Chemistry and Industry of Forest Products ›› 2014, Vol. 34 ›› Issue (2): 61-66.doi: 10.3969/j.issn.0253-2417.2014.02.011
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LIU Wen-jing, WU Shu-bin, TAO Zheng-yi
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Abstract: The carboxymethylation pretreated cassava dregs grafted acrylamide and [2-methacryloyloxy] trimethylammonium chloride(CMPCD-g-AD)was used in deinked pulp. The effects of the factors, including CMPCD-g-AD dosage, pH value, conductivity, and shearing force, on the retention, pulp drainage and handsheet physical properties were studied in this study. The results showed that the optimal retention and drainage could be obtained as the dosage of CMPCD-g-AD is 1.2%, and the maximum value of drainage and first pass the retention (FPR) of recycled pulp is 244.6 g in 60 s and 90.46%, respectively. The best pulp retention was acquired at pH 8.5, and it decreased as the pH value was over 8.5. Hence, the CMPCD-g-AD was suitable for applying in a nearly pH-neutral solution. The increasing of salt content had a adverse effect on drainage and the fines retention decreased slightly by 3.8%. Shear force was negative for FPR, therefore, outlet of screen was proposed to be the point for adding CMPCD-g-AD. CMPCD-g-AD showed a significant positive impact on paper strength. The tensile index, burst index, tear index and breaking length were increased by 104.38%,12.77%,12.95% and 88.58%, respectively.
Key words: amphoteric cassava dregs, retention and drainage, ONP
CLC Number:
TQ35
LIU Wen-jing, WU Shu-bin, TAO Zheng-yi. Application of Amphoteric Cassava Dregs in ONP and Its Impacts on Retention, Drainage and Paper Physical Strength[J]. Chemistry and Industry of Forest Products, 2014, 34(2): 61-66.
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URL: http://www.cifp.ac.cn/EN/10.3969/j.issn.0253-2417.2014.02.011
http://www.cifp.ac.cn/EN/Y2014/V34/I2/61