玉米茎秆纳米纤丝纤维可改善废纸浆成纸的性能指标  

Valorization of corn stalk by the production of cellulose nanofibers to improve recycled paper properties

作　　者：苗成 

出　　处：《中华纸业》2017年第4期53-60,共8页China Pulp & Paper Industry

摘　　要：玉米茎秆作为农业生产的废弃物价格稳定且可回收,用于制备纤维素纳米纤丝(C N F)的原料,研究发现CNF的添加可改善废纸浆成纸的性能。本实验以桉树纳米硫酸盐浆纤维素纳米纤丝(E-CNF)作为参照对比,研究同时发现向废纸浆中加入0.5%玉米茎秆纤维素纳米纤丝(C-CNF),会使成纸后纸张的抗张指数增加20%。当废纸浆中E-CNF的加入量为1.5%时,纸张的抗张指数增加20%;且随着E-C N F加入量的增加,纸张的抗张强度会得到进一步改善。本文主要研究C-C N F加入废纸浆后成纸,纸张的抗张强度得到改善的情况;纸张抗张强度的改善与废纸浆中各原料的配比无关。也就是说纸浆中无论废纸浆的配比怎么样都不会改善纸张的抗张强度。研究中发现C-CNF可以显著改善以旧瓦楞纸为主要原浆的抗张强度,仅轻度改善废纸的抗张强度。Corn stalk, an agricultural waste, was valorized by the production of cellulose nanofibers （CNF）, which were tested for improving recycled paper properties. CNF from eucalyptus kraft pulp （E-CNF） was used as a reference. Addition of 0.5% wt. CNF produced from corn organosolv pulp （C-CNF） to recycled paper increased the tensile index by 20%, whereas the same improvement with E-CMF was achieved at 1.5% wt. Tensile index was further enhanced by increasing the E-CNF, whereas C-CNF achieved its maximum effect at this dose. Different recycled furnish compositions were studied to evaluate C-CNF as a product additive. C-CNF improved tensile strength in all the different recycled furnishes studied. The tensile index improvement caused by C-CNF did not depend on the proportions of old newspaper and old magazine paper used. Addition of C-CNF to recycled corrugated board fluting increased the tensile strength, but to a slightly lower extent than in the case of recycled newsprint paper.

关 键 词：纳米纤丝纤维素(CNF) 玉米茎 农业废弃物 二次纤维纸 纳米纤维素 纸张性能 

分 类 号：TS749.7[轻工技术与工程—制浆造纸工程] TS721.4