water (1.6% at 65% RH).

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JO - Journal of Polymer Science: Polymer Chemistry Edition

T2 - Journal of Polymer Science: Polymer Chemistry Edition

JF - Journal of Polymer Science: Polymer Chemistry Edition

SN - 0360-6376

IS - 3

ER -

Gaymans RJ, Utteren TEC, van den Berg JWA, Schuyer J. Preparation and some properties of nylon 46. Journal of Polymer Science: Polymer Chemistry Edition. 1977;15(3):537-545. Available from, DOI: 10.1002/pol.1977.170150303