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
VL - 16
SP - 451
EP - 457
JO - Journal of Polymer Science
JF - Journal of Polymer Science
SN - 0022-3832
IS - 82
ER -