Inhibition of the Dissolution of Calcium Carbonate Filler

CONCLUSIONS

Phosphate was shown to inhibit the dissolution of GCC filler. An optimal phosphate dosage on the degree of inhibition was found. Surface analsysis indicated the precipitation of calcium phosphate type solid phase on the surface of treated GCC particles. These thin fragments may act as barrier and block the dissolution sites.

ACKNOWLEDGEMENTS

• Network Centres of Excellence for Mechanical Wood-Pulps
• Columbia River Carbonates
• Gerald Pleizer (NRC) for conducting the surface analysis

REFERENCES

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