Effect of composition on the mechanical properties and water sorption of a butadiene/styrene copolymer-methacrylate monomer soft lining material |
| |
| Authors: | S. Parker P. Riggs S. Kalachandra D. Taylor M. Braden |
| |
| Affiliation: | (1) Dept. of Biomaterials in Relation to Dentistry, London Hospital Medical College, Turner Street, E1 2AD London, UK;(2) Chemistry Dept., Virginia Polytechnic and State University, 24061-0212 Blacksburg, VA, USA;(3) Dept. of Operative Dentistry, Dental Research Center, The University of North Carolina, 27599-7455 Chapel Hill, NC, USA;(4) IRC in Biomedical Materials, The Institute of Orthopaedics, Royal National Orthopaedic Hospital, HA7 4LP Stanmore, Middx., UK |
| |
| Abstract: | A series of experimental soft lining materials has been produced using a butadiene/styrene copolymer with methacrylate monomers, and assessed in terms of their tensile properties. Three different methacrylate monomers, n-hexyl (HMA), ethyl hexyl (EHMA) and 1-tridecyl (TDMA), and two different initiators, benzoyl peroxide (BP) and lauryl peroxide (LP), were used. Other variables were copolymer/monomer ratio and level of cross-linking. Water sorption studies were also carried out on some of the materials, selected in terms of strength, on the pure copolymer (with and without partitioning agent) and on homopolymers of HMA and EHMA. Generally, the EHMA-based materials had the highest strengths and the TDMA the lowest. The highest tensile strength at 11.36±1.80 MPa was produced by the 50/50, LP initiated EHMA material with 1% cross-linking agent, which also had the lowest water uptake. There appeared to be a relationship between tensile strength and water uptake. Water uptake was found to be governed by the partitioning agent in the copolymer powder. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
