REINFORCEMENT OF CALCIUM PHOSPHATE CEMENTS WITH PHOSPHORYLATED CHITIN*

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REINFORCEMENT OF CALCIUM PHOSPHATE CEMENTS WITH PHOSPHORYLATED CHITIN*

Papers | Updated：2021-06-21

- REINFORCEMENT OF CALCIUM PHOSPHATE CEMENTS WITH PHOSPHORYLATED CHITIN*
- Vol. 20, Issue 4, Pages: 325-332(2002)
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- Published：20 August 2002
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REINFORCEMENT OF CALCIUM PHOSPHATE CEMENTS WITH PHOSPHORYLATED CHITIN*[J]. 2002, 20(4): 325-332.
DOI：

REINFORCEMENT OF CALCIUM PHOSPHATE CEMENTS WITH PHOSPHORYLATED CHITIN*[J]. 2002, 20(4): 325-332. DOI：

摘要

Phosphorylated chitins (P-chitins) as the additives of calcium phosphate cements (CPCs) were prepared by thephosphorylation of chitin with phosphorus pentoxide in methanesulfonic acid. Their physical properties and effects on CPCsfrom monocalcium phosphate monohydrate (MCPM) and calcium oxide (CaO) or dicalcium phosphate dihydrate (DCPD)and calcium hydroxide [Ca(OH)2] were investigated. Addition of P-chitin (Mw = 2.60×104; degree of substitution

DS =0.68) to the liquid phase in amounts up to 3 wt% for MCPM and CaO cements or 1.5 wt% for DCPD and Ca(OH)2 cements could enhance the mechanical strength considerably

while little influence on the setting time was observed.However

further addition of P-chitin will cause no setting.

Abstract

DS =0.68) to the liquid phase in amounts up to 3 wt% for MCPM and CaO cements or 1.5 wt% for DCPD and Ca(OH)2 cements could enhance the mechanical strength considerably

while little influence on the setting time was observed.However

further addition of P-chitin will cause no setting.

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