EVALUATING LIGHT AGING OF SOME METAL IONS OF MEDIUM ELEMENTS ON CHARACTERISTICS OF CHEMICAL MECHANICAL PAPERS 1- EFFECT ON BRIGHTNESS

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NEMATI MOHAMMAD; MIRSHOKRAEI SEYED AHMAD; HEMASI A.H.; TALAEIPOUR M.

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Journal: Year:2007 | Volume:13 | Issue:2 Page(s): 493-509

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Information Journal Paper

Title

EVALUATING LIGHT AGING OF SOME METAL IONS OF MEDIUM ELEMENTS ON CHARACTERISTICS OF CHEMICAL MECHANICAL PAPERS 1- EFFECT ON BRIGHTNESS

Author(s)

NEMATI MOHAMMAD | MIRSHOKRAEI SEYED AHMAD | HEMASI A.H. | TALAEIPOUR M. | Issue Writer Certificate

Keywords

HARDWOOD CMP PAPERQ3

METAL IONSQ3

ACCELERATED AGINGQ3

BRIGHTNESSQ3

Abstract

Presence of METAL IONS in the texture of chemimechnical papers leads to abortion of light due to reaction with lignin and thus yellowing and aging the paper would accelerate. This research is commissioned in order to determine the BRIGHTNESS variation of chemimechanical papers produced in the wood and paper factories of Mazandaran when treating them with METAL IONS of medium elements and methods of declining it. Two types of chemimechanical sample papers from the factory Were obtained, bleached and unbleached papers. Samples included of two types. First, the samples were smeared with EDTA in different densities. This process ended in neutralization of existent ions in CMP paper samples. In the second stage treatment, after dehydrating each of the above- mentioned samples that were combined with EDTA we smeared them with solvents including METAL IONS of medium elements and then put them under the radiance of UV Black Light lamps. One of the objectives of this research was to determine what kind of effect could have different metals on the Aging and Yellowing process. In the final stage, we measured the light specification of samples such as BRIGHTNESS. The highest spoiling effect on the yellowing process was determined to be Fe2+ ion and the lowest effect was issued by Al3+ ion. For decreasing the effect of each metal ion, increasing the density of EDTA, decreasing the PH of pulps and methods such as methylation methods were suggested.

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References

EFFECT OF METAL IONS ON THE OPTICAL PROPERTIES OF CHEMOMECHANICAL PULP OF HARDWOODS SPECIES

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APA: Copy

NEMATI, MOHAMMAD, MIRSHOKRAEI, SEYED AHMAD, HEMASI, A.H., & TALAEIPOUR, M.. (2007). EVALUATING LIGHT AGING OF SOME METAL IONS OF MEDIUM ELEMENTS ON CHARACTERISTICS OF CHEMICAL MECHANICAL PAPERS 1- EFFECT ON BRIGHTNESS. JOURNAL OF AGRICULTURAL SCIENCES, 13(2), 493-509. SID. https://sid.ir/paper/7938/en

Vancouver: Copy

NEMATI MOHAMMAD, MIRSHOKRAEI SEYED AHMAD, HEMASI A.H., TALAEIPOUR M.. EVALUATING LIGHT AGING OF SOME METAL IONS OF MEDIUM ELEMENTS ON CHARACTERISTICS OF CHEMICAL MECHANICAL PAPERS 1- EFFECT ON BRIGHTNESS. JOURNAL OF AGRICULTURAL SCIENCES[Internet]. 2007;13(2):493-509. Available from: https://sid.ir/paper/7938/en

IEEE: Copy

MOHAMMAD NEMATI, SEYED AHMAD MIRSHOKRAEI, A.H. HEMASI, and M. TALAEIPOUR, “EVALUATING LIGHT AGING OF SOME METAL IONS OF MEDIUM ELEMENTS ON CHARACTERISTICS OF CHEMICAL MECHANICAL PAPERS 1- EFFECT ON BRIGHTNESS,” JOURNAL OF AGRICULTURAL SCIENCES, vol. 13, no. 2, pp. 493–509, 2007, [Online]. Available: https://sid.ir/paper/7938/en

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