PMID- 21979165
OWN - NLM
STAT- MEDLINE
DCOM- 20150223
LR  - 20211020
IS  - 1573-4838 (Electronic)
IS  - 0957-4530 (Linking)
VI  - 22
IP  - 12
DP  - 2011 Dec
TI  - The influence of Sr and H3PO4 concentration on the hydration of SrCaHA bone 
      cement.
PG  - 2631-40
LID - 10.1007/s10856-011-4448-7 [doi]
AB  - Sr-contained calcium hydroxyapatite (SrCaHA) cement is a potential biomaterial 
      for in vivo bone repair and surgery fixation due to its excellent 
      biodegradability, bioactivity, biocompatibility, easily shaping and 
      self-hardening. We had ever reported the in vitro physiochemical properties, 
      biocompatibility and in vivo degradability of the SrCaHA cement obtained by 
      mixing a cement powder of Ca(4)(PO(4))(2)O/CaHPO(4)/SrHPO(4) and a cement liquid 
      of diluted H(3)PO(4) aqueous solution. In the present study, we intensively 
      studied the influences of both Sr content and H(3)PO(4) concentration in diluted 
      phosphoric acid aqueous solution on the setting time, hydration heat-liberation 
      behaviours, and real-time microstructure and phase evolutions of the SrCaHA 
      cement. The results show that both PO(4)(3-) and H(+) ions in PA solution 
      attended the hydration reaction as reactants, and thus the increase of the PA 
      concentration not only promoted the dissolution of Ca(4)(PO(4))(2)O but also 
      pushed the hydration progress of SrCaHA bone cement. Sr content exhibits a 
      remarkable retardation role on the apatite transformation of the SrCaHA cement 
      pastes which probably attributed to its higher degree of supersaturation for 
      yielding apatite crystals and lower transformation rate when exposed to the 
      Sr(2+)-containing hydration system. This present results contribute to a better 
      understanding on the hydration mechanism of the new SrCaHA cement and help to the 
      more precisely controlling of its hydration process.
FAU - Guo, Dagang
AU  - Guo D
AD  - State Key Laboratory for Mechanical Behavior of Materials, School of Material 
      Science and Engineering, Xi'an Jiaotong University, Xi'an, China. 
      guodagang@mail.xjtu.edu.cn
FAU - Mao, Mengmeng
AU  - Mao M
FAU - Qi, Wenli
AU  - Qi W
FAU - Li, Hongyuan
AU  - Li H
FAU - Ni, Pengfei
AU  - Ni P
FAU - Gao, Guohan
AU  - Gao G
FAU - Xu, Kewei
AU  - Xu K
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20111007
PL  - United States
TA  - J Mater Sci Mater Med
JT  - Journal of materials science. Materials in medicine
JID - 9013087
RN  - 0 (Biocompatible Materials)
RN  - 0 (Bone Cements)
RN  - 0 (Ions)
RN  - 0 (Phosphoric Acids)
RN  - 0 (Powders)
RN  - 91D9GV0Z28 (Durapatite)
RN  - E4GA8884NN (phosphoric acid)
RN  - YZS2RPE8LE (Strontium)
SB  - IM
MH  - Absorbable Implants
MH  - Biocompatible Materials/*chemistry
MH  - Bone Cements/*chemistry
MH  - Crystallization
MH  - Durapatite/*chemistry
MH  - Hot Temperature
MH  - Ions
MH  - Materials Testing
MH  - Microscopy, Electron, Scanning
MH  - Particle Size
MH  - Phosphoric Acids/*chemistry
MH  - Powders
MH  - Strontium/*chemistry
MH  - Surface Properties
MH  - X-Ray Diffraction
EDAT- 2011/10/08 06:00
MHDA- 2015/02/24 06:00
CRDT- 2011/10/08 06:00
PHST- 2011/02/18 00:00 [received]
PHST- 2011/09/13 00:00 [accepted]
PHST- 2011/10/08 06:00 [entrez]
PHST- 2011/10/08 06:00 [pubmed]
PHST- 2015/02/24 06:00 [medline]
AID - 10.1007/s10856-011-4448-7 [doi]
PST - ppublish
SO  - J Mater Sci Mater Med. 2011 Dec;22(12):2631-40. doi: 10.1007/s10856-011-4448-7. 
      Epub 2011 Oct 7.