TY - JOUR
T1 - Uptake of tridodecylmethylammonium chloride by PVC
AU - Froehling, P.E.
AU - Koenhen, D.M.
AU - Smolders, C.A.
AU - Bantjes, A.
PY - 1977
Y1 - 1977
N2 - The uptake of tridodecylmethylammonium chloride (TDMAC) by poly(vinyl chloride) has been investigated to provide a more quantitative basis for the preparation of blood-compatible surfaces based on TDMAC-heparin coatings. Sorption isotherms of TDMAC from toluene-cyclohexane and toluene-methanol mixtures have been measured. In toluene-cyclohexane mixtures, the TDMAC uptake is proportional to the degree of swelling of the polymer. From ion-exchange experiments with 36Cl-, it appears that only a small fraction of the TDMAC remains near the PVC surface to provide the heparin binding capacity. Methanol forms a strong H-bonded complex with TDMAC in toluence and prevents its sorption by PVC.
AB - The uptake of tridodecylmethylammonium chloride (TDMAC) by poly(vinyl chloride) has been investigated to provide a more quantitative basis for the preparation of blood-compatible surfaces based on TDMAC-heparin coatings. Sorption isotherms of TDMAC from toluene-cyclohexane and toluene-methanol mixtures have been measured. In toluene-cyclohexane mixtures, the TDMAC uptake is proportional to the degree of swelling of the polymer. From ion-exchange experiments with 36Cl-, it appears that only a small fraction of the TDMAC remains near the PVC surface to provide the heparin binding capacity. Methanol forms a strong H-bonded complex with TDMAC in toluence and prevents its sorption by PVC.
KW - IR-70800
U2 - 10.1002/app.1977.070211021
DO - 10.1002/app.1977.070211021
M3 - Article
SN - 0021-8995
VL - 21
SP - 2855
EP - 2859
JO - Journal of applied polymer science
JF - Journal of applied polymer science
IS - 10
ER -