A direct analytical test of the Flory-Schulz distribution in nylon-6-type equilibrium polymers

P.H. Hermans; D. Heikens; P.F. Velden, van

doi:10.1002/pol.1955.120168230

A direct analytical test of the Flory-Schulz distribution in nylon-6-type equilibrium polymers

P.H. Hermans, D. Heikens, P.F. Velden, van

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

The validity of the Flory-Schulz distribution of chain length in equilibrium polymers produced from ¿-caprolactam and water (Nylon 6) over a DP range from ~14 to ~90 is tested by determination of the content of monomer (¿-aminocaproic acid, ACA) by means of a chromatographic technique. Experiments show general agreement with a simple theoretical relationship (P¯n1 = N, where P¯ = number average DP of chains, n1 = number of ACA molecules, and N = total number of chains), required for equilibrium if equal reactivity of all functional groups independent of chain length is assumed. Moderate deveiations from this relation, which seem to occur at higher DP values (P¯ ~ 90) require further investigation.

Original language	English
Pages (from-to)	451-457
Number of pages	7
Journal	Journal of Polymer Science
Volume	16
Issue number	82
DOIs	https://doi.org/10.1002/pol.1955.120168230
Publication status	Published - 1955

Access to Document

10.1002/pol.1955.120168230

Cite this

@article{c3a6f4da7a2f4d77a0421330d20a0080,

title = "A direct analytical test of the Flory-Schulz distribution in nylon-6-type equilibrium polymers",

abstract = "The validity of the Flory-Schulz distribution of chain length in equilibrium polymers produced from ¿-caprolactam and water (Nylon 6) over a DP range from ~14 to ~90 is tested by determination of the content of monomer (¿-aminocaproic acid, ACA) by means of a chromatographic technique. Experiments show general agreement with a simple theoretical relationship (P¯n1 = N, where P¯ = number average DP of chains, n1 = number of ACA molecules, and N = total number of chains), required for equilibrium if equal reactivity of all functional groups independent of chain length is assumed. Moderate deveiations from this relation, which seem to occur at higher DP values (P¯ ~ 90) require further investigation.",

author = "P.H. Hermans and D. Heikens and {Velden, van}, P.F.",

year = "1955",

doi = "10.1002/pol.1955.120168230",

language = "English",

volume = "16",

pages = "451--457",

journal = "Journal of Polymer Science",

issn = "0022-3832",

publisher = "Wiley-Interscience",

number = "82",

}

TY - JOUR

T1 - A direct analytical test of the Flory-Schulz distribution in nylon-6-type equilibrium polymers

AU - Hermans, P.H.

AU - Heikens, D.

AU - Velden, van, P.F.

PY - 1955

Y1 - 1955

N2 - The validity of the Flory-Schulz distribution of chain length in equilibrium polymers produced from ¿-caprolactam and water (Nylon 6) over a DP range from ~14 to ~90 is tested by determination of the content of monomer (¿-aminocaproic acid, ACA) by means of a chromatographic technique. Experiments show general agreement with a simple theoretical relationship (P¯n1 = N, where P¯ = number average DP of chains, n1 = number of ACA molecules, and N = total number of chains), required for equilibrium if equal reactivity of all functional groups independent of chain length is assumed. Moderate deveiations from this relation, which seem to occur at higher DP values (P¯ ~ 90) require further investigation.

AB - The validity of the Flory-Schulz distribution of chain length in equilibrium polymers produced from ¿-caprolactam and water (Nylon 6) over a DP range from ~14 to ~90 is tested by determination of the content of monomer (¿-aminocaproic acid, ACA) by means of a chromatographic technique. Experiments show general agreement with a simple theoretical relationship (P¯n1 = N, where P¯ = number average DP of chains, n1 = number of ACA molecules, and N = total number of chains), required for equilibrium if equal reactivity of all functional groups independent of chain length is assumed. Moderate deveiations from this relation, which seem to occur at higher DP values (P¯ ~ 90) require further investigation.

U2 - 10.1002/pol.1955.120168230

DO - 10.1002/pol.1955.120168230

M3 - Article

SN - 0022-3832

VL - 16

SP - 451

EP - 457

JO - Journal of Polymer Science

JF - Journal of Polymer Science

IS - 82

ER -

A direct analytical test of the Flory-Schulz distribution in nylon-6-type equilibrium polymers

Abstract

Access to Document

Fingerprint

Cite this