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Journal of Biomaterials Applications, Vol. 15, No. 2, 86-105 (2000)
DOI: 10.1106/3CLD-LQ24-RWGA-3EE6

Studies on Polyurethane Potting Compound Based on Isocyanurate of Aliphatic Diisocyanate for Fabrication of a Haemodialyser

Vinoy Thomas

Polymer Division, BMT Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram-12, India

M. Jayabalan

Polymer Division, BMT Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram-12, India, bmtwing{at}md2.vsnl.net.in

S. Sandhya

School of Chemical Sciences, Mahatma Gandhi University, Kottayam, Kerala, India

Polyurethane potting compounds based on multifunctional isocyanurate of aliphatic diisocyanate, hexamethylene diisocyanate (HDI-IC) as Component A and polypropylene glycol, polyethylene glycol and castor oil (Component B) were prepared as potential potting compounds for the fabrication of a haemodialyser. The setting characteristics of the potting compounds having isocyanate index 2.54 are better than those of the compounds having 1.77. The ageing stability of castor oil and PPG-based potting compounds having isocyanate index 2.54 is better than that of PEG oil-based potting compounds. Appreciable hydrolytic, oxidative and chemical stability could be observed with HDI-IC/PPG/2.54 potting compounds for development of haemodialyser, oxygenator, etc.

Key Words: potting compound-isocyanurate • setting characteristics • ageing stability • polyurethane-based potting compounds


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