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The effect of bamboo virgin pulp addition to the recycled pulp in enhancing the recycled paper’s mechanical properties was evaluated. Malaysian bamboo virgin pulp used in this research were  Bambusa vulgaris  (Aur bamboo),  Gigantochloa levis  (Beting bamboo), and  Gigantochloa scortechinii  (Semantan bamboo). The addition of 2.5, 5, 7.5, and 10 wt% of bamboo virgin pulp improved the burst index, folding endurance, tearing index, and tensile index of the recycled paper from 2.27 to 3.17 kPa.m 2 /g, 7 to 15 double folds, 5.98 to 8.27 mN.m 2 /g, and 24.86 to 32.40 Nm/g, respectively. These were equivalent to the increment percentage for burst index, folding endurance, tearing index, and tensile index at the range of 6.61 to 39.65%, 28.57 to 114.29%, 15.72 to 38.59%, and 10.50 to 33.87%, respectively. The application of bamboo virgin pulp is very promising in improving the recycled paper’s mechanical properties and this could be further extended in enhancing the other properties such as physical and optical paper properties.

Effect of the Bambusa vulgaris , Gigantochloa levis , and Gigantochloa scortechinii Pulp Loading on Mechanical Properties of Recycled Paper