Health & Environmental Research Online (HERO)


Print Feedback Export to File
9423569 
Meetings & Symposia 
A hansen compatibility approach in understanding solvent bonding between acrylic copolymers, and tubing materials for fabricating medical assemblies 
Bajaj, P; Bernhard, K; Heyl, D; Biagini, M 
2021 
Society of Plastics Engineers 
Annual Technical Conference - ANTEC, Conference Proceedings 
2021-May 
English 
Flexible PVC is the tubing of choice used in infusion therapy applications as well as other medical devices applications. But the health risk awareness for the plasticizer (Diethylhexylphthalate) DEHP in flexible PVC is gearing the industry to seek alternative tubing materials. Solvent bonding between two materials is a common joining technique that relies on compatibility between the substrate polymers to the tubing material for fabricating medical assemblies. Solvent is the integral component to swell the joining components and allow intermingling, diffusing and sealing the joint. In this study, we present solvent bonding as a versatile fabrication technique for joining various plastic materials to medical tubing. Acrylic copolymers, (specifically CYROLITE® GS-90 manufactured by Roehm America LLC) are tested for bond strength against four different tubing materials, namely non-DEHP-PVC, TPU, Polybutene, and Silicone, using solvent bonding. A variety of industrially accepted solvents such as Acetone, Methylethylketone (MEK) and Cyclohexanone/MEK were tested. These solvents demonstrated strong lap shear pull force strength, replacing the carcinogenic Dichloromethane (DCM), DCM/Glacial acetic acid 90/10 or the more aggressive stress-crack inducing 100% Cyclohexanone solvents. The article also describes Hansen solubility parameter as an engineering mechanism in determining miscibility and understanding the bonding performance of acrylic copolymers, and other medical plastics such as medical grade polycarbonate (PC), and Methyl methacrylate Acrylonitrile Butadiene Styrene (MABS) to various tubing materials. © 2021 Society of Plastics Engineers. All rights reserved. 
ABS resins; Acetone; Bond strength (materials); Dichloromethane; Esters; Fabrication; Functional polymers; Health risks; Joining; Plastics industry; Polyvinyl chlorides; Risk perception; Silicones; Solubility; Solvents; Styrene; Acrylic co-polymers; Acrylonitrile butadiene styrene; Bonding performance; Di-ethyl-hexyl phthalate; Fabrication technique; Hansen solubility parameters; Integral components; Methyl methacrylates; Tubing