Micro-nanofibrillated cellulose was prepared using bleached mixed hardwood pulp by a low energy consuming chemo-refining approach having potential to be implemented easily in paper industry. Bleached mixed hardwood pulp was pretreated with sodium meta-periodate and sodium chlorite and micro-nanofibrillated by using refining in Valley beater. Scanning electron microscopy images of prepared micro-nanofibrillated cellulose showed 87 % fibre distribution in nano range, 4.47 ± 0.5 g/g water retention value and 2.13 ± 0.1 meq/100 g carboxyl content. Carboxylation effect of given chemical pretreatment was further confirmed by FTIR analysis. Paper handsheets, having bleached mixed hardwood pulp and prepared micro-nano-fibrillated cellulose, resulted in about 5% lower bulk with 27 %, 32 % and 87 % higher breaking length, burst factor and double fold, respectively than control (without nano-fibrillated cellulose). Prepared micro-nanofibrillated cellulose addition didn't show negative effect on pulp drainability (33 °SR). This work showed that micro-nanofibrillated cellulose might also be prepared using conventional routes of paper industry to improve paper properties.

中文翻译：

---

简便的化学精制方法，用于从漂白的混合硬木纸浆生产微纳纤纤化纤维素，以改善纸张质量。

使用漂白的混合硬木浆通过低能耗的化学精制方法制备了微纳米纤维化纤维素，该方法具有在造纸工业中易于实施的潜力。将漂白的混合硬木浆用偏高碘酸钠和亚氯酸钠预处理，并通过在Valley打浆机中进行精制将其微纳米纤维化。制备的微纳米纤维化纤维素的扫描电子显微镜图像显示，纳米级纤维分布为87％，保水值为4.47±0.5 g / g，羧基含量为2.13±0.1 meq / 100 g。FTIR分析进一步证实了给定化学预处理的羧化作用。纸质手抄纸经漂白处理后混合了硬木浆并制备了微纳纤化纤维素，其松厚度降低了约5％，断裂长度，破裂系数和双倍性提高了27％，32％和87％，分别比对照（无纳米原纤化纤维素）。制备的微纳米纤维化纤维素的添加对纸浆的排水性（33°SR）没有显示负面影响。这项工作表明，微纳米纤维化纤维素也可以使用造纸工业的常规路线来制备，以改善纸张性能。