摘要
以漂白阔叶木浆为原料,研究亚临界乙醇/水纯化处理对木浆纤维特性的影响。通过控制预处理温度和时间,考察纯化浆得率和纤维素相对含量的变化规律,并通过扫描电镜(SEM)、傅里叶红外光谱(FT-IR)和X射线衍射(XRD)等方法对预处理后木浆纤维的形态特征、化学结构以及结晶度进行表征分析。结果显示:当预处理温度180℃,时间180 min时,纯化浆得率为93.30%,纤维素相对含量达到87.79%,相比原料提高8.43%;SEM显示,此时纤维出现分丝帚化,纤维表面出现褶皱并暴露出大量微纤丝;XRD研究发现,此时结晶度达到76.40%,相比原料提高22.69%。
The effect of subcritical aqueous ethanol pretreatment on the properties of bleached hardwood pulp cellulose was studied. The pulp yield and the cellulose relative content varying with pretreatment temperature and time were investigated,and then the morphological characteristics,chemical structure and the crystallinity were analyzed by SEM,FT-IR and XRD. The max values of the pulp yield and the cellulose relative content were 93.30% and 87.79% respectively while it was pretreated at 180 ℃ and 180 min with aqueous ethanol. SEM showed that the surface of the pretreated cellulose was wrinkled and lots of microfibrils appeared,and XRD showed that the crystallinity value of the pretreated cellulose reached 76.40% which was about 22.69% higher than the raw material.
作者
周天文
郭大亮
华飞果
童树华
夏新兴
孙丽红
Zhou Tianwen;Guo Daliang;Hua Feiguo;Tong Shuhua;Xia Xinxing;Sun Lihong(College of Materials and Textiles,Zhejiang Sci-Tech University,Hangzhou 310018,China;Tianjin Key Laboratory of Pulp&Paper,Tianjin University of Science&Technology,Tianjin 300457,China;Zhejiang Jinchang Specialty Paper Co.,LTD.,Quzhou 324000,China;Shandong Light Industry Design Institute,Ji'nan 250000,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2020年第5期218-223,共6页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(31500492)
浙江省自然科学基金(LY16C160005)
中国博士后自然科学基金(2017M612035)
天津科技大学天津市制浆造纸重点实验室开放基金(201601)。
作者简介
通信作者:夏新兴(1967-),男,博士、教授,主要从事制浆造纸清洁生产技术及特种纸等方面的研究。xiaxx@zstu.edu.cn。
