Influence of talc on the properties of polycarboxylate cement.
Zinc oxide, the inorganic component of polycarboxylate cement, was mixed with talc in various proportions from 10% to 50%. These powder mixtures were spatulated with poly(acrylic acid) in three powder to liquid (P/L) ratios of 1:1, 1.5:1 and 2:1 (w/w). Properties such as setting time and compressive and diametral tensile strengths of the resultant cements were determined. It was observed that the setting time of the resultant cements increased with increasing talc content. The compressive and diametral tensile strengths also increased by approximately 54% with a 10% concentration of talc.
Bansal
R K
RK
Department of Chemistry, Indian Institute of Technology, ITMMEC, Indian Institute of Technology, New Delhi, India.
Tewari
U S
US
Singh
P
P
Murthy
D V
DV
D000180:Acrylic Resins / Q000008:administration & dosage / Q000737:chemistry; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D019245:Compressive Strength; D003799:Dental Stress Analysis / Q000295:instrumentation; D006244:Hardness; D008422:Materials Testing; D011076:Polycarboxylate Cement / Q000737:chemistry*; D011208:Powders; D013627:Talc / Q000008:administration & dosage / Q000737:chemistry*; D013718:Tensile Strength; D013997:Time Factors; D015034:Zinc Oxide / Q000008:administration & dosage / Q000737:chemistry
D000180:Acrylic Resins; D011076:Polycarboxylate Cement; D011208:Powders; D013627:Talc; C006903:carbopol 940; D015034:Zinc Oxide