Cellulose fibril aggregation - an inherent property of kraft pulps

被引：249

作者：

Hult, EL ^{[1
]}

Larsson, PT ^{[1
]}

Iversen, T ^{[1
]}

机构：

[1] STFI, Swedish Pulp & Paper Res Inst, SE-11486 Stockholm, Sweden

来源：

POLYMER | 2001年 / 42卷 / 08期

关键词：

cellulose; NMR; fibril aggregation;

D O I：

10.1016/S0032-3861(00)00774-6

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Changes in cellulose fibril aggregation during kraft pulping and drying of kraft pulps were studied by cross-polarization magic angle spinning carbon-13 nuclear magnetic resonance in combination with spectral fitting. An increase in lateral fibril aggregate dimensions was observed in the initial phase of delignification of the pulping. The increase in aggregate dimensions is attributed to an increased contact between cellulose fibril surfaces as a result of the removal of hemicellulose and lignin. Drying of the pulps results in even larger cellulose fibril aggregates. This process is also shown to be related to the hemicellulose content. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：3309 / 3314

页数：6

共 30 条

[1] Changes in surface ultrastructure of Norway spruce fibres during kraft pulping - visualisation by field emission-SEM [J].

Duchesne, I ;

Daniel, G .

NORDIC PULP & PAPER RESEARCH JOURNAL, 2000, 15 (01) :54-61

[2] HIGH-RESOLUTION, MAGIC ANGLE SAMPLE SPINNING C-13 NMR OF SOLID CELLULOSE-I [J].

EARL, WL ;

VANDERHART, DL .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1980, 102 (09) :3251-3252

[3] Structural aspects in ultrathin cellulose microfibrils followed by 13C CP-MAS NMR [J].

Heux, L ;

Dinand, E ;

Vignon, MR .

CARBOHYDRATE POLYMERS, 1999, 40 (02) :115-124

[4]

HIGGINS H. G., 1963, APPITA JOUR AUSTRALIAN PULP AND PAPER INDUST, V16, P145

[5] CP MAS C-13 NMR-STUDY OF SPIN RELAXATION PHENOMENA OF CELLULOSE CONTAINING CRYSTALLINE AND NONCRYSTALLINE COMPONENTS [J].

HORII, F ;

HIRAI, A ;

KITAMARU, R .

JOURNAL OF CARBOHYDRATE CHEMISTRY, 1984, 3 (04) :641-662

[6] A comparative CP/MAS 13C-NMR study of cellulose structure in spruce wood and kraft pulp [J].

Hult, EL ;

Larsson, PT ;

Iversen, T .

CELLULOSE, 2000, 7 (01) :35-55

[7]

HULT EL, 2000, IN PRESS NORDIC PULP

[8]

JANSON JOG, 1974, FASERFORSCH TEXTILTE, V25, P379

[9]

Jayme G., 1944, Papierfabrikant-Wochenblatt Fuer Papierfabrikation, V6, P187

[10]

KLEINERT TN, 1966, TAPPI, V49, P53

← 1 2 3 →