The mechanical properties of elastomeric poly(alkyl methacrylate)s.
A range of poly(alkyl methacrylate)s in the range C5 to C13 with varying degrees of crosslinking, have been studied with respect to stress-strain behaviour. Where the extensions to break were sufficiently high, stress-strain properties conformed well to the statistical theory of rubber elasticity, the Mooney/Rivlin C2 term being sensibly zero. All materials studied were very elastic, exhibiting extremely little permanent set. The energy to break decreases very rapidly as the homologous series is ascended, and 0.5% crosslinking agent is perfectly adequate to give elastic properties. Hence either n-pentyl or hexyl methacrylates are to be preferred in soft prosthesis formulations on mechanical grounds.
Davy
K W
KW
Dental School, London Hospital Medical College, UK.
Braden
M
M
D000179:Acrylates; D003778:Dentures; D004548:Elasticity; D008433:Mathematics; D008689:Methacrylates; D011108:Polymers; D012408:Rubber; D013314:Stress, Mechanical
D000179:Acrylates; D008689:Methacrylates; D011108:Polymers; C533795:hexyl methacrylate; D012408:Rubber