EFFECT OF CHEMICAL PRETREATMENT ON CHEMICAL CHARACTERISTICS OF STEAM EXPLOSION PULPS OF ASPEN

被引:13
作者
BEN, YX
KOKTA, BV
DOUCET, J
KALIAGUINE, S
机构
[1] UNIV QUEBEC,CTR RECH PATES & PAPIERS,TROIS RIVIERES G9A 5H7,PQ,CANADA
[2] UNIV LAVAL,FAC SCI & GENIE,DEPT GENIE CHIM,ST FOY G1K 7P4,PQ,CANADA
基金
加拿大自然科学与工程研究理事会;
关键词
D O I
10.1080/02773819308020522
中图分类号
TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];
学科分类号
0805 ; 080502 ; 0822 ;
摘要
The effect of chemical pretreatment on the chemical characteristics of steam explosion pulps was studied by ESCA, FTIR and other chemical methods. 18 different chemical solutions, which were the combination of following chemicals Na2SO3, NaOH, NaHCO3, Na2CO3, MgCO3, MgCl2, ZnCl2, Na2S or H2O2, were used as pretreatment agent. The chemical characteristics of pulps with different pretreatment including hydrophilic group content, surface composition of the fibers, bulk chemical composition as well as physical and optical properties were compared. Compared to Na2SO3 alone or to other chemical pretreatment systems, a presence of NaOH, NaHCO3 or MgCO3 led to a higher hydrophilic group content, more carbohydrates exposed on the fiber surface as well as to a higher degree of lignin sulfonation, which may explain their high physical strength. A lignin analysis showed little difference in their bulk lignin contents. The presence of NaOH in impregnation solution led to xylan partially dissolving during the steam explosion cooking process. Furthermore, controlling the impregnation solution's initial pH in the range 9-10 normally led to high pulp yield.
引用
收藏
页码:349 / 369
页数:21
相关论文
共 32 条
[1]  
AHMED A, 1987, CELL CHEM TECHNOL, V21, P483
[2]   ESCA ANALYSIS OF PARTIALLY CONVERTED LIGNOCELLULOSIC MATERIALS [J].
AHMED, A ;
ADNOT, A ;
KALIAGUINE, S .
JOURNAL OF APPLIED POLYMER SCIENCE, 1988, 35 (07) :1909-1919
[3]   ESCA STUDY OF THE SOLID RESIDUES OF SUPERCRITICAL EXTRACTION OF POPULUS TREMULOIDES IN METHANOL [J].
AHMED, A ;
ADNOT, A ;
KALIAGUINE, S .
JOURNAL OF APPLIED POLYMER SCIENCE, 1987, 34 (01) :359-375
[4]   CHARACTERIZATION OF THE SOLID RESIDUES OF VACUUM PYROLYSIS OF POPULUS-TREMULOIDES [J].
AHMED, A ;
PAKDEL, H ;
ROY, C ;
KALIAGUINE, S .
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, 1989, 14 (04) :281-294
[5]   SURFACE-ANALYSIS BY ESCA OF SULFITE POST-TREATED CTMP [J].
BARRY, AO ;
KORAN, Z ;
KALIAGUINE, S .
JOURNAL OF APPLIED POLYMER SCIENCE, 1990, 39 (01) :31-42
[6]  
BEN Y, 1991, DEC CELL 91 NEW ORL, P408
[7]  
BEN Y, IN PRESS CHINA PULP
[8]  
BIKALES NM, 1971, CELLULOSE CELLULOS 4, pCH8
[9]  
Dorris G.M., 1978, CELLUL CHEM TECHNOL, V12, P9
[10]  
Dorris G.M., 1978, CELLUL CHEM TECHNOL, V12, P721, DOI DOI 10.1007/BF00819664