Document Type : Original Articles
Authors
1
Sc. Student, Department of Cellulose and Paper Technology Engineering, Faculty of Energy and New Technologies Engineering, Shahid Beheshti University, Zirab Campus
2
Assistant Professor, Department of Cellulose and Paper Technology Engineering, Faculty of Energy and New Technologies Engineering, Shahid Beheshti University, Zirab Savadkoh, Mazandaran, Iran.
3
Assistant Professor, Alborz Research Center, Forests, Range & Watershed Management Organization, Karadj, Tehran, Iran.
4
Assistant Professor, Department of Wood and Paper Science & Technology, Faculty of Natural Resources, Tarbiat Modares University, Noor, , Mazandaran, Iran.
Abstract
Recycling is a promising approach for rescuing the earth from recoverable solid waste. Among different wastes, paper plays an important role. The effects of wastepaper recycling times on the properties of recycled paper have always been considered but less attention has been paid to semi-chemical papers. In this study, the effect of the recycling times of NSSC wastepaper on their WRV (Water Retention Value), hornification of fibers, tensile strength index, burst strength index and tear strength index was investigated. Results indicated that successive recycling of NSSC wastepaper presents an identical behavior to successive recycling of chemical waste papers. The WRV, tensile strength index, burst strength index and tear strength index decreased and the hornification of fibers increased.
Keywords
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