caa a22 4500 47578264X CHVBK 20180406123649.0 cr unu---uuuuu 170329e20001201xx s 000 0 eng 10.1023/A:1008969932746 doi (NATIONALLICENCE)springer-10.1023/A:1008969932746 The influence of poly(acrylic acid) molar mass on the properties of polyalkenoate cements formed from zinc oxide/apatite mixtures [Elektronische Daten] [Sinead Kenny, Robert Hill, Mark Towler] The influence of poly(acrylic acid) molar mass was investigated on cements formed from zinc oxide-apatite mixtures at three aging times; one, seven and 28 days. Cements based on both hydroxyapatite and fluorapatite were investigated. The compressive strength, un-notched fracture strength and fracture toughness increased markedly with poly(acrylic acid) molar mass. The fracture toughness and un-notched fracture strength increased with aging time for the two highest molar mass cements, but decreased with time for the two lowest molar mass cements. The greater chain entanglement density present in the higher molar mass cements is thought to contribute significantly to the cement stability in addition to the crosslinking of the polyacrylate chains by calcium and zinc ions. Substitution of hydroxyapatite by fluorapatite had no significant influence on the mechanical properties of the cements at aging times longer than one day. Kluwer Academic Publishers, 2000 Kenny Sinead Department of Material Science and Technology, University of Limerick, Limerick, Ireland aut Hill Robert Department of Material Science and Technology, University of Limerick, Limerick, Ireland aut Towler Mark Department of Material Science and Technology, University of Limerick, Limerick, Ireland aut Journal of Materials Science: Materials in Medicine Kluwer Academic Publishers 11/12(2000-12-01), 847-853 0957-4530 11:12<847 2000 11 10856 https://doi.org/10.1023/A:1008969932746 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1008969932746 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kenny Sinead Department of Material Science and Technology, University of Limerick, Limerick, Ireland aut NATIONALLICENCE 700 1- Hill Robert Department of Material Science and Technology, University of Limerick, Limerick, Ireland aut NATIONALLICENCE 700 1- Towler Mark Department of Material Science and Technology, University of Limerick, Limerick, Ireland aut NATIONALLICENCE 773 0- Journal of Materials Science: Materials in Medicine Kluwer Academic Publishers 11/12(2000-12-01), 847-853 0957-4530 11:12<847 2000 11 10856 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer